Release v2.2.0

src/web/lib/background-tasks/tasks-adhoc/thumbnail-refresh-template.js

@@ -0,0 +1,65 @@
+const TASK = {
+  taskType: 'template-slide-thumbnail-refresh'
+};
+
+async function fetchPlayerInternalBaseUrl(pool) {
+  const [rows] = await pool.query(
+    `SELECT internal_base_url
+     FROM d_players
+     WHERE device_id = '1'
+     LIMIT 1`
+  );
+
+  return String(rows && rows[0] && rows[0].internal_base_url || '').trim().replace(/\/$/, '') || null;
+}
+
+function registerTemplateSlideThumbnailRefreshTask(options) {
+  const backgroundTaskQueue = options && options.backgroundTaskQueue;
+  const captureSlideThumbnail = options && options.captureSlideThumbnail;
+  const pool = options && options.pool;
+  const common = options && options.common;
+  const mediaDir = String(options && options.mediaDir || '').trim();
+
+  if (!backgroundTaskQueue || typeof captureSlideThumbnail !== 'function' || !pool || !common || !mediaDir) {
+    throw new Error('registerTemplateSlideThumbnailRefreshTask requires the template thumbnail dependencies.');
+  }
+
+  // Walk every slide in the template and regenerate its thumbnail.
+  backgroundTaskQueue.setTaskHandler(TASK.taskType, async function (task) {
+    const payload = task && task.payload ? task.payload : {};
+    const templateId = Number(payload.templateId || 0);
+    if (!Number.isFinite(templateId) || templateId <= 0) {
+      throw new Error('Template id is required.');
+    }
+
+    const playerInternalBaseUrl = await fetchPlayerInternalBaseUrl(pool);
+    if (!playerInternalBaseUrl) {
+      throw new Error('Player internal base URL is required.');
+    }
+
+    const [slides] = await pool.query(
+      'SELECT id, thumbnail_path FROM c_slides WHERE template_id = ? ORDER BY id ASC',
+      [templateId]
+    );
+
+    for (const slide of slides || []) {
+      const slideId = Number(slide && slide.id || 0);
+      if (!Number.isFinite(slideId) || slideId <= 0) {
+        continue;
+      }
+
+      await captureSlideThumbnail({
+        pool: pool,
+        common: common,
+        mediaDir: mediaDir,
+        baseUrl: playerInternalBaseUrl,
+        slideId: slideId,
+        previousThumbnailPath: slide && slide.thumbnail_path ? slide.thumbnail_path : null
+      });
+    }
+
+    return { templateId: templateId, slideCount: Array.isArray(slides) ? slides.length : 0 };
+  });
+}
+
+module.exports = { registerTemplateSlideThumbnailRefreshTask };