got old stuff working in new repo

.gitignore

@@ -0,0 +1,45 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.build/
+.buildlog/
+.history
+.svn/
+.swiftpm/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

.metadata

@@ -0,0 +1,45 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "6fba2447e95c451518584c35e25f5433f14d888c"
+  channel: "stable"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+      base_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+    - platform: android
+      create_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+      base_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+    - platform: ios
+      create_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+      base_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+    - platform: linux
+      create_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+      base_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+    - platform: macos
+      create_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+      base_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+    - platform: web
+      create_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+      base_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+    - platform: windows
+      create_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+      base_revision: 6fba2447e95c451518584c35e25f5433f14d888c
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

README.md

@@ -0,0 +1,16 @@
+# ohthatsa
+
+An app to help you learn how to calculate day of the week from any date.
+
+## Getting Started
+
+This project is a starting point for a Flutter application.
+
+A few resources to get you started if this is your first Flutter project:
+
+- [Lab: Write your first Flutter app](https://docs.flutter.dev/get-started/codelab)
+- [Cookbook: Useful Flutter samples](https://docs.flutter.dev/cookbook)
+
+For help getting started with Flutter development, view the
+[online documentation](https://docs.flutter.dev/), which offers tutorials,
+samples, guidance on mobile development, and a full API reference.

analysis_options.yaml

@@ -0,0 +1,28 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at https://dart.dev/lints.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

android/.gitignore

@@ -0,0 +1,14 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+.cxx/
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/to/reference-keystore
+key.properties
+**/*.keystore
+**/*.jks

android/app/build.gradle.kts

@@ -0,0 +1,44 @@
+plugins {
+    id("com.android.application")
+    id("kotlin-android")
+    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+    id("dev.flutter.flutter-gradle-plugin")
+}
+
+android {
+    namespace = "net.broodjeaap.ohthatsa.ohthatsa"
+    compileSdk = flutter.compileSdkVersion
+    ndkVersion = flutter.ndkVersion
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_11.toString()
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId = "net.broodjeaap.ohthatsa.ohthatsa"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://flutter.dev/to/review-gradle-config.
+        minSdk = flutter.minSdkVersion
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutter.versionCode
+        versionName = flutter.versionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig = signingConfigs.getByName("debug")
+        }
+    }
+}
+
+flutter {
+    source = "../.."
+}

android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,45 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <application
+        android:label="ohthatsa"
+        android:name="${applicationName}"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:launchMode="singleTop"
+            android:taskAffinity=""
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.NormalTheme"
+              android:resource="@style/NormalTheme"
+              />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+    <!-- Required to query activities that can process text, see:
+         https://developer.android.com/training/package-visibility and
+         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
+
+         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.PROCESS_TEXT"/>
+            <data android:mimeType="text/plain"/>
+        </intent>
+    </queries>
+</manifest>

android/app/src/main/kotlin/net/broodjeaap/ohthatsa/ohthatsa/MainActivity.kt

@@ -0,0 +1,5 @@
+package net.broodjeaap.ohthatsa.ohthatsa
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity : FlutterActivity()

android/app/src/main/res/drawable-v21/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

android/app/src/main/res/drawable/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

android/app/src/main/res/values-night/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

android/app/src/main/res/values/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/build.gradle.kts

@@ -0,0 +1,21 @@
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+val newBuildDir: Directory = rootProject.layout.buildDirectory.dir("../../build").get()
+rootProject.layout.buildDirectory.value(newBuildDir)
+
+subprojects {
+    val newSubprojectBuildDir: Directory = newBuildDir.dir(project.name)
+    project.layout.buildDirectory.value(newSubprojectBuildDir)
+}
+subprojects {
+    project.evaluationDependsOn(":app")
+}
+
+tasks.register<Delete>("clean") {
+    delete(rootProject.layout.buildDirectory)
+}

android/gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
+android.useAndroidX=true
+android.enableJetifier=true

android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.12-all.zip

android/settings.gradle.kts

@@ -0,0 +1,25 @@
+pluginManagement {
+    val flutterSdkPath = run {
+        val properties = java.util.Properties()
+        file("local.properties").inputStream().use { properties.load(it) }
+        val flutterSdkPath = properties.getProperty("flutter.sdk")
+        require(flutterSdkPath != null) { "flutter.sdk not set in local.properties" }
+        flutterSdkPath
+    }
+
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
+
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id("dev.flutter.flutter-plugin-loader") version "1.0.0"
+    id("com.android.application") version "8.7.3" apply false
+    id("org.jetbrains.kotlin.android") version "2.1.0" apply false
+}
+
+include(":app")

ios/.gitignore

@@ -0,0 +1,34 @@
+**/dgph
+*.mode1v3
+*.mode2v3
+*.moved-aside
+*.pbxuser
+*.perspectivev3
+**/*sync/
+.sconsign.dblite
+.tags*
+**/.vagrant/
+**/DerivedData/
+Icon?
+**/Pods/
+**/.symlinks/
+profile
+xcuserdata
+**/.generated/
+Flutter/App.framework
+Flutter/Flutter.framework
+Flutter/Flutter.podspec
+Flutter/Generated.xcconfig
+Flutter/ephemeral/
+Flutter/app.flx
+Flutter/app.zip
+Flutter/flutter_assets/
+Flutter/flutter_export_environment.sh
+ServiceDefinitions.json
+Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!default.mode1v3
+!default.mode2v3
+!default.pbxuser
+!default.perspectivev3

ios/Flutter/AppFrameworkInfo.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>MinimumOSVersion</key>
+  <string>12.0</string>
+</dict>
+</plist>

ios/Flutter/Debug.xcconfig

@@ -0,0 +1 @@
+#include "Generated.xcconfig"

ios/Flutter/Release.xcconfig

@@ -0,0 +1 @@
+#include "Generated.xcconfig"

ios/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,616 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXBuildFile section */
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+		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
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+			remoteInfo = Runner;
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+/* End PBXContainerItemProxy section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
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+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
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+		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
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+		74858FAE1ED2DC5600515810 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
+		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Release.xcconfig; path = Flutter/Release.xcconfig; sourceTree = "<group>"; };
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+		97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
+		97C147021CF9000F007C117D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		97C146EB1CF9000F007C117D /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		331C8082294A63A400263BE5 /* RunnerTests */ = {
+			isa = PBXGroup;
+			children = (
+				331C807B294A618700263BE5 /* RunnerTests.swift */,
+			);
+			path = RunnerTests;
+			sourceTree = "<group>";
+		};
+		9740EEB11CF90186004384FC /* Flutter */ = {
+			isa = PBXGroup;
+			children = (
+				3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */,
+				9740EEB21CF90195004384FC /* Debug.xcconfig */,
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+				9740EEB31CF90195004384FC /* Generated.xcconfig */,
+			);
+			name = Flutter;
+			sourceTree = "<group>";
+		};
+		97C146E51CF9000F007C117D = {
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+			defaultConfigurationName = Release;
+		};
+		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147061CF9000F007C117D /* Debug */,
+				97C147071CF9000F007C117D /* Release */,
+				249021D4217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}

ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1510"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      customLLDBInitFile = "$(SRCROOT)/Flutter/ephemeral/flutter_lldbinit"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+         <TestableReference
+            skipped = "NO"
+            parallelizable = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "331C8080294A63A400263BE5"
+               BuildableName = "RunnerTests.xctest"
+               BlueprintName = "RunnerTests"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      customLLDBInitFile = "$(SRCROOT)/Flutter/ephemeral/flutter_lldbinit"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      enableGPUValidationMode = "1"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

ios/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

ios/Runner/AppDelegate.swift

@@ -0,0 +1,13 @@
+import Flutter
+import UIKit
+
+@main
+@objc class AppDelegate: FlutterAppDelegate {
+  override func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
+    GeneratedPluginRegistrant.register(with: self)
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+}

ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,122 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md

@@ -0,0 +1,5 @@
+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.

