mon-panier-bio/index.php

<?php

define('REQUEST_REGEX', '/^\/(?<supplier>[^\/]+)\/?(?<event>[^\/]+)\/?$/');
define('SUPPLIER_REGEX', '/^[A-Za-z]\w{0,31}$/');
define('EVENT_REGEX', '/^\d{4}\-[01]\d\-[0123]\d$/');
define('ACTION_REGEX', '/^[a-z]{1,16}$/i');

$requestUrl = trim(str_replace($_SERVER['QUERY_STRING'], '', $_SERVER['REQUEST_URI']), '?');

if (preg_match(REQUEST_REGEX, $requestUrl, $match)) {
	$requestSupplier = array_key_exists('supplier', $match) ? $match['supplier'] : null;
	$requestEvent = array_key_exists('event', $match) ? $match['event'] : null;

	if (!is_null($requestEvent))
		$requestUrl = rtrim(str_replace($requestEvent, '', $requestUrl), '/');
	if (!is_null($requestSupplier))
		$requestUrl = rtrim(str_replace($requestSupplier, '', $requestUrl), '/');
} 

function generateUrl($supplier = null, $event = null) {
	global $requestUrl;

	if (is_null($supplier))
		return $requestUrl;

	if (is_null($event))
		return sprintf('%s/%s', $requestUrl, $supplier);

	return sprintf('%s/%s/%s', $requestUrl, $supplier, $event);
}

define('CONFIG_FILE', __DIR__ . DIRECTORY_SEPARATOR . 'config.php');
define('DATA_FILE', __DIR__ . DIRECTORY_SEPARATOR . 'data.php');

if (file_exists(CONFIG_FILE)) require_once CONFIG_FILE;
if (!isset($config)) $config = [];

$action = (isset($_REQUEST['action']) and preg_match(ACTION_REGEX, $_REQUEST['action'])) ? $_REQUEST['action'] : null;

$supplier = array_key_exists('supplier', $_REQUEST) ? $_REQUEST['supplier'] : $requestSupplier;
$hasSupplier = is_string($supplier) and preg_match(SUPPLIER_REGEX, $supplier);

if ($hasSupplier) {

	if (!isset($config[$supplier]))
		$config[$supplier] = [];

	$config[$supplier] = array_merge(
		[
			'title' => '%supplier% <small>%date%</small>',
			'description' => '',
			'choices' => [],
			'start' => 'now 00:00:00',
			'frequency' => '1 day',
			'password' => '',

		],
		$config[$supplier]
	);

	$hasPassword = !empty($config[$supplier]['password']);

	if ($action === 'config') {
		if ($hasPassword) {
			if (!isset($_SERVER['PHP_AUTH_USER'])) {
				header(sprintf('WWW-Authenticate: Basic realm="mon-panier-bio config %s"', $supplier));
				header('HTTP/1.0 401 Unauthorized');
				printf('Cette config est protégée par mot de passe !');
				exit;
			} elseif (
				($_SERVER['PHP_AUTH_USER'] !== $supplier)
				or ($_SERVER['PHP_AUTH_PW'] !== $config[$supplier]['password'])
			) {
				header('HTTP/1.0 403 Forbidden');
				printf('Cette config est protégée par mot de passe !');
				exit;
			}
		}

		foreach (array_keys($config[$supplier]) as $key)
			if (isset($_REQUEST[$key]))
				$config[$supplier][$key] = (!in_array($key, ['title', 'description']) ? filter_var($_REQUEST[$key], FILTER_SANITIZE_STRING) : $_REQUEST[$key]);
	}

	if (empty($config[$supplier]['start']))
		$config[$supplier]['start'] = 'now 00:00:00';


	if (is_string($config[$supplier]['choices']))
		$config[$supplier]['choices'] = explode(PHP_EOL, $config[$supplier]['choices']);

	if (!is_array($config[$supplier]['choices']))
		$config[$supplier]['choices'] = [];

	$config[$supplier]['choices'] = array_filter(
		$config[$supplier]['choices'],
		function ($choice) {
			return is_string($choice) and !empty(trim($choice));
		}
	);

	$config[$supplier]['choices'] = array_map('trim', $config[$supplier]['choices']);
}

