package main

import (
	"image"
	"image/color"
	"io/ioutil"
	"log"
	"os"
	"path/filepath"
	"time"
)

const timeLayout = "2006-01-02_15-4-5.jpg"

// WatchArea defines one or more areas that should be monitored for motion
type WatchArea struct {
	Name  string          `json:"name"`
	Color color.RGBA      `json:"color"`
	Area  image.Rectangle `json:"area"`
}

// WatchAreaStoreDirExists returns filepath.Join(s.GetStreamStoreDirPath(), w.Name)
func (w WatchArea) WatchAreaStoreDirExists(s Stream) bool {
	return FileExists(w.GetWatchAreaStoreDir(s))
}

// GetWatchAreaStoreDir returns filepath.Join(s.GetStreamStoreDirPath(), w.Name)
func (w WatchArea) GetWatchAreaStoreDir(s Stream) string {
	return filepath.Join(s.GetStreamStoreDirPath(), w.Name)
}

// GetWatchAreaStoreDirInstantPath returns filepath.Join(s.GetWatchAreaStoreDir(), "")
func (w WatchArea) GetWatchAreaStoreDirInstantPath(s Stream) string {
	now := time.Now()
	return filepath.Join(w.GetWatchAreaStoreDir(s), now.Format(timeLayout))
}

// CopyInstant makes a copy of src to GetWatchAreaStoreDirInstantPath(s)
func (w WatchArea) CopyInstant(src string, s Stream) {
	if !FileExists(w.GetWatchAreaStoreDir(s)) {
		os.MkdirAll(w.GetWatchAreaStoreDir(s), os.ModePerm)
	}
	dest := w.GetWatchAreaStoreDirInstantPath(s)
	if !FileExists(src) {
		log.Fatal("Nothing to copy ", src)
		return
	}
	if FileExists(dest) {
		os.Remove(dest)
	}
	srcData, err := ioutil.ReadFile(src)
	if err != nil {
		log.Println(err)
	}
	err = ioutil.WriteFile(dest, srcData, 0644)
	if err != nil {
		log.Println(err)
	}
}