sessioncommunities.online/sites/+components/tbl_communities.php

<?php
	require_once "$PROJECT_ROOT/php/utils/utils.php";
	require_once "$PROJECT_ROOT/php/utils/servers-rooms.php";
	require_once "$PROJECT_ROOT/php/utils/room-invites.php";

	/**
	 * @var CommunityRoom[] $rooms
	 */

	// Once handlers are attached in JS, this check ceases to be useful.
	function column_sortable($id) {
		// Join URL contents are not guaranteed to have visible text.
		return $id != "qr_code" && $id != "preview" && $id != "join_url";
	}

	function sort_onclick($colno) {
		global $TABLE_COLUMNS;
		$column = $TABLE_COLUMNS[$colno];
		$name = isset($column['name_long']) ? $column['name_long'] : $column['name'];
		if (!column_sortable($column['id'])) return " title='$name'";
		return " title='Click to sort by $name.'";
	}

	// Note: Changing the names displayed requires updating
	// the --expanded-static-column-width and --collapsed-static-column-width CSS variables.

	$TABLE_COLUMNS = [
		['id' => "identifier", 'name' => "Identifier", 'name_long' => "Room identifier"],
		['id' => "language", 'name' => "L", 'name_long' => "Language"],
		['id' => "name", 'name' => "Name"],
		['id' => "description", 'name' => "About", 'name_long' => "Description"],
		['id' => "users", 'name' => "#", 'name_long' => "Active Users"],
		['id' => "preview", 'name' => "Preview"],
		['id' => "qr_code", 'name' => "QR", 'name_long' => "QR Code (for use in-app)"],
		['id' => "server_icon", 'name' => "Host", 'name_long' => "Server host"],
		['id' => "join_url", 'name' => "URL", 'name_long' => "Join URL (for use in-app)"],
	];
?>

<table id="tbl_communities">
	<tr>
<?php foreach ($TABLE_COLUMNS as $colno => $column): ?>
		<th<?=sort_onclick($colno)?> id="th_<?=$column['id']?>">
			<?=$column['name']?>

		</th>
<?php endforeach; ?>
	</tr>
<?php foreach ($rooms as $id => $room): ?>
	<?php
		$pubkey = $room->server->get_pubkey();
		$icon_hue = hexdec($pubkey[2] . $pubkey[2]);
		$icon_color = "hsl($icon_hue, 80%, 50%)";

		$hostname = $room->server->get_base_url();

		$id = html_sanitize($room->get_room_identifier());
		$language = html_sanitize($room->language_flag);
		$name = html_sanitize($room->name);
		$desc = html_sanitize($room->description);
		$users = html_sanitize($room->active_users);
		$users_cutoff = html_sanitize($room->format_user_cutoff_period());
		$preview_link = html_sanitize($room->get_preview_url());
		$join_link = html_sanitize($room->get_join_url());
		$pubkey = html_sanitize($pubkey);
		$hostname = html_sanitize($hostname);
		
		$staff_json = json_encode(array_map('html_sanitize', $room->get_staff()));
		$tags_json = json_encode($room->get_room_tags());
	?>

	<tr id="<?=$id?>" class="room-row" itemscope itemtype="https://schema.org/EntryPoint"
		data-identifier="<?=$id?>"
		data-pubkey="<?=$pubkey?>"
		data-hostname="<?=$hostname?>"
		data-staff='<?=$staff_json?>'
		data-tags='<?=$tags_json?>'
	>
		<td class="td_identifier" itemprop="identifier"><?=$id?></td>
		<td class="td_language" title="Language flag for '<?=$name?>'"><?=$language?></td>
		<td class="td_name"
			data-sort-by="<?=strtolower($name)?>"
		>
			<a
				href="<?=$preview_link?>"
				class="td_name-inner"
				target="_blank"
				title="Click here to preview '<?=$name?>'"
				rel="noopener noreferrer"
				itemprop="name"
			><?=
				$name
			?></a>
			<span class="room-labels-container">
<?php foreach ($room->get_room_tags() as $tag): if (CommunityTag::is_showcased_tag($tag->text)): ?>
				<span
					class="room-label <?=$tag->get_tag_classname()?> badge"
					title="<?=$tag->description?>"
				><?=
					truncate($tag->text, 16)
				?></span>
<?php endif; endforeach; ?>
			</span>
		</td>
		<td
			class="td_description"
			title="Description for '<?=$name?>':

<?=$desc?>"
			itemprop="description"
		><?=$desc?></td>
		<td
			class="td_users"
			title="'<?=$name?>' has had <?=$users?> active users in the last <?=$users_cutoff?>."
		><?=$users?></td>
		<td class="td_preview" itemprop="url">
			<a 
				href="<?=$preview_link?>" 
				title="Click here to preview '<?=$name?>'" 
				target="_blank" 
				rel="noopener noreferrer nofollow"
			>
				<span class="protocol-indicator"></span>
			</a>
		</td>
		<td class="td_qr_code">
			<a
				class="qr-code-button"
				href="<?=room_qr_code($room)?>"
				target="_blank"
			>
				<img
					class="qr-code-icon"
					src="qrcode-solid.svg"
					alt="Pictogram of a QR code"
					title="Click here to view the details for '<?=$name?>'"
				>
			</a>
		</td>
		<td class="td_server_icon"
			data-sort-by="<?=$pubkey?>"
			title="Host: <?=$hostname?> (<?=$pubkey?>)"
			item="image"
		>
			<div class="td_server_icon-circle" style="background-color: <?=$icon_color?>">
				<span><?=strtoupper($pubkey[0] . $pubkey[1])?></span>
			</div>
		</td>
		<td class="td_join_url">
			<div class="join_url_container" data-url="<?=$join_link?>">
				<span class="join_url show-from-w5" title="<?=$join_link?>"
					><?=truncate($join_link, 32)?></span>
				<a
					class="noscript"
					title="Copy this link to join '<?=$name?>'."
					href="<?=$join_link?>"
					rel="external nofollow"
				>Copy link</a>
			</div>
		</td>
	</tr>
<?php endforeach; ?>
</table>