package com.example.customlib.util;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Map;

import android.content.Context;
import android.content.SharedPreferences;

/**
 * @Description: SharedPreferences工具類
 * @ClassName: SharedPreferencesUtils
 * @Version: V1.0
 * @Date: 2015-4-1 上午9:44:30
 */
public class SharedPreferencesUtils {
	/** 儲存在手機裡面的檔名 */
	public static final String FILE_NAME = "share_data";

	/**
	 * @Description: 儲存資料的方法，我們需要拿到儲存資料的具體型別，然後根據型別呼叫不同的儲存方法
	 * @Title: put
	 * @param context
	 * @param key
	 * @param object
	 * @ReturnType: void
	 * @Version: V1.0
	 * @Date: 2015-4-1 上午9:38:45
	 */
	public static void put(Context context, String key, Object object) {

		SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		SharedPreferences.Editor editor = sp.edit();

		if (object instanceof String) {
			editor.putString(key, (String) object);
		} else if (object instanceof Integer) {
			editor.putInt(key, (Integer) object);
		} else if (object instanceof Boolean) {
			editor.putBoolean(key, (Boolean) object);
		} else if (object instanceof Float) {
			editor.putFloat(key, (Float) object);
		} else if (object instanceof Long) {
			editor.putLong(key, (Long) object);
		} else {
			editor.putString(key, object.toString());
		}

		SharedPreferencesCompat.apply(editor);
	}

	/**
	 * @Description: 得到儲存資料的方法，我們根據預設值得到儲存的資料的具體型別，然後呼叫相對於的方法獲取值
	 * @Title: get
	 * @param context
	 * @param key
	 * @param defaultObject
	 * @return
	 * @ReturnType: Object
	 * @Version: V1.0
	 * @Date: 2015-4-1 上午9:39:06
	 */
	public static Object get(Context context, String key, Object defaultObject) {
		SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);

		if (defaultObject instanceof String) {
			return sp.getString(key, (String) defaultObject);
		} else if (defaultObject instanceof Integer) {
			return sp.getInt(key, (Integer) defaultObject);
		} else if (defaultObject instanceof Boolean) {
			return sp.getBoolean(key, (Boolean) defaultObject);
		} else if (defaultObject instanceof Float) {
			return sp.getFloat(key, (Float) defaultObject);
		} else if (defaultObject instanceof Long) {
			return sp.getLong(key, (Long) defaultObject);
		}

		return null;
	}

	/**
	 * @Description: 移除某個key值已經對應的值
	 * @Title: remove
	 * @param context
	 * @param key
	 * @ReturnType: void
	 * @Version: V1.0
	 * @Date: 2015-4-1 上午9:39:14
	 */
	public static void remove(Context context, String key) {
		SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		SharedPreferences.Editor editor = sp.edit();
		editor.remove(key);
		SharedPreferencesCompat.apply(editor);
	}

	/**
	 * @Description: 清除所有資料
	 * @Title: clear
	 * @param context
	 * @ReturnType: void
	 * @Version: V1.0
	 * @Date: 2015-4-1 上午9:39:26
	 */
	public static void clear(Context context) {
		SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		SharedPreferences.Editor editor = sp.edit();
		editor.clear();
		SharedPreferencesCompat.apply(editor);
	}

	/**
	 * @Description: 查詢某個key是否已經存在
	 * @Title: contains
	 * @param context
	 * @param key
	 * @return
	 * @ReturnType: boolean
	 * @Version: V1.0
	 * @Date: 2015-4-1 上午9:39:34
	 */
	public static boolean contains(Context context, String key) {
		SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		return sp.contains(key);
	}

	/**
	 * @Description: 返回所有的鍵值對
	 * @Title: getAll
	 * @param context
	 * @return
	 * @ReturnType: Map<String,?>
	 * @Version: V1.0
	 * @Date: 2015-4-1 上午9:39:42
	 */
	public static Map<String, ?> getAll(Context context) {
		SharedPreferences sp = context.getSharedPreferences(FILE_NAME,
				Context.MODE_PRIVATE);
		return sp.getAll();
	}

	/**
	 * @Description: 建立一個解決SharedPreferencesCompat.apply方法的一個相容類
	 * @ClassName: SharedPreferencesCompat
	 * @Version: V1.0
	 * @Date: 2015-4-1 上午9:39:50
	 */
	private static class SharedPreferencesCompat {
		private static final Method sApplyMethod = findApplyMethod();

		/**
		 * @Description: 反射查詢apply的方法
		 * @Title: findApplyMethod
		 * @return
		 * @ReturnType: Method
		 * @Version: V1.0
		 * @Date: 2015-4-1 上午9:39:57
		 */
		@SuppressWarnings({ "unchecked", "rawtypes" })
		private static Method findApplyMethod() {
			try {
				Class clz = SharedPreferences.Editor.class;
				return clz.getMethod("apply");
			} catch (NoSuchMethodException e) {
			}
			return null;
		}

		/**
		 * @Description: 如果找到則使用apply執行，否則使用commit
		 * @Title: apply
		 * @param editor
		 * @ReturnType: void
		 * @Version: V1.0
		 * @Date: 2015-4-1 上午9:40:08
		 */
		public static void apply(SharedPreferences.Editor editor) {
			try {
				if (sApplyMethod != null) {
					sApplyMethod.invoke(editor);
					return;
				}
			} catch (IllegalArgumentException e) {
			} catch (IllegalAccessException e) {
			} catch (InvocationTargetException e) {
			}
			editor.commit();
		}
	}
}