ios/Runner/Base.lproj/LaunchScreen.storyboard

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>

ios/Runner/Base.lproj/Main.storyboard

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

ios/Runner/Info.plist

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Ohthatsa</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>ohthatsa</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
+</dict>
+</plist>

ios/Runner/Runner-Bridging-Header.h

@@ -0,0 +1 @@
+#import "GeneratedPluginRegistrant.h"

ios/RunnerTests/RunnerTests.swift

@@ -0,0 +1,12 @@
+import Flutter
+import UIKit
+import XCTest
+
+class RunnerTests: XCTestCase {
+
+  func testExample() {
+    // If you add code to the Runner application, consider adding tests here.
+    // See https://developer.apple.com/documentation/xctest for more information about using XCTest.
+  }
+
+}

lib/main.dart

@@ -0,0 +1,80 @@
+import 'package:flutter/material.dart';
+import 'package:ohthatsa/pages/practice/PracticeSetup.dart';
+import 'package:ohthatsa/pages/practice/PracticeSetupPage.dart';
+import 'package:ohthatsa/pages/practice/PracticePage.dart';
+import 'package:ohthatsa/pages/practice/PracticeType.dart';
+
+import 'package:ohthatsa/pages/practice/instructions/LeapInstructionPage.dart';
+import 'package:ohthatsa/pages/practice/instructions/MonthInstructionPage.dart';
+import 'package:ohthatsa/pages/practice/instructions/YearInstructionPage.dart';
+import 'package:ohthatsa/pages/practice/instructions/CenturyInstructionPage.dart';
+import 'package:ohthatsa/pages/practice/instructions/ModInstructionPage.dart';
+import 'package:ohthatsa/pages/practice/instructions/AllInstructionPage.dart';
+
+
+Future<void> main() async {
+  runApp(OhThatsA());
+}
+
+class OhThatsA extends StatelessWidget {
+  // This widget is the root of your application.
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: "OhThatsA",
+      home: PracticeSetupPage(),
+      onGenerateRoute: RouteGenerator.generateRoute,
+    );
+  }
+}
+
+class RouteGenerator {
+  static Route<dynamic> generateRoute(RouteSettings settings){
+    switch(settings.name){
+      case "/": {
+        return MaterialPageRoute(builder: (context) => PracticeSetupPage());
+      }
+      case "/practice/setup": {
+        return MaterialPageRoute(builder: (context) => PracticeSetupPage());
+      }
+      case "/practice/practice": {
+        if (settings.arguments != null){
+          var args = settings.arguments as PracticeSetup;
+          return MaterialPageRoute(builder: (context) => PracticePage(args));
+        } else {
+          return MaterialPageRoute(builder: (context) => PracticePage(PracticeSetup(0, true, PracticeType.month)));
+        }
+      }
+      case "/instructions/month": {
+        return MaterialPageRoute(builder: (context) => MonthInstructionPage());
+      }
+      case "/instructions/year": {
+        return MaterialPageRoute(builder: (context) => YearInstructionPage());
+      }
+      case "/instructions/century": {
+        return MaterialPageRoute(builder: (context) => CenturyInstructionPage());
+      }
+      case "/instructions/leap": {
+        return MaterialPageRoute(builder: (context) => LeapInstructionPage());
+      }
+      case "/instructions/mod": {
+        return MaterialPageRoute(builder: (context) => ModInstructionPage());
+      }
+      case "/instructions/all": {
+        return MaterialPageRoute(builder: (context) => AllInstructionPage());
+      }
+      default: {
+        return MaterialPageRoute(
+          builder: (context) => Scaffold(
+            appBar: AppBar(title: Text('Page Not Found')),
+            body: Center(child: Text('404 - Page Not Found')),
+          ),
+        );
+      }
+    }
+  }
+
+
+}
+
+

lib/other/AppDrawer.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+class AppDrawer extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Drawer(
+      child: ListView(
+        padding: EdgeInsets.zero,
+        children: <Widget>[
+          DrawerHeader(
+            child: Text("Oh That's A ..."),
+          ),
+          ListTile(
+              title: Text("Practice"),
+              onTap: () {
+                Navigator.pop(context);
+                Navigator.pushNamed(context, "/practice/setup");
+              }
+          ),
+        ],
+      )
+    );
+  }
+}

lib/pages/practice/PracticeAnswer.dart

@@ -0,0 +1,23 @@
+import 'package:intl/intl.dart';
+
+class PracticeAnswer {
+  final int question;
+  final int answer;
+  final bool correct;
+  DateTime dateTime;
+  int sessionId = -1;
+
+  PracticeAnswer(this.question, this.answer, this.correct) : dateTime = DateTime.now();
+
+  Map<String, dynamic> toMap() {
+    // Should match the SQLite format YYYY-MM-DD HH:MM:SS.SSS
+    String timeFormat = DateFormat("yyyy-MM-dd HH:mm:ss.SSS").format(dateTime);
+    return <String, dynamic>{
+      "question": question,
+      "answer": answer,
+      "correct": correct ? 1 : 0,
+      "time": timeFormat,
+      "sessionId": sessionId
+    };
+  }
+}

lib/pages/practice/PracticeDatabase.dart

@@ -0,0 +1,168 @@
+import 'dart:async';
+import 'dart:core';
+
+import 'package:ohthatsa/pages/practice/PracticeAnswer.dart';
+import 'package:ohthatsa/pages/practice/PracticeType.dart';
+import 'package:sqflite/sqflite.dart';
+import 'package:path/path.dart';
+
+
+class PracticeDatabase {
+  static _onCreate(Database database, int version) async {
+    String types = PracticeType.values.map((type) => "'${type.toString().split(".").last}'").join(", ");
+    await database.execute('''
+    CREATE TABLE PracticeSession (
+      id INTEGER PRIMARY KEY AUTOINCREMENT,
+      type TEXT CHECK( type IN ($types) ) NOT NULL
+    );
+    ''');
+    await database.execute('''
+    CREATE TABLE PracticeAnswer (
+      id INTEGER PRIMARY KEY AUTOINCREMENT,
+      sessionId INTEGER NOT NULL,
+      question INTEGER NOT NULL,
+      answer INTEGER NOT NULL,
+      time DATETIME NOT NULL,
+      correct BOOLEAN NOT NULL,
+      FOREIGN KEY(sessionId) REFERENCES PracticeSession(id)
+    );
+    ''');
+    await database.execute('''
+    CREATE VIEW AnswersView AS
+    SELECT
+      PracticeSession.id as practice_id,
+      PracticeAnswer.id as answer_id,
+      PracticeSession.type as type,
+      PracticeAnswer.question as question,
+      PracticeAnswer.answer as answer,
+      PracticeAnswer.correct as correct,
+      PracticeAnswer.time as time
+    FROM PracticeSession 
+        INNER JOIN PracticeAnswer on PracticeSession.id = PracticeAnswer.sessionId;
+    ''');
+    await database.execute('''
+    CREATE VIEW AnswersCorrectByTypeViewAll AS
+    SELECT 
+        type,
+        SUM(correct = 1)*1.0 AS correct,
+        SUM(correct = 0)*1.0 AS incorrect,
+        COUNT(*) AS total
+      FROM
+        AnswersView
+      GROUP BY
+        type;
+    ''');
+    await database.execute('''
+    CREATE VIEW AnswersCorrectByTypeView7d AS
+    SELECT 
+        type,
+        SUM(correct = 1)*1.0 AS correct,
+        SUM(correct = 0)*1.0 AS incorrect,
+        COUNT(*) AS total,
+        CAST(
+          strftime('%s', time) 
+          AS INTEGER
+        ) as s_time,
+        CAST(
+          strftime("%s", DATETIME('now', '-7 day')) 
+          AS INTEGER
+        ) as before
+      FROM
+        AnswersView
+      WHERE
+        s_time > before
+      GROUP BY
+        type;
+    ''');
+    await database.execute('''
+    CREATE VIEW AnswersCorrectByTypeView30d AS
+    SELECT 
+        type,
+        SUM(correct = 1)*1.0 AS correct,
+        SUM(correct = 0)*1.0 AS incorrect,
+        COUNT(*) AS total,
+        CAST(
+          strftime('%s', time) 
+          AS INTEGER
+        ) as s_time,
+        CAST(
+          strftime("%s", DATETIME('now', '-1 month')) 
+          AS INTEGER
+        ) as before
+      FROM
+        AnswersView
+      WHERE
+        s_time > before
+      GROUP BY
+        type;
+    ''');
+  }
+
+  static Future<Database> getDatabase() async {
+    var databasesPath = await getDatabasesPath();
+    final databaseName = "answers.db";
+
+    return await openDatabase(
+      join(databasesPath, databaseName),
+      version: 1,
+      onCreate: _onCreate
+    );
+  }
+
+  static insertAnswers(List<PracticeAnswer> answers, PracticeType practiceType) async {
+    var db = await getDatabase();
+    int sessionId = await db.insert("PracticeSession",
+        <String, dynamic>{
+          "type": practiceType.toString().split(".").last
+        }
+    );
+    var batch = db.batch();
+    answers.forEach((answer) {
+      answer.sessionId = sessionId;
+      batch.insert("PracticeAnswer", answer.toMap());
+    });
+    await batch.commit(noResult: true);
+  }
+
+  // TODO test the database
+  static Future<Map<String, double>> getStats() async {
+    var db = await getDatabase();
+    List<Map<String, dynamic>> answers = await db.rawQuery('''
+      SELECT
+        "All" AS range,
+        type,
+        correct,
+        incorrect,
+        total,
+        ROUND((correct / total) * 100, 1) AS ratio
+      FROM
+        AnswersCorrectByTypeViewAll
+      UNION ALL
+      SELECT
+        "7d" AS range,
+        type,
+        correct,
+        incorrect,
+        total,
+        ROUND((correct / total) * 100, 1) AS ratio
+      FROM
+        AnswersCorrectByTypeView7d
+      UNION ALL
+      SELECT
+        "30d" AS range,
+        type,
+        correct,
+        incorrect,
+        total,
+        ROUND((correct / total) * 100, 1) AS ratio
+      FROM
+        AnswersCorrectByTypeView30d;
+    ''');
+    Map<String, double> stats = Map<String, double>();
+    for(var stat in answers){
+      var typeRange = "${stat['range']} ${stat['type']}";
+      stats[typeRange] = stat['ratio'] as double;
+    }
+    return stats;
+  }
+}

