<?php
/** @license MIT
 * Copyright 2017 J. King, Dustin Wilson et al.
 * See LICENSE and AUTHORS files for details */

declare(strict_types=1);
namespace JKingWeb\Arsse\Db\MySQL;

use JKingWeb\Arsse\Arsse;
use JKingWeb\Arsse\Db\Exception;
use JKingWeb\Arsse\Db\ExceptionInput;
use JKingWeb\Arsse\Db\ExceptionTimeout;

class PDODriver extends Driver {
    use \JKingWeb\Arsse\Db\PDODriver;

    protected $db;

    public static function requirementsMet(): bool {
        return class_exists("PDO") && in_array("mysql", \PDO::getAvailableDrivers());
    }

    protected function makeConnection(string $db, string $user, string $password, string $host, int $port, string $socket) {
        $dsn = [];
        $dsn[] = "charset=utf8mb4";
        $dsn[] = "dbname=$db";
        if (strlen($host)) {
            $dsn[] = "host=$host";
            $dsn[] = "port=$port";
        } elseif (strlen($socket)) {
            $dsn[] = "socket=$socket";
        }
        $dsn = "mysql:".implode(";", $dsn);
        $this->db = new \PDO($dsn, $user, $password, [
            \PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION,
            \PDO::MYSQL_ATTR_INIT_COMMAND => "SET sql_mode = '".self::SQL_MODE."'",
        ]);
    }

    public function __destruct() {
        unset($this->db);
    }

    /** @codeCoverageIgnore */
    public static function create(): \JKingWeb\Arsse\Db\Driver {
        if (self::requirementsMet()) {
            return new self;
        } elseif (Driver::requirementsMet()) {
            return new Driver;
        } else {
            throw new Exception("extMissing", self::driverName());
        }
    }


    public static function driverName(): string {
        return Arsse::$lang->msg("Driver.Db.MySQLPDO.Name");
    }
}