/*
 * Copyright (C) 2013 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.providers.contacts.testutil;

import android.content.ContentProviderOperation;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.OperationApplicationException;
import android.database.Cursor;
import android.os.RemoteException;
import android.provider.ContactsContract;
import android.util.Log;

import java.util.ArrayList;
import java.util.List;

/**
 * Common database methods.
 */
public class CommonDatabaseUtils {
    public static final String TAG = CommonDatabaseUtils.class.getSimpleName();

    // primitive value used when record is not found.
    public static final long NOT_FOUND = -1;

    public static String[] singleRecordToArray(Cursor cursor) {
        String[] result = null;
        try {
            if (cursor.moveToNext()) {
                result = new String[cursor.getColumnCount()];
                fillArray(cursor, result);
            }
        } finally {
            closeQuietly(cursor);
        }
        return result;
    }

    public static List<String[]> multiRecordToArray(Cursor cursor) {
        ArrayList<String[]> result = new ArrayList<String[]>();
        try {
            while (cursor.moveToNext()) {
                String[] record = new String[cursor.getColumnCount()];
                fillArray(cursor, record);
                result.add(record);
            }
        } finally {
            closeQuietly(cursor);
        }
        return result;
    }

    private static void fillArray(Cursor cursor, String[] array) {
        for (int i = 0; i < array.length; i++) {
            array[i] = cursor.getString(i);
        }
    }

    public static void closeQuietly(Cursor cursor) {
        if (cursor != null) {
            cursor.close();
        }
    }

    public static void extrasVarArgsToValues(ContentValues values, String... extras) {
        for (int i = 0; i < extras.length; ) {
            values.put(extras[i], extras[i + 1]);
            i += 2;
        }
    }

    public static void applyBatch(ContentResolver resolver,
            ArrayList<ContentProviderOperation> operations) {
        try {
            resolver.applyBatch(ContactsContract.AUTHORITY, operations);
        } catch (OperationApplicationException e) {
            Log.wtf(TAG, "ContentResolver batch operation failed.");
        } catch (RemoteException e) {
            Log.wtf(TAG, "Remote exception when performing batch operation.");
        }
    }

    /**
     * Returns an array of values extracted from a {@link ContentValues}, based on the order of
     * the provided projection.
     * @param values {@link ContentValues} object containing the values to convert into an array
     * @param projection array of column names
     *
     * @return array of values, in the correct order as defined by the projection
     */
    public static Object[] getArrayFromContentValues(ContentValues values, String[] projection) {
        final Object[] result = new Object[projection.length];
        for (int i = 0; i < projection.length; i++) {
            result[i] = values.get(projection[i]);
        }
        return result;
    }
}