lib/pages/practice/PracticePage.dart

@@ -0,0 +1,193 @@
+import 'package:flutter/material.dart';
+import 'package:ohthatsa/pages/practice/PracticeDatabase.dart';
+import 'package:ohthatsa/pages/practice/PracticeSetup.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThing.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThingAll.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThingCentury.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThingLeap.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThingMod.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThingMonth.dart';
+import 'package:ohthatsa/other/AppDrawer.dart';
+import 'package:ohthatsa/pages/practice/PracticeType.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThingYear.dart';
+import 'package:ohthatsa/util/TextStyles.dart';
+
+
+class PracticePage extends StatefulWidget {
+  final PracticeSetup practiceSetup;
+  PracticePage(
+      this.practiceSetup
+  );
+  @override
+  PracticePageState createState() => PracticePageState(practiceSetup);
+}
+
+class PracticePageState extends State<PracticePage> {
+  int _startCount = 0;
+  bool _showCorrect = true;
+  late PracticeType practiceType;
+  late PracticeThing practiceThing;
+
+  int _count = 0;
+  int _correct = 0;
+  int _incorrect = 0;
+
+  PracticePageState(PracticeSetup practiceSetup){
+    this._startCount = practiceSetup.count;
+    this._showCorrect = practiceSetup.showCorrect;
+    practiceType = practiceSetup.practiceType;
+    switch(practiceType){
+      case (PracticeType.month): {
+        this.practiceThing = PracticeThingMonth(this);
+        break;
+      }
+      case (PracticeType.year): {
+        this.practiceThing = PracticeThingYear(this);
+        break;
+      }
+      case (PracticeType.century): {
+        this.practiceThing = PracticeThingCentury(this);
+        break;
+      }
+      case (PracticeType.leap): {
+        this.practiceThing = PracticeThingLeap(this);
+        break;
+      }
+      case (PracticeType.mod): {
+        this.practiceThing = PracticeThingMod(this);
+        break;
+      }
+      case (PracticeType.all): {
+        this.practiceThing = PracticeThingAll(this);
+        break;
+      }
+      default: {
+        break;
+      }
+    }
+  }
+
+  Widget getAnswerRow(){
+    List<Widget> answerBoxes = [];
+    answerBoxes.addAll(practiceThing.getBoolAnswers().map(
+        (isCorrect) => Expanded(child: Container(height: 50, color: isCorrect ? Colors.green : Colors.red))
+    ));
+    answerBoxes.addAll(Iterable.generate(_startCount - _count).map(
+        (_) => Expanded(child: Container(height: 50, color: Colors.blue))
+    ));
+    return Row(children: answerBoxes);
+  }
+
+  SimpleDialog finishedPracticeDialog() {
+    return SimpleDialog(
+      title: Text(
+          "Practice Complete!",
+          style: TextStyle(fontSize: 25, color: Colors.blue)
+      ),
+      contentPadding: EdgeInsets.all(50),
+      children: <Widget>[
+        Row(
+          mainAxisAlignment: MainAxisAlignment.spaceBetween,
+          children: <Widget>[
+            Text("Rounds of Practice:"),
+            Text(_startCount.toString())
+          ]
+        ),
+        Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: <Widget>[
+              Text("Correct:"),
+              Text(_correct.toString()),
+            ]
+        ),
+        Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: <Widget>[
+              Text("Incorrect:"),
+              Text(_incorrect.toString()),
+            ]
+        ),
+        Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: <Widget>[
+              Text(
+                (_correct / _startCount * 100).round().toString() + "%",
+                style: TextStyle(
+                  color: (_correct / _startCount * 100) > 70 ? Colors.green : Colors.red,
+                  fontSize: 30,
+                )
+              ),
+            ]
+        ),
+      ]
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      drawer: AppDrawer(),
+      appBar: AppBar(
+        title: practiceThing.getAppBarTitleText(),
+      ),
+      body: Center(
+        child: Container(
+          padding: EdgeInsets.all(20),
+          child: Column(
+              children: <Widget>[
+                Row(
+                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                  children: <Widget>[
+                    Text20("Correct: " + _correct.toString()),
+                    Text20((_startCount - _count).toString() + " Left"),
+                    Text20("Incorrect: " + _incorrect.toString()),
+                  ],
+                ),
+                Column(
+                  children: <Widget>[
+                    Opacity(
+                        opacity: 0.3,
+                        child: practiceThing.getSecondLastAnswerText(_showCorrect)
+                    ),
+                    Opacity(
+                        opacity: 0.6,
+                        child: practiceThing.getLastAnswerText(_showCorrect)
+                    ),
+                    practiceThing.getCurrentQuestionText()
+                  ]
+                ),
+                practiceThing.getButtons(),
+                Align(
+                    alignment: FractionalOffset.bottomCenter,
+                    child: getAnswerRow()
+                )
+              ]
+          )
+        )
+      )
+    );
+  }
+
+  void checkAnswer(int answer){
+    if(practiceThing.answer(answer)){
+      _correct += 1;
+    } else {
+      _incorrect += 1;
+    }
+    _count += 1;
+    setState(() => {
+      practiceThing.next()
+    });
+    if((_startCount - _count) == 0) {
+      PracticeDatabase.insertAnswers(practiceThing.answers, practiceType);
+
+      showDialog(
+        context: context,
+        builder: (context) => finishedPracticeDialog()
+      ).then((val) {
+        Navigator.pop(context);
+      });
+      return;
+    }
+  }
+}

lib/pages/practice/PracticeSetup.dart

@@ -0,0 +1,9 @@
+import 'package:ohthatsa/pages/practice/PracticeType.dart';
+
+class PracticeSetup {
+  final int count;
+  final bool showCorrect;
+  final PracticeType practiceType;
+
+  PracticeSetup(this.count, this.showCorrect, this.practiceType);
+}

