typescript

frontend/src/documents/correspondents.ts

@@ -0,0 +1,50 @@
+export interface CorrespondentReference {
+  id?: string | number | null;
+  name?: string | null;
+  key?: string;
+}
+
+export interface DocumentLike {
+  correspondents?: CorrespondentReference[];
+}
+
+export interface ResolvedCorrespondent {
+  id?: string | number | null;
+  name: string;
+  key: string | number;
+}
+
+export const resolveCorrespondents = (doc?: DocumentLike | null): ResolvedCorrespondent[] => {
+  if (!doc || !Array.isArray(doc.correspondents)) {
+    return [];
+  }
+
+  const seen = new Set<string | number>();
+  const results: ResolvedCorrespondent[] = [];
+
+  doc.correspondents.forEach((entry = {}, index) => {
+    const { id, name } = entry;
+    const trimmedName = name?.trim?.();
+    if (!trimmedName) {
+      return;
+    }
+
+    if (id != null && seen.has(id)) {
+      return;
+    }
+
+    if (id != null) {
+      seen.add(id);
+    }
+
+    results.push({
+      id,
+      name: trimmedName,
+      key: id ?? `${trimmedName}-${index}`,
+    });
+  });
+
+  return results;
+};
+
+export default resolveCorrespondents;