//------------------------------------------------------------
// Game Framework
// Copyright © 2013-2021 Jiang Yin. All rights reserved.
// Homepage: https://gameframework.cn/
// Feedback: mailto:ellan@gameframework.cn
//------------------------------------------------------------

using GameFramework.Resource;
using System;
using System.Collections.Generic;

namespace GameFramework.Localization
{
    /// <summary>
    /// 本地化管理器。
    /// </summary>
    internal sealed partial class LocalizationManager : GameFrameworkModule, ILocalizationManager
    {
        private readonly Dictionary<string, string> m_Dictionary;
        private readonly DataProvider<ILocalizationManager> m_DataProvider;
        private ILocalizationHelper m_LocalizationHelper;
        private Language m_Language;

        /// <summary>
        /// 初始化本地化管理器的新实例。
        /// </summary>
        public LocalizationManager()
        {
            m_Dictionary = new Dictionary<string, string>(StringComparer.Ordinal);
            m_DataProvider = new DataProvider<ILocalizationManager>(this);
            m_LocalizationHelper = null;
            m_Language = Language.Unspecified;
        }

        /// <summary>
        /// 获取或设置本地化语言。
        /// </summary>
        public Language Language
        {
            get
            {
                return m_Language;
            }
            set
            {
                if (value == Language.Unspecified)
                {
                    throw new GameFrameworkException("Language is invalid.");
                }

                m_Language = value;
            }
        }

        /// <summary>
        /// 获取系统语言。
        /// </summary>
        public Language SystemLanguage
        {
            get
            {
                if (m_LocalizationHelper == null)
                {
                    throw new GameFrameworkException("You must set localization helper first.");
                }

                return m_LocalizationHelper.SystemLanguage;
            }
        }

        /// <summary>
        /// 获取字典数量。
        /// </summary>
        public int DictionaryCount
        {
            get
            {
                return m_Dictionary.Count;
            }
        }

        /// <summary>
        /// 获取缓冲二进制流的大小。
        /// </summary>
        public int CachedBytesSize
        {
            get
            {
                return DataProvider<ILocalizationManager>.CachedBytesSize;
            }
        }

        /// <summary>
        /// 读取字典成功事件。
        /// </summary>
        public event EventHandler<ReadDataSuccessEventArgs> ReadDataSuccess
        {
            add
            {
                m_DataProvider.ReadDataSuccess += value;
            }
            remove
            {
                m_DataProvider.ReadDataSuccess -= value;
            }
        }

        /// <summary>
        /// 读取字典失败事件。
        /// </summary>
        public event EventHandler<ReadDataFailureEventArgs> ReadDataFailure
        {
            add
            {
                m_DataProvider.ReadDataFailure += value;
            }
            remove
            {
                m_DataProvider.ReadDataFailure -= value;
            }
        }

        /// <summary>
        /// 读取字典更新事件。
        /// </summary>
        public event EventHandler<ReadDataUpdateEventArgs> ReadDataUpdate
        {
            add
            {
                m_DataProvider.ReadDataUpdate += value;
            }
            remove
            {
                m_DataProvider.ReadDataUpdate -= value;
            }
        }

        /// <summary>
        /// 读取字典时加载依赖资源事件。
        /// </summary>
        public event EventHandler<ReadDataDependencyAssetEventArgs> ReadDataDependencyAsset
        {
            add
            {
                m_DataProvider.ReadDataDependencyAsset += value;
            }
            remove
            {
                m_DataProvider.ReadDataDependencyAsset -= value;
            }
        }

        /// <summary>
        /// 本地化管理器轮询。
        /// </summary>
        /// <param name="elapseSeconds">逻辑流逝时间，以秒为单位。</param>
        /// <param name="realElapseSeconds">真实流逝时间，以秒为单位。</param>
        internal override void Update(float elapseSeconds, float realElapseSeconds)
        {
        }

        /// <summary>
        /// 关闭并清理本地化管理器。
        /// </summary>
        internal override void Shutdown()
        {
        }

        /// <summary>
        /// 设置资源管理器。
        /// </summary>
        /// <param name="resourceManager">资源管理器。</param>
        public void SetResourceManager(IResourceManager resourceManager)
        {
            m_DataProvider.SetResourceManager(resourceManager);
        }

        /// <summary>
        /// 设置本地化数据提供者辅助器。
        /// </summary>
        /// <param name="dataProviderHelper">本地化数据提供者辅助器。</param>
        public void SetDataProviderHelper(IDataProviderHelper<ILocalizationManager> dataProviderHelper)
        {
            m_DataProvider.SetDataProviderHelper(dataProviderHelper);
        }

