<?php

namespace alveolata\database;

// require_once(DIR_ALVEOLATA . '/definitions.php');
require_once(DIR_ALVEOLATA . '/report/functions.php');
require_once(DIR_ALVEOLATA . '/log/functions.php');
require_once(DIR_ALVEOLATA . '/sql/functions.php');


/**
 * @author Christian Fraß <frass@greenscale.de>
 */
class struct_subject_mysql {
	
	/**
	 * @var string
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public $host;
	
	
	/**
	 * @var int
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public $port;
	
	
	/**
	 * @var string
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public $schema;
	
	
	/**
	 * @var string
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public $username;
	
	
	/**
	 * @var string
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public $password;
	
	
	/**
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public function __construct(
		string $host,
		int $port,
		string $schema,
		string $username,
		string $password
	)
	{
		$this->host = $host;
		$this->port = $port;
		$this->schema = $schema;
		$this->username = $username;
		$this->password = $password;
	}
	
}


/**
 * @author Christian Fraß <frass@greenscale.de>
 */
function mysql_make(
	string $host,
	int $port,
	string $schema,
	string $username,
	string $password
) : struct_subject_mysql
{
	return (
		new struct_subject_mysql(
			$host,
			$port,
			$schema,
			$username,
			$password
		)
	);
}


/**
 * @return string
 * @author Christian Fraß <frass@greenscale.de>
 */
function mysql_terminal_autoincrement(
) : string
{
	return 'AUTO_INCREMENT';
}


/**
 * @return string
 * @author Christian Fraß <frass@greenscale.de>
 */
function mysql_boilerplate_field_definition_for_integer_primary_key_with_auto_increment(
) : string
{
	return 'INTEGER PRIMARY KEY AUTO_INCREMENT';
}


/**
 * @param struct_subject_mysql $subject
 * @param string $template
 * @param array $arguments
 * @return array
 * @author Christian Fraß <frass@greenscale.de>
 */
function mysql_query(
	struct_subject_mysql $subject,
	string $template,
	array $arguments
) : array
{
	$connection = \mysqli_connect(
		$subject->host,
		$subject->username,
		$subject->password,
		$subject->schema,
		$subject->port
	);
	\mysqli_options($connection, MYSQLI_OPT_INT_AND_FLOAT_NATIVE, true);
	\mysqli_set_charset($connection, 'utf8');
	\mysqli_query($connection, 'set names \'utf8\'');
	$query = $template;
	foreach ($arguments as $key => $value) {
		$pattern = sprintf(':%s', $key);
		$replacement = \alveolata\sql\format(
			$value,
			function ($x) use ($connection) {
				return \mysqli_real_escape_string($connection, $x);
			}
		);
		$query = str_replace($pattern, $replacement, $query);
	}
	$report = \alveolata\report\make(
		'query',
		[
			'query' => $query,
		]
	);
	\alveolata\log\debug_($report);
	$result = \mysqli_query($connection, $query);
	if ($result === false) {
		$report = \alveolata\report\make(
			'query failed',
			[
				'query' => $query,
				'reason' => \mysqli_error($connection),
			]
		);
		throw (\alveolata\report\as_exception($report));
	}
	else if ($result === true) {
		$output = [
			'rows' => [],
			'id' => mysqli_insert_id($connection),
			'affected' => \mysqli_affected_rows($connection),
		];
		return $output;
	}
	else {
		$output = [
			'rows' => $result->fetch_all(MYSQLI_ASSOC),
			'id' => 0,
			'affected' => 0,
		];
		return $output;
	}
}

?>