feat: 将视频转写重构为纯文字异步语音识别

lib/stt/types.ts

@@ -0,0 +1,33 @@
+export type TranscriptionStatus =
+  | "PENDING"
+  | "QUEUED"
+  | "PROCESSING"
+  | "SUCCEEDED"
+  | "FAILED";
+export type Transcript = { transcript: string[] };
+export type TranscriptionState = {
+  status: TranscriptionStatus;
+  error: string | null;
+  transcript: string[] | null;
+};
+export const statusLabels: Record<TranscriptionStatus, string> = {
+  PENDING: "待转写",
+  QUEUED: "排队中",
+  PROCESSING: "处理中",
+  SUCCEEDED: "已完成",
+  FAILED: "失败",
+};
+export function isActive(status: string) {
+  return status === "QUEUED" || status === "PROCESSING";
+}
+export function transcriptionState(
+  transcript: Transcript | null,
+  task: { status: string; lastError: string | null } | null,
+): TranscriptionState {
+  return {
+    status: (task?.status ??
+      (transcript ? "SUCCEEDED" : "PENDING")) as TranscriptionStatus,
+    error: task?.lastError ?? null,
+    transcript: transcript?.transcript ?? null,
+  };
+}