package Simplicity.LT.Tools;

import android.content.Context;

import java.io.File;
import java.lang.reflect.Method;

import dalvik.system.DexFile;

public class SystemProperties {
    /**
     * 根据给定Key获取值.
     *
     * @return 如果不存在该key则返回空字符串
     */
    public static String get(Context context, String key) throws IllegalArgumentException {
        String ret = "";
        try {
            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = cl.loadClass("android.os.SystemProperties");
//参数类型
            @SuppressWarnings("rawtypes")
            Class[] paramTypes = new Class[1];
            paramTypes[0] = String.class;
            Method get = SystemProperties.getMethod("get", paramTypes);
//参数
            Object[] params = new Object[1];
            params[0] = key;
            ret = (String) get.invoke(SystemProperties, params);
        } catch (IllegalArgumentException iAE) {
            throw iAE;
        } catch (Exception e) {
            ret = "";
//TODO
        }
        return ret;
    }



    public static String get(Context context, String key, String def) throws IllegalArgumentException {
        String ret = def;
        try {
            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = cl.loadClass("android.os.SystemProperties");
//参数类型
            @SuppressWarnings("rawtypes")
            Class[] paramTypes = new Class[2];
            paramTypes[0] = String.class;
            paramTypes[1] = String.class;
            Method get = SystemProperties.getMethod("get", paramTypes);
//参数
            Object[] params = new Object[2];
            params[0] = key;
            params[1] = def;
            ret = (String) get.invoke(SystemProperties, params);
        } catch (IllegalArgumentException iAE) {
            throw iAE;
        } catch (Exception e) {
            ret = def;
//TODO
        }
        return ret;
    }


    public static Integer getInt(Context context, String key, int def) throws IllegalArgumentException {
        Integer ret = def;
        try {
            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = cl.loadClass("android.os.SystemProperties");
//参数类型
            @SuppressWarnings("rawtypes")
            Class[] paramTypes = new Class[2];
            paramTypes[0] = String.class;
            paramTypes[1] = int.class;
            Method getInt = SystemProperties.getMethod("getInt", paramTypes);
//参数
            Object[] params = new Object[2];
            params[0] = key;
            params[1] = new Integer(def);
            ret = (Integer) getInt.invoke(SystemProperties, params);
        } catch (IllegalArgumentException iAE) {
            throw iAE;
        } catch (Exception e) {
            ret = def;
//TODO
        }
        return ret;
    }

    /**
     * 根据给定的key返回long类型值.
     *
     * @param key 要查询的key
     * @param def 默认返回值
     * @return 返回一个long类型的值, 如果没有发现则返回默认值

     */
    public static Long getLong(Context context, String key, long def) throws IllegalArgumentException {
        Long ret = def;
        try {
            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = cl.loadClass("android.os.SystemProperties");
//参数类型
            @SuppressWarnings("rawtypes")
            Class[] paramTypes = new Class[2];
            paramTypes[0] = String.class;
            paramTypes[1] = long.class;
            Method getLong = SystemProperties.getMethod("getLong", paramTypes);
//参数
            Object[] params = new Object[2];
            params[0] = key;
            params[1] = new Long(def);
            ret = (Long) getLong.invoke(SystemProperties, params);
        } catch (IllegalArgumentException iAE) {
            throw iAE;
        } catch (Exception e) {
            ret = def;
//TODO
        }
        return ret;
    }

    /**
     * 根据给定的key返回boolean类型值.
     * 如果值为 'n', 'no', '0', 'false' or 'off' 返回false.
     * 如果值为'y', 'yes', '1', 'true' or 'on' 返回true.
     * 如果key不存在, 或者是其它的值, 则返回默认值.
     *

     */
    public static Boolean getBoolean(Context context, String key, boolean def) throws IllegalArgumentException {
        Boolean ret = def;
        try {
            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = cl.loadClass("android.os.SystemProperties");
            //参数类型
            @SuppressWarnings("rawtypes")
            Class[] paramTypes = new Class[2];
            paramTypes[0] = String.class;
            paramTypes[1] = boolean.class;
            Method getBoolean = SystemProperties.getMethod("getBoolean", paramTypes);
            //参数
            Object[] params = new Object[2];
            params[0] = key;
            params[1] = new Boolean(def);
            ret = (Boolean) getBoolean.invoke(SystemProperties, params);
        } catch (IllegalArgumentException iAE) {
            throw iAE;
        } catch (Exception e) {
            ret = def;
//TODO
        }
        return ret;
    }


    public static void set(Context context, String key, String val) throws IllegalArgumentException {
        try {
            @SuppressWarnings("unused")
            DexFile df = new DexFile(new File("/system/app/Settings.apk"));
            @SuppressWarnings("unused")
            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = Class.forName("android.os.SystemProperties");
//参数类型
            @SuppressWarnings("rawtypes")
            Class[] paramTypes = new Class[2];
            paramTypes[0] = String.class;
            paramTypes[1] = String.class;
            Method set = SystemProperties.getMethod("set", paramTypes);
//参数
            Object[] params = new Object[2];
            params[0] = key;
            params[1] = val;
            set.invoke(SystemProperties, params);
        } catch (IllegalArgumentException iAE) {
            throw iAE;
        } catch (Exception e) {
//TODO
        }
    }
}