<?php

namespace ByJG\DbMigration\Database;

use ByJG\AnyDataset\Db\Factory;
use ByJG\DbMigration\Exception\DatabaseNotVersionedException;
use ByJG\DbMigration\Exception\OldVersionSchemaException;
use ByJG\Util\Uri;
use Psr\Http\Message\UriInterface;

class DblibDatabase extends AbstractDatabase
{
    public static function schema(): array
    {
        return ['dblib', 'sqlsrv'];
    }

    public static function prepareEnvironment(UriInterface $uri): void
    {
        $database = preg_replace('~^/~', '', $uri->getPath());

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

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

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

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

    protected function createTableIfNotExists(string $database, string $createTable): void
    {
        $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 DatabaseNotVersionedException
     * @throws OldVersionSchemaException
     */
    public function createVersion(): void
    {
        $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(string $sql): void
    {
        $statements = preg_split("/;(\r\n|\r|\n)/", $sql);

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

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

    /**
     * @param string|null $schema
     * @param string $table
     * @return bool
     */
    protected function isTableExists(?string $schema, string $table): bool
    {
        $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:----NTczNTgxOTc3ODEyNTIxNCAxNzgxNTAxMTI3MzY4MzU5IDYwNjU2NjQ5ODg3NjM4ODE=