using BigFloatNumerics;
using System;
using System.Collections.Generic;
using UnityEngine;

using static BattleMgr;

public class AtlantisDungeon : GameMod
{
    [SerializeField] Transform playerSpawnPos;

    [SerializeField] AtlantisDungeonView view;

    BattleMgr battleMgr => BattleMgr.Instance;
    float modElapsedTime;

    IVCharacter player;
    Dictionary<uint, IMonoObjectPool<Character>> normalEnemyPoolMap;
    Dictionary<uint, IMonoObjectPool<Character>> epicEnemyPoolMap;

    int currentWave;
    float prevWaveTime;
    float elapsedTimeSincePrevWave => Time.time - prevWaveTime;

    public new AtlantisDungeonData Data => base.Data as AtlantisDungeonData;
    public float CurrentScore { get; private set; }
    public float ModRemainingTime => Mathf.Max(Data.LimitTime - modElapsedTime, 0f);
    
    protected override void OnInitialize()
    {
        normalEnemyPoolMap = new Dictionary<uint, IMonoObjectPool<Character>>();
        epicEnemyPoolMap = new Dictionary<uint, IMonoObjectPool<Character>>();
    }

    protected override void OnStartMod()
    {
        SoundMgr.Instance.PlayBgm(Data.BGMPath);
        BattleMgr.Instance.SetBackGround(Data.BackGroundPath);

        //Set enemy pool
        foreach (var enemy in Data.NormalEnemyCandidates)
        {
            var pool = new DynamicMonoObjectPool<Character>();
            pool.Initialize(
                () => InstantiateEnemy(pool, enemy, Data.GetCurNormalEnemyHp, Data.GetCurNormalEnemyAtk, Data.NormalEnemyScore), 
                DestroyEnemy,
                (obj) => obj.gameObject.SetActive(false),
                (obj) => obj.gameObject.SetActive(true));
            normalEnemyPoolMap.Add(enemy.id, pool);
        }

        foreach (var enemy in Data.EpicEnemyCandidates)
        {
            var pool = new DynamicMonoObjectPool<Character>();
            pool.Initialize(
                () => InstantiateEnemy(pool, enemy, Data.GetCurEpicEnemyHp, Data.GetCurEpicEnemyAtk, Data.EpicEnemyScore), 
                DestroyEnemy,
                (obj) => obj.gameObject.SetActive(false),
                (obj) => obj.gameObject.SetActive(true));
            epicEnemyPoolMap.Add(enemy.id, pool);
        }

        //Summon player
        player = battleMgr.GetPlayer();

        var buffMgr = BuffMgr.Instance;
        player.ResetDebuff();
        player.SetStatus(
            buffMgr.GetCharAtk(),
            buffMgr.GetCharHp(),
            buffMgr.GetCharCrtDam(),
            buffMgr.GetCharCrtRate(),
            buffMgr.GetCharMov(),
            buffMgr.GetCharSpd(),
            GameProperty.Instance.PlayerCharacterAttackRange);
        player.transform.position = playerSpawnPos.position;

        player.Summon();

        MateMgr.Instance.EndAllSettedMateSkillCool();
        MateMgr.Instance.SetAcitveMateToFirst();
        MateMgr.Instance.ActiveMate?.Spawn(player, player.LookDirection);

        battleMgr.SetPetsSummonState(true);
        battleMgr.SetGudiansSummonState(true);

        battleMgr.ShowTalkBox(TalkType.Summon);

        currentWave = 0;
        prevWaveTime = Time.time - Data.WaveIntervalTime;
        modElapsedTime = 0f;
        CurrentScore = 0f;

        IVCameraController.SMoveCamera(player.transform.position);