        /// <summary>
        /// 设置本地化辅助器。
        /// </summary>
        /// <param name="localizationHelper">本地化辅助器。</param>
        public void SetLocalizationHelper(ILocalizationHelper localizationHelper)
        {
            if (localizationHelper == null)
            {
                throw new GameFrameworkException("Localization helper is invalid.");
            }

            m_LocalizationHelper = localizationHelper;
        }

        /// <summary>
        /// 确保二进制流缓存分配足够大小的内存并缓存。
        /// </summary>
        /// <param name="ensureSize">要确保二进制流缓存分配内存的大小。</param>
        public void EnsureCachedBytesSize(int ensureSize)
        {
            DataProvider<ILocalizationManager>.EnsureCachedBytesSize(ensureSize);
        }

        /// <summary>
        /// 释放缓存的二进制流。
        /// </summary>
        public void FreeCachedBytes()
        {
            DataProvider<ILocalizationManager>.FreeCachedBytes();
        }

        /// <summary>
        /// 读取字典。
        /// </summary>
        /// <param name="dictionaryAssetName">字典资源名称。</param>
        public void ReadData(string dictionaryAssetName)
        {
            m_DataProvider.ReadData(dictionaryAssetName);
        }

        /// <summary>
        /// 读取字典。
        /// </summary>
        /// <param name="dictionaryAssetName">字典资源名称。</param>
        /// <param name="priority">加载字典资源的优先级。</param>
        public void ReadData(string dictionaryAssetName, int priority)
        {
            m_DataProvider.ReadData(dictionaryAssetName, priority);
        }

        /// <summary>
        /// 读取字典。
        /// </summary>
        /// <param name="dictionaryAssetName">字典资源名称。</param>
        /// <param name="userData">用户自定义数据。</param>
        public void ReadData(string dictionaryAssetName, object userData)
        {
            m_DataProvider.ReadData(dictionaryAssetName, userData);
        }

        /// <summary>
        /// 读取字典。
        /// </summary>
        /// <param name="dictionaryAssetName">字典资源名称。</param>
        /// <param name="priority">加载字典资源的优先级。</param>
        /// <param name="userData">用户自定义数据。</param>
        public void ReadData(string dictionaryAssetName, int priority, object userData)
        {
            m_DataProvider.ReadData(dictionaryAssetName, priority, userData);
        }

        /// <summary>
        /// 解析字典。
        /// </summary>
        /// <param name="dictionaryString">要解析的字典字符串。</param>
        /// <returns>是否解析字典成功。</returns>
        public bool ParseData(string dictionaryString)
        {
            return m_DataProvider.ParseData(dictionaryString);
        }

        /// <summary>
        /// 解析字典。
        /// </summary>
        /// <param name="dictionaryString">要解析的字典字符串。</param>
        /// <param name="userData">用户自定义数据。</param>
        /// <returns>是否解析字典成功。</returns>
        public bool ParseData(string dictionaryString, object userData)
        {
            return m_DataProvider.ParseData(dictionaryString, userData);
        }

        /// <summary>
        /// 解析字典。
        /// </summary>
        /// <param name="dictionaryBytes">要解析的字典二进制流。</param>
        /// <returns>是否解析字典成功。</returns>
        public bool ParseData(byte[] dictionaryBytes)
        {
            return m_DataProvider.ParseData(dictionaryBytes);
        }

        /// <summary>
        /// 解析字典。
        /// </summary>
        /// <param name="dictionaryBytes">要解析的字典二进制流。</param>
        /// <param name="userData">用户自定义数据。</param>
        /// <returns>是否解析字典成功。</returns>
        public bool ParseData(byte[] dictionaryBytes, object userData)
        {
            return m_DataProvider.ParseData(dictionaryBytes, userData);
        }

        /// <summary>
        /// 解析字典。
        /// </summary>
        /// <param name="dictionaryBytes">要解析的字典二进制流。</param>
        /// <param name="startIndex">字典二进制流的起始位置。</param>
        /// <param name="length">字典二进制流的长度。</param>
        /// <returns>是否解析字典成功。</returns>
        public bool ParseData(byte[] dictionaryBytes, int startIndex, int length)
        {
            return m_DataProvider.ParseData(dictionaryBytes, startIndex, length);
        }

        /// <summary>
        /// 解析字典。
        /// </summary>
        /// <param name="dictionaryBytes">要解析的字典二进制流。</param>
        /// <param name="startIndex">字典二进制流的起始位置。</param>
        /// <param name="length">字典二进制流的长度。</param>
        /// <param name="userData">用户自定义数据。</param>
        /// <returns>是否解析字典成功。</returns>
        public bool ParseData(byte[] dictionaryBytes, int startIndex, int length, object userData)
        {
            return m_DataProvider.ParseData(dictionaryBytes, startIndex, length, userData);
        }

