Add show management and going-live controls to admin
- admin/shows.php: list shows - admin/show_edit.php: add, edit and delete shows, with validated background image uploads saved under generated names - admin/index.php: queue the next show, switch the live show, or clear the queue - includes/broadcasts.php: setBroadcastShow() and clearQueuedShow(), shared by the dashboard and cli/set_show.php - includes/admin_layout.php: flash messages and Shows nav link Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Daniel MesserandClaude Opus 5.5 committed
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<?php
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require __DIR__ . '/../includes/auth.php';
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require __DIR__ . '/../includes/admin_layout.php';
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$admin = requireAdmin();
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$db = getDB();
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const BACKGROUND_DIR = __DIR__ . '/../images/backgrounds/';
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const MAX_BACKGROUND_BYTES = 5 * 1024 * 1024;
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// Uploads are identified by their content, not their filename, and saved under a generated name
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const BACKGROUND_TYPES = ['image/jpeg' => 'jpg', 'image/png' => 'png', 'image/webp' => 'webp'];
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function slugify(string $name): string {
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$slug = strtolower(str_replace(["'", '’'], '', $name));
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return trim(preg_replace('/[^a-z0-9]+/', '-', $slug), '-');
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}
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function deleteBackground(?string $filename): void {
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if ($filename && is_file(BACKGROUND_DIR . basename($filename))) {
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unlink(BACKGROUND_DIR . basename($filename));
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}
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}
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$id = (int)($_GET['id'] ?? 0);
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$show = ['id' => 0, 'name' => '', 'slug' => '', 'background_image' => null];
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if ($id) {
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$stmt = $db->prepare('SELECT id, name, slug, background_image FROM shows WHERE id = ?');
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$stmt->execute([$id]);
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$show = $stmt->fetch();
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if (!$show) {
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http_response_code(404);
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exit('Show not found.');
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}
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}
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$errors = [];
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if ($_SERVER['REQUEST_METHOD'] === 'POST') {
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// PHP discards the whole form when a request exceeds post_max_size, so catch that before the CSRF check
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if (empty($_POST) && (int)($_SERVER['CONTENT_LENGTH'] ?? 0) > 0) {
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$errors[] = 'That upload is too large. Background images can be up to ' . (MAX_BACKGROUND_BYTES / 1024 / 1024) . ' MB.';
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} else {
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verifyCsrf();
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if (($_POST['action'] ?? '') === 'delete' && $id) {
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$db->prepare('DELETE FROM shows WHERE id = ?')->execute([$id]);
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deleteBackground($show['background_image']);
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flash("Deleted {$show['name']}.");
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header('Location: shows.php');
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exit;
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}
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$show['name'] = trim((string)($_POST['name'] ?? ''));
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$show['slug'] = trim((string)($_POST['slug'] ?? '')) ?: slugify($show['name']);
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if ($show['name'] === '' || mb_strlen($show['name']) > 255) {
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$errors[] = 'Name is required (up to 255 characters).';
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}
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if (!preg_match('/^[a-z0-9]+(-[a-z0-9]+)*$/', $show['slug']) || strlen($show['slug']) > 64) {
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$errors[] = 'Slug may only contain lowercase letters, numbers and single dashes (up to 64 characters).';
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} else {
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$stmt = $db->prepare('SELECT COUNT(*) FROM shows WHERE slug = ? AND id != ?');
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$stmt->execute([$show['slug'], $id]);
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if ($stmt->fetchColumn() > 0) $errors[] = "Another show already uses the slug '{$show['slug']}'.";
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}
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$upload = $_FILES['background'] ?? null;
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$uploadExt = null;
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if ($upload && $upload['error'] !== UPLOAD_ERR_NO_FILE) {
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if (in_array($upload['error'], [UPLOAD_ERR_INI_SIZE, UPLOAD_ERR_FORM_SIZE], true) || $upload['size'] > MAX_BACKGROUND_BYTES) {
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$errors[] = 'Background images can be up to ' . (MAX_BACKGROUND_BYTES / 1024 / 1024) . ' MB.';
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} elseif ($upload['error'] !== UPLOAD_ERR_OK) {
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$errors[] = 'The background image failed to upload. Please try again.';
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} else {
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$mime = (new finfo(FILEINFO_MIME_TYPE))->file($upload['tmp_name']);
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$uploadExt = BACKGROUND_TYPES[$mime] ?? null;
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if ($uploadExt === null || getimagesize($upload['tmp_name']) === false) {
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$errors[] = 'Background images must be JPEG, PNG or WebP.';
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}
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}
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}
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if (!$errors) {
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$oldBackground = $show['background_image'];
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if ($uploadExt !== null) {
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$filename = $show['slug'] . '-' . bin2hex(random_bytes(4)) . '.' . $uploadExt;
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if (move_uploaded_file($upload['tmp_name'], BACKGROUND_DIR . $filename)) {
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$show['background_image'] = $filename;
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} else {
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$errors[] = 'The background image could not be saved. Check that the web server can write to images/backgrounds/.';
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}
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} elseif (!empty($_POST['remove_background'])) {
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$show['background_image'] = null;
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}
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}
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if (!$errors) {
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if ($id) {
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$db->prepare('UPDATE shows SET name = ?, slug = ?, background_image = ? WHERE id = ?')