lib/pages/practice/PracticeSetupPage.dart

@@ -0,0 +1,150 @@
+import 'package:flutter/material.dart';
+import 'package:numberpicker/numberpicker.dart';
+import 'package:ohthatsa/other/AppDrawer.dart';
+import 'package:ohthatsa/pages/practice/PracticeDatabase.dart';
+import 'package:ohthatsa/pages/practice/PracticeSetup.dart';
+import 'package:ohthatsa/pages/practice/PracticeType.dart';
+import 'package:ohthatsa/util/Extensions.dart';
+import 'package:ohthatsa/util/TextStyles.dart';
+
+import 'instructions/MonthInstructionPage.dart';
+
+class PracticeSetupPage extends StatefulWidget {
+  @override
+  _PracticeSetupState createState() => _PracticeSetupState();
+}
+
+class _PracticeSetupState extends State<PracticeSetupPage> {
+  int _count = 12;
+  bool _showCorrect = true;
+
+  Future<Map<String, double>> _answerStats = Future.value({});
+
+  @override
+  void initState() {
+    this._answerStats = PracticeDatabase.getStats();
+    super.initState();
+  }
+
+  TableRow getStatTableRow(AsyncSnapshot<Map<String, double>> snapshot, PracticeType practiceType){
+    final typeString = practiceType.toString().split(".").last;
+    return TableRow(
+        children: <Widget>[
+          TextButton(
+            child: Text(typeString.capitalize()),
+            style: TextButton.styleFrom(
+              backgroundColor: Colors.blue,
+              foregroundColor: Colors.white,
+            ),
+            onPressed: () {
+              Navigator.pushNamed(
+                context,
+                '/practice/practice',
+                arguments: PracticeSetup(_count, _showCorrect, practiceType),
+              );
+            },
+            onLongPress: () {
+              Navigator.pushNamed(
+                context,
+                '/instructions/' + practiceType.toString().split(".").last,
+              );
+            },
+          ),
+          getStatTableText(snapshot.hasData && snapshot.data != null ? snapshot.data!["7d $typeString"] : null),
+          getStatTableText(snapshot.hasData && snapshot.data != null ? snapshot.data!["30d $typeString"] : null),
+          getStatTableText(snapshot.hasData && snapshot.data != null ? snapshot.data!["All $typeString"] : null),
+        ]
+    );
+  }
+
+  Widget getStatTableText(double? value){
+    var text = "-";
+    var color = Colors.grey.shade500;
+    if (value != null){
+      text = value.toString() + "%";
+      color = value >= 70 ? Colors.green : Colors.red;
+    }
+    return Align(
+      alignment: Alignment.center,
+      child: Text(
+        text,
+        style: TextStyle(
+          fontSize: 25,
+          color: color,
+        ),
+        textAlign: TextAlign.center,
+      )
+    );
+  }
+
+  @override
+  Widget build(BuildContext context){
+    return Scaffold(
+      drawer: AppDrawer(),
+      appBar: AppBar(
+        title: Text("Practice"),
+      ),
+      body: Center(
+        child: Container(
+          padding: EdgeInsets.all(20),
+          child: Column(
+            children: <Widget>[
+              Row(
+                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                children: <Widget>[
+                  Text20("How many rounds"),
+                  NumberPicker(
+                    axis: Axis.horizontal,
+                    value: _count,
+                    minValue: 1,
+                    maxValue: 500,
+                    onChanged: (newNumber) =>
+                        setState(() => _count = newNumber),
+                  )
+                ]
+              ),
+              CheckboxListTile(
+                title: Text20("Show correct Answer"),
+                value: _showCorrect,
+                onChanged: (value) {
+                  setState(() {
+                    _showCorrect = !_showCorrect;
+                  });
+                }
+              ),
+              Spacer(),
+              FutureBuilder<Map<String, double>>(
+                future: _answerStats,
+                builder: (BuildContext context, AsyncSnapshot<Map<String, double>> snapshot){
+                  return Table(
+                    children: <TableRow>[
+                      TableRow(
+                          children: <Widget>[ // Header
+                            Text(""),
+                            Text("7d", textAlign: TextAlign.center, style: TextStyle(fontSize: 25)),
+                            Text("30d", textAlign: TextAlign.center, style: TextStyle(fontSize: 25)),
+                            Text("All", textAlign: TextAlign.center, style: TextStyle(fontSize: 25)),
+                          ]
+                      ),
+                      getStatTableRow(snapshot, PracticeType.month),
+                      getStatTableRow(snapshot, PracticeType.year),
+                      getStatTableRow(snapshot, PracticeType.century),
+                      getStatTableRow(snapshot, PracticeType.leap),
+                      getStatTableRow(snapshot, PracticeType.mod),
+                      getStatTableRow(snapshot, PracticeType.all),
+                    ]
+                  );
+                }
+              ),
+              Text(
+                "Long press for instructions",
+                style: TextStyle(fontSize: 10, color: Colors.grey)
+              )
+            ]
+          )
+        )
+      )
+    );
+  }
+}
+

lib/pages/practice/PracticeType.dart

@@ -0,0 +1,8 @@
+enum PracticeType {
+  month,
+  year,
+  century,
+  leap,
+  mod,
+  all
+}

lib/pages/practice/instructions/AllInstructionPage.dart

@@ -0,0 +1,90 @@
+import 'package:flutter/material.dart';
+import 'package:numberpicker/numberpicker.dart';
+import 'package:ohthatsa/other/AppDrawer.dart';
+import 'package:ohthatsa/util/DayCalculator.dart';
+import 'package:ohthatsa/util/Months.dart';
+import 'package:ohthatsa/util/TextStyles.dart';
+
+class AllInstructionPage extends StatefulWidget {
+  @override
+  _AllInstructionPageState createState() => _AllInstructionPageState();
+}
+
+class _AllInstructionPageState extends State<AllInstructionPage> {
+
+  @override
+  void initState(){
+    super.initState();
+  }
+
+  static const daysOfTheWeek = [
+    "Sunday",
+    "Monday",
+    "Tuesday",
+    "Wednesday",
+    "Thursday",
+    "Friday",
+    "Saturday"
+  ];
+
+  @override
+  Widget build(BuildContext context){
+    return Scaffold(
+        drawer: AppDrawer(),
+        appBar: AppBar(
+            title: Text("All Instructions")
+        ),
+
+        body: Column(
+            children: <Widget>[
+              Container(
+                padding: EdgeInsets.fromLTRB(0, 50, 0, 10),
+                child:Column(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: <Widget>[
+                      Text20("To calculate the weekday"),
+                      Text20("Add all the values together:"),
+                      Text20("Day of the Month"),
+                      Text15("+"),
+                      Text20("Month Value"),
+                      Text15("+"),
+                      Text20("Year Value"),
+                      Text15("+"),
+                      Text20("Century Value"),
+                      Text15("-"),
+                      Text20("Leap Value (1 or 0)"),
+                      Text15("(if in January/February)"),
+                      Text15(""),
+                      Text20("Mod the result by 7"),
+                      Text15(""),
+                      Text20("And check what day it is:"),
+                      Table(
+                        children: List.generate(daysOfTheWeek.length, (i) =>
+                          TableRow(
+                            children: <Widget> [
+                              TableCell(
+                                child: Text(
+                                  daysOfTheWeek[i],
+                                  textAlign: TextAlign.right,
+                                  style: TextStyles.textStyle20
+                                )
+                              ),
+                              TableCell(
+                                child: Text(
+                                  i.toString(),
+                                  textAlign: TextAlign.center,
+                                  style: TextStyles.textStyle20
+                                )
+                              )
+                            ]
+                          )
+                        )
+                      )
+                    ]
+                ),
+              ),
+            ]
+        )
+    );
+  }
+}

lib/pages/practice/instructions/CenturyInstructionPage.dart

@@ -0,0 +1,152 @@
+import 'package:flutter/material.dart';
+import 'package:ohthatsa/other/AppDrawer.dart';
+import 'package:ohthatsa/util/Months.dart';
+
+class CenturyInstructionPage extends StatelessWidget{
+
+  @override
+  Widget build(BuildContext context){
+    return Scaffold(
+        drawer: AppDrawer(),
+        appBar: AppBar(
+            title: Text("Year Instructions")
+        ),
+        body: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            Text("Memorize these values:", style: TextStyle(fontSize: 25, color: Colors.blue)),
+            Table(
+                children: <TableRow>[
+                  TableRow(
+                      children: <Widget>[
+                        TableCell(
+                            child: Text(
+                                "1700-1799",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.right
+                            )
+                        ),
+                        TableCell(
+                            child: Text(
+                                "4",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.center
+                            )
+                        )
+                      ]
+                  ),
+                  TableRow(
+                      children: <Widget>[
+                        TableCell(
+                            child: Text(
+                                "1800-1899",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.right
+                            )
+                        ),
+                        TableCell(
+                            child: Text(
+                                "2",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.center
+                            )
+                        )
+                      ]
+                  ),
+                  TableRow(
+                      children: <Widget>[
+                        TableCell(
+                            child: Text(
+                                "1900-1999",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.right
+                            )
+                        ),
+                        TableCell(
+                            child: Text(
+                                "0",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.center
+                            )
+                        )
+                      ]
+                  ),
+                  TableRow(
+                      children: <Widget>[
+                        TableCell(
+                            child: Text(
+                                "2000-2099",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.right
+                            )
+                        ),
+                        TableCell(
+                            child: Text(
+                                "6",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.center
+                            )
+                        )
+                      ]
+                  ),
+                  TableRow(
+                      children: <Widget>[
+                        TableCell(
+                            child: Text(
+                                "2100-2199",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.right
+                            )
+                        ),
+                        TableCell(
+                            child: Text(
+                                "4",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.center
+                            )
+                        )
+                      ]
+                  ),
+                  TableRow(
+                      children: <Widget>[
+                        TableCell(
+                            child: Text(
+                                "2200-2299",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.right
+                            )
+                        ),
+                        TableCell(
+                            child: Text(
+                                "2",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.center
+                            )
+                        )
+                      ]
+                  ),
+                  TableRow(
+                      children: <Widget>[
+                        TableCell(
+                            child: Text(
+                                "2300-2399",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.right
+                            )
+                        ),
+                        TableCell(
+                            child: Text(
+                                "0",
+                                style: TextStyle(fontSize: 25),
+                                textAlign: TextAlign.center
+                            )
+                        )
+                      ]
+                  )
+                ]
+            )
+          ]
+        )
+    );
+  }
+}