$isConfig = false;
if ($action === 'config') {
	$output = fopen(CONFIG_FILE, 'w+');
	if ($output) {
		if (flock($output, LOCK_EX)) {
			fwrite($output, '<?php' . PHP_EOL);
			fprintf(
				$output,
				'$config = %s;' . PHP_EOL,
				var_export($config, true)
			);
			flock($output, LOCK_UN);
		}
		fclose($output);
	}
	$isConfig = true;
}

try {
	$event = array_key_exists('event', $_REQUEST) ? $_REQUEST['event'] : $requestEvent;
	$hasEvent = (
		is_string($event)
		and preg_match(EVENT_REGEX, $event)
		and ((new \DateTimeImmutable($event)) instanceof \DateTimeImmutable)
	);
} catch (\Exception $exception) {
	$hasEvent = false;
}
if (!$isConfig and $hasSupplier) {
	$start = new \DateTime($config[$supplier]['start']);
	if (!$hasEvent) {
		$now = new \DateTime('now');
		$current = clone $start;
		$frequency = \DateInterval::createFromDateString($config[$supplier]['frequency']);
		$maxIterations = 1000;
		while (
			($current->getTimestamp() < $now->getTimestamp())
			and ($maxIterations-- > 0)
		) $current->add($frequency);
		$nextEvent = $current->format('Y-m-d');
		header('Location: ' . generateUrl($supplier, $nextEvent));
		die();
	} else {
		$current = new \DateTimeImmutable($event);
		$frequency = \DateInterval::createFromDateString($config[$supplier]['frequency']);
		$previous = $current->sub($frequency);
		$previousEvent = $previous->format('Y-m-d');
		if (false and !array_key_exists($previousEvent, $data[$supplier]))
			unset($previousEvent);
		$next = $current->add($frequency);
		$nextEvent = $next->format('Y-m-d');
		if (false and !array_key_exists($nextEvent, $data[$supplier]))
			unset($nextEvent);
	}

	switch ($action) {
	case 'insert' :
	case 'delete' :
		$isBeginning = (!file_exists(DATA_FILE) or in_array(filesize(DATA_FILE), [ false, 0 ]));
		$output = fopen(DATA_FILE, 'a+');
		if (!$output) break;
		if (!flock($output, LOCK_EX)) break;
		if ($isBeginning)
			fwrite($output, '<?php' . PHP_EOL);
		$item = [];
		foreach (['name', 'choice', 'action'] as $field)
			$item[$field] = filter_var($_REQUEST[$field], FILTER_SANITIZE_STRING);
		$item['timestamp'] = time();
		$item['hash'] = md5(implode([ $item['name'], $item['choice'], ]));
		fprintf(
			$output,
			'$data[%s][%s][] = %s;' . PHP_EOL,
			var_export($supplier, true),
			var_export($event, true),
			str_replace(PHP_EOL, '', var_export($item, true))
		);
		flock($output, LOCK_UN);
		fclose($output);
		header('Location: ' . generateUrl($supplier, $event));
		die();
	}

	if (!isset($data)) $data = [];
	if (file_exists(DATA_FILE)) include DATA_FILE;

	$items = [];

	$allItems = isset($data[$supplier][$event]) ? $data[$supplier][$event] : [];

	usort($allItems, function ($a, $b) {
		$a = intval($a['timestamp']);
		$b = intval($b['timestamp']);
		if ($a === $b)
			return 0;
		return ($a < $b) ? -1 : 1;
	});

	foreach ($allItems as $item) {
		if ($item['action'] === 'insert') {
			$items[] = $item;
		} elseif ($item['action'] === 'delete') {
			foreach ($items as $index => $prevItem)
				if ($prevItem['hash'] === $item['hash'])
					unset($items[$index]);
		}
	}

	$date = (new \IntlDateFormatter('fr_FR.UTF8', \IntlDateFormatter::FULL, \IntlDateFormatter::NONE, 'Europe/Paris'))->format(new \DateTime($event));

	while (preg_match('/%([^%]+)%/i', $config[$supplier]['title'], $match))
		$config[$supplier]['title'] = str_replace(
			$match[0],
			${$match[1]},
			$config[$supplier]['title']
		);

	$stats = [];
	foreach ($items as $item)
		if (!empty($item['choice']))
			$stats[$item['choice']] += 1;

