using Axibug.Resources;
using System;
using System.Collections.Generic;
using System.Reflection;
using UnityEngine;

namespace Axibug.Runtime
{
    /// <summary>
    /// 基础组件。
    /// </summary>
    [DisallowMultipleComponent]
    [AddComponentMenu("Axibug/Base")]
    public class BaseComponent : GameComponent
    {
        private const int DefaultDpi = 96;  // default windows dpi

        [SerializeField]
        private bool m_EditorResourceMode = true;

        [SerializeField]
        private string m_TextHelperTypeName = "Axibug.Runtime.DefaultTextHelper";
        [SerializeField]
        private string m_LogHelperTypeName = "Axibug.Runtime.DefaultLogHelper";
        [SerializeField]
        private string m_VersionHelperTypeName = "Axibug.Runtime.DefaultVersionHelper";
        [SerializeField]
        private string m_JsonHelperTypeName = "Axibug.Runtime.DefaultJsonHelper";

        //热更程序集
        public Assembly m_Assembly;

        /// <summary>
        /// 获取或设置是否使用编辑器资源模式（仅编辑器内有效）。
        /// </summary>
        public bool EditorResourceMode
        {
            get
            {
                return m_EditorResourceMode;
            }
            set
            {
                m_EditorResourceMode = value;
            }
        }

        /// <summary>
        /// 游戏框架组件初始化。
        /// </summary>
        protected override void Awake()
        {
            base.Awake();

            m_Assembly = null;

            InitTextHelper();
            InitVersionHelper();
            InitLogHelper();
            InitJsonHelper();

            Utility.Converter.ScreenDpi = Screen.dpi;
            if (Utility.Converter.ScreenDpi <= 0)
            {
                Utility.Converter.ScreenDpi = DefaultDpi;
            }
        }

        private void Start()
        {
            //快速开发模式不用热更新和所有的资源管理
            if (!EditorResourceMode)
            {
                AssetBundleManager.Init();
                AssetManager.Init();
                PoolsManager.Init();
                PrefabManager.Init(gameObject);
            }
        }

        private void InitTextHelper()
        {
            if (string.IsNullOrEmpty(m_TextHelperTypeName))
            {
                return;
            }

            Type textHelperType = Utility.Assembly.GetType(m_TextHelperTypeName);
            if (textHelperType == null)
            {
                Log.Error("Can not find text helper type '{0}'.", m_TextHelperTypeName);
                return;
            }

            Utility.Text.ITextHelper textHelper = (Utility.Text.ITextHelper)Activator.CreateInstance(textHelperType);
            if (textHelper == null)
            {
                Log.Error("Can not create text helper instance '{0}'.", m_TextHelperTypeName);
                return;
            }

            Utility.Text.SetTextHelper(textHelper);
        }

        private void InitLogHelper()
        {
            if (string.IsNullOrEmpty(m_LogHelperTypeName))
            {
                return;
            }

            Type logHelperType = Utility.Assembly.GetType(m_LogHelperTypeName);
            if (logHelperType == null)
            {
                throw new GameException(Utility.Text.Format("Can not find log helper type '{0}'.", m_LogHelperTypeName));
            }

            AxibugLog.ILogHelper logHelper = (AxibugLog.ILogHelper)Activator.CreateInstance(logHelperType);
            if (logHelper == null)
            {
                throw new GameException(Utility.Text.Format("Can not create log helper instance '{0}'.", m_LogHelperTypeName));
            }

            AxibugLog.SetLogHelper(logHelper);
        }

        private void InitVersionHelper()
        {
            if (string.IsNullOrEmpty(m_VersionHelperTypeName))
            {
                return;
            }

            Type versionHelperType = Utility.Assembly.GetType(m_VersionHelperTypeName);
            if (versionHelperType == null)
            {
                throw new GameException(Utility.Text.Format("Can not find version helper type '{0}'.", m_VersionHelperTypeName));
            }

            Axibug.Version.IVersionHelper versionHelper = (Axibug.Version.IVersionHelper)Activator.CreateInstance(versionHelperType);
            if (versionHelper == null)
            {
                throw new GameException(Utility.Text.Format("Can not create version helper instance '{0}'.", m_VersionHelperTypeName));
            }

            Axibug.Version.SetVersionHelper(versionHelper);
        }

        private void InitJsonHelper()
        {
            if (string.IsNullOrEmpty(m_JsonHelperTypeName))
            {
                return;
            }

            Type jsonHelperType = Utility.Assembly.GetType(m_JsonHelperTypeName);
            if (jsonHelperType == null)
            {
                Log.Error("Can not find JSON helper type '{0}'.", m_JsonHelperTypeName);
                return;
            }

            Utility.Json.IJsonHelper jsonHelper = (Utility.Json.IJsonHelper)Activator.CreateInstance(jsonHelperType);
            if (jsonHelper == null)
            {
                Log.Error("Can not create JSON helper instance '{0}'.", m_JsonHelperTypeName);
                return;
            }

            Utility.Json.SetJsonHelper(jsonHelper);
        }

        private void Update()
        {
            FrameworkEntry.Update(Time.deltaTime, Time.unscaledDeltaTime);
            if (!EditorResourceMode)
                PrefabManager.Update();
        }

        private void OnDestroy()
        {
            FrameworkEntry.Shutdown();
        }

        internal void Shutdown()
        {
            Destroy(gameObject);
        }
    }
}