using GameFramework.Event;
using GameFramework.Resource;
using System.Collections.Generic;
using SepCore.Definition;
using SepCore.UI;
using SepCore.Utility;
using TMPro;
using UnityEngine;
using UnityGameFramework.Runtime;
using ProcedureOwner = GameFramework.Fsm.IFsm<GameFramework.Procedure.IProcedureManager>;

namespace SepCore.Procedure
{
    public class ProcedurePreload : ProcedureBase
    {
        private const string LubanTablesFlag = "LubanTables";

        private Dictionary<string, bool> _loadedFlag = new Dictionary<string, bool>();

        protected override void OnEnter(ProcedureOwner procedureOwner)
        {
            base.OnEnter(procedureOwner);

            GameEntry.Event.Subscribe(LoadConfigSuccessEventArgs.EventId, OnLoadConfigSuccess);
            GameEntry.Event.Subscribe(LoadConfigFailureEventArgs.EventId, OnLoadConfigFailure);
            GameEntry.Event.Subscribe(LoadDictionarySuccessEventArgs.EventId, OnLoadDictionarySuccess);
            GameEntry.Event.Subscribe(LoadDictionaryFailureEventArgs.EventId, OnLoadDictionaryFailure);

            _loadedFlag.Clear();

            PreloadResources();
        }

        protected override void OnLeave(ProcedureOwner procedureOwner, bool isShutdown)
        {
            GameEntry.Event.Unsubscribe(LoadConfigSuccessEventArgs.EventId, OnLoadConfigSuccess);
            GameEntry.Event.Unsubscribe(LoadConfigFailureEventArgs.EventId, OnLoadConfigFailure);
            GameEntry.Event.Unsubscribe(LoadDictionarySuccessEventArgs.EventId, OnLoadDictionarySuccess);
            GameEntry.Event.Unsubscribe(LoadDictionaryFailureEventArgs.EventId, OnLoadDictionaryFailure);

            base.OnLeave(procedureOwner, isShutdown);
        }

        protected override void OnUpdate(ProcedureOwner procedureOwner, float elapseSeconds, float realElapseSeconds)
        {
            base.OnUpdate(procedureOwner, elapseSeconds, realElapseSeconds);

            foreach (KeyValuePair<string, bool> loadedFlag in _loadedFlag)
            {
                if (!loadedFlag.Value)
                {
                    return;
                }
            }

            procedureOwner.SetData<VarInt32>("NextSceneId", (int)SceneType.Menu);
            ChangeState<ProcedureChangeScene>(procedureOwner);
        }

        private void PreloadResources()
        {
            // Preload configs
            LoadConfig("DefaultConfig");

            // Preload Luban data tables
            _loadedFlag.Add(LubanTablesFlag, false);
            GameEntry.Luban.LoadTables(
                () =>
                {
                    _loadedFlag[LubanTablesFlag] = true;

                    // Load save data; create a new game if no save exists
                    GameEntry.Save.Load();
                    if (!GameEntry.Save.HasSave && !GameEntry.Save.IsReady)
                    {
                        GameEntry.Save.CreateNewGame();
                    }

                    Log.Info("Load Luban data tables OK.");
                },
                errorMessage =>
                {
                    Log.Error("Load Luban data tables failure with error message '{0}'.", errorMessage);
                });

            // Preload dictionaries
            LoadDictionary("Default");

            // Preload fonts
            LoadFont("MainFont");
            LoadTMPFont("MainTMPFont");
        }

        private void LoadConfig(string configName)
        {
            string configAssetName = AssetUtility.GetConfigAsset(configName, false);
            _loadedFlag.Add(configAssetName, false);
            GameEntry.Config.ReadData(configAssetName, this);
        }

        private void LoadDictionary(string dictionaryName)
        {
            string dictionaryAssetName =
                AssetUtility.GetDictionaryAsset(GameEntry.Localization.Language.ToString(), dictionaryName, false);
            _loadedFlag.Add(dictionaryAssetName, false);
            GameEntry.Localization.ReadData(dictionaryAssetName, this);
        }

        private void LoadFont(string fontName)
        {
            _loadedFlag.Add(GameFramework.Utility.Text.Format("Font.{0}", fontName), false);
            GameEntry.Resource.LoadAsset(AssetUtility.GetFontAsset(fontName), Constant.AssetPriority.FontAsset,
                new LoadAssetCallbacks(
                    (assetName, asset, duration, userData) =>
                    {
                        _loadedFlag[GameFramework.Utility.Text.Format("Font.{0}", fontName)] = true;
                        UGuiForm.SetMainFont((Font)asset);
                        Log.Info("Load font '{0}' OK.", fontName);
                    },
                    (assetName, status, errorMessage, userData) =>
                    {
                        Log.Error("Can not load font '{0}' from '{1}' with error message '{2}'.", fontName, assetName,
                            errorMessage);
                    }));
        }

        private void LoadTMPFont(string fontName)
        {
            _loadedFlag.Add(GameFramework.Utility.Text.Format("Font.{0}", fontName), false);
            GameEntry.Resource.LoadAsset(AssetUtility.GetTMPFontAsset(fontName), Constant.AssetPriority.FontAsset,
                new LoadAssetCallbacks(
                    (assetName, asset, duration, userData) =>
                    {
                        _loadedFlag[GameFramework.Utility.Text.Format("Font.{0}", fontName)] = true;
                        UGuiForm.SetMainTMPFont((TMP_FontAsset)asset);
                        Log.Info("Load font '{0}' OK.", fontName);
                    },
                    (assetName, status, errorMessage, userData) =>
                    {
                        Log.Error("Can not load font '{0}' from '{1}' with error message '{2}'.", fontName, assetName,
                            errorMessage);
                    }));
        }

        private void OnLoadConfigSuccess(object sender, GameEventArgs e)
        {
            LoadConfigSuccessEventArgs ne = (LoadConfigSuccessEventArgs)e;
            if (ne.UserData != this)
            {
                return;
            }

            _loadedFlag[ne.ConfigAssetName] = true;
            Log.Info("Load config '{0}' OK.", ne.ConfigAssetName);
        }

        private void OnLoadConfigFailure(object sender, GameEventArgs e)
        {
            LoadConfigFailureEventArgs ne = (LoadConfigFailureEventArgs)e;
            if (ne.UserData != this)
            {
                return;
            }

            Log.Error("Can not load config '{0}' from '{1}' with error message '{2}'.", ne.ConfigAssetName,
                ne.ConfigAssetName, ne.ErrorMessage);
        }

        private void OnLoadDictionarySuccess(object sender, GameEventArgs e)
        {
            LoadDictionarySuccessEventArgs ne = (LoadDictionarySuccessEventArgs)e;
            if (ne.UserData != this)
            {
                return;
            }

            _loadedFlag[ne.DictionaryAssetName] = true;
            Log.Info("Load dictionary '{0}' OK.", ne.DictionaryAssetName);
        }

        private void OnLoadDictionaryFailure(object sender, GameEventArgs e)
        {
            LoadDictionaryFailureEventArgs ne = (LoadDictionaryFailureEventArgs)e;
            if (ne.UserData != this)
            {
                return;
            }

            Log.Error("Can not load dictionary '{0}' from '{1}' with error message '{2}'.", ne.DictionaryAssetName,
                ne.DictionaryAssetName, ne.ErrorMessage);
        }
    }
}