<?php

/*
 * LimeSurvey (tm)
 * Copyright (C) 2011 The LimeSurvey Project Team / Carsten Schmitz
 * All rights reserved.
 * License: GNU/GPL License v2 or later, see LICENSE.php
 * LimeSurvey is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 * See COPYRIGHT.php for copyright notices and details.
 *
 */
class InstallCommand extends CConsoleCommand
{

    /**
     * If true, output trace.
     * @var boolean
     */
    public $noisy = false;

    /**
     *
     * @var CDbConnection
     */
    public $connection;

    /**
     * @param array $aArguments
     * @return int
     */
    public function run($aArguments)
    {
        if (isset($aArguments) && isset($aArguments[0]) && isset($aArguments[1]) && isset($aArguments[2]) && isset($aArguments[3])) {
            Yii::import('application.helpers.common_helper', true);

            $this->setNoisy($aArguments);

            try {
                $this->output('Connecting to database...');
                $this->connection = App()->getDb();
                $this->connection->active = true;
                $this->output('Using connection string '.$this->connection->connectionString);
            } catch (CDbException $e) {
                $this->output('Could not connect to database: '.$e->getMessage());
                $this->createDatabase();
            };

            $this->connection->charset = 'utf8';

            switch ($this->connection->driverName) {
                case 'mysql':
                case 'mysqli':
                    $this->connection->createCommand("ALTER DATABASE ".$this->connection->quoteTableName($this->getDBConnectionStringProperty('dbname'))." DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;")->execute();
                    break;
                case 'pgsql':
                case 'dblib':
                case 'mssql':
                case 'sqlsrv':
                    break;
                    default:
                    throw new Exception(sprintf('Unknown database type "%s".', $this->connection->driverName));
            }

            $sFileName = dirname(APPPATH).'/installer/create-database.php';
            require_once($sFileName);
            try {
                $this->output('Creating tables...');
                createDatabase($this->connection);
            } catch (Exception $e) {
                $this->output('Could not create LimeSurvey tables: '.$e->getMessage());
                return 1;
            }

            $this->output('Creating admin user...');
            $this->connection->createCommand()->insert(
                $this->connection->tablePrefix.'users',
                array(
                    'users_name'=>$aArguments[0],
                    'password'=>password_hash($aArguments[1], PASSWORD_DEFAULT),
                    'full_name'=>$aArguments[2],
                    'parent_id'=>0,
                    'lang'=>'auto',
                    'email'=>$aArguments[3]
                )
            );
            $this->connection->createCommand()->insert(
                $this->connection->tablePrefix.'permissions',
                array(
                    'entity'=>'global',
                    'entity_id'=>0,
                    'uid'=>1,
                    'permission'=>'superadmin',
                    'create_p'=>0,
                    'read_p'=>1,
                    'update_p'=>0,
                    'delete_p'=>0,
                    'import_p'=>0,
                    'export_p'=>0
                )
            );
            $this->output('All done!');
            return 0;
        } else {
            // TODO: a valid error process
            echo "You have to set admin/password/full name and email address on the command line like this: php console.php install adminname mypassword fullname emailaddress [verbose]\n";
            return 1;
        }
    }

    /**
     * @param string $sProperty
     * @param string $connectionString
     * @return string|null
     */
    public function getDBConnectionStringProperty($sProperty, $connectionString = null)
    {
        if (!isset($connectionString)) {
            $connectionString = $this->connection->connectionString;
        }
        // Yii doesn't give us a good way to get the database name
        if (preg_match('/'.$sProperty.'=([^;]*)/', $connectionString, $aMatches) == 1) {
            return $aMatches[1];
        }
        return null;
    }

    /**
     * Create database with name?
     * @return void
     */
    protected function createDatabase()
    {
        $this->output('Creating database...');
        App()->configure(array('components'=>array('db'=>array('autoConnect'=>false))));
        $this->connection = App()->db;
        App()->configure(array('components'=>array('db'=>array('autoConnect'=>true))));
        $connectionString = $this->connection->connectionString;
        $this->output($connectionString);
        $this->connection->connectionString = preg_replace('/dbname=([^;]*)/', '', $connectionString);
        try {
            $this->output('Opening connection...');
            $this->connection->active = true;
        } catch (Exception $e) {
            throw new CException("Invalid access data. Check your config.php db access data");
        }

        $sDatabaseName = $this->getDBConnectionStringProperty('dbname', $connectionString);
        try {
            switch ($this->connection->driverName) {
                case 'mysqli':
                case 'mysql':
                    $this->connection->createCommand("CREATE DATABASE `$sDatabaseName` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci")->execute();
                    break;
                case 'dblib':
                case 'mssql':
                case 'odbc':
                    $this->connection->createCommand("CREATE DATABASE [$sDatabaseName];")->execute();
                    break;
                case 'pgsql':
                    $this->connection->createCommand("CREATE DATABASE \"$sDatabaseName\" ENCODING 'UTF8'")->execute();
                    break;
                default:
                    $this->connection->createCommand("CREATE DATABASE $sDatabaseName")->execute();
                    break;
            }
        } catch (Exception $e) {
            throw new CException('Database could not be created because it either existed or you have no permissions');
        }

        $this->connection->active = false;
        $this->connection->connectionString = $connectionString;
        $this->connection->active = true;
    }

    /**
     * @param string $msg
     * @return void
     */
    public function output($msg)
    {
        if ($this->noisy) {
            echo $msg.PHP_EOL;
        }
    }

    /**
     * Set noisy = true if fifth argument is given.
     * @param array $args
     * @return void
     */
    protected function setNoisy(array $args)
    {
        if (isset($args[4]) && $args[4]) {
            $this->noisy = true;
        }
    }
}