using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;

public class LeaderboardController : MonoBehaviour
{
    private const string DAILY_ID = "DAILY_LB";
    private const string GLOBAL_ID = "GLOBAL_LB";

    public static LeaderboardController Instance;

    [SerializeField] private PlayerInfo _dailyPlayerInfo;
    [SerializeField] private PlayerInfo _globalPlayerInfo;

    public UnityEvent<List<Player>> OnDailyInit;
    public UnityEvent<List<Player>> OnGlobalInit;

    public UnityEvent<int> OnDailyNewRecord;
    public UnityEvent<int> OnGlobalNewRecord;


    private void Start()
    {
        //yield return new WaitForSeconds(1);
        InitDailyLeaderboard();
        InitGlobalLeaderboard();
    }

    private void InitDailyLeaderboard()
    {
        StartCoroutine(InitDailyLeaderboard_Coroutine());
    }

    private void InitGlobalLeaderboard()
    {
        StartCoroutine(InitGlobalLeaderboard_Coroutine());
    }

    private IEnumerator InitDailyLeaderboard_Coroutine()
    {
        string lastSave = PlayerPrefs.GetString(DAILY_ID, string.Empty);
        DateTime lastSaveDate;

        if (DateTime.TryParse(lastSave, out lastSaveDate) && DateTime.Now.Day <= lastSaveDate.Day)
        {
            yield return SaveLoadController.Instance.Load(ref _dailyPlayerInfo, DAILY_ID);
        }
        else
        {
            yield return SaveLoadController.Instance.Save(_dailyPlayerInfo, DAILY_ID);
        }

        PlayerPrefs.SetString(DAILY_ID, DateTime.Now.ToString("dd/MM/yyyy HH:mm:ss"));
        Debug.Log("End daily lb init");

        RefreshDailyEntries();

        yield return null;
    }


    private IEnumerator InitGlobalLeaderboard_Coroutine()
    {
        if (PlayerPrefs.GetInt(GLOBAL_ID, 0) == 1)
        {
            yield return SaveLoadController.Instance.Load(ref _globalPlayerInfo, GLOBAL_ID);
        }
        else
        {
            yield return SaveLoadController.Instance.Save(_globalPlayerInfo, GLOBAL_ID);
        }

        PlayerPrefs.SetInt(GLOBAL_ID, 1);
        Debug.Log("End global lb init");

        RefreshGlobalEntries();

        yield return null;
    }

    private void RefreshDailyEntries()
    {
        _dailyPlayerInfo.Players = _dailyPlayerInfo.Players.OrderByDescending(x => x.Score).ToList();
        OnDailyInit?.Invoke(_dailyPlayerInfo.Players);
    }

    private void RefreshGlobalEntries()
    {
        _globalPlayerInfo.Players = _globalPlayerInfo.Players.OrderByDescending(x => x.Score).ToList();
        OnGlobalInit?.Invoke(_globalPlayerInfo.Players);
    }

    public void SavePlayerRecord(Player player)
    {
        CheckDailyLeaderboard(player);
        CheckGlobalLeaderboard(player);
    }

    private void CheckDailyLeaderboard(Player player)
    {
        if (player.Score >= _dailyPlayerInfo.Players.Last().Score)
        {
            _dailyPlayerInfo.Players[_dailyPlayerInfo.Players.IndexOf(_dailyPlayerInfo.Players.Last())] = player;
            RefreshDailyEntries();

            OnDailyNewRecord?.Invoke(_dailyPlayerInfo.Players.IndexOf(player));
        }
    }

    private void CheckGlobalLeaderboard(Player player)
    {
        if (player.Score >= _globalPlayerInfo.Players.Last().Score)
        {
            _globalPlayerInfo.Players[_globalPlayerInfo.Players.IndexOf(_globalPlayerInfo.Players.Last())] = player;
            RefreshGlobalEntries();

            OnGlobalNewRecord?.Invoke(_globalPlayerInfo.Players.IndexOf(player));
        }
    }
}