feat: add task workflow and asset downloads

lib/server/video-generation-service.ts

@@ -14,10 +14,16 @@ import { normalizeVideoDuration, normalizeVideoRatio, normalizeVideoResolution }
 
 export type SubmitVideoJobInput = PromptAssemblyInput & {
   ownerId?: string;
+  externalClientId?: string;
   prompt?: string;
   settings?: SeedanceSettings;
   materials?: PromptMaterial[];
   retryOf?: string;
+  idempotencyKey?: string;
+  idempotencyFingerprint?: string;
+  priority?: number;
+  maxAttempts?: number;
+  webhookUrl?: string;
 };
 
 export async function submitVideoJob(input: SubmitVideoJobInput, origin: string): Promise<GenerationJob> {
@@ -36,6 +42,7 @@ export async function submitVideoJob(input: SubmitVideoJobInput, origin: string)
   const mock = shouldMockSeedance();
   let job = await createGenerationJob({
     ownerId,
+    externalClientId: input.externalClientId,
     capability: "video.generate",
     provider: mock ? "mock" : "seedance",
     reqKey: config.model,
@@ -49,16 +56,38 @@ export async function submitVideoJob(input: SubmitVideoJobInput, origin: string)
       assembled,
       settings
     },
-    retryOf: input.retryOf
+    retryOf: input.retryOf,
+    idempotencyKey: input.idempotencyKey,
+    idempotencyFingerprint: input.idempotencyFingerprint,
+    priority: input.priority,
+    maxAttempts: input.maxAttempts,
+    webhookUrl: input.webhookUrl
   });
 
-  if (mock) return completeMockVideoJob(job);
+  return job;
+}
 
+export async function advanceVideoJob(jobId: string, origin: string): Promise<GenerationJob> {
+  const job = await getGenerationJob(jobId);
+  if (!job) throw new Error(`Generation job not found: ${jobId}`);
+  if (["succeeded", "failed", "cancelled", "expired"].includes(job.status)) return job;
+  if (job.provider === "mock") return completeMockVideoJob(job);
+  if (!job.providerTaskId) return dispatchVideoJob(job, origin);
+  return syncVideoJob(job.id, origin);
+}
+
+async function dispatchVideoJob(job: GenerationJob, origin: string): Promise<GenerationJob> {
   try {
+    const input = asRecord(job.requestPayload.input) as SubmitVideoJobInput;
+    const assembled = asRecord(job.requestPayload.assembled);
+    const settings = asRecord(job.requestPayload.settings) as SeedanceSettings;
+    const materials = Array.isArray(assembled.materials)
+      ? assembled.materials as PromptMaterial[]
+      : input.materials || [];
     const response = await createSeedanceTask({
-      prompt: finalPrompt,
+      prompt: job.prompt || "",
       settings,
-      materials: assembled.materials,
+      materials,
       origin
     });
     return updateGenerationJob(job.id, {
@@ -140,7 +169,7 @@ async function completeMockVideoJob(job: GenerationJob): Promise<GenerationJob>
     ownerId: job.ownerId,
     kind: "video",
     name: `mock-video-${job.id}.mp4`,
-    url: "/seedance-starter-assets/music_sync_ad/2-3-9-1/result.mp4",
+    url: "/mock/seedance-mock.mp4",
     source: "generated",
     tags: ["video.generate", "mock"],
     metadata: {
@@ -168,3 +197,9 @@ async function completeMockVideoJob(job: GenerationJob): Promise<GenerationJob>
     }
   });
 }
+
+function asRecord(value: unknown): Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value)
+    ? value as Record<string, unknown>
+    : {};
+}