Initial Product release

src/data/screens.js

@@ -0,0 +1,44 @@
+function slugify(value) {
+  return String(value || '')
+    .toLowerCase()
+    .trim()
+    .replace(/[^a-z0-9]+/g, '-')
+    .replace(/^-+|-+$/g, '')
+    .replace(/-{2,}/g, '-');
+}
+
+async function uniqueScreenSlug(pool, baseSlug) {
+  const start = baseSlug || `screen-${Date.now()}`;
+  let candidate = start;
+  let counter = 2;
+  while (true) {
+    const [rows] = await pool.query('SELECT id FROM screens WHERE slug = ?', [candidate]);
+    if (!rows.length) {
+      return candidate;
+    }
+    candidate = `${start}-${counter}`;
+    counter += 1;
+  }
+}
+
+async function fetchScreenById(pool, id) {
+  const [rows] = await pool.query(`
+    SELECT s.*, p.name AS playlist_name
+    FROM screens s
+    LEFT JOIN playlists p ON p.id = s.playlist_id
+    WHERE s.id = ?
+  `, [id]);
+  return rows[0] || null;
+}
+
+async function fetchScreenEditData(pool) {
+  const [playlists] = await pool.query('SELECT * FROM playlists ORDER BY id DESC');
+  return { playlists };
+}
+
+module.exports = {
+  slugify,
+  uniqueScreenSlug,
+  fetchScreenById,
+  fetchScreenEditData
+};