using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Events;

using System;
using System.Collections;
using System.Linq.Expressions;
using System.ComponentModel;
using System.Collections.Generic;

using Object = UnityEngine.Object;
using Random = UnityEngine.Random;
using Component = UnityEngine.Component;

public enum Folder
{
    UI,
    Atlas,
    Atlas2,
    Effect,
    Audio,
    Scene,
    Config,
    Discard,
}

public enum ObjType
{
    Null,

    Firework,
    LightwallUI,

    Player,

    Page,
    Flower,
    Garden,
    Tutorial,
    CloseItem,
    DressRoom,

    Canvas,
    GroupA,
    GroupB,
    GroupC,
    GroupD,
    GroupE,
    EventSystem,
    MainCamera,

    HudText,
    MailItem,
    InfoItem,
    SkillItem,
    SignItem,
    FlowerItem,
    AchieveItem,

    Music,

    Star,
    DropGold,
    DropDiamond,

    Bee,
    Beetle,
    Butterfly,
    Dragonfly,
}

public class AsyncRequest
{
    public UnityAction Callback;
    public AssetBundleRequest Request;
}

public class ManaReso : Regist
{
    #region 变量

    public static bool AsyncLoadLock;
    public static bool AsyncInstantiateLock;

    public static Coroutine CoroLoad;
    public static Coroutine CoroInstantiate;

    public static ManaReso Instance;

    public static List<UnityAction> AsyncList = new List<UnityAction>();
    public static List<AssetBundleRequest> RequestList = new List<AssetBundleRequest>();

    public static List<KV<AsyncRequest, UnityAction>> InstantiateList = new List<KV<AsyncRequest, UnityAction>>();


    public static Dictionary<string, Object> ObjDic = new Dictionary<string, Object>();
    public static Dictionary<string, Transform> TraDic = new Dictionary<string, Transform>();
    public static Dictionary<GameObject, ObjType> ObjPoolDic = new Dictionary<GameObject, ObjType>();

    public static Dictionary<ObjType, List<Transform>> ObjectPool = new Dictionary<ObjType, List<Transform>>();

    #endregion

    public override bool RegistImmed()
    {
        if (base.RegistImmed())
        {
            return true;
        }

        Instance = this;

        Transform objPool = new GameObject("ObjPool").transform;

        objPool.parent = transform;
        objPool.SetActive(false);

        TraDic.Add(objPool.name, objPool);

        CoroLoad = StartCoroutine(IAsyncLoad());
        CoroInstantiate = StartCoroutine(IAsyncInstancitate());

        return false;
    }


    #region TraDic

    public static T Get<T>(string goName, bool warn = true)
    {
        Transform tra;

        if (TraDic.TryGetValue(goName, out tra))
        {
            T t = tra.GetComponent<T>();

            if (t == null)
            {
                throw new Exception(goName);
            }

            return t;
        }
        else
        {
            if (warn)
            {
                throw new Exception(goName);
            }
            else
            {
                return default(T);
            }
        }
    }

    public static T[] Gets<T>(string goName, bool warn = true)
    {
        Transform tra;

        if (TraDic.TryGetValue(goName, out tra))
        {
            T[] t = tra.GetComponentsInChildren<T>();

            if (t == null)
            {
                throw new Exception(goName);
            }

            return t;
        }
        else
        {
            if (warn)
            {
                throw new Exception(goName);
            }
            else
            {
                return default(T[]);
            }
        }
    }

    public static Transform Get(string goName, bool warn = true)
    {
        Transform tra;

        if (TraDic.TryGetValue(goName, out tra))
        {
            return tra;
        }
        else
        {
            if (warn)
            {
                throw new Exception(goName);
            }
            else
            {
                return null;
            }
        }
    }

    #endregion

    #region ObjPool

    public static void Release()
    {
        Bundle.Discard.Unload(false);
    }


    public static void Save<T>(T t, bool warn = false) where T : Component
    {
        Save(t.gameObject);
    }

    public static void Save(GameObject go, bool warn = false)
    {
        ObjType objType;

        if (!ObjPoolDic.TryGetValue(go, out objType))
        {
            throw new Exception();
        }

