using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Sirenix.OdinInspector;
using KairoEngine.Core;
using KairoEngine.Core.ConfigOptions;
using UniRx;

namespace KairoEngine.Core.ModuleSystem
{
    [CreateAssetMenu(fileName = "GameConfig", menuName = "KairoEngine/GameConfig"), HideMonoScript]
    public class GameConfig : ScriptableObject, ISerializationCallbackReceiver
    {
        [OnInspectorInit("GetApplicationName"), ReadOnly] public string applicationName;
        [OnInspectorInit("GetAppVersion"), ReadOnly] public string appVersion;

        [ListDrawerSettings(DraggableItems = true, HideRemoveButton = false, ShowPaging = false, ListElementLabelName = "@name", HideAddButton = true)]
        [ShowInInspector, NonSerialized, OnValueChanged("StartModule"), LabelText("Game Modules")]
        public List<GameModule> modules = new List<GameModule>();

        [OnInspectorInit("GetModuleNames"), OnValueChanged("AddNewModule")]
        [ValueDropdown("possibleModules", IsUniqueList = false)]
        [LabelText("Add New Module")]
        [NonSerialized, PropertySpace(0, 8)]
        public GameModule newModule;

        [InlineProperty, HideLabel] public ConfigOptionsManager configOptions = new ConfigOptionsManager();
        
        private void StartModule()
        {
            foreach (var module in modules)
            {
                if(module.isInitialized == false)
                {
                    module.isInitialized = true;
                    module.gameConfig = this;
                }
            }
        }

        private string GetApplicationName() => applicationName = Application.productName;
        private string GetAppVersion() => appVersion = Application.version;

        [NonSerialized] private IEnumerable possibleModules = new ValueDropdownList<GameModule>();

        private void GetModuleNames()
        {
            possibleModules = ReflectiveEnumerator.GetEnumerableOfType<GameModule>(this)
                .Where(x => x.typeName != "GameModule")
                .Where(x => x.typeName != "GameModuleBase")
                .Select(x => new ValueDropdownItem(x.name, x));
        }

        private void AddNewModule()
        {
            for (int i = 0; i < modules.Count; i++)
            {
                if(modules[i].name == newModule.name) 
                {
                    newModule = null;
                    return;
                }   
            }
            if(newModule != null)
            {
                modules.Add(newModule);
                newModule = null;
            }
        }

        [SerializeField, HideInInspector] private List<string> serializedModules = new List<string>();
        [SerializeField, HideInInspector] private ObjectSerializer serializer = new ObjectSerializer();

        public void OnBeforeSerialize()
        {
            if(modules == null) return;
            serializedModules = new List<string>();
            serializer.Clear();
            for (int i = 0; i < modules.Count; i++)
            {
                modules[i].OnBeforeSerialize(serializer);
                string data = JsonUtility.ToJson(modules[i]);
                serializedModules.Add(data);
            }
        }

        public void OnAfterDeserialize()
        {
            
            if(serializedModules == null) return;
            if(modules == null) modules = new List<GameModule>();
            if(modules.Count > 0) modules.Clear();
            for (int i = 0; i < serializedModules.Count; i++)
            {
                GameModule module= null;
                try
                {
                    module = JsonUtility.FromJson<GameModuleBase>(serializedModules[i]);
                }
                catch (System.Exception e)
                {
                    Debug.LogError($"Could not deserialize GameModule: \n{e}");
                }
                if(module == null) continue;
                module = GameModule.InvokeStringMethod(module.className, module.typeName, serializedModules[i]);
                if(module == null) continue;
                module.gameConfig = this;
                module.OnBeforeDeserialize(serializer);
                modules.Add(module);
            }
            serializer.Clear();
            serializedModules.Clear();
        }

    }
}