using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using Gameplay;
using Sirenix.OdinInspector;
using UnityEngine;
using Newtonsoft.Json;
using TGS;
using UnityEngine.Serialization;
using Debug = UnityEngine.Debug;

[Serializable]
public class MapData
{
    public enum EnvironmentType
    {
        [LabelText("平原")]
        Plain = 0,

        [LabelText("山地")]
        Mountain,

        [LabelText("草原")]
        Grassland,

        [LabelText("林地")]
        Forest,

        [LabelText("雪地")]
        Snow,

        [LabelText("泥地")]
        MuddyLand,

        [LabelText("戈壁")]
        Gobi,

        [LabelText("沙漠")]
        Desert,

        [LabelText("高原")]
        Plateau
    }

    [Serializable]
    public class Region
    {
        [HideInInspector]
        public List<int> positions = new();

#if UNITY_EDITOR
        [Button("编辑")]
        [ShowIf("@!MapData.EditingRegion && MapData.currEditRegion != this")]
        private void Edit()
        {
            EditingRegion = true;
            currEditRegion = this;
        }

        [Button("退出编辑")]
        [ShowIf("@MapData.EditingRegion && MapData.currEditRegion == this")]
        private void ExitEdit()
        {
            EditingRegion = false;
            currEditRegion = null;
        }
#endif
    }

    private static readonly Color regionColor = MapUtils.GetRGBAColor("FF960072");
    private static Map currMap => MapSceneEditor._map;
    private static bool EditingBlockData;
    private static bool EditingRegion;
    private static Region currEditRegion;
    private static List<TerrainTypeProperty> _terrainTypeConfig;
    
    [ReadOnly]
    [LabelText("地图宽度")]
    public int width;

    [ReadOnly]
    [LabelText("地图高度")]
    public int height;

    [LabelText("环境类型")]
    public EnvironmentType environmentType;

    [BoxGroup("地块信息")]
    [HorizontalGroup("地块信息/地块")]
    [Button("刷地块")]
    [ShowIf("@!EditingBlockData")]
    private void EditBlock()
    {
        EditingBlockData = true;
    }

    [BoxGroup("地块信息")]
    [HorizontalGroup("地块信息/地块")]
    [Button("完成刷地块")]
    [ShowIf("EditingBlockData")]
    private void ExitEditBlock()
    {
        EditingBlockData = false;
    }
    
    // [HorizontalGroup("地块信息/Territory")]
    [ValueDropdown("GetTerrainTypeProperties")]
    [BoxGroup("地块信息")]
    [HorizontalGroup("地块信息/地块")]
    [LabelText("选择地块")]
    [ShowIf("EditingBlockData")]
    public int TerrainTypeIndex = 0;

    public List<MapBlockData> BlocksData = new();
    
    [PropertyOrder(100)]
    [LabelText("地区信息")]
    public List<Region> regions = new();

    [HideInInspector]
    public Vector2Int initialCameraPosition;

    public MapData()
    {
    }

    public MapData(int id, string name, int width, int height, EnvironmentType envType = EnvironmentType.Plain)
    {
        this.width = width;
        this.height = height;
        environmentType = envType;
        ResetBlocks();
    }

    public static void ResetEditor()
    {
        EditingBlockData = false;
        EditingRegion = false;
        currEditRegion = null;
    }
    
    [Conditional("UNITY_EDITOR")]
    public void SetActiveSceneEdit(bool isActive)
    {
        if(currMap == null)
            return;
        if (isActive)
            currMap.TerrainGridSystem.OnMouseClickOnGrid += OnCellClick;
        else
            currMap.TerrainGridSystem.OnMouseClickOnGrid -= OnCellClick;
    }

    private void OnCellClick(TerrainGridSystem tgs, int cellIndex, int buttonIndex)
    {
        if (!EditingBlockData && !EditingRegion)
        {
            return;
        }

        var map = currMap;

        int leftButton = 0;
        int rightButton = 1;

        if (buttonIndex == leftButton && TerrainTypeIndex >= 0 && EditingBlockData)
        {
            SetCellTerritory(tgs, cellIndex, TerrainTypeIndex);
        }
        else if (buttonIndex == rightButton && EditingBlockData)
        {
            ClearCellTerritory(tgs, cellIndex);
        }

        if (buttonIndex == leftButton && EditingRegion)
        {
            if (!currEditRegion.positions.Contains(cellIndex))
            {
                currEditRegion.positions.Add(cellIndex);
                map.TerrainGridSystem.CellToggleRegionSurface(cellIndex, true, regionColor);
            }
        }
        else if (buttonIndex == rightButton && EditingRegion)
        {
            ClearCellRegion(cellIndex);
        }
    }

    private void SetCellTerritory(TerrainGridSystem tgs, int cellIndex, int TerrainTypeIndex)
    {
        var map = currMap;
        // Key: TerrainTypeIndex  Value: tgs.territories.index
        if (!map.TerrainTypeIndexDic.ContainsKey(TerrainTypeIndex))
        {
            Territory territory = tgs.TerritoryCreate(cellIndex);
            map.TerrainTypeIndexDic.Add(TerrainTypeIndex, map.TerrainTypeIndexDic.Count);
            territory.fillColor = _terrainTypeConfig[TerrainTypeIndex].Color;
        }