lib/pages/practice/instructions/LeapInstructionPage.dart

@@ -0,0 +1,122 @@
+import 'package:flutter/material.dart';
+import 'package:numberpicker/numberpicker.dart';
+import 'package:ohthatsa/other/AppDrawer.dart';
+import 'package:ohthatsa/util/DayCalculator.dart';
+import 'package:ohthatsa/util/TextStyles.dart';
+
+class LeapInstructionPage extends StatefulWidget {
+  @override
+  _LeapInstructionPageState createState() => _LeapInstructionPageState();
+}
+
+class _LeapInstructionPageState extends State<LeapInstructionPage> {
+  int year = 0;
+  bool isLeapYear = true;
+  bool divBy4 = true;
+  bool divBy100 = true;
+  bool divBy400 = true;
+
+  @override
+  void initState(){
+    super.initState();
+    this.setYear(DateTime.now().year);
+  }
+
+  void setYear(int newYear){
+    year = newYear;
+    isLeapYear = DayCalculator.isLeapYear(year);
+    divBy4 = (year % 4) == 0;
+    divBy100 = (year % 100) == 0;
+    divBy400 = (year % 400) == 0;
+    setState(() {});
+  }
+
+  @override
+  Widget build(BuildContext context){
+    return Scaffold(
+        drawer: AppDrawer(),
+        appBar: AppBar(
+            title: Text("Leap Year Instructions")
+        ),
+
+        body: PageView(
+          children: <Widget>[
+            Container(
+              padding: EdgeInsets.fromLTRB(0, 50, 0, 10),
+              child:Column(
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: <Widget>[
+                    Text20("A year is a leap year if..."),
+                    Text20("It is divisible by 4, unless..."),
+                    Text20("It's also divisible by 100, unless..."),
+                    Text20("It's divisible by 400"),
+                    Spacer(),
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: <Widget>[
+                        Text("1", style: TextStyles.textStyle20.apply(color: Colors.blue)),
+                        Text(" - ", style: TextStyles.textStyle20.apply(color: Colors.grey)),
+                        Text("2", style: TextStyles.textStyle20.apply(color: Colors.grey)),
+                      ],
+                    )
+                  ]
+              )
+            ),
+            Container(
+              padding: EdgeInsets.fromLTRB(0, 50, 0, 10),
+              child: Column(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: <Widget>[
+                  NumberPicker(
+                      value: year,
+                      minValue: 0,
+                      maxValue: 10000,
+                      onChanged: (newYear) => { this.setYear(newYear) }
+                  ),
+                  Visibility(
+                    visible: divBy4,
+                    child: Text20(year.toString() + " is divisible by 4")
+                  ),
+                  Visibility(
+                      visible: divBy100,
+                      child: Column(
+                        children: <Widget>[
+                          Text20("But..."),
+                          Text20(year.toString() + " is also divisible by 100")
+                        ],
+                      )
+                  ),
+                  Visibility(
+                      visible: divBy400,
+                      child: Column(
+                        children: <Widget>[
+                          Text20("But..."),
+                          Text20(year.toString() + " is also divisible by 400")
+                        ],
+                      )
+                  ),
+                  Row(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: <Widget>[
+                      Text20("So " + year.toString() + " is"),
+                      Text20(this.isLeapYear ? " " : " not "),
+                      Text20("a leap year")
+                    ],
+                  ),
+                  Spacer(),
+                  Row(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: <Widget>[
+                      Text("1", style: TextStyles.textStyle20.apply(color: Colors.grey)),
+                      Text(" - ", style: TextStyles.textStyle20.apply(color: Colors.grey)),
+                      Text("2", style: TextStyles.textStyle20.apply(color: Colors.blue)),
+                    ],
+                  )
+                ],
+              )
+            )
+        ]
+      )
+    );
+  }
+}

lib/pages/practice/instructions/ModInstructionPage.dart

@@ -0,0 +1,77 @@
+import 'package:flutter/material.dart';
+import 'package:numberpicker/numberpicker.dart';
+import 'package:ohthatsa/other/AppDrawer.dart';
+import 'package:ohthatsa/util/DayCalculator.dart';
+import 'package:ohthatsa/util/Months.dart';
+import 'package:ohthatsa/util/TextStyles.dart';
+
+class ModInstructionPage extends StatefulWidget {
+  @override
+  _ModInstructionPageState createState() => _ModInstructionPageState();
+}
+
+class _ModInstructionPageState extends State<ModInstructionPage> {
+  int value = 0;
+  int div = 0;
+  int remainder = 0;
+
+  @override
+  void initState(){
+    super.initState();
+    this.setValue(5);
+  }
+
+  void setValue(int newValue){
+    value = newValue;
+    div = value ~/ 7;
+    remainder = value % 7;
+    setState(() {});
+  }
+
+  @override
+  Widget build(BuildContext context){
+    return Scaffold(
+        drawer: AppDrawer(),
+        appBar: AppBar(
+            title: Text("Modulus Instructions")
+        ),
+
+        body: Column(
+            children: <Widget>[
+              Container(
+                  padding: EdgeInsets.fromLTRB(0, 50, 0, 10),
+                  child:Column(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: <Widget>[
+                        Text20("Modulus (Mod) is the remainder after dividing"),
+                        NumberPicker(
+                            value: value,
+                            minValue: 0,
+                            maxValue: 150,
+                            onChanged: (newValue) => { this.setValue(newValue) }
+                        ),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: <Widget>[
+                            Text(value.toString(), style: TextStyles.textStyle20.apply(color: Colors.green)),
+                            Text20(" divided by 7 is " + div.toString()),
+                          ],
+                        ),
+                        Text20("But that leaves " + remainder.toString() + " left over"),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: <Widget>[
+                            Text20("So the result of "),
+                            Text(value.toString(), style: TextStyles.textStyle20.apply(color: Colors.green)),
+                            Text20(" mod 7 is "),
+                            Text(remainder.toString(), style: TextStyles.textStyle20.apply(decoration: TextDecoration.underline)),
+                          ],
+                        ),
+                      ]
+                  ),
+              ),
+            ]
+        )
+    );
+  }
+}

lib/pages/practice/instructions/MonthInstructionPage.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+import 'package:ohthatsa/other/AppDrawer.dart';
+import 'package:ohthatsa/util/Months.dart';
+
+class MonthInstructionPage extends StatelessWidget{
+  TableRow getMonthTableRow(MapEntry<String, Month> month) {
+    return TableRow(
+        children: [
+          TableCell(
+              child: Text(
+                  month.key,
+                  style: TextStyle(fontSize: 25),
+                  textAlign: TextAlign.right
+              )
+          ),
+          TableCell(
+              child: Text(
+                  month.value.value.toString(),
+                  style: TextStyle(fontSize: 25),
+                  textAlign: TextAlign.center
+              )
+          )
+        ]
+    );
+  }
+
+  @override
+  Widget build(BuildContext context){
+    return Scaffold(
+        drawer: AppDrawer(),
+        appBar: AppBar(
+            title: Text("Year Instructions")
+        ),
+        body: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            Text("Memorize these values:", style: TextStyle(fontSize: 25, color: Colors.blue)),
+            Table(
+              children: Months.stringMap.entries.map(getMonthTableRow).toList()
+            )
+          ]
+        )
+    );
+  }
+}

