feat: export audience profiles by author ids

src/content/market/author-id-input.ts

@@ -0,0 +1,39 @@
+export interface ParsedAuthorIds {
+  duplicates: string[];
+  invalidTokens: string[];
+  ids: string[];
+}
+
+const AUTHOR_ID_PATTERN = /^\d{16,20}$/;
+
+export function parseAuthorIds(input: string): ParsedAuthorIds {
+  const ids: string[] = [];
+  const duplicates: string[] = [];
+  const invalidTokens: string[] = [];
+  const seen = new Set<string>();
+
+  input
+    .split(/[\s,，;；]+/)
+    .map((token) => token.trim())
+    .filter(Boolean)
+    .forEach((token) => {
+      if (!/^\d+$/.test(token) || !AUTHOR_ID_PATTERN.test(token)) {
+        invalidTokens.push(token);
+        return;
+      }
+
+      if (seen.has(token)) {
+        duplicates.push(token);
+        return;
+      }
+
+      seen.add(token);
+      ids.push(token);
+    });
+
+  return {
+    duplicates,
+    ids,
+    invalidTokens
+  };
+}