Initial commit: thbd-portal, duplicated from elmi-portal

Rebranded for Thunderbird Portal (THBD): numbering prefix EL->TH, all
"ELMI"/"ЭЛМИ" UI strings genericized, ELMI's real contract templates and
company legal/bank details removed (not applicable to this company), fresh
VAPID keypair and encryption key, fresh single-migration schema history.
Same architecture as elmi-portal: Web Push notifications, unread-chat app
badge, cookie-session auth.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Gh2UXUQUVBWroWEnn1FLFG

src/app/(admin)/chat/mappers.ts

@@ -0,0 +1,97 @@
+import type { ChatMessage, ConversationSummary } from "./types";
+
+// The chat API returns Drizzle relational shapes (nested `user`/`author`
+// objects, ISO date strings after JSON serialization) — these adapt that
+// wire shape into the flat, timestamp-as-number types the UI works with.
+
+interface RawUser {
+  id: string;
+  name: string;
+  avatarPath: string | null;
+  lastSeenAt: string | null;
+}
+
+interface RawParticipant {
+  userId: string;
+  user: RawUser;
+}
+
+interface RawAttachment {
+  id: string;
+  kind: "file" | "image" | "voice";
+  fileName: string;
+  mimeType: string;
+  durationSeconds: number | null;
+}
+
+interface RawReaction {
+  userId: string;
+  emoji: string;
+  user: RawUser;
+}
+
+interface RawMessage {
+  id: string;
+  conversationId: string;
+  authorId: string;
+  author: RawUser;
+  body: string | null;
+  createdAt: string;
+  replyTo: { id: string; body: string | null; author: RawUser } | null;
+  attachments: RawAttachment[];
+  reactions: RawReaction[];
+}
+
+interface RawConversation {
+  id: string;
+  isGroup: boolean;
+  name: string | null;
+  unreadCount: number;
+  participants: RawParticipant[];
+  lastMessage: { id: string; body: string | null; authorId: string; createdAt: string; attachments: unknown[] } | null;
+}
+
+export function mapMessage(raw: RawMessage): ChatMessage {
+  return {
+    id: raw.id,
+    conversationId: raw.conversationId,
+    authorId: raw.authorId,
+    authorName: raw.author?.name ?? "?",
+    authorHasAvatar: Boolean(raw.author?.avatarPath),
+    body: raw.body,
+    createdAt: new Date(raw.createdAt).getTime(),
+    replyTo: raw.replyTo ? { id: raw.replyTo.id, body: raw.replyTo.body, authorName: raw.replyTo.author?.name ?? "?" } : null,
+    attachments: (raw.attachments ?? []).map((a) => ({
+      id: a.id,
+      kind: a.kind,
+      fileName: a.fileName,
+      mimeType: a.mimeType,
+      durationSeconds: a.durationSeconds,
+    })),
+    reactions: (raw.reactions ?? []).map((r) => ({ emoji: r.emoji, userId: r.userId, userName: r.user?.name ?? "?" })),
+  };
+}
+
+export function mapConversation(raw: RawConversation): ConversationSummary {
+  return {
+    id: raw.id,
+    isGroup: raw.isGroup,
+    name: raw.name,
+    unreadCount: raw.unreadCount,
+    participants: raw.participants.map((p) => ({
+      userId: p.userId,
+      name: p.user?.name ?? "?",
+      hasAvatar: Boolean(p.user?.avatarPath),
+      lastSeenAt: p.user?.lastSeenAt ? new Date(p.user.lastSeenAt).getTime() : null,
+    })),
+    lastMessage: raw.lastMessage
+      ? {
+          id: raw.lastMessage.id,
+          body: raw.lastMessage.body,
+          authorId: raw.lastMessage.authorId,
+          createdAt: new Date(raw.lastMessage.createdAt).getTime(),
+          hasAttachment: (raw.lastMessage.attachments ?? []).length > 0,
+        }
+      : null,
+  };
+}