        List<Transform> traList;

        if (ObjectPool.TryGetValue(objType, out traList))
        {
            if (traList.Contains(go.transform))
            {
                if (warn)
                {
                    return;
                }
                else
                {
                    throw new Exception();
                }
            }

            go.SetActive(false);

            traList.Add(go.transform);

            go.transform.SetParent(Get("ObjPool"));
        }
        else
        {
            throw new Exception();
        }
    }


    public static bool Contains<T>(T t) where T : Component
    {
        return Contains(t.gameObject);
    }

    public static bool Contains(GameObject go)
    {
        foreach (var kv in ObjectPool)
        {
            if (kv.Value.Contains(go.transform))
            {
                return true;
            }
        }

        return false;
    }

    public static Transform Get(ObjType objType)
    {
        List<Transform> traList;
        
        if (ObjectPool.TryGetValue(objType, out traList))
        {
            if (traList.Count > 0)
            {
                Transform tra = traList[0];

                tra.SetActive(true);

                traList.RemoveAt(0);

                return tra.transform;
            }
        }

        return null;
    }

    #endregion

    #region ShortCut

    public static Text SetText(string goName)
    {
        Text text = Get<Text>(goName);

        text.text = Language.GetStr("UI", goName);

        return text;
    }

    public static Text SetText(string goName, string str)
    {
        Text text = Get<Text>(goName);

        text.text = str;

        return text;
    }

    public static Image SetSprite(string goName, Sprite sprite)
    {
        Image image = Get<Image>(goName);

        image.sprite = sprite;

        return image;
    }

    public static Transform SetActive(string goName, bool active)
    {
        Transform tra = Get(goName);

        tra.SetActive(active);

        return tra;
    }

    public static Button SetButtonEvent(string goName, UnityAction onClick)
    {
        Button button = Get<Button>(goName);

        button.onClick = new Button.ButtonClickedEvent();

        button.onClick.AddListener(onClick);

        return button;
    }

    public static Button AddButtonEvent(string goName, UnityAction onClick)
    {
        Button button = Get<Button>(goName);

        button.onClick.AddListener(onClick);

        return button;
    }

    public static Button PushButtonEvent(string goName, UnityAction onClick)
    {
        Button button = Get<Button>(goName);

        Button.ButtonClickedEvent click = button.onClick;

        button.onClick = new Button.ButtonClickedEvent();

        button.onClick.AddListener(onClick);
        button.onClick.AddListener(click.Invoke);

        return button;
    }

    public static Button AddButtonEventOnetime(string goName, UnityAction onClick)
    {
        Button button = Get<Button>(goName);

        onClick += () =>
        {
            button.onClick.RemoveListener(onClick);
        };

        button.onClick.AddListener(onClick);

        return button;
    }

    public static Button PushButtonEventOnetime(string goName, UnityAction onClick)
    {
        Button button = Get<Button>(goName);

        onClick += () =>
        {
            button.onClick.RemoveListener(onClick);
        };

        Button.ButtonClickedEvent click = button.onClick;

        button.onClick = new Button.ButtonClickedEvent();

        button.onClick.AddListener(onClick);
        button.onClick.AddListener(click.Invoke);

        return button;
    }

    #endregion


    public static T Load<T>(string goName, Folder folder, ObjType objType = ObjType.Null) where T : Object
    {
        Object obj;
        
        if (ObjDic.TryGetValue(goName, out obj))
        {
            if (objType != ObjType.Null)
            {
                ObjectPool.UniqueAdd(objType, new List<Transform>());
            }
            
            return (T) obj;
        }
        else
        {
            T t = Bundle.Load<T>(goName, folder);
            
            if (t == null)
            {
                throw new Exception(goName);
            }

            ObjDic.Add(goName, t);

            if (objType != ObjType.Null)
            {
                ObjectPool.UniqueAdd(objType, new List<Transform>());
            }

            return t;
        }
    }

    public static Sprite LoadSprite(string goName, Folder folder)
    {
        return Load<Sprite>(goName, folder);
    }


    public static Transform Get(string goName, Folder folder, bool compile, Transform par, bool worldSpace, ObjType objType = ObjType.Null, Type type = null)
    {
        Transform tra = Get(objType);

        if (tra == null)
        {
            GameObject go = Load<GameObject>(goName, folder, objType);

            go = Instantiate(go, par, worldSpace);
            go.name = go.name.Replace("(Clone)", "");

            if (compile)
            {
                Auxiliary.CompileDic(go.transform, TraDic);
            }

            if (objType != ObjType.Null)
            {
                ObjPoolDic.Add(go, objType);
            }

            if (type != null)
            {
                go.AddComponent(type);
            }

            return go.transform;
        }
        else
        {
            if (compile)
            {
                Auxiliary.CompileDic(tra, TraDic);
            }

