feat: integrate Bunny Stream course videos

server/src/routes/courses.ts

@@ -1,12 +1,17 @@
 import type { FastifyPluginAsync } from 'fastify';
 import { z } from 'zod';
 import { pool } from '../db/pool.js';
+import { signedBunnyEmbedUrl, BunnyConfigurationError } from '../providers/bunny.js';
 
 const paramsSchema = z.object({
   courseId: z.string().uuid(),
 });
+const playbackParamsSchema = z.object({
+  courseId: z.string().uuid(),
+  lessonId: z.string().uuid(),
+});
 
-export const courseSelect = (publicOnly = false) => `
+export const courseSelect = (publicOnly = false, includeUnreadyMedia = false) => `
   select
     c.id,
     c.slug,
@@ -46,6 +51,7 @@ export const courseSelect = (publicOnly = false) => `
               jsonb_build_object(
                 'id', lm.id,
                 'provider', lm.provider,
+                'externalId', lm.external_id,
                 'status', lm.status,
                 'embedUrl', lm.embed_url,
                 'playbackUrl', lm.playback_url,
@@ -53,7 +59,7 @@ export const courseSelect = (publicOnly = false) => `
               ) order by lm.created_at
             )
             from lesson_media lm
-            where lm.lesson_id = l.id and lm.status = 'ready'
+            where lm.lesson_id = l.id ${includeUnreadyMedia ? '' : "and lm.status = 'ready'"}
           ), '[]'::jsonb)
         ) order by l.position
       )
@@ -135,4 +141,42 @@ export const courseRoutes: FastifyPluginAsync = async (app) => {
 
     return { data: authenticated ? course : withoutProtectedMedia(course) };
   });
+
+  app.get('/:courseId/lessons/:lessonId/playback', { preHandler: app.authenticate }, async (request, reply) => {
+    const { courseId, lessonId } = playbackParamsSchema.parse(request.params);
+    const result = await pool.query<{
+      provider: string;
+      external_id: string;
+      playback_url: string | null;
+      embed_url: string | null;
+      status: string;
+    }>(
+      `select lm.provider, lm.external_id, lm.playback_url, lm.embed_url, lm.status
+       from lesson_media lm
+       join lessons l on l.id = lm.lesson_id
+       join courses c on c.id = l.course_id
+       where c.id = $1 and l.id = $2 and c.status = 'published'
+       order by lm.created_at
+       limit 1`,
+      [courseId, lessonId],
+    );
+    const media = result.rows[0];
+    if (!media) return reply.code(404).send({ error: 'Lesson media was not found' });
+    if (media.status === 'processing') return reply.code(409).send({ error: 'This video is still being processed by Bunny Stream.' });
+    if (media.status === 'failed') return reply.code(409).send({ error: 'This video could not be processed. Please contact the instructor.' });
+
+    if (media.provider === 'bunny') {
+      try {
+        const playback = signedBunnyEmbedUrl(media.external_id);
+        return { data: { provider: 'bunny', kind: 'embed', ...playback } };
+      } catch (error) {
+        if (error instanceof BunnyConfigurationError) return reply.code(503).send({ error: 'Bunny playback is not configured yet.' });
+        throw error;
+      }
+    }
+
+    const source = media.playback_url || media.embed_url;
+    if (!source) return reply.code(409).send({ error: 'This lesson does not have a playable video URL.' });
+    return { data: { provider: media.provider, kind: 'video', source } };
+  });
 };