using UnityEngine;
using System.Collections;
using System;
using System.Threading;
using System.Linq;
using System.IO;
using System.Collections.Generic;

public class HighscoresManager
{
    private static HighscoresManager current;
    public static HighscoresManager Current
    {
        get
        {
            if (current == null) current = new HighscoresManager();
            return current;
        }
        private set
        {
            current = value;
        }
    }
    private string filename;
    public List<HighscoreEntry> Entries;

    public HighscoresManager()
    {
        filename = Application.streamingAssetsPath + "/highscores.json";
        Entries = new List<HighscoreEntry>();
        LoadFile();
        //Init();
    }


    private void Init()
    {
        Entries.Clear();
        Entries.Add(new HighscoreEntry { rank = 1, pseudo = "Fausto", transport = 0, time = new TimeSpan(0, 0, 0, 50, 30) });
        Entries.Add(new HighscoreEntry { rank = 2, pseudo = "Raymond", transport = 1, time = new TimeSpan(0, 0, 0, 55, 30) });
        Entries.Add(new HighscoreEntry { rank = 3, pseudo = "Louison", transport = 2, time = new TimeSpan(0, 0, 0, 52, 30) });
        Entries.Add(new HighscoreEntry { rank = 4, pseudo = "Marco", transport = 2, time = new TimeSpan(0, 0, 0, 42, 30) });
        Entries.Add(new HighscoreEntry { rank = 5, pseudo = "Jeannie", transport = 3, time = new TimeSpan(0, 0, 0, 40, 30) });
        Entries.Add(new HighscoreEntry { rank = 6, pseudo = "Nathalie", transport = 6, time = new TimeSpan(0, 0, 0, 50, 0) });
        Entries.Add(new HighscoreEntry { rank = 7, pseudo = "Eddy", transport = 4, time = new TimeSpan(0, 0, 1, 30, 30) });
        Entries.Add(new HighscoreEntry { rank = 8, pseudo = "Bernard", transport = 5, time = new TimeSpan(0, 0, 1, 50, 10) });
        Entries.Add(new HighscoreEntry { rank = 9, pseudo = "Jacques", transport = 7, time = new TimeSpan(0, 0, 1, 55, 0) });
		Entries.Add(new HighscoreEntry { rank = 10, pseudo = "Laurent", transport = 0, time = new TimeSpan(0, 0, 1, 30, 0) });
		Entries.Add(new HighscoreEntry { rank = 11, pseudo = "Miguel", transport = 0, time = new TimeSpan(0, 0, 2, 00, 0) });
		Entries.Add(new HighscoreEntry { rank = 12, pseudo = "Harry", transport = 0, time = new TimeSpan(0, 0, 2, 10, 0) });
		Entries.Add(new HighscoreEntry { rank = 13, pseudo = "Donatello", transport = 0, time = new TimeSpan(0, 0, 2, 20, 0) });
		Entries.Add(new HighscoreEntry { rank = 14, pseudo = "Raphael", transport = 0, time = new TimeSpan(0, 0, 2, 25, 0) });
		Entries.Add(new HighscoreEntry { rank = 15, pseudo = "Conan", transport = 0, time = new TimeSpan(0, 0, 2, 35, 0) });
		Entries.Add(new HighscoreEntry { rank = 16, pseudo = "ObiWan", transport = 0, time = new TimeSpan(0, 0, 2, 40, 0) });
		Entries.Add(new HighscoreEntry { rank = 17, pseudo = "Bilbo", transport = 0, time = new TimeSpan(0, 0, 2, 50, 0) });
		Entries.Add(new HighscoreEntry { rank = 18, pseudo = "James", transport = 0, time = new TimeSpan(0, 0, 2, 55, 0) });
		Entries.Add(new HighscoreEntry { rank = 19, pseudo = "Indy", transport = 0, time = new TimeSpan(0, 0, 3, 00, 0) });
        WriteFile();
        LoadFile();
    }

    internal void AddNewEntry(HighscoreEntry entry)
    {
        if (entry == null || Entries == null) return;
        if (IsANewRecord(entry))
        {
            Entries.Add(entry);
            SortEntries();
            Entries.Remove(Entries.Last());
            WriteFile();
        }
    }

    internal bool IsANewRecord(HighscoreEntry highscore)
    {
		return !Entries.Contains(highscore) && Entries.Any(e => e.time > highscore.time && e!= highscore);
    }

    private void LoadFile()
    {
        HighscoreEntry[] entries;
        using (var sr = new StreamReader(filename))
            entries = JsonHelper.FromJson<HighscoreEntry>(sr.ReadToEnd());
        if (entries != null)
        {
            Entries.Clear();
            Entries.AddRange(entries);
            SortEntries();
        }
    }

    private void SortEntries()
    {
        Entries = Entries.OrderBy(e => e.time).ToList();
        Entries.ForEach(e => e.rank = Entries.IndexOf(e) + 1);
    }

    private void WriteFile()
    {
        var entries = JsonHelper.ToJson(Entries.ToArray());
        using (var sr = new StreamWriter(filename))
            sr.WriteLine(entries);
    }
}

[Serializable]
public class HighscoreEntry
{
    [NonSerialized]
    public int rank;
    public string pseudo;
    public int transport;
    public TimeSpan time
    {
        get
        {
            if (string.IsNullOrEmpty(timeStr)) return default(TimeSpan);
            var values = timeStr.Split(':');
            return new TimeSpan(0, 0, Convert.ToInt32(values[0]),
                Convert.ToInt32(values[1]),
                Convert.ToInt32(values[2]));
        }
        set
        {
            timeStr = time != null ?
                value.Minutes + ":" + value.Seconds + ":" + value.Milliseconds : string.Empty;
        }
    }
    public string timeStr;

}