using System;
using System.IO;
using System.Text;
using UnityEngine;

namespace MuHua
{
	public static class SaveTool
	{
		/// <summary>默认扩展名</summary>
		public const string EXTENSION = "Json";
		/// <summary>各平台本地保存路径</summary>
		public static string PATH
		{
#if UNITY_IOS
            get { return  Application.persistentDataPath;}
#elif UNITY_ANDROID
            get { return  Application.persistentDataPath;}
#else
			get { return Application.streamingAssetsPath; }
#endif
		}
		#region 字符串保存
		/// <summary>保存字符串到本地文件夹</summary>
		/// <param name="directory">文件夹</param>
		/// <param name="fileName">文件名</param>
		/// <param name="saveString">保存内容</param>
		public static void SaveText(string directory, string fileName, string saveString)
		{
			string filePath = directory + fileName;
			if (!Directory.Exists(directory)) { Directory.CreateDirectory(directory); }
			File.WriteAllText(filePath, saveString);
		}
		/// <summary>读取文件返回字符串</summary>
		/// <param name="filePath">文件路径</param>
		/// <returns>读取内容</returns>
		public static string LoadText(string filePath)
		{
			if (File.Exists(filePath)) { return File.ReadAllText(filePath); }
			else { return null; }
		}
		#endregion
		#region 编码字符串保存
		/// <summary>保存编码字符串到本地文件夹</summary>
		/// <param name="directory">文件夹</param>
		/// <param name="fileName">文件名</param>
		/// <param name="saveString">保存内容</param>
		public static void SaveEncodingString(string directory, string fileName, string saveString, Encoding encodeType)
		{
			string filePath = directory + fileName;
			if (!Directory.Exists(directory)) { Directory.CreateDirectory(directory); }
			byte[] byteArray = encodeType.GetBytes(saveString);
			string base64 = Convert.ToBase64String(byteArray);
			File.WriteAllText(filePath, base64);
		}
		/// <summary>读取编码文件返回字符串</summary>
		/// <param name="filePath">文件路径</param>
		/// <returns>读取内容</returns>
		public static string LoadEncodingString(string filePath, Encoding encodeType)
		{
			if (File.Exists(filePath))
			{
				string base64 = File.ReadAllText(filePath);
				byte[] byteArray = Convert.FromBase64String(base64);
				return encodeType.GetString(byteArray);
			}
			else { return null; }
		}
		#endregion
		#region 对象转Json的保存与加载
		/// <summary>保存Object为Json文件</summary>
		/// <param name="directory">文件夹</param>
		/// <param name="fileName">文件名</param>
		/// <param name="saveObject">保存数据类</param>
		public static void SaveObjectToJson<TSaveObject>(string directory, string fileName, TSaveObject saveObject)
		{
			SaveText(directory, fileName, JsonTool.ToJson(saveObject));
		}
		/// <summary>加载Class</summary>
		/// <typeparam name="TSaveObject">读取的类型</typeparam>
		/// <param name="filePath">文件路径</param>
		/// <returns>读取数据类</returns>
		public static TSaveObject LoadJsonToObject<TSaveObject>(string filePath)
		{
			string json = LoadText(filePath);
			if (json != null) { return JsonTool.FromJson<TSaveObject>(json); }
			else { return default(TSaveObject); }
		}
		#endregion
		#region 对象Encoding的保存与加载
		/// <summary>编码保存Object</summary>
		/// <param name="directory">文件夹</param>
		/// <param name="fileName">文件名</param>
		/// <param name="saveObject">保存数据类</param>
		/// <param name="encodeType">编码类型</param>
		public static void SaveEncodingObject<TSaveObject>(string directory, string fileName, TSaveObject saveObject, Encoding encodeType)
		{
			SaveEncodingString(directory, fileName, JsonTool.ToJson(saveObject), encodeType);
		}
		/// <summary>加载编码Object</summary>
		/// <typeparam name="TSaveObject">读取的类型</typeparam>
		/// <param name="filePath">文件路径</param>
		/// <param name="encodeType">编码类型</param>
		/// <returns>读取数据类</returns>
		public static TSaveObject LoadEncodingObject<TSaveObject>(string filePath, Encoding encodeType)
		{
			string json = LoadEncodingString(filePath, encodeType);
			if (json != null) { return JsonTool.FromJson<TSaveObject>(json); }
			else { return default(TSaveObject); }
		}
		#endregion
	}
}