<?php

namespace ByJG\DbMigration\Database;

use ByJG\AnyDataset\Db\Factory;
use ByJG\Util\Uri;
use Psr\Http\Message\UriInterface;

class DblibDatabase extends AbstractDatabase
{
    public static function prepareEnvironment(UriInterface $uri)
    {
        $database = preg_replace('~^/~', '', $uri->getPath());

        $customUri = new Uri($uri->__toString());

        $dbDriver = Factory::getDbRelationalInstance($customUri->withPath('/')->__toString());
        $dbDriver->execute("IF NOT EXISTS(select * from sys.databases where name='$database') CREATE DATABASE $database");
    }

    public function createDatabase()
    {
        $database = preg_replace('~^/~', '', $this->getDbDriver()->getUri()->getPath());

        $this->getDbDriver()->execute("IF NOT EXISTS(select * from sys.databases where name='$database') CREATE DATABASE $database");
        $this->getDbDriver()->execute("USE $database");
    }

    public function dropDatabase()
    {
        $database = preg_replace('~^/~', '', $this->getDbDriver()->getUri()->getPath());

        $this->getDbDriver()->execute("use master");
        $this->getDbDriver()->execute("drop database $database");
    }

    protected function createTableIfNotExists($database, $createTable)
    {
        $this->getDbDriver()->execute("use $database");

        $sql = "IF (NOT EXISTS (SELECT * \n                 FROM INFORMATION_SCHEMA.TABLES \n                 WHERE TABLE_SCHEMA = 'dbo' \n                 AND  TABLE_NAME = '" . $this->getMigrationTable() . "'))\n            BEGIN\n                $createTable\n            END";

        $this->getDbDriver()->execute($sql);
    }

    /**
     * @throws \ByJG\DbMigration\Exception\DatabaseNotVersionedException
     * @throws \ByJG\DbMigration\Exception\OldVersionSchemaException
     */
    public function createVersion()
    {
        $database = preg_replace('~^/~', '', $this->getDbDriver()->getUri()->getPath());
        $createTable = 'CREATE TABLE ' . $this->getMigrationTable() . ' (version int, status varchar(20), PRIMARY KEY (version))';
        $this->createTableIfNotExists($database, $createTable);
        $this->checkExistsVersion();
    }

    public function executeSql($sql)
    {
        $statements = preg_split("/;(\r\n|\r|\n)/", $sql);

        foreach ($statements as $sql) {
            $this->executeSqlInternal($sql);
        }
    }

    protected function executeSqlInternal($sql)
    {
        if (empty(trim($sql))) {
            return;
        }
        $this->getDbDriver()->execute($sql);
    }

    /**
     * @param $schema
     * @param $table
     * @return bool
     */
    protected function isTableExists($schema, $table)
    {
        $count = $this->getDbDriver()->getScalar(
            'SELECT count(*) FROM information_schema.tables ' .
            ' WHERE table_catalog = [[schema]] ' .
            '  AND table_name = [[table]] ',
            [
                "schema" => $schema,
                "table" => $table
            ]
        );

        return (intval($count) !== 0);
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzA5NjQ5NTk1NzMwMjI5OCAzNTgyMzA4ODk3NzQ0OTEwIDQ0MDIwNDE5MTQ0NjkwNTQ=