/*
 * Copyright 2016. SHENQINCI(沈钦赐)<946736079@qq.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.imagepick.utils;

import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.Color;
import android.os.Build;
import android.support.v4.app.ActivityCompat;
import android.util.TypedValue;

/**
 * 其他常用方法
 * Created by 沈钦赐 on 16/7/12.
 */
public class Utils {

    /**
     * 检测相机是否存在
     * Is camera available boolean.
     *
     * @param context the context
     * @return the boolean
     */
    public static boolean isCameraAvailable(Context context) {
        return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)
                || context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY);
    }


    /**
     * 权限检测
     * Permissions check boolean.
     *
     * @param activity the activity
     * @return the boolean
     */
    public static boolean permissionsCheck(Activity activity) {
        if (Build.VERSION.SDK_INT < 23) return true;
        int writePermission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
        int cameraPermission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.CAMERA);
        if (writePermission != PackageManager.PERMISSION_GRANTED || cameraPermission != PackageManager.PERMISSION_GRANTED) {
            String[] PERMISSIONS = {
                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
                    Manifest.permission.CAMERA
            };
            ActivityCompat.requestPermissions(activity, PERMISSIONS, 1);
            return false;
        }
        return true;
    }


    /**
     * 颜色加深处理
     *
     * @param RGBValues
     * @param RGBValues
     * @return
     */
    public static int colorBurn(int RGBValues) {
        // int alpha = RGBValues >> 24;
        int red = RGBValues >> 16 & 0xFF;
        int green = RGBValues >> 8 & 0xFF;
        int blue = RGBValues & 0xFF;
        red = (int) Math.floor(red * (1 - 0.15));
        green = (int) Math.floor(green * (1 - 0.15));
        blue = (int) Math.floor(blue * (1 - 0.15));
        red = red < 0 ? 0 : red;
        green = green < 0 ? 0 : green;
        blue = blue < 0 ? 0 : blue;
        return Color.rgb(red, green, blue);
    }

    /**
     * Dip to pixels int.
     *
     * @param context the context
     * @param dip     the dip
     * @return the int
     */
    public static int dipToPixels(Context context, int dip) {
        Resources r = context.getResources();
        float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, r.getDisplayMetrics());
        return (int) px;
    }


}