}

?><!DOCTYPE html>
	<html lang="fr">
		<head>
			<meta charset="UTF-8" />
			<meta name="viewport" content="width=device-width, initial-scale=1" />
			<title><?php echo strip_tags($config[$supplier]['title']); ?></title>
			<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
	</head>
	<body>
		<header>
			<nav class="navbar navbar-dark bg-dark">
				<div class="container-fluid">
					<a class="navbar-brand" href="<?php echo $hasSupplier ? generateUrl($supplier) : generateUrl(); ?>">
						<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" fill="currentColor" class="bi bi-basket d-inline-block align-text-top" viewBox="0 0 16 16">
							<path d="M5.757 1.071a.5.5 0 0 1 .172.686L3.383 6h9.234L10.07 1.757a.5.5 0 1 1 .858-.514L13.783 6H15a1 1 0 0 1 1 1v1a1 1 0 0 1-1 1v4.5a2.5 2.5 0 0 1-2.5 2.5h-9A2.5 2.5 0 0 1 1 13.5V9a1 1 0 0 1-1-1V7a1 1 0 0 1 1-1h1.217L5.07 1.243a.5.5 0 0 1 .686-.172zM2 9v4.5A1.5 1.5 0 0 0 3.5 15h9a1.5 1.5 0 0 0 1.5-1.5V9H2zM1 7v1h14V7H1zm3 3a.5.5 0 0 1 .5.5v3a.5.5 0 0 1-1 0v-3A.5.5 0 0 1 4 10zm2 0a.5.5 0 0 1 .5.5v3a.5.5 0 0 1-1 0v-3A.5.5 0 0 1 6 10zm2 0a.5.5 0 0 1 .5.5v3a.5.5 0 0 1-1 0v-3A.5.5 0 0 1 8 10zm2 0a.5.5 0 0 1 .5.5v3a.5.5 0 0 1-1 0v-3a.5.5 0 0 1 .5-.5zm2 0a.5.5 0 0 1 .5.5v3a.5.5 0 0 1-1 0v-3a.5.5 0 0 1 .5-.5z"/>
						</svg>
						<?php echo $hasSupplier ? $supplier : 'Mon panier bio'; ?>
					</a>
					<?php if ($hasSupplier) : ?>
						<span class="navbar-text text-muted">
						<?php if ($isConfig) : ?>
							<a class="text-reset" href="<?php echo generateUrl($supplier); ?>">Retour</a>
						<?php else : ?>
							<?php if ($hasPassword) : ?>
							<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-lock" viewBox="0 0 16 16">
								<path d="M8 1a2 2 0 0 1 2 2v4H6V3a2 2 0 0 1 2-2zm3 6V3a3 3 0 0 0-6 0v4a2 2 0 0 0-2 2v5a2 2 0 0 0 2 2h6a2 2 0 0 0 2-2V9a2 2 0 0 0-2-2zM5 8h6a1 1 0 0 1 1 1v5a1 1 0 0 1-1 1H5a1 1 0 0 1-1-1V9a1 1 0 0 1 1-1z"/>
							</svg>
							<?php else : ?>
							<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-unlock" viewBox="0 0 16 16">
								<path d="M11 1a2 2 0 0 0-2 2v4a2 2 0 0 1 2 2v5a2 2 0 0 1-2 2H3a2 2 0 0 1-2-2V9a2 2 0 0 1 2-2h5V3a3 3 0 0 1 6 0v4a.5.5 0 0 1-1 0V3a2 2 0 0 0-2-2zM3 8a1 1 0 0 0-1 1v5a1 1 0 0 0 1 1h6a1 1 0 0 0 1-1V9a1 1 0 0 0-1-1H3z"/>
							</svg>
							<?php endif; ?>
							<a tabindex="-1" class="text-reset" href="<?php printf('%s?action=config', generateUrl($supplier)); ?>">Configuration</a>
						<?php endif; ?>
						</span>
					<?php endif; ?>
				</div>
			</nav>
		</header>
		<main>
		<?php if (!$hasSupplier) : ?>
			<section class="container-fluid">
				<div class="row my-3">
					<div class="col">
						<div class="alert alert-danger" role="alert">
							Pas de fournisseur !
						</div>
					</div>
				</div>
			</section>
		<?php else : ?>
			<?php if ($isConfig) : ?>
				<section class="container-fluid">
					<div class="row g-3">
						<div class="col">
							<h1>Configuration</h1>
						</div>
					</div>
				</section>
				<section class="container-fluid">
					<div class="row g-3">	
						<form action="<?php echo generateUrl($supplier); ?>" method="post">
