feat: add batch payload builder

src/content/market/batch-payload.ts

@@ -0,0 +1,53 @@
+import type { AuthStateValue } from "../../shared/auth-messages";
+import type { MarketRecord } from "./types";
+
+export interface BatchPayload {
+  authors: Array<{
+    authorId: string;
+    authorName: string;
+  }>;
+  batchId: string;
+  batchName: string;
+  createdAt: string;
+  creatorName: string;
+  logtoUserId: string;
+  resource: string;
+}
+
+export function createBatchPayload(options: {
+  authState: AuthStateValue;
+  batchName: string;
+  createdAt: string;
+  records: MarketRecord[];
+}): BatchPayload {
+  const logtoUserId = options.authState.userInfo?.sub?.trim();
+  if (!logtoUserId) {
+    throw new Error("batch submit user id unavailable");
+  }
+
+  const resource = options.authState.resource?.trim();
+  if (!resource) {
+    throw new Error("batch submit resource unavailable");
+  }
+
+  const batchName = options.batchName.trim();
+  if (!batchName) {
+    throw new Error("batch submit batch name is required");
+  }
+
+  return {
+    authors: options.records.map((record) => ({
+      authorId: record.authorId,
+      authorName: record.authorName
+    })),
+    batchId: `${batchName}-${options.createdAt}`,
+    batchName,
+    createdAt: options.createdAt,
+    creatorName:
+      options.authState.userInfo?.name ??
+      options.authState.userInfo?.username ??
+      logtoUserId,
+    logtoUserId,
+    resource
+  };
+}