增加即梦的生图和生视频功能

lib/seedance/client.ts

@@ -23,7 +23,7 @@ export type SeedanceCreateInput = {
 };
 
 export type SeedanceQueryResult = {
-  status: "queued" | "running" | "succeeded" | "failed" | "cancelled";
+  status: "queued" | "running" | "succeeded" | "failed" | "cancelled" | "expired";
   resultUrl?: string;
   errorMessage?: string;
   usage?: SeedanceUsage;
@@ -49,11 +49,15 @@ export function getSeedanceConfig() {
 export async function createSeedanceTask(input: SeedanceCreateInput) {
   const config = getSeedanceConfig();
   if (!config.apiKey) throw new Error("缺少 SEEDANCE_API_KEY。请在 .env.local 配置火山方舟 API Key。");
+  const materialContent = materialContentForProvider(input.materials, input.origin);
+  if (materialContent.length > 4) {
+    throw new Error("Seedance 2.0 最多支持 4 个素材（加上文本后 content 最多 5 项）。");
+  }
   const payload = {
     model: config.model,
     content: [
       { type: "text", text: input.prompt },
-      ...materialContentForProvider(input.materials, input.origin)
+      ...materialContent
     ],
     generate_audio: true,
     ratio: normalizeVideoRatio(input.settings.ratio, config.ratio),
@@ -123,7 +127,8 @@ export function extractSeedanceUsage(value: unknown): SeedanceUsage | undefined
 function normalizeSeedanceStatus(status: unknown): SeedanceQueryResult["status"] {
   const value = String(status || "").toLowerCase();
   if (["succeeded", "success", "completed"].includes(value)) return "succeeded";
-  if (["failed", "error", "expired", "timeout"].includes(value)) return "failed";
+  if (["expired", "timeout"].includes(value)) return "expired";
+  if (["failed", "error"].includes(value)) return "failed";
   if (["cancelled", "canceled"].includes(value)) return "cancelled";
   if (["running", "processing", "generating"].includes(value)) return "running";
   return "queued";