            GameObject prefab = Load<GameObject>(goName, folder, objType);

            tra.SetParent(par);

            if (worldSpace)
            {
                tra.position = prefab.transform.position;
            }
            else
            {
                tra.localPosition = prefab.transform.position;
            }

            if (type != null)
            {
                if (tra.GetComponent(type) == null)
                {
                    tra.AddComponent(type);
                }
            }

            return tra;
        }
    }

    public static Transform Get(string goName, Folder folder, bool compile, Transform par, Vector3 pos, ObjType objType = ObjType.Null, Type type = null)
    {
        Transform tra = Get(objType);

        if (tra == null)
        {
            GameObject go = Load<GameObject>(goName, folder, objType);
            
            go = Instantiate(go, pos, Quaternion.identity, par);
            go.name = go.name.Replace("(Clone)", "");

            if (compile)
            {
                Auxiliary.CompileDic(go.transform, TraDic);
            }

            if (objType != ObjType.Null)
            {
                ObjPoolDic.Add(go, objType);
            }

            if (type != null)
            {
                go.AddComponent(type);
            }

            return go.transform;
        }
        else
        {
            if (compile)
            {
                Auxiliary.CompileDic(tra, TraDic);
            }

            tra.SetParent(par);

            tra.position = pos;

            if (type != null)
            {
                if (tra.GetComponent(type) == null)
                {
                    tra.AddComponent(type);
                }
            }

            return tra;
        }
    }


    public static Star GetStar()
    {
        int slotIndex = Random.Range(0, 9);

        bool forceLeft = slotIndex == 3 || slotIndex == 8;
        bool forceRight = slotIndex == 0 || slotIndex == 4;

        slotIndex += Garden.CurPage*9;


        Slot slot = ManaGarden.SlotList[slotIndex];

        Vector3 pos = slot.transform.position;

        pos.z = -0.35f + Random.Range(-0.01f, 0.01f);

        Transform tra = Get("Star", Folder.Scene, false, null, pos, ObjType.Star);

        Star star = tra.GetComponent<Star>();

        tra.parent = slot.transform;

        if (star == null)
        {
            star = tra.AddComponent<Star>();

            star.Initialize(pos.y, forceLeft, forceRight);
        }
        else
        {
            star.Initialize(pos.y, forceLeft, forceRight);
        }

        return star;
    }

    public static Drop GetDrop(ObjType objType)
    {
        ManaAudio.PlayClip(Clip.DropClip);

        Vector3 leftPos = Get("MiniLeft").position;
        Vector3 rightPos;

        if (ManaMiniGame.GameA || ManaMiniGame.GameC)
        {
            rightPos = Get("MiniRight1").position;
        }
        else
        {
            rightPos = Get("MiniRight2").position;
        }

        Vector3 pos = Vector3.Lerp(leftPos, rightPos, Random.Range(0, 1f));

        Transform tra;

        if (objType == ObjType.DropGold)
        {
            tra = Get(objType.ToString(), Folder.Scene, false, null, pos, objType, typeof(DropGold));
        }
        else if(objType == ObjType.DropDiamond)
        {
            tra = Get(objType.ToString(), Folder.Scene, false, null, pos, objType, typeof(DropDiamond));
        }
        else
        {
            throw new Exception();
        }

        Drop drop = tra.GetComponent<Drop>();

        drop.RegistImmed();
        drop.ResetStatus();

        return drop;
    }


    public static Flower GetFlower(FlowerInfo flowerInfo, Slot slot, bool collider)
    {
        Transform tra = Get("Flower", Folder.Scene, false, slot.transform, false, ObjType.Flower, typeof(Flower));

        tra.localScale = new Vector3(1, 1, 1);

        Flower flower = tra.GetComponent<Flower>();

        flower.RegistImmed();

        flower.FlowerInfo = flowerInfo;
        flower.Slot = slot;

        //flower.FlowerIcon.SetActive(true);
        //flower.FlowerIcon.SetAlpha(1);

        flower.SetShadow();
        flower.SetCollider(collider);

        return flower;
    }

    public static Flower GetFlower(FlowerInfo flowerInfo, Transform par)
    {
        Transform tra = Get("Flower", Folder.Scene, false, par, false, ObjType.Flower, typeof(Flower));

        tra.localScale = new Vector3(1, 1, 1);

        Flower flower = tra.GetComponent<Flower>();

        flower.RegistImmed();

        flower.FlowerInfo = flowerInfo;

