//------------------------------------------------------------
// Game Framework
// Copyright © 2013-2019 Jiang Yin. All rights reserved.
// Homepage: http://gameframework.cn/
// Feedback: mailto:jiangyin@gameframework.cn
//------------------------------------------------------------

using GameFramework;
using GameFramework.Localization;
using System;
using System.IO;
using System.Text;
using UnityEngine;

namespace UnityGameFramework.Runtime
{
 /// <summary>
 /// 默认本地化辅助器。
 /// </summary>
 public class DefaultLocalizationHelper : LocalizationHelperBase
 {
 private static readonly string[] RowSplitSeparator = new string[] { "\r\n", "\r", "\n" };
 private static readonly string[] ColumnSplitSeparator = new string[] { "\t" };
 private const int ColumnCount = 4;

 private ResourceComponent m_ResourceComponent = null;
 private ILocalizationManager m_LocalizationManager = null;

 /// <summary>
 /// 获取系统语言。
 /// </summary>
 public override Language SystemLanguage
 {
 get
 {
 switch (Application.systemLanguage)
 {
 case UnityEngine.SystemLanguage.Afrikaans: return Language.Afrikaans;
 case UnityEngine.SystemLanguage.Arabic: return Language.Arabic;
 case UnityEngine.SystemLanguage.Basque: return Language.Basque;
 case UnityEngine.SystemLanguage.Belarusian: return Language.Belarusian;
 case UnityEngine.SystemLanguage.Bulgarian: return Language.Bulgarian;
 case UnityEngine.SystemLanguage.Catalan: return Language.Catalan;
 case UnityEngine.SystemLanguage.Chinese: return Language.ChineseSimplified;
 case UnityEngine.SystemLanguage.ChineseSimplified: return Language.ChineseSimplified;
 case UnityEngine.SystemLanguage.ChineseTraditional: return Language.ChineseTraditional;
 case UnityEngine.SystemLanguage.Czech: return Language.Czech;
 case UnityEngine.SystemLanguage.Danish: return Language.Danish;
 case UnityEngine.SystemLanguage.Dutch: return Language.Dutch;
 case UnityEngine.SystemLanguage.English: return Language.English;
 case UnityEngine.SystemLanguage.Estonian: return Language.Estonian;
 case UnityEngine.SystemLanguage.Faroese: return Language.Faroese;
 case UnityEngine.SystemLanguage.Finnish: return Language.Finnish;
 case UnityEngine.SystemLanguage.French: return Language.French;
 case UnityEngine.SystemLanguage.German: return Language.German;
 case UnityEngine.SystemLanguage.Greek: return Language.Greek;
 case UnityEngine.SystemLanguage.Hebrew: return Language.Hebrew;
 case UnityEngine.SystemLanguage.Hungarian: return Language.Hungarian;
 case UnityEngine.SystemLanguage.Icelandic: return Language.Icelandic;
 case UnityEngine.SystemLanguage.Indonesian: return Language.Indonesian;
 case UnityEngine.SystemLanguage.Italian: return Language.Italian;
 case UnityEngine.SystemLanguage.Japanese: return Language.Japanese;
 case UnityEngine.SystemLanguage.Korean: return Language.Korean;
 case UnityEngine.SystemLanguage.Latvian: return Language.Latvian;
 case UnityEngine.SystemLanguage.Lithuanian: return Language.Lithuanian;
 case UnityEngine.SystemLanguage.Norwegian: return Language.Norwegian;
 case UnityEngine.SystemLanguage.Polish: return Language.Polish;
 case UnityEngine.SystemLanguage.Portuguese: return Language.PortuguesePortugal;
 case UnityEngine.SystemLanguage.Romanian: return Language.Romanian;
 case UnityEngine.SystemLanguage.Russian: return Language.Russian;
 case UnityEngine.SystemLanguage.SerboCroatian: return Language.SerboCroatian;
 case UnityEngine.SystemLanguage.Slovak: return Language.Slovak;
 case UnityEngine.SystemLanguage.Slovenian: return Language.Slovenian;
 case UnityEngine.SystemLanguage.Spanish: return Language.Spanish;
 case UnityEngine.SystemLanguage.Swedish: return Language.Swedish;
 case UnityEngine.SystemLanguage.Thai: return Language.Thai;
 case UnityEngine.SystemLanguage.Turkish: return Language.Turkish;
 case UnityEngine.SystemLanguage.Ukrainian: return Language.Ukrainian;
 case UnityEngine.SystemLanguage.Unknown: return Language.Unspecified;
 case UnityEngine.SystemLanguage.Vietnamese: return Language.Vietnamese;
 default: return Language.Unspecified;
 }
 }
 }