        //Set UI
        GameUIMgr.OnOffStageInfo(false);

        view?.SetDungeon(this);
        view?.Show();
    }

    private Character InstantiateEnemy(DynamicMonoObjectPool<Character> targetPool, CharacterProperty prop, Func<BigFloat> getHpFunc, Func<BigFloat> getAtkFunc, float score)
    {
        var enemyData = new CharacterData(prop);

        if (enemyData.TryGetStat(StatID.Hp, out var hpStat))
            hpStat.DefaultValue = getHpFunc();
        if (enemyData.TryGetStat(StatID.Attack, out var atkStat))
            atkStat.DefaultValue = getAtkFunc();

        var enemy = Instantiate(enemyData.Prefab);

        enemy.SetData(enemyData);
        enemy.AddTags(EntityTag.Enemy);
        enemy.SetTargetTags(LayerMask.GetMask(GameProperty.Instance.CharacterLayerName), EntityTag.Player);

        enemy.OnDamaged += (obj, damage) =>
        {
            if (obj.CurrentHp <= 0)
            {
                CurrentScore += score;
            }
        };
        enemy.OnDisposed += (obj) =>
        {
            BattleMgr.Instance.UnregistBattleEntities(obj);
            targetPool.Return(obj);
        };

        return enemy;
    }

    private void DestroyEnemy(Character enemy)
    {
        BattleMgr.Instance.UnregistBattleEntities(enemy);
        CoroutineHandler.Instance.DelayCall(1f ,() => Destroy(enemy.gameObject));
    }

    protected override void OnUpdate()
    {
        if(BattleMgr.Instance.BattlePause) return;

        modElapsedTime += Time.deltaTime;

        if (modElapsedTime >= Data.LimitTime)
        {
            battleMgr.ShowTalkBox(TalkType.Die);
            FireOnDone(Result.Timeout);
        }
        else
        {
            if (player.IsDead)
            {
                battleMgr.ShowTalkBox(TalkType.Die);
                FireOnDone(Result.Dead);
            }
            else if(CurrentScore >= Data.GoalScore)
            {
                battleMgr.ShowTalkBox(TalkType.Attack);

                Data.TryGetReward(Data.Level, (totalReward, result) =>
                {
                    if (!result) return;
                    GameUIMgr.SOpenPopupGoods(totalReward);
                    GameUIMgr.RefreshAtlantisDungeonTicket();
                }, Data.GetRewardMultiplier());

                Data.SetLevel(Data.Level + 1);
                Data.EnterTicketCount--;
                Data.ClearCount++;

                FireOnDone(Result.Success);
            }
            else if(currentWave < Data.WaveCount && elapsedTimeSincePrevWave >= Data.WaveIntervalTime)
            {
                prevWaveTime = Time.time;
                currentWave++;
                SpawnWave();
            }
        }
    }

    private void SpawnWave()
    {
        var areaSize = BattleMgr.Instance.GetBgSize();
        var rndPositions = TargetFinder.GetRandom(areaSize.bounds, Data.NormalEnemyCountPerWave + Data.EpicEnemyCountPerWave);

        for(int i = 0; i < Data.NormalEnemyCountPerWave; i++)
        {
            if(normalEnemyPoolMap.TryGetRandomValue(out var pool))
            {
                var enemy = pool.Get();
                enemy.Spawn(rndPositions[i]);
                enemy.ChangeLookDirection(player.transform);
                BattleMgr.Instance.RegistBattleEntities(enemy);
            }
        }

        for (int i = 0; i < Data.EpicEnemyCountPerWave; i++)
        {
            if(epicEnemyPoolMap.TryGetRandomValue(out var pool))
            {
                var enemy = pool.Get();
                enemy.Spawn(rndPositions[i + Data.NormalEnemyCountPerWave]);
                enemy.ChangeLookDirection(player.transform);
                BattleMgr.Instance.RegistBattleEntities(enemy);
            }
        }
    }

    protected override void OnEndMod()
    {
        view?.Hide();

        GameUIMgr.OnOffStageInfo(true);

        foreach (var pool in epicEnemyPoolMap.Values)
        {
            pool.Dispose();
        }   
        epicEnemyPoolMap.Clear();

        foreach (var pool in normalEnemyPoolMap.Values)
        {
            pool.Dispose();
        }
        normalEnemyPoolMap.Clear();

        if (Data.AutoProgress && Data.EnterTicketCount <= 0)
        {
            GameUIMgr.SOpenToast(LocalizationText.GetText("notice_stop_autoprogress_0"));
            Data.AutoProgress = false;
        }

        Data.TryCount++;
    }

    public void QuitDungeon()
    {
        battleMgr.ShowTalkBox(TalkType.Die);
        FireOnDone(Result.Quit);
    }
}