        //flower.FlowerIcon.SetActive(true);
        //flower.FlowerIcon.SetAlpha(1);

        flower.SetShadow();
        flower.SetCollider(false);

        return flower;
    }


    public static Text GetInfoItem()
    {
        Transform tra = Get("InfoItem", Folder.UI, false, Get("J_Info"), false, ObjType.InfoItem);

        tra.SetAsFirstSibling();

        Text text = tra.GetComponent<Text>();

        TweenRoot tween = text.CreateTweenGra(0, 1, 0.25f, true, true, Curve.EaseOutQuad);

        tween.OnBackwardFinish = () =>
        {
            Save(text);
        };

        return text;
    }

    public static HudText GetHudText(string str, Color color, int size, Transform posTra, Transform parTra, bool scene, float speed = 7.5f, float time = 0.5f, float stay = 0.5f)
    {
        Vector3 pos;

        if (scene)
        {
            pos = Camera.main.WorldToScreenPoint(posTra.position);
        }
        else
        {
            pos = posTra.position;
        }

        Transform tra = Get("HudText", Folder.UI, false, parTra, pos, ObjType.HudText, typeof(HudText));

        HudText hudText = tra.GetComponent<HudText>();

        hudText.Show(str, color, size, speed, time, stay);

        return hudText;
    }


    public static Transform GetElf(Flower flower, Vector4 offset, ElfType elfType)
    {
        Transform tra;

        Bounds bounds = flower.FlowerIcon.bounds;
        Vector3 pos = flower.FlowerIcon.transform.position + new Vector3(0, 0, -5f);
        Transform par = flower.transform;


        ObjType obj = elfType.ToString().Split('_')[0].ToEnum<ObjType>();

        pos.z -= Random.Range(0.001f, 0.1f);

        tra = Get(obj.ToString(), Folder.Scene, false, par, pos, obj);

        Elf elf = tra.GetChild(0).GetComponent<Elf>();

        if (elf == null)
        {
            elf = tra.GetChild(0).AddScript<Elf>();
        }

        tra.GetComponentInChildren<SpriteRenderer>().sprite = LoadSprite(elfType.ToString(), Folder.Atlas2);


        if (Random.Range(0f, 1f) <= 0.5f)
        {
            tra.SetEY(180);
        }
        else
        {
            tra.SetEY(0);
        }

        float offsetX = Mathf.Lerp(offset.x*bounds.extents.x, offset.y*bounds.extents.x, Random.Range(0f, 1f));
        float offsetY = Mathf.Lerp(offset.z, offset.w*bounds.extents.y, Random.Range(0f, 1f));

        tra.position += new Vector3(offsetX, offsetY, 0);


        elf.Flower = flower;
        elf.Animator.SetTrigger("Play");

        return tra;
    }

    public static Transform GetSkillItem(SkillRoot skillRoot)
    {
        Transform tra;

        if (skillRoot.SkillTab == SkillTab.Elf)
        {
            tra = Get("SkillItem", Folder.UI, false, Get("Fd_Grid"), false, ObjType.SkillItem);
        }
        else if (skillRoot.SkillTab == SkillTab.Store)
        {
            tra = Get("SkillItem", Folder.UI, false, Get("Fc_Grid"), false, ObjType.SkillItem);
        }
        else if (skillRoot.SkillTab == SkillTab.Magic)
        {
            tra = Get("SkillItem", Folder.UI, false, Get("Fb_Grid"), false, ObjType.SkillItem);
        }
        else if (skillRoot.SkillTab == SkillTab.Garden)
        {
            tra = Get("SkillItem", Folder.UI, false, Get("Fa_Grid"), false, ObjType.SkillItem);
        }
        else
        {
            throw new Exception();
        }

        skillRoot.SkillItem = tra;

        return tra;
    }

    public static Transform GetAchieveItem()
    {
        Transform tra = Get("AchieveItem", Folder.UI, false, ManaReso.Get("M_Grid"), false, ObjType.AchieveItem);

        return tra;
    }
    

    public static ParticleSystem GetFirework(Vector3 pos)
    {
        Transform tra = Get("Firework", Folder.Effect, false, null, pos, ObjType.Firework, typeof(Effect));

        ParticleSystem particle = tra.GetComponent<ParticleSystem>();

        particle.Play();

        return particle;
    }

    public static ParticleSystem GetLightwall()
    {
        Transform tra = Get("LightwallUI", Folder.Effect, false, Get("Canvas"), false, ObjType.LightwallUI, typeof(Effect));

