using FireSharp.Config;
using FireSharp.Interfaces;
using FireSharp.Response;
using Herse.Models;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO.Compression;

namespace SongCrawler
{
    class Program
    {
        static void Main(string[] args)
        {
            string controller = args[0];
            string songpath = args[1];
            IFirebaseConfig config = new FirebaseConfig
            {
                AuthSecret = "9BQHUEJhScgK2FP10hvlToxTlGQpXT94Cvx01piO",
                BasePath = "https://herse.firebaseio.com/"
            };
            FireSharp.FirebaseClient client = new FireSharp.FirebaseClient(config);
            string firepath = string.Format("controllers/{0}/songs", controller);

            List<string> files = new List<string>();
            files.AddRange(Directory.GetFiles(songpath, "*.mp3", SearchOption.AllDirectories));
            files.AddRange(Directory.GetFiles(songpath, "*.zip", SearchOption.AllDirectories));
            List<Song> songs = new List<Song>();
            string id3path = null;
            Song song; 
            foreach (string filepath in files)
            {
                Console.WriteLine(filepath);
                var ext = Path.GetExtension(filepath).ToLower();
                switch (ext)
                {
                    case ".mp3":
                        id3path = filepath;
                        break;
                    case ".zip":
                        id3path = UnzipMp3(filepath);
                        break;
                }
                song = ReadId3(id3path);
                CheckTitle(song);
                song.Path = filepath;
                songs.Add(song);
            }
            SetResponse response = client.Set(firepath, songs);
        }

        private static void CheckTitle(Song song)
        {
            if(string.IsNullOrEmpty(song.Title))
            {
                string file = Path.GetFileNameWithoutExtension(song.Path);
                string[] parts = file.Split('-');
                if (parts.Length == 1)
                {
                    song.Title = parts[0].Trim();
                }
                else if (parts.Length > 1)
                {
                    song.Artist = parts[parts.Length - 2].Trim();
                    song.Title = parts[parts.Length - 1].Trim();
                }
            }
        }

        private static string UnzipMp3(string filepath)
        {
            string file = Path.GetFileNameWithoutExtension(filepath);
            try
            { 
                ZipFile.ExtractToDirectory(filepath, "c:\\temp");
            }
            catch
            {
                // do nothing fancy
            }
            return "c:\\temp\\" + file + ".mp3";
        }

        static Song ReadId3(string path)
        {
            TagLib.File tagFile = TagLib.File.Create(path);
            return new Song()
            {
                Title = tagFile.Tag.Title,
                Artist = tagFile.Tag.FirstPerformer,
                Path = path,
                Genre = tagFile.Tag.FirstGenre,
                Year = (int)tagFile.Tag.Year
            };
        }
    }
}