S2OJ/web/app/controllers/user_system_msg.php

<?php
	requireLib('bootstrap5');
	requirePHPLib('form');

	if (!Auth::check()) {
		redirectToLogin();
	}

	if (!validateUsername($_GET['username']) || !($user = queryUser($_GET['username']))) {
		become404Page();
	}

	if (!isSuperUser($myUser) && $myUser['username'] != $user['username']) {
		become403Page();
	}

	function newDeleteSystemMsgForm($id) {
		$form = new UOJForm('remove_system_msg_' . $id);
		
		$form->addHidden("msg_id", $id, function($msg_id) {
			global $user;

			if (!validateUInt($msg_id)) {
				return '消息 ID 不是有效的数字';
			}

			$msg = DB::selectFirst("select * from user_system_msg where id = {$msg_id}");
			if (!$msg || $msg['receiver'] != $user['username']) {
				return '消息不存在';
			}

			return '';
		}, null);
		$form->handle = function() {
			$msg_id = $_POST["msg_id"];
			DB::delete("delete from user_system_msg where id = {$msg_id}");
		};
		$form->submit_button_config['text'] = '删除';
		$form->submit_button_config['margin_class'] = 'mt-0';
		$form->submit_button_config['class_str'] = 'btn btn-link text-decoration-none text-danger p-0';
		$form->submit_button_config['align'] = 'inline';
		$form->submit_button_config['smart_confirm'] = '';

		return $form;
	}

	$pag_config = [
		'page_len' => 10,
		'col_names' => ['*'],
		'table_name' => 'user_system_msg',
		'cond' => "receiver = '{$user['username']}'",
		'tail' => 'order by send_time desc',
	];
	$pag = new Paginator($pag_config);

	$system_msgs = [];

	foreach ($pag->get() as $idx => $msg) {
		$system_msgs[$idx] = $msg;

		if (isSuperUser($myUser)) {
			$delete_form = newDeleteSystemMsgForm($msg['id']);
			$delete_form->runAtServer();
			$system_msgs[$idx]['delete_form'] = $delete_form;
		}
	}
	?>

<?php echoUOJPageHeader('系统消息') ?>

<div class="row">
<!-- left col -->
<div class="col-lg-9">

<h1 class="h2">
	系统消息
</h1>

<div class="card mb-3">
	<ul class="list-group list-group-flush">
	<?php foreach ($system_msgs as $msg): ?>
		<li class="list-group-item
			<?= $msg['read_time'] ? '' : 'bg-warning bg-opacity-25' ?>
			">
			<div class="mb-2 d-flex justify-content-between">
				<div>
					<?php if ($msg['title']): ?>
						<h4 class="d-inline"><?= $msg['title'] ?></h4>
					<?php endif ?>

					<span class="text-muted small ms-2 d-inline-block">
						发送时间: <time><?= $msg['send_time'] ?></time>
					</span>
				</div>

				<?php if (isset($msg['delete_form'])): ?>
					<?php $msg['delete_form']->printHTML() ?>
				<?php endif ?>
			</div>

			<div><?= $msg['content'] ?></div>
		</li>
	<?php endforeach ?>
	<?php if ($pag->isEmpty()): ?>
		<div class="text-center">
			<?= UOJLocale::get('none') ?>
		</div>
	<?php endif ?>
	</ul>
</div>

<?= $pag->pagination() ?>

<?php
	if (Auth::id() == $user['username']) {
		DB::update("update user_system_msg set read_time = now() where receiver = '" . $user['username'] . "'");
	}
	?>

</div>
<!-- end left col -->

<!-- right col -->
<aside class="col-lg-3 mt-3 mt-lg-0">
<?php uojIncludeView('sidebar', array()) ?>
</aside>
<!-- end right col -->

</div>

<?php echoUOJPageFooter() ?>