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->execute([$show['name'], $show['slug'], $show['background_image'], $id]);
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} else {
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$db->prepare('INSERT INTO shows (name, slug, background_image) VALUES (?, ?, ?)')
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->execute([$show['name'], $show['slug'], $show['background_image']]);
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}
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if ($oldBackground !== $show['background_image']) deleteBackground($oldBackground);
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flash("Saved {$show['name']}.");
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header('Location: shows.php');
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exit;
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}
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}
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}
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adminHeader($id ? 'Edit Show' : 'Add a Show', $admin);
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?>
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<?php foreach ($errors as $error): ?>
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<p class="admin-message error"><?= e($error) ?></p>
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<?php endforeach; ?>
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<form method="post" enctype="multipart/form-data" action="show_edit.php<?= $id ? '?id=' . $id : '' ?>">
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<?= csrfField() ?>
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<input type="hidden" name="MAX_FILE_SIZE" value="<?= MAX_BACKGROUND_BYTES ?>" />
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<div class="row gtr-uniform gtr-50">
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<div class="col-12">
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<label for="name">Name</label>
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<input type="text" name="name" id="name" value="<?= e($show['name']) ?>" maxlength="255" required />
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</div>
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<div class="col-12">
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<label for="slug">Slug</label>
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<input type="text" name="slug" id="slug" value="<?= e($show['slug']) ?>" maxlength="64" pattern="[a-z0-9]+(-[a-z0-9]+)*" placeholder="Leave blank to generate from the name" />
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<p><small>Short name used by <code>cli/set_show.php</code>. Lowercase letters, numbers and dashes.</small></p>
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</div>
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<div class="col-12">
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<label for="background">Background image</label>
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<?php if ($show['background_image']): ?>
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<p><img src="../images/backgrounds/<?= e(rawurlencode($show['background_image'])) ?>" alt="Current background" style="max-width:320px;border-radius:4px;display:block;"></p>
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<?php endif; ?>
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<input type="file" name="background" id="background" accept="image/jpeg,image/png,image/webp" />
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<p><small>JPEG, PNG or WebP, up to <?= MAX_BACKGROUND_BYTES / 1024 / 1024 ?> MB. Shown behind the player on the live page during this show.</small></p>
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<?php if ($show['background_image']): ?>
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<input type="checkbox" name="remove_background" id="remove_background" value="1" />
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<label for="remove_background">Remove background (use the default)</label>
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<?php endif; ?>
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</div>
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<div class="col-12">
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<ul class="actions">
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<li><input type="submit" class="primary" value="Save" /></li>
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<li><a href="shows.php" class="button">Cancel</a></li>
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</ul>
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</div>
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</div>
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</form>
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<?php if ($id): ?>
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<hr />
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<form method="post" action="show_edit.php?id=<?= $id ?>" onsubmit="return confirm('Delete <?= e(addslashes($show['name'])) ?>? This cannot be undone.');">
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<?= csrfField() ?>
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<input type="hidden" name="action" value="delete" />
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<input type="submit" class="small" value="Delete this show" />
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</form>
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<?php endif; ?>
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<?php
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adminFooter();
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