							<div class="row mb-3">
								<label for="title" class="col-sm-2 col-form-label">Titre</label>
								<div class="col-sm-10">
									<input class="form-control" type="text" name="title" value="<?php echo htmlspecialchars($config[$supplier]['title']); ?>" />
									<div class="form-text">Le titre de la page. Où <kbd>%supplier%</kbd> est le fournisseur et <kbd>%date%</kbd> la date de l'événement.</div>
								</div>
							</div>
							<div class="row mb-3">
								<label for="description" class="col-sm-2 col-form-label">Description</label>
								<div class="col-sm-10">
									<textarea class="form-control js-ckeditor" name="description" rows="10"><?php echo $config[$supplier]['description']; ?></textarea>
									<div class="form-text">La description affichée sous le titre.</div>
								</div>
							</div>
							<div class="row mb-3">
								<label for="choices" class="col-sm-2 col-form-label">Choix</label>
								<div class="col-sm-10">
									<textarea class="form-control" name="choices" rows="5"><?php echo implode(PHP_EOL, $config[$supplier]['choices']); ?></textarea>
									<div class="form-text">Les différents choix possibles. Un par ligne. Ou pas.</div>
								</div>
							</div>
							<div class="row mb-3">
								<label for="start" class="col-sm-2 col-form-label">Début</label>
								<div class="col-sm-10">
									<input class="form-control" type="date" name="start" value="<?php echo $config[$supplier]['start']; ?>" />
									<div class="form-text">La date du premier événement, si nécessaire de le préciser.</div>
								</div>
							</div>
							<div class="row mb-3">
								<label for="frequency" class="col-sm-2 col-form-label">Fréquence</label>
								<div class="col-sm-10">
									<input class="form-control" type="text" name="frequency" value="<?php echo $config[$supplier]['frequency']; ?>" />
									<div class="form-text">La fréquence des événements dans le format <a class="text-reset" href="https://www.php.net/manual/fr/datetime.formats.relative.php" target="_blank">décrit sur cette page</a>.</div>
								</div>
							</div>
							<div class="row mb-3">
								<label for="password" class="col-sm-2 col-form-label">Mot de passe</label>
								<div class="col-sm-10">
									<input class="form-control" type="text" name="password" value="<?php echo $config[$supplier]['password']; ?>" />
									<div class="form-text">Ce mot de passe sera demandé pour accéder à la configuration la prochaine fois. Le nom d'utilisateur est le fournisseur courant (en l'occurrence <kbd><?php echo $supplier; ?></kbd>).</div>
								</div>
							</div>
							<div class="row">
								<div class="col mb-3">
									<button class="btn btn-primary" type="submit" name="action" value="config">Enregistrer</button>
								</div>
							</div>
						</form>
					</div>
				</section>
			<?php else : ?>
				<section class="container-fluid">
					<div class="row my-3">
						<div class="col">
							<h1>
								<?php echo $config[$supplier]['title']; ?>
								
