/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package org.mozilla.telemetry.util;

import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.support.annotation.RestrictTo;

@RestrictTo(RestrictTo.Scope.LIBRARY)
public class ContextUtils {
    public static String getVersionName(Context context) {
        return getPackageInfo(context).versionName;
    }

    public static int getVersionCode(Context context) {
        return getPackageInfo(context).versionCode;
    }

    public static String getAppName(Context context) {
        final PackageManager packageManager = context.getPackageManager();
        return getApplicationInfo(context).loadLabel(packageManager).toString();
    }

    private static PackageInfo getPackageInfo(Context context) {
        try {
            return context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
        } catch (PackageManager.NameNotFoundException e) {
            throw new AssertionError("Could not get own package info");
        }
    }

    private static ApplicationInfo getApplicationInfo(Context context) {
        try {
            return context.getPackageManager().getApplicationInfo(context.getPackageName(), 0);
        } catch (PackageManager.NameNotFoundException e) {
            throw new AssertionError("Could not get own package info");
        }
    }
}
