/*
 * 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.cellbroadcastreceiver;

import android.content.Context;
import android.content.res.Resources;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.provider.SearchIndexableResource;
import android.provider.SearchIndexablesProvider;
import android.provider.Settings;
import android.telephony.SubscriptionManager;
import android.telephony.TelephonyManager;

import static android.provider.SearchIndexablesContract.COLUMN_INDEX_NON_INDEXABLE_KEYS_KEY_VALUE;
import static android.provider.SearchIndexablesContract.COLUMN_INDEX_XML_RES_RANK;
import static android.provider.SearchIndexablesContract.COLUMN_INDEX_XML_RES_RESID;
import static android.provider.SearchIndexablesContract.COLUMN_INDEX_XML_RES_CLASS_NAME;
import static android.provider.SearchIndexablesContract.COLUMN_INDEX_XML_RES_ICON_RESID;
import static android.provider.SearchIndexablesContract.COLUMN_INDEX_XML_RES_INTENT_ACTION;
import static android.provider.SearchIndexablesContract.COLUMN_INDEX_XML_RES_INTENT_TARGET_PACKAGE;
import static android.provider.SearchIndexablesContract.COLUMN_INDEX_XML_RES_INTENT_TARGET_CLASS;

import static android.provider.SearchIndexablesContract.INDEXABLES_RAW_COLUMNS;
import static android.provider.SearchIndexablesContract.INDEXABLES_XML_RES_COLUMNS;
import static android.provider.SearchIndexablesContract.NON_INDEXABLES_KEYS_COLUMNS;

public class CellBroadcastSearchIndexableProvider extends SearchIndexablesProvider {
    private static final String TAG = "CellBroadcastSearchIndexableProvider";

    private static SearchIndexableResource[] INDEXABLE_RES = new SearchIndexableResource[] {
            new SearchIndexableResource(1, R.xml.preferences,
                    CellBroadcastSettings.class.getName(),
                    R.mipmap.ic_launcher_cell_broadcast),
    };
    @Override
    public boolean onCreate() {
        return true;
    }

    @Override
    public Cursor queryXmlResources(String[] projection) {
        MatrixCursor cursor = new MatrixCursor(INDEXABLES_XML_RES_COLUMNS);
        final int count = INDEXABLE_RES.length;
        for (int n = 0; n < count; n++) {
            Object[] ref = new Object[7];
            ref[COLUMN_INDEX_XML_RES_RANK] = INDEXABLE_RES[n].rank;
            ref[COLUMN_INDEX_XML_RES_RESID] = INDEXABLE_RES[n].xmlResId;
            ref[COLUMN_INDEX_XML_RES_CLASS_NAME] = null;
            ref[COLUMN_INDEX_XML_RES_ICON_RESID] = INDEXABLE_RES[n].iconResId;
            ref[COLUMN_INDEX_XML_RES_INTENT_ACTION] = "android.intent.action.MAIN";
            ref[COLUMN_INDEX_XML_RES_INTENT_TARGET_PACKAGE] = "com.android.cellbroadcastreceiver";
            ref[COLUMN_INDEX_XML_RES_INTENT_TARGET_CLASS] = INDEXABLE_RES[n].className;
            cursor.addRow(ref);
        }
        return cursor;
    }

    @Override
    public Cursor queryRawData(String[] projection) {
        MatrixCursor cursor = new MatrixCursor(INDEXABLES_RAW_COLUMNS);
        return cursor;
    }

    @Override
    public Cursor queryNonIndexableKeys(String[] projection) {
        MatrixCursor cursor = new MatrixCursor(NON_INDEXABLES_KEYS_COLUMNS);

        // Show extra settings when developer options is enabled in settings.
        boolean enableDevSettings = Settings.Global.getInt(getContext().getContentResolver(),
                Settings.Global.DEVELOPMENT_SETTINGS_ENABLED, 0) != 0;

        Resources res = getContext().getResources();
        boolean showEtwsSettings = res.getBoolean(R.bool.show_etws_settings);

        Object[] ref;

        // Show alert settings and ETWS categories for ETWS builds and developer mode.
        if (!enableDevSettings && !showEtwsSettings) {
            // Remove general emergency alert preference items (not shown for CMAS builds).
            ref = new Object[1];
            ref[COLUMN_INDEX_NON_INDEXABLE_KEYS_KEY_VALUE] =
                    CellBroadcastSettings.KEY_ENABLE_EMERGENCY_ALERTS;
            cursor.addRow(ref);

            ref = new Object[1];
            ref[COLUMN_INDEX_NON_INDEXABLE_KEYS_KEY_VALUE] =
                    CellBroadcastSettings.KEY_ENABLE_ALERT_SPEECH;
            cursor.addRow(ref);

            // Remove ETWS preference category.
            ref = new Object[1];
            ref[COLUMN_INDEX_NON_INDEXABLE_KEYS_KEY_VALUE] =
                    CellBroadcastSettings.KEY_CATEGORY_ETWS_SETTINGS;
            cursor.addRow(ref);
        }

        if (!res.getBoolean(R.bool.show_cmas_settings)) {
            // Remove CMAS preference items in emergency alert category.
            ref = new Object[1];
            ref[COLUMN_INDEX_NON_INDEXABLE_KEYS_KEY_VALUE] =
                    CellBroadcastSettings.KEY_ENABLE_CMAS_EXTREME_THREAT_ALERTS;
            cursor.addRow(ref);

            ref = new Object[1];
            ref[COLUMN_INDEX_NON_INDEXABLE_KEYS_KEY_VALUE] =
                    CellBroadcastSettings.KEY_ENABLE_CMAS_SEVERE_THREAT_ALERTS;
            cursor.addRow(ref);

            ref = new Object[1];
            ref[COLUMN_INDEX_NON_INDEXABLE_KEYS_KEY_VALUE] =
                    CellBroadcastSettings.KEY_ENABLE_CMAS_AMBER_ALERTS;
            cursor.addRow(ref);
        }

        TelephonyManager tm = (TelephonyManager) getContext().getSystemService(
                Context.TELEPHONY_SERVICE);

        int subId = SubscriptionManager.getDefaultSmsSubscriptionId();
        if (subId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
            subId = SubscriptionManager.getDefaultSubscriptionId();
        }

        boolean enableChannel50Support = res.getBoolean(R.bool.show_brazil_settings) ||
                "br".equals(tm.getSimCountryIso(subId));

        if (!enableChannel50Support) {
            ref = new Object[1];
            ref[COLUMN_INDEX_NON_INDEXABLE_KEYS_KEY_VALUE] =
                    CellBroadcastSettings.KEY_CATEGORY_BRAZIL_SETTINGS;
            cursor.addRow(ref);
        }

        if (!enableDevSettings) {
            ref = new Object[1];
            ref[COLUMN_INDEX_NON_INDEXABLE_KEYS_KEY_VALUE] =
                    CellBroadcastSettings.KEY_CATEGORY_DEV_SETTINGS;
            cursor.addRow(ref);
        }

        return cursor;
    }
}