								<div class="btn-group float-end" role="group">
									<?php if (isset($previousEvent)) : ?>
										<a class="btn btn-outline-primary" href="<?php echo generateUrl($supplier, $previousEvent); ?>" title="Événement précédent">
											<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-left" viewBox="0 0 16 16">
												<path fill-rule="evenodd" d="M15 8a.5.5 0 0 0-.5-.5H2.707l3.147-3.146a.5.5 0 1 0-.708-.708l-4 4a.5.5 0 0 0 0 .708l4 4a.5.5 0 0 0 .708-.708L2.707 8.5H14.5A.5.5 0 0 0 15 8z"/>
											</svg>
										</a>
									<?php endif; ?>
									<a class="btn btn-outline-primary" href="<?php echo generateUrl($supplier, $event); ?>" title="Cet événement">
										<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-link" viewBox="0 0 16 16">
											<path d="M6.354 5.5H4a3 3 0 0 0 0 6h3a3 3 0 0 0 2.83-4H9c-.086 0-.17.01-.25.031A2 2 0 0 1 7 10.5H4a2 2 0 1 1 0-4h1.535c.218-.376.495-.714.82-1z"/>
											<path d="M9 5.5a3 3 0 0 0-2.83 4h1.098A2 2 0 0 1 9 6.5h3a2 2 0 1 1 0 4h-1.535a4.02 4.02 0 0 1-.82 1H12a3 3 0 1 0 0-6H9z"/>
										</svg>
									</a>
									<?php if (isset($nextEvent)) : ?>
										<a class="btn btn-outline-primary" href="<?php echo generateUrl($supplier, $nextEvent); ?>" title="Événement suivant">
											<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-right" viewBox="0 0 16 16">
												<path fill-rule="evenodd" d="M1 8a.5.5 0 0 1 .5-.5h11.793l-3.147-3.146a.5.5 0 0 1 .708-.708l4 4a.5.5 0 0 1 0 .708l-4 4a.5.5 0 0 1-.708-.708L13.293 8.5H1.5A.5.5 0 0 1 1 8z"/>
											</svg>
										</a>
									<?php endif; ?>
								</div>
							</h1>
							<?php if (!empty($config[$supplier]['description'])) : ?>
							<p class="lead"><?php echo $config[$supplier]['description']; ?></p>
							<?php endif; ?>
						</div>
					</div>
				</section>
				<section class="container-fluid">
					<div class="row g-3">	
						<form class="js-localremember" action="<?php echo generateUrl($supplier); ?>" method="post">
							<div class="row mb-3">
								<label for="title" class="col-sm-2 col-form-label">Nom</label>
								<div class="col-sm-10">
									<input class="form-control" type="text" name="name" required placeholder="Nom" />
								</div>
							</div>
							<?php if (!empty($config[$supplier]['choices'])) : ?>
							<div class="row mb-3">
								<label for="title" class="col-sm-2 col-form-label">Choix</label>
								<div class="col-sm-10">
									<div class="btn-group" role="group">
										<?php foreach ($config[$supplier]['choices'] as $index => $choice) : ?>
										<input type="radio" class="btn-check" id="<?php printf('option%d', $index); ?>" autocomplete="off" name="choice" value="<?php echo $choice; ?>" />
										<label class="btn btn-outline-secondary" for="<?php printf('option%d', $index); ?>"><?php echo $choice; ?></label>
										<?php endforeach; ?>
									</div>
								</div>
							</div>
							<?php endif; ?>
							<div class="row">
								<div class="col mb-3">
									<input type="hidden" name="supplier" value="<?php echo $supplier; ?>" />
									<input type="hidden" name="event" value="<?php echo $event; ?>" />
									<?php if (empty($config[$supplier]['choices'])) : ?>
									<input type="hidden" name="choice" value="" />
									<?php endif; ?>
									<button class="btn btn-primary" type="submit" name="action" value="insert">Commander</button>
								</div>
							</div>
						</form>
					</div>
				</section>
				<section class="container-fluid">
					<div class="row my-3">
						<div class="col">
							<div class="table-responsive">
								<table class="table table-striped table-hover align-middle">
									<thead>
										<tr>
											<th scope="col">
												Nom
											</th>
											<?php if (!empty($config[$supplier]['choices'])) : ?>
											<th scope="col">
												Choix
											</th>
											<?php endif; ?>
											<th scope="col">
												&nbsp;
											</th>
										</tr>
									</thead>
									<tbody>
										<?php foreach ($items as $item) : ?>
											<tr>
												<td>
													<?php echo $item['name']; ?>
												</td>
												<?php if (!empty($config[$supplier]['choices'])) : ?>
												<td>
													<?php if (!empty($item['choice'])) : ?>
													<?php echo $item['choice']; ?>
													<?php endif; ?>
												</td>
												<?php endif; ?>
												<td>	
													<form onsubmit="return confirm('Souhaitez-vous vraiment annuler cette commande ?');">
														<input type="hidden" name="supplier" value="<?php echo $supplier; ?>" />
														<input type="hidden" name="event" value="<?php echo $event; ?>" />
														<input type="hidden" name="name" value="<?php echo $item['name']; ?>" />
														<input type="hidden" name="choice" value="<?php echo $item['choice']; ?>" />
														<button class="btn btn-secondary float-end" type="submit" name="action" value="delete">Annuler</button>
													</form>
												</td>
											</tr>
										<?php endforeach; ?>
									</tbody>
									<caption>
										Commandes&nbsp;<span class="badge bg-primary rounded-pill"><?php echo count($items); ?></span>
										<?php foreach ($stats as $choice => $count) : ?>
										/
										<?php echo $choice; ?>&nbsp;<span class="badge bg-secondary rounded-pill"><?php echo $count; ?></span>
										<?php endforeach; ?>
									</caption>
								</table>
							</div>
						</div>
					</div>
				</section>
			<?php endif; ?>
		<?php endif; ?>
		</main>
		<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
		<?php if ($isConfig) : ?>
		<script src="https://cdn.ckeditor.com/ckeditor5/31.0.0/classic/ckeditor.js"></script>
		<script>
			document.querySelectorAll('.js-ckeditor').forEach(function (element) {
				ClassicEditor.create(element).catch(error => { console.error(error); });
			});
		</script>
		<?php endif; ?>
		<script>
			document.querySelectorAll('.js-localremember').forEach(function (form) {
				const fields = [ 'name', 'choice' ];

				form.addEventListener('submit', function (event) {
					fields.forEach(function (field) {
						window.localStorage.setItem('mon_panier_bio_' + field, form.elements[field].value);
					});
				});

				fields.forEach(function (field) {
					if (
						(form.elements[field].value === '')
						&& (window.localStorage.getItem('mon_panier_bio_' + field) !== null)
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