using System;
using System.Collections;
using System.Collections.Generic;
using Ichni.RhythmGame;
using TMPro;
using UnityEngine;
using UnityEngine.Events;

namespace Ichni.Editor
{
    public class DynamicUIInputField : DynamicUIElement, IHaveAutoUpdate
    {
        public TMP_InputField inputField;
        public bool isAutoUpdate { get; set; }
        public bool isReceiving { get; set; }
        private UnityAction<string> customAction;

        public override void Initialize(IBaseElement baseElement, string title, string parameterName)
        {
            // 精确重置可交互状态，防止从对象池取回到被禁用的废弃输入框
            if (inputField != null) inputField.interactable = true;

            // [对象池安全]
            inputField.onEndEdit.RemoveListener(OnEndEditNode);
            inputField.onSelect.RemoveListener(OnSelectNode);
            inputField.onDeselect.RemoveListener(OnDeselectNode);
            customAction = null;

            base.Initialize(baseElement, title, parameterName);

            if (parameterName != string.Empty)
            {
                ApplyContent();
                inputField.onEndEdit.AddListener(OnEndEditNode);
            }
        }
        
        private void OnEndEditNode(string str)
        {
            ApplyParameters(str);
            customAction?.Invoke(str);
        }
        private void OnSelectNode(string str) { isReceiving = false; }
        private void OnDeselectNode(string str) { isReceiving = true; }

        private void Update()
        {
            (this as IHaveAutoUpdate).UpdateContent();
        }

        public void SetDefaultValue(string text)
        {
            inputField.text = text;
        }

        public T GetValue<T>()
        {
            return (T)Convert.ChangeType(inputField.text, typeof(T));
        }

        public void SetAutoUpdate(bool enable)
        {
            isAutoUpdate = enable;
            isReceiving = true;

            inputField.onSelect.RemoveListener(OnSelectNode);
            inputField.onSelect.AddListener(OnSelectNode);
            
            inputField.onDeselect.RemoveListener(OnDeselectNode);
            inputField.onDeselect.AddListener(OnDeselectNode);
        }

        public void ApplyContent()
        {
            object value = ReflectionHelper.GetDeepValue(connectedBaseElement, parameterName);
            inputField.text = value != null ? value.ToString() : string.Empty;
        }

        private void ApplyParameters(string text)
        {
            Type type = null;
            // 优先获取字段/属性类型
            var baseType = connectedBaseElement.GetType();
            var field = baseType.GetField(parameterName);
            if (field != null)
                type = field.FieldType;
            else
            {
                var prop = baseType.GetProperty(parameterName);
                if (prop != null)
                    type = prop.PropertyType;
            }
            // 如果都没有，fallback 到当前值类型
            if (type == null)
            {
                var val = ReflectionHelper.GetDeepValue(connectedBaseElement, parameterName);
                type = val != null ? val.GetType() : typeof(string);
            }
            object value = null;
            if (type == typeof(int))
            {
                value = int.Parse(text);
            }
            else if (type == typeof(float))
            {
                value = float.Parse(text);
            }
            else if (type == typeof(string))
            {
                value = text;
            }
            if (value != null)
            {
                Ichni.Editor.Commands.CommandManager.ExecuteCommand(new Ichni.Editor.Commands.ChangeValueCommand(connectedBaseElement, parameterName, value));
            }
            connectedBaseElement.Refresh();
        }

        public override DynamicUIElement AddListenerFunction(UnityAction action)
        {
            customAction += _ => action();
            return this;
        }
    }
}