 /// <summary>
 /// 解析字典。
 /// </summary>
 /// <param name="text">要解析的字典文本。</param>
 /// <param name="userData">用户自定义数据。</param>
 /// <returns>是否解析字典成功。</returns>
 public override bool ParseDictionary(string text, object userData)
 {
 try
 {
 string[] rowTexts = text.Split(RowSplitSeparator, StringSplitOptions.None);
 for (int i = 0; i < rowTexts.Length; i++)
 {
 if (rowTexts[i].Length <= 0 || rowTexts[i][0] == '#')
 {
 continue;
 }

 string[] splitLine = rowTexts[i].Split(ColumnSplitSeparator, StringSplitOptions.None);
 if (splitLine.Length != ColumnCount)
 {
 Log.Warning("Can not parse dictionary '{0}'.", text);
 return false;
 }

 string dictionaryName = splitLine[1];
 string dictionaryValue = splitLine[3];
 if (!AddRawString(dictionaryName, dictionaryValue))
 {
 Log.Warning("Can not add raw string with key '{0}' which may be invalid or duplicate.", dictionaryName);
 return false;
 }
 }

 return true;
 }
 catch (Exception exception)
 {
 Log.Warning("Can not parse dictionary '{0}' with exception '{1}'.", text, Utility.Text.Format("{0}\n{1}", exception.Message, exception.StackTrace));
 return false;
 }
 }

 /// <summary>
 /// 解析字典。
 /// </summary>
 /// <param name="bytes">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 override bool ParseDictionary(byte[] bytes, object userData)
 {
 using (MemoryStream memoryStream = new MemoryStream(bytes, false))
 {
 return ParseDictionary(memoryStream, userData);
 }
 }

 /// <summary>
 /// 解析字典。
 /// </summary>
 /// <param name="stream">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 override bool ParseDictionary(Stream stream, object userData)
 {
 try
 {
 using (BinaryReader binaryReader = new BinaryReader(stream, Encoding.UTF8))
 {
 while (binaryReader.BaseStream.Position < binaryReader.BaseStream.Length)
 {
 string dictionaryName = binaryReader.ReadString();
 string dictionaryValue = binaryReader.ReadString();
 if (!AddRawString(dictionaryName, dictionaryValue))
 {
 Log.Warning("Can not add raw string with config name '{0}' which may be invalid or duplicate.", dictionaryName);
 return false;
 }
 }
 }

 return true;
 }
 catch (Exception exception)
 {
 Log.Warning("Can not parse config with exception '{0}'.", Utility.Text.Format("{0}\n{1}", exception.Message, exception.StackTrace));
 return false;
 }
 }

 /// <summary>
 /// 释放字典资源。
 /// </summary>
 /// <param name="dictionaryAsset">要释放的字典资源。</param>
 public override void ReleaseDictionaryAsset(object dictionaryAsset)
 {
 m_ResourceComponent.UnloadAsset(dictionaryAsset);
 }

 /// <summary>
 /// 加载字典。
 /// </summary>
 /// <param name="dictionaryName">字典名称。</param>
 /// <param name="dictionaryAsset">字典资源。</param>
 /// <param name="loadType">字典加载方式。</param>
 /// <param name="userData">用户自定义数据。</param>
 /// <returns>是否加载成功。</returns>
 protected override bool LoadDictionary(string dictionaryName, object dictionaryAsset, LoadType loadType, object userData)
 {
 TextAsset textAsset = dictionaryAsset as TextAsset;
 if (textAsset == null)
 {
 Log.Warning("Dictionary asset '{0}' is invalid.", dictionaryName);
 return false;
 }

 bool retVal = false;
 switch (loadType)
 {
 case LoadType.Text:
 retVal = m_LocalizationManager.ParseDictionary(textAsset.text, userData);
 break;
 case LoadType.Bytes:
 retVal = m_LocalizationManager.ParseDictionary(textAsset.bytes, userData);
 break;
 case LoadType.Stream:
 using (MemoryStream stream = new MemoryStream(textAsset.bytes, false))
 {
 retVal = m_LocalizationManager.ParseDictionary(stream, userData);
 }
 break;
 default:
 Log.Warning("Unknown load type.");
 return false;
 }

 if (!retVal)
 {
 Log.Warning("Dictionary asset '{0}' parse failure.", dictionaryName);
 }

 return retVal;
 }

 /// <summary>
 /// 增加字典。
 /// </summary>
 /// <param name="dictionaryKey">字典主键。</param>
 /// <param name="dictionaryValue">字典内容。</param>
 /// <returns>是否增加字典成功。</returns>
 protected bool AddRawString(string dictionaryKey, string dictionaryValue)
 {
 return m_LocalizationManager.AddRawString(dictionaryKey, dictionaryValue);
 }

 private void Start()
 {
 m_ResourceComponent = GameEntry.GetComponent<ResourceComponent>();
 if (m_ResourceComponent == null)
 {
 Log.Fatal("Resource component is invalid.");
 return;
 }

 m_LocalizationManager = GameFrameworkEntry.GetModule<ILocalizationManager>();
 if (m_LocalizationManager == null)
 {
 Log.Fatal("Localization manager is invalid.");
 return;
 }
 }
 }
}