        ParticleSystem particle = tra.GetComponent<ParticleSystem>();

        if(particle != null)
            particle.Play();

        return particle;
    }


    public static void AsyncLoad<T>(string goName, Folder folder, UnityAction callback = null)
    {
        KV<AsyncRequest, UnityAction> kv = new KV<AsyncRequest, UnityAction>();

        AssetBundleRequest bundleRequest = Bundle.LoadAsync<T>(goName, folder);
        
        AsyncRequest asyncRequest = new AsyncRequest();
        asyncRequest.Request = bundleRequest;
        asyncRequest.Callback = callback;

        kv.Key = asyncRequest;
        kv.Value = () =>
        {
            ObjDic.UniqueAdd(goName, bundleRequest.asset);
        };

        RequestList.Add(bundleRequest);

        InstantiateList.Add(kv);
    }

    public static void AsyncLoad(string goName, int amt, Folder folder, ObjType objType, bool ui = false, bool canvas = false, UnityAction callback = null)
    {
        KV<AsyncRequest, UnityAction> kv = new KV<AsyncRequest, UnityAction>();

        AssetBundleRequest bundleRequest = Bundle.LoadAsync<object>(goName, folder);
        
        AsyncRequest asyncRequest = new AsyncRequest();
        asyncRequest.Request = bundleRequest;
        asyncRequest.Callback = callback;

        kv.Key = asyncRequest;
        kv.Value = () =>
        {
            ObjDic.UniqueAdd(goName, bundleRequest.asset);

            if (objType != ObjType.Null)
            {
                ObjectPool.UniqueAdd(objType, new List<Transform>());
            }

            GameObject go;

            if (ui)
            {
                go = (GameObject)Instantiate(bundleRequest.asset, GameObject.Find("ManagerGame").transform.GetChild(0).GetChild(0));
            }
            else
            {
                go = (GameObject)Instantiate(bundleRequest.asset);
            }

            ObjPoolDic.Add(go, objType);

            go.name = go.name.Replace("(Clone)", "");

            Save(go);

            if (ui)
            {
                go.SetParent(GameObject.Find("ManagerGame").transform.GetChild(0).GetChild(0));
            }
        };


        RequestList.Add(bundleRequest);

        for (int i = 0; i < amt; i++)
        {
            InstantiateList.Add(kv);
        }
    }

    public static void AddAsyncLoad<T>(string goName, Folder folder, UnityAction callback = null)
    {
        AsyncList.Add
        (
            () =>
            {
                AsyncLoad<T>(goName, folder, callback);
            }
        );
    }

    public static void AddAsyncLoad(string goName, int amt, Folder folder, ObjType objType, bool ui = false, bool canvas = false, UnityAction callback = null)
    {
        AsyncList.Add
        (
            () =>
            {
                AsyncLoad(goName, amt, folder, objType, ui, canvas, callback);
            }
        );
    }


    public void StopAsync()
    {
        StopCoroutine(CoroLoad);
        StopCoroutine(CoroInstantiate);
    }

    public static IEnumerator IAsyncLoad()
    {
        while (true)
        {
            if (RequestList.Count > 0)
            {
                yield return null;
            }
            else
            {
                if (AsyncList.Valid() && !AsyncLoadLock)
                {
                    AsyncLoadLock = true;

                    Auxiliary.Instance.DelayCall
                    (
                        () =>
                        {
                            AsyncLoadLock = false;

                            AsyncList[0].SafeInvoke();

                            AsyncList.RemoveAt(0);
                        },
                        1
                    );

                    yield return null;
                }
                else
                {
                    yield return null;
                }
            }
        }
    }

    public static IEnumerator IAsyncInstancitate()
    {
        while (true)
        {
            if (AsyncInstantiateLock)
            {
                yield return null;
            }

            if (!InstantiateList.Valid())
            {
                yield return null;
            }
            else
            {
                if (Time.deltaTime > 0.333f)
                {
                    yield return null;
                }

                if (!InstantiateList[0].Key.Request.isDone)
                {
                    yield return null;
                }
                else
                {
                    InstantiateList[0].Key.Callback.SafeInvoke();

                    RequestList.Remove(InstantiateList[0].Key.Request);
                    
                    UnityAction action = InstantiateList[0].Value;

                    InstantiateList.RemoveAt(0);

                    AsyncInstantiateLock = true;

                    Auxiliary.Instance.DelayCall
                    (
                        () =>
                        {
                            if (!Logo.Complete)
                            {
                                action.SafeInvoke();

                                AsyncInstantiateLock = false;
                            }
                        },
                        1
                    );

                    yield return null;
                }
            }
        }
    }
}