working year practice thing

lib/pages/practice/PracticePage.dart

@@ -9,6 +9,7 @@ import 'package:ohthatsa/pages/practice/thing/PracticeThingMod.dart';
 import 'package:ohthatsa/pages/practice/thing/PracticeThingMonth.dart';
 import 'package:ohthatsa/AppDrawer.dart';
 import 'package:ohthatsa/pages/practice/PracticeType.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThingYear.dart';
 import 'package:ohthatsa/util/Extensions.dart';
 import 'package:sqflite/sqflite.dart';
 
@@ -42,6 +43,10 @@ class _PracticeState extends State<PracticePage> {
         this.practiceThing = PracticeThingMonth();
         break;
       }
+      case (PracticeType.year): {
+        this.practiceThing = PracticeThingYear();
+        break;
+      }
       case (PracticeType.century): {
         this.practiceThing = PracticeThingCentury();
         break;

lib/pages/practice/PracticeSetupPage.dart

@@ -122,6 +122,7 @@ class _PracticeSetupState extends State<PracticeSetupPage> {
                           ]
                       ),
                       getStatTableRow(snapshot, PracticeType.month),
+                      getStatTableRow(snapshot, PracticeType.year),
                       getStatTableRow(snapshot, PracticeType.century),
                       getStatTableRow(snapshot, PracticeType.leap),
                       getStatTableRow(snapshot, PracticeType.mod),

lib/pages/practice/PracticeType.dart

@@ -1,5 +1,6 @@
 enum PracticeType {
   month,
+  year,
   century,
   leap,
   mod,

lib/pages/practice/thing/PracticeThingYear.dart

@@ -0,0 +1,89 @@
+import 'package:flutter/material.dart';
+import 'package:ohthatsa/pages/practice/PracticeAnswer.dart';
+import 'package:ohthatsa/pages/practice/thing/PracticeThing.dart';
+import 'package:ohthatsa/util/DayCalculator.dart';
+
+class PracticeThingYear extends PracticeThing {
+  int current;
+
+  PracticeThingYear() {
+    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
+        )
+    );
+  }
+}