        if (_terrainTypeConfig[TerrainTypeIndex].emptyBlock)
        {
            map.TerrainGridSystem.CellSetBorderVisible(cellIndex, false);
        }

        map?.SetTerrainType(cellIndex, TerrainTypeIndex);
        tgs.CellSetTerritory(cellIndex, map.TerrainTypeIndexDic[TerrainTypeIndex]);
        Debug.Log(
            $"Set Territory, cellIndex ({cellIndex}), terrain type ({TerrainTypeIndex}), name ({_terrainTypeConfig[TerrainTypeIndex].Color})");
    }

    private void ClearCellTerritory(TerrainGridSystem tgs, int cellIndex)
    {
        var map = currMap;
        map.TerrainGridSystem.CellSetBorderVisible(cellIndex, true);

        var tIndex = tgs.CellGetTerritoryIndex(cellIndex);
        if (tIndex != -1)
        {
            tgs.CellSetTerritory(cellIndex, -1);
            map?.SetTerrainType(cellIndex, -1);
            Debug.Log($"Cell Clear Territory, cellIndex({cellIndex})");
        }
    }
    
    private void ClearCellRegion(int cellIndex)
    {
        var map = currMap;
        if (currEditRegion.positions.Contains(cellIndex))
        {
            currEditRegion.positions.Remove(cellIndex);
            map.TerrainGridSystem.CellHideRegionSurface(cellIndex);
        }
    }
    
    public void ResetBlocks()
    {
        var count = width * height;
        BlocksData.Clear();
        for (var i = 0; i < count; i++)
        {
            BlocksData.Add(new MapBlockData());
        }
    }

    public void SetBlockData(Vector2Int position, MapBlockData blockData)
    {
        if (CheckPosition(position))
        {
            BlocksData[position.x * width + position.y] = blockData;
        }
    }

    public MapBlockData GetBlockData(Vector2Int position)
    {
        return CheckPosition(position) ? BlocksData[Position2BlockIndex(position)] : null;
    }

    public bool CheckPosition(Vector2Int position)
    {
        return position.x >= 0 && position.y >= 0;
    }

    public int Position2BlockIndex(Vector2Int position)
    {
        return position.x * width + position.y;
    }

    public Vector2Int BlockIndex2Position(int blockIndex)
    {
        return new Vector2Int(blockIndex / width, blockIndex % width);
    }

    public void SetBlockTerrainType(int blockIndex, int terrainTypeIndex)
    {
        if (blockIndex >= 0 && blockIndex < BlocksData.Count)
        {
            BlocksData[blockIndex].TerrainTypeIndex = terrainTypeIndex;
        }
    }

    // public void AddRegion(Region region)
    // {
    //     if (!CheckRegion(region))
    //     {
    //         DebugUtil.LogError("{0} AddPreparingArea failed, area:{1} is invalid!", GetType().Name, region);
    //         return;
    //     }
    //     _regions.Add(region);
    // }


    public Region GetRegion(int regionId)
    {
        if (regionId < 0 || regionId >= regions.Count)
            return null;
        return regions[regionId];
        // if (_regions.TryGetValue(regionId, out var region))
        // {
        //     return region;
        // }
        // else
        // {
        //     DebugUtil.LogError("{0} GetPreparingArea failed, id:{1} not exists!", GetType().Name, regionId);
        //     return null;
        // }
    }

    // public Dictionary<int, Region> GetAllRegions()
    // {
    //     return _regions;
    // }

    // public void RemoveRegion(int regionId)
    // {
    //     if (_regions.ContainsKey(regionId))
    //     {
    //         _regions.Remove(regionId);
    //     }
    //     else
    //     {
    //         DebugUtil.LogError("{0} RemovePreparingArea failed, id:{1} not exists!", GetType().Name, regionId);
    //     }
    // }

    public void RemoveAllRegion()
    {
        regions.Clear();
    }

    // private int GenerateRegionId()
    // {
    //     var max = _regions.Count;
    //     for (var i = 0; i < max; i++)
    //     {
    //         if (!_regions.ContainsKey(i))
    //         {
    //             return i;
    //         }
    //     }
    //     return max;
    // }

    // private bool CheckRegion(Region area)
    // {
    //     for (var i = 0; i < area.positions.Count; i++)
    //     {
    //         if (!CheckPosition(area.positions[i]))
    //         {
    //             return false;
    //         }
    //     }
    //
    //     return true;
    // }

    public bool IsRegionExist(int regionIndex)
    {
        return regionIndex >= 0 && regionIndex < regions.Count;
    }
    
    private static IEnumerable GetTerrainTypeProperties()
    {
        _terrainTypeConfig = TerrainTypeConfig.TerrainTypeProperties;
        var list = new ValueDropdownList<int>();
        if (_terrainTypeConfig != null)
        {
            for (int i = 0; i < _terrainTypeConfig.Count; i++)
            {
                list.Add(_terrainTypeConfig[i].name, i);
            }
        }

        return list;
    }
}