        /// <summary>
        /// 根据字典主键获取字典内容字符串。
        /// </summary>
        /// <param name="key">字典主键。</param>
        /// <returns>要获取的字典内容字符串。</returns>
        public string GetString(string key)
        {
            string value = GetRawString(key);
            if (value == null)
            {
                return Utility.Text.Format("<NoKey>{0}", key);
            }

            return value;
        }

        /// <summary>
        /// 根据字典主键获取字典内容字符串。
        /// </summary>
        /// <param name="key">字典主键。</param>
        /// <param name="arg0">字典参数 0。</param>
        /// <returns>要获取的字典内容字符串。</returns>
        public string GetString(string key, object arg0)
        {
            string value = GetRawString(key);
            if (value == null)
            {
                return Utility.Text.Format("<NoKey>{0}", key);
            }

            try
            {
                return Utility.Text.Format(value, arg0);
            }
            catch (Exception exception)
            {
                return Utility.Text.Format("<Error>{0},{1},{2},{3}", key, value, arg0, exception.ToString());
            }
        }

        /// <summary>
        /// 根据字典主键获取字典内容字符串。
        /// </summary>
        /// <param name="key">字典主键。</param>
        /// <param name="arg0">字典参数 0。</param>
        /// <param name="arg1">字典参数 1。</param>
        /// <returns>要获取的字典内容字符串。</returns>
        public string GetString(string key, object arg0, object arg1)
        {
            string value = GetRawString(key);
            if (value == null)
            {
                return Utility.Text.Format("<NoKey>{0}", key);
            }

            try
            {
                return Utility.Text.Format(value, arg0, arg1);
            }
            catch (Exception exception)
            {
                return Utility.Text.Format("<Error>{0},{1},{2},{3},{4}", key, value, arg0, arg1, exception.ToString());
            }
        }

        /// <summary>
        /// 根据字典主键获取字典内容字符串。
        /// </summary>
        /// <param name="key">字典主键。</param>
        /// <param name="arg0">字典参数 0。</param>
        /// <param name="arg1">字典参数 1。</param>
        /// <param name="arg2">字典参数 2。</param>
        /// <returns>要获取的字典内容字符串。</returns>
        public string GetString(string key, object arg0, object arg1, object arg2)
        {
            string value = GetRawString(key);
            if (value == null)
            {
                return Utility.Text.Format("<NoKey>{0}", key);
            }

            try
            {
                return Utility.Text.Format(value, arg0, arg1, arg2);
            }
            catch (Exception exception)
            {
                return Utility.Text.Format("<Error>{0},{1},{2},{3},{4},{5}", key, value, arg0, arg1, arg2, exception.ToString());
            }
        }

        /// <summary>
        /// 根据字典主键获取字典内容字符串。
        /// </summary>
        /// <param name="key">字典主键。</param>
        /// <param name="args">字典参数。</param>
        /// <returns>要获取的字典内容字符串。</returns>
        public string GetString(string key, params object[] args)
        {
            string value = GetRawString(key);
            if (value == null)
            {
                return Utility.Text.Format("<NoKey>{0}", key);
            }

            try
            {
                return Utility.Text.Format(value, args);
            }
            catch (Exception exception)
            {
                string errorString = Utility.Text.Format("<Error>{0},{1}", key, value);
                if (args != null)
                {
                    foreach (object arg in args)
                    {
                        errorString += "," + arg.ToString();
                    }
                }

                errorString += "," + exception.ToString();
                return errorString;
            }
        }

        /// <summary>
        /// 是否存在字典。
        /// </summary>
        /// <param name="key">字典主键。</param>
        /// <returns>是否存在字典。</returns>
        public bool HasRawString(string key)
        {
            if (string.IsNullOrEmpty(key))
            {
                throw new GameFrameworkException("Key is invalid.");
            }

            return m_Dictionary.ContainsKey(key);
        }

        /// <summary>
        /// 根据字典主键获取字典值。
        /// </summary>
        /// <param name="key">字典主键。</param>
        /// <returns>字典值。</returns>
        public string GetRawString(string key)
        {
            if (string.IsNullOrEmpty(key))
            {
                throw new GameFrameworkException("Key is invalid.");
            }

            string value = null;
            if (!m_Dictionary.TryGetValue(key, out value))
            {
                return null;
            }

            return value;
        }

        /// <summary>
        /// 增加字典。
        /// </summary>
        /// <param name="key">字典主键。</param>
        /// <param name="value">字典内容。</param>
        /// <returns>是否增加字典成功。</returns>
        public bool AddRawString(string key, string value)
        {
            if (string.IsNullOrEmpty(key))
            {
                throw new GameFrameworkException("Key is invalid.");
            }

            if (m_Dictionary.ContainsKey(key))
            {
                return false;
            }

            m_Dictionary.Add(key, value ?? string.Empty);
            return true;
        }

        /// <summary>
        /// 移除字典。
        /// </summary>
        /// <param name="key">字典主键。</param>
        /// <returns>是否移除字典成功。</returns>
        public bool RemoveRawString(string key)
        {
            if (string.IsNullOrEmpty(key))
            {
                throw new GameFrameworkException("Key is invalid.");
            }

            return m_Dictionary.Remove(key);
        }

        /// <summary>
        /// 清空所有字典。
        /// </summary>
        public void RemoveAllRawStrings()
        {
            m_Dictionary.Clear();
        }
    }
}