/**
 * Copyright (c) 2013, Redsolution LTD. All rights reserved.
 *
 * This file is part of Xabber project; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License, Version 3.
 *
 * Xabber is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License,
 * along with this program. If not, see http://www.gnu.org/licenses/.
 */
package com.xabber.android.data.extension.vcard;

import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteStatement;
import android.provider.BaseColumns;

import com.xabber.android.data.AbstractTable;
import com.xabber.android.data.DatabaseManager;
import com.xabber.android.data.roster.StructuredName;

/**
 * Storage with useful vcard fields.
 *
 * @author alexander.ivanov
 */
class VCardTable extends AbstractTable {

    private static final class Fields implements BaseColumns {

        private Fields() {
        }

        public static final String USER = "user";
        public static final String NICK_NAME = "nick_name";
        public static final String FORMATTED_NAME = "formatted_name";
        public static final String FIRST_NAME = "first_name";
        public static final String MIDDLE_NAME = "middle_name";
        public static final String LAST_NAME = "last_name";

    }

    private static final String NAME = "vcards";
    private static final String[] PROJECTION = new String[]{Fields.USER,
            Fields.NICK_NAME, Fields.FORMATTED_NAME, Fields.FIRST_NAME,
            Fields.MIDDLE_NAME, Fields.LAST_NAME};

    private final DatabaseManager databaseManager;
    private SQLiteStatement writeStatement;
    private final Object writeLock;

    private final static VCardTable instance;

    static {
        instance = new VCardTable(DatabaseManager.getInstance());
        DatabaseManager.getInstance().addTable(instance);
    }

    public static VCardTable getInstance() {
        return instance;
    }

    private VCardTable(DatabaseManager databaseManager) {
        this.databaseManager = databaseManager;
        writeStatement = null;
        writeLock = new Object();
    }

    @Override
    public void create(SQLiteDatabase db) {
        String sql = "CREATE TABLE " + NAME + " (" + Fields.USER
                + " TEXT PRIMARY KEY," + Fields.NICK_NAME + " TEXT,"
                + Fields.FORMATTED_NAME + " TEXT," + Fields.FIRST_NAME
                + " TEXT," + Fields.MIDDLE_NAME + " TEXT," + Fields.LAST_NAME
                + " TEXT);";
        DatabaseManager.execSQL(db, sql);
    }

    @Override
    public void migrate(SQLiteDatabase db, int toVersion) {
        super.migrate(db, toVersion);
        String sql;
        switch (toVersion) {
            case 11:
                sql = "CREATE TABLE vcards (" + "user TEXT PRIMARY KEY,"
                        + "nick_name TEXT," + "formatted_name TEXT);";
                DatabaseManager.execSQL(db, sql);
                break;
            case 44:
                sql = "UPDATE vcards SET nick_name = \"\" WHERE nick_name IS NULL;";
                DatabaseManager.execSQL(db, sql);
                sql = "UPDATE vcards SET formatted_name = \"\" WHERE formatted_name IS NULL;";
                DatabaseManager.execSQL(db, sql);
                break;
            case 49:
                DatabaseManager.dropTable(db, "vcards");
                sql = "CREATE TABLE vcards (" + "user TEXT PRIMARY KEY,"
                        + "nick_name TEXT," + "formatted_name TEXT,"
                        + "first_name TEXT," + "middle_name TEXT,"
                        + "last_name TEXT);";
                DatabaseManager.execSQL(db, sql);
                break;
            default:
                break;
        }
    }

    void write(String bareAddress, StructuredName name) {
        synchronized (writeLock) {
            if (writeStatement == null) {
                SQLiteDatabase db = databaseManager.getWritableDatabase();
                writeStatement = db.compileStatement("INSERT OR REPLACE INTO "
                        + NAME + " (" + Fields.USER + ", " + Fields.NICK_NAME
                        + ", " + Fields.FORMATTED_NAME + ", "
                        + Fields.FIRST_NAME + ", " + Fields.MIDDLE_NAME + ", "
                        + Fields.LAST_NAME + ") VALUES (?, ?, ?, ?, ?, ?);");
            }
            writeStatement.bindString(1, bareAddress);
            writeStatement.bindString(2, name.getNickName());
            writeStatement.bindString(3, name.getFormattedName());
            writeStatement.bindString(4, name.getFirstName());
            writeStatement.bindString(5, name.getMiddleName());
            writeStatement.bindString(6, name.getLastName());
            writeStatement.execute();
        }
    }

    @Override
    protected String getTableName() {
        return NAME;
    }

    @Override
    protected String[] getProjection() {
        return PROJECTION;
    }

    static String getUser(Cursor cursor) {
        return cursor.getString(cursor.getColumnIndex(Fields.USER));
    }

    static String getNickName(Cursor cursor) {
        return cursor.getString(cursor.getColumnIndex(Fields.NICK_NAME));
    }

    static String getFormattedName(Cursor cursor) {
        return cursor.getString(cursor.getColumnIndex(Fields.FORMATTED_NAME));
    }

    static String getFirstName(Cursor cursor) {
        return cursor.getString(cursor.getColumnIndex(Fields.FIRST_NAME));
    }

    static String getMiddleName(Cursor cursor) {
        return cursor.getString(cursor.getColumnIndex(Fields.MIDDLE_NAME));
    }

    static String getLastName(Cursor cursor) {
        return cursor.getString(cursor.getColumnIndex(Fields.LAST_NAME));
    }

}