/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * 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.android.tv.settings;

import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;

import androidx.preference.Preference;
import androidx.preference.PreferenceGroup;

import java.util.List;

/**
 * Utilities for saving and loading shared prefs.
 */
public final class PreferenceUtils {

    public static final int FLAG_SET_TITLE = 1;

    public static void resolveSystemActivityOrRemove(Context context, PreferenceGroup parent,
            Preference preference, int flags) {
        if (preference == null) {
            return;
        }

        Intent intent = preference.getIntent();
        if (intent != null) {
            // Find the activity that is in the system image
            PackageManager pm = context.getPackageManager();
            List<ResolveInfo> list = pm.queryIntentActivities(intent, 0);
            for (final ResolveInfo resolveInfo : list) {
                if ((resolveInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM)
                        != 0) {

                    // Replace the intent with this specific activity
                    preference.setIntent(new Intent().setClassName(
                            resolveInfo.activityInfo.packageName,
                            resolveInfo.activityInfo.name));

                    if ((flags & FLAG_SET_TITLE) != 0) {
                        // Set the preference title to the activity's label
                        preference.setTitle(resolveInfo.loadLabel(pm));
                    }

                    return;
                }
            }
        }

        // Did not find a matching activity, so remove the preference
        parent.removePreference(preference);
    }
}