<?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:----NTM4NTA5NDI2OTQ5NzU1NCA3NzAxNTkzMTA5OTI4NzI5IDY1MTg2NTQ4ODE0OTgxNTY=