lib/pages/practice/instructions/YearInstructionPage.dart

@@ -0,0 +1,173 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:numberpicker/numberpicker.dart';
+
+import 'package:ohthatsa/other/AppDrawer.dart';
+import 'package:ohthatsa/util/DayCalculator.dart';
+import 'package:ohthatsa/util/TextStyles.dart';
+import 'package:term_glyph/term_glyph.dart' as glyph;
+
+class YearInstructionPage extends StatefulWidget {
+  @override
+  _YearInstructionPageState createState() => _YearInstructionPageState();
+}
+
+class _YearInstructionPageState extends State<YearInstructionPage> {
+  int year = 0;
+  int yy = 0;
+  String centuriesString = "";
+  String yyString = "";
+  double yyDiv4 = 0.0;
+  int yyDiv4Floored = 0;
+  int yearValue = 0;
+
+
+  @override
+  void initState(){
+    super.initState();
+    this.setYearValues(DateTime.now().year);
+  }
+  void setYearValues(newYear){
+    year = newYear;
+    yy = year % 100;
+    centuriesString = (year ~/ 100).toString();
+    yyString = year.toString().substring(2);
+    yyDiv4 = yy / 4;
+    yyDiv4Floored = yyDiv4.floor();
+    yearValue = DayCalculator.getYearValue(year);
+
+    setState(() {});
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+        drawer: AppDrawer(),
+        appBar: AppBar(
+            title: Text("Year Instructions")
+        ),
+        body: PageView(
+            children: <Widget>[
+              Container(
+                  padding: EdgeInsets.fromLTRB(0, 50, 0, 10),
+                  child: Column(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    crossAxisAlignment: CrossAxisAlignment.center,
+                    children: <Widget>[
+                      Text20("Take only the last two digits: "),
+                      Row(
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        children: <Widget>[
+                          Text20("YY", color: Colors.grey),
+                          Text20("YY", color: Colors.green),
+                        ],
+                      ),
+                      Text20("Calculate:"),
+                      Row(
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        children: <Widget>[
+                          Text20("("),
+                          Text20("YY", color: Colors.green),
+                          Text20(" + floor("),
+                          Text20("YY", color: Colors.green),
+                          Text20(" / 4)) % 7"),
+                        ],
+                      ),
+                      Spacer(),
+                      Row(
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        children: <Widget>[
+                          Text20("1", color: Colors.blue),
+                          Text20(" - ", color: Colors.grey),
+                          Text20("2", color: Colors.grey),
+                        ],
+                      )
+                    ],
+                  )
+              ),
+              Container(
+                  padding: EdgeInsets.fromLTRB(0, 50, 0, 10),
+                  child: Column(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      crossAxisAlignment: CrossAxisAlignment.center,
+                      children: <Widget>[
+                        NumberPicker(
+                            value: year,
+                            minValue: 1700,
+                            maxValue: 2399,
+                            onChanged: (newYear) => this.setYearValues(newYear)
+                        ),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: <Widget>[
+                            Text20("For "),
+                            Text20(centuriesString),
+                            Text20(year.toString().substring(2), color: Colors.green),
+                            Text20(" our formula becomes: "),
+                          ],
+                        ),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: <Widget>[
+                            Text20("("),
+                            Text20(yyString, color: Colors.green),
+                            Text20(" + floor("),
+                            Text20(yyString, color: Colors.green, decor: TextDecoration.underline),
+                            Text20(" / 4", decor: TextDecoration.underline),
+                            Text20(")) % 7"),
+                          ],
+                        ),
+                        Text(glyph.unicodeGlyphs.downArrow, style: TextStyle(fontSize: 15)),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: <Widget>[
+                            Text20("("),
+                            Text20(yyString, color: Colors.green),
+                            Text20(" + "),
+                            Text20("floor(" + yyDiv4.toString() + ")", decor: TextDecoration.underline),
+                            Text20(") % 7"),
+                          ],
+                        ),
+                        Text(glyph.unicodeGlyphs.downArrow, style: TextStyle(fontSize: 15)),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: <Widget>[
+                            Text20("(", decor: TextDecoration.underline),
+                            Text20(yyString, color: Colors.green, decor: TextDecoration.underline),
+                            Text20(" + " + yyDiv4Floored.toString() + ")", decor: TextDecoration.underline),
+                            Text20(" % 7"),
+                          ],
+                        ),
+                        Text(glyph.unicodeGlyphs.downArrow, style: TextStyle(fontSize: 15)),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: <Widget>[
+                            Text20((yy + yyDiv4Floored).toString(), decor: TextDecoration.underline),
+                            Text20(" % 7", decor: TextDecoration.underline),
+                          ],
+                        ),
+                        Text(glyph.unicodeGlyphs.downArrow, style: TextStyle(fontSize: 15)),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: <Widget>[
+                            Text20("So the year value of " + year.toString() + " is: "),
+                            Text20(yearValue.toString(), decor: TextDecoration.underline),
+                          ],
+                        ),
+                        Spacer(),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: <Widget>[
+                            Text20("1", color: Colors.grey),
+                            Text20(" - ", color: Colors.grey),
+                            Text20("2", color: Colors.blue),
+                          ],
+                        )
+                      ]
+                  )
+              )
+            ]
+        )
+    );
+  }
+}

lib/pages/practice/thing/PracticeThing.dart

@@ -0,0 +1,60 @@
+import 'dart:math';
+
+import 'package:flutter/material.dart';
+
+import 'package:ohthatsa/pages/practice/PracticeAnswer.dart';
+import 'package:ohthatsa/pages/practice/PracticePage.dart';
+
+abstract class PracticeThing {
+  final random = Random();
+  final List<PracticeAnswer> answers = [];
+
+  final PracticePageState practicePageState;
+
+  PracticeThing(this.practicePageState){
+    next();
+  }
+
+  bool isCorrect(int answer);
+  bool answer(int answer);
+  void next();
+  List<bool> getBoolAnswers();
+  Text getAppBarTitleText();
+  Text getCurrentQuestionText();
+  Text getLastAnswerText(bool showCorrect);
+  Text getSecondLastAnswerText(bool showCorrect);
+
+  Widget getButtons(){
+    List<Widget> buttons = [];
+    for(int i in [1,2,3,4,5,6,-1,0,-1]){
+      if (i == -1){
+        buttons.add(Container());
+        continue;
+      }
+      buttons.add(
+        TextButton(
+          onPressed: () {
+            practicePageState.checkAnswer(i);
+          },
+          style: TextButton.styleFrom(
+            backgroundColor: Colors.blue,
+            foregroundColor: Colors.white,
+            textStyle: TextStyle(fontSize: 30),
+          ),
+          child: Text(
+            i.toString(),
+          ),
+        ),
+      );
+    }
+    return GridView.count(
+        primary: false,
+        crossAxisCount: 3,
+        padding: EdgeInsets.fromLTRB(0, 20, 0, 20),
+        mainAxisSpacing: 10,
+        crossAxisSpacing: 10,
+        shrinkWrap: true,
+        children: buttons
+    );
+  }
+}

lib/pages/practice/thing/PracticeThingAll.dart

@@ -0,0 +1,122 @@
+import 'package:flutter/material.dart';
+import 'package:intl/intl.dart';
+import 'package:flutter/src/widgets/text.dart';
+import 'package:ohthatsa/pages/practice/PracticeAnswer.dart';
+import 'package:ohthatsa/pages/practice/PracticePage.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThing.dart';
+
+class PracticeThingAll extends PracticeThing {
+  late DateTime current;
+  final dateFormatter = DateFormat.yMMMMd();
+  final weekdayFormatter = DateFormat.EEEE();
+
+  final monthList = [
+    DateTime.january,
+    DateTime.february,
+    DateTime.march,
+    DateTime.may,
+    DateTime.june,
+    DateTime.july,
+    DateTime.august,
+    DateTime.september,
+    DateTime.october,
+    DateTime.november,
+    DateTime.december
+  ];
+
+  PracticeThingAll(PracticePageState practicePageState) : super(practicePageState) {
+    next();
+  }
+
+  @override
+  bool isCorrect(int answer){
+    return (current.weekday % 7) == answer;
+  }
+
+  @override
+  bool answer(int answer) {
+    bool isCorrect = this.isCorrect(answer);
+    answers.add(PracticeAnswer(current.millisecondsSinceEpoch, answer, isCorrect));
+    return isCorrect;
+  }
+
+  @override
+  void next() {
+    var year = 1700 + random.nextInt(500);
+    var month = monthList[random.nextInt(monthList.length)];
+    var dt1 = DateTime.utc(year, month, 0);
+    var dt2 = DateTime.utc( // Wrap to next year january if month is dec
+      year + (month == DateTime.december ? 1 : 0),
+      (month == DateTime.december ? 1 : month+1),
+      0
+    );
+    var daysInMonth = dt2.difference(dt1);
+    current = DateTime.utc(
+      year,
+      month,
+      random.nextInt(daysInMonth.inDays) + 1
+    );
+  }
+
+  List<bool> getBoolAnswers() {
+    return answers.map((answer) =>
+      answer.correct
+    ).toList();
+  }
+
+  Text getAppBarTitleText() {
+    return Text("Practicing Days");
+  }
+
+  Text getCurrentQuestionText(){
+    return Text(
+      dateFormatter.format(current),
+      style: TextStyle(
+          fontSize: 30
+      )
+    );
+  }
+
+  Text getLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 1){
+      final answer = answers[answers.length - 1];
+      final dt = DateTime.fromMillisecondsSinceEpoch(answer.question, isUtc: true);
+      final weekdayString = weekdayFormatter.format(dt);
+      final correctAnswer = dt.weekday % 7;
+      text = dateFormatter.format(dt) + (showCorrect ? ": $weekdayString ($correctAnswer)" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+        text,
+        style: TextStyle(
+            fontSize: 15,
+            color: color
+        )
+    );
+  }
+  Text getSecondLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 2){
+      final answer = answers[answers.length - 2];
+      final dt = DateTime.fromMillisecondsSinceEpoch(answer.question, isUtc: true);
+      final weekdayString = weekdayFormatter.format(dt);
+      final correctAnswer = dt.weekday % 7;
+      text = dateFormatter.format(dt) + (showCorrect ? ": $weekdayString ($correctAnswer)" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+        text,
+        style: TextStyle(
+            fontSize: 10,
+            color: color
+        )
+    );
+  }
+}

