<?php

namespace alveolata\database;

// require_once(DIR_ALVEOLATA . '/definitions.php');
require_once(DIR_ALVEOLATA . '/report/functions.php');
require_once(DIR_ALVEOLATA . '/string/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_sqlite {
	
	/**
	 * @var string
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public $path;
	
	
	/**
	 * @var int
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public $verbosity;
	
	
	/**
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public function __construct(
		string $path,
		int $verbosity
	)
	{
		$this->path = $path;
		$this->verbosity = $verbosity;
	}
	
}


/**
 * @author Christian Fraß <frass@greenscale.de>
 */
function sqlite_make(
	string $path,
	int $verbosity = 0
)
{
	return (
		new struct_subject_sqlite(
			$path,
			$verbosity
		)
	);
}


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


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


/**
 * @param struct_subject_sqlite $subject
 * @param string $template
 * @param array $arguments
 * @return array
 * @author Christian Fraß <frass@greenscale.de>
 */
function sqlite_query(
	struct_subject_sqlite $subject,
	string $template,
	array $arguments
) : array
{
	$sqlite3 = new \SQLite3($subject->path);
	$query = $template;
	foreach ($arguments as $key => $value) {
		$pattern = sprintf(':%s', $key);
		$replacement = \alveolata\sql\format($value, function ($x) {return \SQLite3::escapeString($x);});
		$query = str_replace($pattern, $replacement, $query);
	}
	$report = \alveolata\report\make(
		'query',
		[
			'query' => \alveolata\string\replace(
				$query,
				[
					"\n" => ' ',
					"\t" => ' ',
				]
			),
		]
	);
	\alveolata\log\debug_($report);
	$result = $sqlite3->query($query);
	if ($result === false) {
		$report = \alveolata\report\make(
			'query failed',
			[
				'query' => $query,
			]
		);
		throw (\alveolata\report\as_exception($report));
	}
	else {
		$output = [
			'rows' => [],
			'id' => $sqlite3->lastInsertRowId(),
			'affected' => $sqlite3->changes(),
		];
		if ($result->numColumns() > 0) {
			while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
				array_push($output['rows'], $row);
			}
		}
		return $output;
	}
}

?>