using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using AYellowpaper.SerializedCollections;
using BITKit;
using UnityEngine;
using UnityEngine.Pool;
using UnityEngine.UIElements;
using YamlDotNet.Serialization;
using YamlDotNet.Serialization.NamingConventions;
#if  UNITY_EDITOR
    using UnityEditor;
#endif
namespace Net.BITKit.BitMask
{
    
    public class ScriptableBitMask : ScriptableObject,ISerializationCallbackReceiver
    {
        [SerializeField] public ScriptableImplements implements;

        internal readonly Dictionary<string, List<string>> Dictionary=new();
        [SerializeField] public string yaml;

        public Type Type => implements.Type;

        public Type[] Types => implements ? implements.Types : Array.Empty<Type>();

        private void OnEnable()
        {
            OnBeforeSerialize();
        }

        public void OnBeforeSerialize()
        {
            if(string.IsNullOrEmpty(yaml))return;
            var deserializer = new DeserializerBuilder()
                .WithNamingConvention(CamelCaseNamingConvention.Instance) // 驼峰命名
                .Build();
            Dictionary.Clear();
            var newDictionary = deserializer.Deserialize<Dictionary<string, List<string>>>(yaml);
            foreach (var pair in newDictionary)
            {
                Dictionary[pair.Key] = pair.Value;
            }
        }

        public void OnAfterDeserialize()
        {
            if(Dictionary.Count is 0)return;
            var serializer = new SerializerBuilder()
                .WithNamingConvention(CamelCaseNamingConvention.Instance)
                .Build();
            yaml = serializer.Serialize(Dictionary);
        }
        public IDictionary<Type,HashSet<Type>> FlagMask
        {
            get
            {
                var typeDictionary = implements.Types.ToDictionary(x => x.Name, x => x);

                var nextDictionary = new Dictionary<Type, HashSet<Type>>();

                foreach (var (key, d) in Dictionary)
                {
                    if (typeDictionary.TryGetValue(key, out var type) is false) continue;
                    var hashSet = new HashSet<Type>();
                    foreach (var x in d)
                    {
                        if(typeDictionary.TryGetValue(x,out var t1) is false)continue;
                        hashSet.Add(t1);
                    }
                    nextDictionary[type]=hashSet;
                }

                foreach (var type in Types)
                {
                    if (nextDictionary.TryAdd(type, new HashSet<Type>())) ;
                }
                
                return nextDictionary;
            }
        }

     
    }
#if  UNITY_EDITOR
    [CustomEditor(typeof(ScriptableBitMask),true)]
    public sealed class ScriptableBitMaskEditor:Editor
    {
        private const int CellSize = 24;
        public override VisualElement CreateInspectorGUI()
        {
            if (serializedObject.targetObject is not ScriptableBitMask scriptableBitMask)
                return base.CreateInspectorGUI();

            var inspector = new VisualElement
            {
                style =
                {
                    flexDirection = FlexDirection.Column
                }
            };

            var defaultPropertyFields = inspector.Create<VisualElement>();
            
            BITInspectorExtensions.FillDefaultInspector(defaultPropertyFields.Create<VisualElement>(),serializedObject,false);
            
            var root = inspector.Create<VisualElement>();
            
            root.style.flexDirection = new StyleEnum<FlexDirection>(FlexDirection.Row);
            

            var allFlags = scriptableBitMask.Types;

            var labelRow = root.Create<VisualElement>();
            var toggleRot = root.Create<VisualElement>();

            labelRow.style.alignSelf = new StyleEnum<Align>(Align.FlexEnd);

            for (var x = -1; x < allFlags.Length; x++)
            {
                if (x is -1)
                {
                    var container = toggleRot.Create<VisualElement>();
                    container.style.flexDirection = FlexDirection.Row;
                    foreach (var type in scriptableBitMask.Types.Reverse())
                    {
                        var text = container.Create<Label>();
                        text.style.width = CellSize;
                        text.text = string.Join("\n", type.Name.ToArray());
                    }
                    
                    continue;
                }
                {
                    var xEnum = allFlags[x];

                    var label = labelRow.Create<Label>();
                    
                    label.text = xEnum.Name;

                    label.style.height = CellSize;
                
                    label.style.unityTextAlign = TextAnchor.MiddleRight;
                
                    var toggles = toggleRot.Create<VisualElement>();
                    toggles.style.flexDirection = new StyleEnum<FlexDirection>(FlexDirection.Row);
                
                    for (var y = allFlags.Length-1; y >= 0+x; y--)
                    {
                        var yEnum = allFlags[y];
                        var toggle = toggles.Create<Toggle>();

                        toggle.tooltip = $"{xEnum.Name}/{yEnum.Name}";
                        
                        toggle.style.width = toggle.style.height = CellSize;
                        toggle.style.marginBottom 
                            = toggleRot.style.marginLeft 
                                = toggleRot.style.marginRight 
                                    = toggleRot.style.marginTop 
                                        = toggleRot.style.paddingBottom
                                            =toggleRot.style.paddingLeft
                                                =toggleRot.style.paddingRight
                                                    =toggleRot.style.paddingTop
                                        =-1;
                        
                        toggle.SetValueWithoutNotify(scriptableBitMask.Dictionary.GetOrCreate(xEnum.Name).Contains(yEnum.Name));
                        toggle.RegisterValueChangedCallback(changeEvent =>
                        {
                            if (changeEvent.newValue)
                            {
                                scriptableBitMask.Dictionary.GetOrCreate(xEnum.Name).TryAdd(yEnum.Name);
                                scriptableBitMask.Dictionary.GetOrCreate(yEnum.Name).TryAdd(xEnum.Name);
                            }
                            else
                            {
                                scriptableBitMask.Dictionary.GetOrCreate(xEnum.Name).TryRemove(yEnum.Name);
                                scriptableBitMask.Dictionary.GetOrCreate(yEnum.Name).TryRemove(xEnum.Name);
                            }
                            scriptableBitMask.OnAfterDeserialize();
                            EditorUtility.SetDirty(serializedObject.targetObject);
                        });
                    }
                }
            }
            return root;
        }
    }
#endif
}