using System;
using MaterialSkin;
using MaterialSkin.Controls;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.IO.Compression;
using System.Windows.Forms;
using KaraokePlayer.Classes;
using System.Threading.Tasks;
using System.Configuration;

namespace KaraokePlayer
{
    public partial class MainForm : Form
    {
        private SongInfoForm songInfoForm = new SongInfoForm();
        private delegate void Action();
        private KaraokeVideoPlayer currentPlayer = null;
        private FirebaseController controller;
        private Song currentSong;
        public MainForm()
        {
            InitializeComponent();
            karaokeCDGPlayer.setup(true, true);
            karaokeMP4Player.setup(false, true);
            karaokeCDGPlayer.songEndedHandler += new KaraokePlayer.KaraokeVideoPlayer.SongEndedEventHandler(this.karaokePlayerSongEnded);
            karaokeMP4Player.songEndedHandler += new KaraokePlayer.KaraokeVideoPlayer.SongEndedEventHandler(this.karaokePlayerSongEnded);

            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.WindowState = FormWindowState.Maximized;
            this.ShowInTaskbar = true;
            karaokeCDGPlayer.Dock = DockStyle.Fill;
            karaokeMP4Player.Dock = DockStyle.Fill;

            controller = new FirebaseController(
                clientId: ConfigurationManager.AppSettings["KaraokePlayer.ControllerId"],
                stateChanged: (args) =>
                {
                    if (args.State == Enums.PlayerState.Play)
                    {
                        this.Invoke(new Action(() => { play(); }));
                    }
                    else if (args.State == Enums.PlayerState.Pause)
                    {
                        this.Invoke(new Action(() => { pause(); }));
                    }
                    else if (args.State == Enums.PlayerState.Next)
                    {
                        this.Invoke(new Action(() => { next(); }));
                    }
                    else
                    {
                        this.Invoke(new Action(() => { stop(); }));
                    }
                },
                songChanged: (args) =>
                {
                    this.Invoke(new Action(() => { stop(); }));
                    currentSong = args.Song;
                    this.Invoke(new Action(() => { previewSong(); }));
                },
                playQueueChanged: null
                );
        }

        private async void previewSong()
        {
            songInfoForm.Update(currentSong);
            songInfoForm.Show();
            await Task.Delay(TimeSpan.FromSeconds(5));
            //controller.Play();
            play();
            songInfoForm.Hide();
        }

        private void karaokePlayerSongEnded(object sender, EventArgs e)
        {
            next();
        }

        private void next()
        {
            controller.NextSong();
        }

        private void stop()
        {
            if (currentPlayer == null) return;
            currentPlayer.Stop();
        }
        private void pause()
        {
            if (currentPlayer == null) return;
            currentPlayer.Pause();
        }

        private void play()
        {
            if (currentSong == null) return;
            if (currentPlayer != null && currentPlayer.isPaused)
            {
                currentPlayer.Resume();
                return;
            }
            if (currentSong.FileType == Enums.FileType.CDG)
            {
                currentPlayer = karaokeCDGPlayer;
                karaokeCDGPlayer.Play(new Uri(Path.ChangeExtension(currentSong.Path, ".mp3")));
                karaokeCDGPlayer.Visible = true;
                karaokeMP4Player.Visible = false;
                karaokeMP4Player.Stop();
            }
            else if (currentSong.FileType == Enums.FileType.ZIP)
            {
                string playPath = null;
                string extractPath = Path.Combine(Directory.GetCurrentDirectory(), "temp");
                DeleteDirectory(extractPath);
                Directory.CreateDirectory(extractPath);
                using (ZipArchive archive = ZipFile.OpenRead(currentSong.Path))
                {
                    foreach (ZipArchiveEntry entry in archive.Entries)
                    {
                        if (entry.FullName.EndsWith(".mp3", StringComparison.OrdinalIgnoreCase))
                        {
                            playPath = Path.Combine(extractPath, entry.FullName);
                        }
                        entry.ExtractToFile(Path.Combine(extractPath, entry.FullName));
                    }
                }
                if (!string.IsNullOrEmpty(playPath))
                {
                    currentPlayer = karaokeCDGPlayer;
                    karaokeCDGPlayer.Play(new Uri(playPath));
                    karaokeCDGPlayer.Visible = true;
                    karaokeMP4Player.Visible = false;
                    karaokeMP4Player.Stop();
                }
            }
            else {
                currentPlayer = karaokeMP4Player;
                karaokeMP4Player.Play(new Uri(currentSong.Path));
                karaokeMP4Player.Visible = true;
                karaokeCDGPlayer.Visible = false;
                karaokeCDGPlayer.Stop();
            }
        }
    
        private void DeleteDirectory(string target_dir)
        {
            if (!Directory.Exists(target_dir)) { return; }
            string[] files = Directory.GetFiles(target_dir);
            string[] dirs = Directory.GetDirectories(target_dir);

            foreach (string file in files)
            {
                File.SetAttributes(file, FileAttributes.Normal);
                File.Delete(file);
            }

            foreach (string dir in dirs)
            {
                DeleteDirectory(dir);
            }

            Directory.Delete(target_dir, false);
        }
    }
}