lib/pages/practice/thing/PracticeThingCentury.dart

@@ -0,0 +1,91 @@
+import 'dart:ui';
+
+import 'package:flutter/material.dart';
+import 'package:ohthatsa/pages/practice/PracticeAnswer.dart';
+import 'package:ohthatsa/pages/practice/PracticePage.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThing.dart';
+import 'package:ohthatsa/util/DayCalculator.dart';
+
+class PracticeThingCentury extends PracticeThing {
+  int current = 0;
+
+  PracticeThingCentury(PracticePageState practicePageState) : super(practicePageState) {
+    next();
+  }
+
+  @override
+  bool isCorrect(int answer){
+    final correctAnswer = DayCalculator.getCenturyValue(current);
+    return answer == correctAnswer;
+  }
+
+  @override
+  bool answer(int answer) {
+    bool isCorrect = this.isCorrect(answer);
+    answers.add(PracticeAnswer(current, answer, isCorrect));
+    return isCorrect;
+  }
+
+  @override
+  void next() {
+    current = 1700 + random.nextInt(500);
+  }
+
+  List<bool> getBoolAnswers(){
+    return answers.map((answer) =>
+      answer.correct
+    ).toList();
+  }
+
+  Text getAppBarTitleText(){
+    return Text("Practicing Centuries");
+  }
+
+  Text getCurrentQuestionText(){
+    return Text(
+        current.toString(),
+        style: TextStyle(
+            fontSize: 30
+        )
+    );
+  }
+
+  Text getLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 1){
+      final answer = answers[answers.length - 1];
+      final correctAnswer = DayCalculator.getCenturyValue(answer.question);
+      text = answer.question.toString() + (showCorrect ? ": $correctAnswer" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+      text,
+      style: TextStyle(
+          fontSize: 15,
+          color: color
+      )
+    );
+  }
+  Text getSecondLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 2){
+      final answer = answers[answers.length - 2];
+      final correctAnswer = DayCalculator.getCenturyValue(answer.question);
+      text = answer.question.toString() + (showCorrect ? ": $correctAnswer" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+      text,
+      style: TextStyle(
+          fontSize: 10,
+          color: color
+      )
+    );
+  }
+}

lib/pages/practice/thing/PracticeThingLeap.dart

@@ -0,0 +1,125 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/src/widgets/text.dart';
+import 'package:ohthatsa/pages/practice/PracticeAnswer.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThing.dart';
+import 'package:ohthatsa/pages/practice/PracticePage.dart';
+import 'package:ohthatsa/util/DayCalculator.dart';
+
+class PracticeThingLeap extends PracticeThing {
+  int current = 0;
+
+  PracticeThingLeap(PracticePageState practicePageState) : super(practicePageState) {
+    next();
+  }
+
+  @override
+  bool isCorrect(int answer){
+    final correctAnswer = DayCalculator.isLeapYear(current);
+    return (answer != 0) == correctAnswer;
+  }
+
+  @override
+  bool answer(int answer) {
+    final isCorrect = this.isCorrect(answer);
+    answers.add(PracticeAnswer(current, answer, isCorrect));
+    return isCorrect;
+  }
+
+  @override
+  void next() {
+    current = random.nextInt(10000);
+  }
+
+  List<bool> getBoolAnswers(){
+    return answers.map((answer) =>
+      answer.correct
+    ).toList();
+  }
+
+  Text getAppBarTitleText(){
+    return Text("Practicing Leap Years");
+  }
+
+  Text getCurrentQuestionText(){
+    return Text(
+        current.toString(),
+        style: TextStyle(
+            fontSize: 30
+        )
+    );
+  }
+
+  Text getLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 1){
+      final answer = answers[answers.length - 1];
+      final correctAnswer = DayCalculator.isLeapYear(answer.question);
+      text = answer.question.toString() + (showCorrect ? ": $correctAnswer" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+        text,
+        style: TextStyle(
+            fontSize: 15,
+            color: color
+        )
+    );
+  }
+  Text getSecondLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 2){
+      final answer = answers[answers.length - 2];
+      final correctAnswer = DayCalculator.isLeapYear(answer.question);
+      text = answer.question.toString() + (showCorrect ? ": $correctAnswer" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+        text,
+        style: TextStyle(
+            fontSize: 10,
+            color: color
+        )
+    );
+  }
+
+  Widget getButtons(){
+    return GridView.count(
+        primary: false,
+        crossAxisCount: 2,
+        padding: EdgeInsets.fromLTRB(0, 20, 0, 20),
+        mainAxisSpacing: 10,
+        crossAxisSpacing: 10,
+        shrinkWrap: true,
+        children: <Widget>[
+          TextButton(
+            onPressed: () {
+              practicePageState.checkAnswer(0);
+            },
+            style: TextButton.styleFrom(
+              backgroundColor: Colors.blue,
+              foregroundColor: Colors.white,
+              textStyle: TextStyle(fontSize: 30),
+            ),
+            child: Text("0"),
+          ),
+          TextButton(
+            onPressed: () {
+              practicePageState.checkAnswer(1);
+            },
+            style: TextButton.styleFrom(
+              backgroundColor: Colors.blue,
+              foregroundColor: Colors.white,
+              textStyle: TextStyle(fontSize: 30),
+            ),
+            child: Text("1"),
+          ),
+        ]
+    );
+  }
+}

lib/pages/practice/thing/PracticeThingMod.dart

@@ -0,0 +1,91 @@
+import 'package:flutter/material.dart';
+import 'package:ohthatsa/pages/practice/PracticeAnswer.dart';
+import 'package:ohthatsa/pages/practice/PracticePage.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThing.dart';
+import 'package:ohthatsa/pages/practice/PracticeType.dart';
+
+class PracticeThingMod extends PracticeThing {
+  int current = 0;
+
+  PracticeThingMod(PracticePageState practicePageState) : super(practicePageState) {
+    next();
+  }
+
+  @override
+  bool isCorrect(int answer){
+    final correctAnswer = current % 7;
+    return answer == correctAnswer;
+  }
+
+  @override
+  bool answer(int answer) {
+    final isCorrect = this.isCorrect(answer);
+    answers.add(PracticeAnswer(current, answer, isCorrect));
+    return isCorrect;
+  }
+
+  @override
+  void next() {
+    current = random.nextInt(141);
+  }
+
+  @override
+  Text getAppBarTitleText() {
+    return Text("Practicing Modulo");
+  }
+
+  @override
+  List<bool> getBoolAnswers() {
+    return answers.map((answer) =>
+      answer.correct
+    ).toList();
+  }
+
+  Text getCurrentQuestionText(){
+    return Text(
+        current.toString(),
+        style: TextStyle(
+            fontSize: 30
+        )
+    );
+  }
+
+  Text getLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 1){
+      final answer = answers[answers.length - 1];
+      final correctAnswer = answer.question % 7;
+      text = answer.question.toString() + (showCorrect ? ": $correctAnswer" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+        text,
+        style: TextStyle(
+            fontSize: 15,
+            color: color
+        )
+    );
+  }
+  Text getSecondLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 2){
+      final answer = answers[answers.length - 2];
+      final correctAnswer = answer.question % 7;
+      text = answer.question.toString() + (showCorrect ? ": $correctAnswer" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+        text,
+        style: TextStyle(
+            fontSize: 10,
+            color: color
+        )
+    );
+  }
+}

lib/pages/practice/thing/PracticeThingMonth.dart

@@ -0,0 +1,94 @@
+import 'dart:math';
+
+import 'package:flutter/material.dart';
+import 'package:ohthatsa/pages/practice/PracticePage.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThing.dart';
+import 'package:ohthatsa/pages/practice/PracticeType.dart';
+import 'package:ohthatsa/pages/practice/PracticeAnswer.dart';
+import 'package:ohthatsa/util/Months.dart';
+import 'package:ohthatsa/util/Extensions.dart';
+
+class PracticeThingMonth extends PracticeThing {
+
+  Month current = Month("Unkown", 0, 0);
+  
+  PracticeThingMonth(PracticePageState practicePageState) : super(practicePageState) {
+    next();
+  }
+
+  @override
+  bool isCorrect(int answer){
+    return current.value == answer;
+  }
+
+
+  @override
+  bool answer(int answer) {
+    final isCorrect = this.isCorrect(answer);
+    answers.add(PracticeAnswer(current.i, answer, isCorrect));
+    return isCorrect;
+  }
+
+  @override
+  void next() {
+    current = Months.getFromInt(random.nextInt(Months.length));
+  }
+
+  List<bool> getBoolAnswers(){
+    return answers.map(
+      (answer) => answer.correct
+    ).toList();
+  }
+
+  Text getAppBarTitleText(){
+    return Text("Practicing Months");
+  }
+
+  Text getCurrentQuestionText(){
+    return Text(
+      current.toString().capitalize(),
+      style: TextStyle(
+        fontSize: 30
+      )
+    );
+  }
+
+  Text getLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 1){
+      final answer = answers[answers.length - 1];
+      final month = Months.getFromInt(answer.question);
+      text = month.toString().capitalize() + (showCorrect ? ": ${month.value}" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+      text,
+      style: TextStyle(
+        fontSize: 15,
+        color: color
+      )
+    );
+  }
+  Text getSecondLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 2){
+      final answer = answers[answers.length - 2];
+      final month = Months.getFromInt(answer.question);
+      text = month.toString().capitalize() + (showCorrect ? ": ${month.value}" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+      text,
+      style: TextStyle(
+        fontSize: 10,
+        color: color
+      )
+    );
+  }
+}

