<?php

createDB();

function createDB(): SQLite3 {
	$db = new SQLite3('guestbook.db');
	$db->exec('CREATE TABLE user
				(id_user INTEGER PRIMARY KEY,
				username TEXT NOT NULL UNIQUE,
				password TEXT)'
	);
	$db->exec('CREATE TABLE message
				(id_msg INTEGER PRIMARY KEY,
				id_user INT,
				content TEXT NOT NULL,
				date INT,
				FOREIGN KEY (id_user) REFERENCES user (id_user))'
	);
	return $db;
}

// getMessages(['id' => 34, 'since' => 383489289424])

function getMessages(SQLite3 $db, int $limit = 25, array $filter = []) {
	// Apply filters
	$append_string = '';
	$verb = 'WHERE';

	foreach ($filter as $key => $value) {
		$to_append = match($key) {
			'id_msg' => "$verb $key IN (:$key)",
			// TODO
		};
		if ($to_append) {
 			$append_string .= " $to_append";
			$verb = 'AND';
		}
	}

	$query = 'SELECT * FROM message' . $append_string;
	$statement = $db->prepare($query);

	foreach ($filter as $key => $value) {
		$statement->bindValue($key, $value);
	}

	return $statement->execute();
}