lib/pages/practice/thing/PracticeThingYear.dart

@@ -0,0 +1,90 @@
+import 'package:flutter/material.dart';
+import 'package:ohthatsa/pages/practice/PracticeAnswer.dart';
+import 'package:ohthatsa/pages/practice/PracticePage.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThing.dart';
+import 'package:ohthatsa/util/DayCalculator.dart';
+
+class PracticeThingYear extends PracticeThing {
+  int current = 0;
+
+  PracticeThingYear(PracticePageState practicePageState) : super(practicePageState) {
+    next();
+  }
+
+  @override
+  bool isCorrect(int answer){
+    final correctAnswer = DayCalculator.getYearValue(current);
+    return answer == correctAnswer;
+  }
+
+  @override
+  bool answer(int answer){
+    final isCorrect = this.isCorrect(answer);
+    answers.add(PracticeAnswer(current, answer, isCorrect));
+    return isCorrect;
+  }
+
+  @override
+  void next() {
+    current = 1700 + random.nextInt(500);
+  }
+
+  List<bool> getBoolAnswers() {
+    return answers.map((answer) =>
+      answer.correct
+    ).toList();
+  }
+
+  Text getAppBarTitleText() {
+    return Text("Practicing Years");
+  }
+
+  Text getCurrentQuestionText(){
+    return Text(
+        current.toString(),
+        style: TextStyle(
+            fontSize: 30
+        )
+    );
+  }
+
+  Text getLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 1){
+      final answer = answers[answers.length - 1];
+      final correctAnswer = DayCalculator.getYearValue(answer.question);
+      text = answer.question.toString() + (showCorrect ? ": $correctAnswer" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+        text,
+        style: TextStyle(
+            fontSize: 15,
+            color: color
+        )
+    );
+  }
+
+  Text getSecondLastAnswerText(bool showCorrect){
+    String text = "-";
+    Color color = Colors.red;
+    if(answers.length >= 2){
+      final answer = answers[answers.length - 2];
+      final correctAnswer = DayCalculator.getYearValue(answer.question);
+      text = answer.question.toString() + (showCorrect ? ": $correctAnswer" : "");
+      if(answer.correct){
+        color = Colors.green;
+      }
+    }
+    return Text(
+        text,
+        style: TextStyle(
+            fontSize: 10,
+            color: color
+        )
+    );
+  }
+}

lib/util/DayCalculator.dart

@@ -0,0 +1,60 @@
+// Based on this article:
+// https://artofmemory.com/blog/how-to-calculate-the-day-of-the-week-4203.html
+
+import 'Months.dart';
+
+class DayCalculator {
+  // Calculates (YY + floor(YY / 4)) % 7
+  static int getYearValue(int year){
+    var yy = year % 100;
+    return (yy + (yy / 4).floor()) % 7;
+  }
+
+  static int getMonthValue(int month){
+    // Returns the month value for input 0-11
+    return Months.getFromInt(month).value;
+  }
+
+  static int getMonthValueByString(String month){
+    return Months.getFromString(month).value;
+  }
+
+  static int getCenturyValue(int year){
+    // Returns the century code for the year
+    // TODO: Implement Julian calendar?
+    year = (year / 100).floor() * 100;
+    switch(year){
+      case 1700:{
+        return 4;
+      }
+      case 1800:{
+        return 2;
+      }
+      case 1900:{
+        return 0;
+      }
+      case 2000:{
+        return 6;
+      }
+      case 2100:{
+        return 4;
+      }
+      case 2200:{
+        return 2;
+      }
+      default:{ //2300
+        return 0;
+      }
+    }
+  }
+
+  static bool isLeapYear(int year){
+    if (year % 4 != 0) {
+      return false;
+    }
+    if (year % 100 == 0 && year % 400 != 0){
+      return false;
+    }
+    return true;
+  }
+}

lib/util/Extensions.dart

@@ -0,0 +1,5 @@
+extension StringExtensions on String {
+  String capitalize() {
+    return this[0].toUpperCase() + this.substring(1);
+  }
+}

lib/util/Months.dart

@@ -0,0 +1,94 @@
+class Months {
+  static final Month january = Month("january", 0, 0);
+  static final Month february = Month("february", 1, 3);
+  static final Month march = Month("march", 2, 3);
+  static final Month april = Month("april", 3, 6);
+  static final Month may = Month("may", 4, 1);
+  static final Month june = Month("june", 5, 4);
+  static final Month july = Month("july", 6, 6);
+  static final Month august = Month("august", 7, 2);
+  static final Month september = Month("september", 8, 5);
+  static final Month october = Month("october", 9, 0);
+  static final Month november = Month("november", 10, 3);
+  static final Month december = Month("december", 11, 5);
+
+  static final int length = 12;
+
+  static final List<Month> list = List.unmodifiable([
+    january,
+    february,
+    march,
+    april,
+    may,
+    june,
+    july,
+    august,
+    september,
+    october,
+    november,
+    december
+  ]);
+
+  static List<String> stringList = List.unmodifiable(
+    list.map((month) => month.string)
+  );
+  static List<int> indexList = List.unmodifiable(
+    list.map((month) => month.i)
+  );
+  static List<int> valueList = List.unmodifiable(
+      list.map((month) => month.value)
+  );
+
+  static final Map<String, Month> stringMap = Map.unmodifiable({
+    january.string: january,
+    february.string: february,
+    march.string: march,
+    april.string: april,
+    may.string: may,
+    june.string: june,
+    july.string: july,
+    august.string: august,
+    september.string: september,
+    october.string: october,
+    november.string: november,
+    december.string: december
+  });
+  static final Map<int, Month> intMap = Map.unmodifiable(
+      stringMap.map((string, month) => MapEntry(month.i, month))
+  );
+
+  static Month getFromString(String month){
+    if (stringMap.containsKey(month.toLowerCase())) {
+      return stringMap[month.toLowerCase()]!;
+    } else {
+      return january;
+    }
+
+  }
+  static Month getFromInt(int month){
+    if (intMap.containsKey(month)) {
+      return intMap[month]!;
+    } else {
+      return january;
+    }
+  }
+}
+
+class Month {
+  final String string;
+  final int i;
+  final int value;
+  Month(this.string, this.i, this.value);
+
+  @override
+  String toString() {
+    return this.string;
+  }
+  @override
+  bool operator == (Object other){
+    return other is Month &&
+      this.string == other.string &&
+      this.i == other.i &&
+      this.value == other.value;
+  }
+}

lib/util/TextStyles.dart

@@ -0,0 +1,63 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+class TextStyles {
+  static const TextStyle textStyle15 = TextStyle(fontSize: 15);
+
+  static const TextStyle textStyle20 = TextStyle(fontSize: 20);
+  static const TextStyle textStyle20u = TextStyle(fontSize: 20, decoration: TextDecoration.underline);
+}
+
+class Text15 extends StatelessWidget {
+  final String text;
+
+  const Text15(this.text, {Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+        this.text,
+        style: TextStyles.textStyle15
+    );
+  }
+}
+
+
+class Text20 extends StatelessWidget {
+  final String text;
+  final TextDecoration decor;
+  final Color color;
+
+  Text20(
+      this.text, {
+        this.decor = TextDecoration.none,
+        this.color = Colors.black,
+        Key? key
+      }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      this.text,
+      style: TextStyle(
+        fontSize: 20,
+        color: color,
+        decoration: decor,
+      ),
+    );
+  }
+}
+
+class Text20u extends StatelessWidget {
+  final String text;
+
+  Text20u(this.text, {Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+        this.text,
+        style: TextStyles.textStyle20u
+    );
+  }
+}

linux/.gitignore

@@ -0,0 +1 @@
+flutter/ephemeral

linux/CMakeLists.txt

@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "ohthatsa")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "net.broodjeaap.ohthatsa.ohthatsa")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()

linux/flutter/CMakeLists.txt

@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)

linux/flutter/generated_plugin_registrant.cc

@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}

linux/flutter/generated_plugin_registrant.h

@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_

linux/flutter/generated_plugins.cmake

@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)

linux/runner/CMakeLists.txt

@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")

linux/runner/main.cc

@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}

linux/runner/my_application.cc

@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "ohthatsa");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "ohthatsa");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}

linux/runner/my_application.h

@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_

macos/.gitignore

@@ -0,0 +1,7 @@
+# Flutter-related
+**/Flutter/ephemeral/
+**/Pods/
+
+# Xcode-related
+**/dgph
+**/xcuserdata/

macos/Flutter/Flutter-Debug.xcconfig

@@ -0,0 +1 @@
+#include "ephemeral/Flutter-Generated.xcconfig"

macos/Flutter/Flutter-Release.xcconfig

@@ -0,0 +1 @@
+#include "ephemeral/Flutter-Generated.xcconfig"