add new chat logic and message service

frontend/src/routes/[fam]/+layout.server.ts

@@ -16,12 +16,40 @@ async function paydayCheck(famId: string, headers: Record<string, string>) {
 	} catch {}
 }
 
+async function resolveChatIdentity(
+	api: 'admin' | 'member',
+	opts: {
+		session?: { famId: string; userId: string };
+		deviceToken?: string;
+		famId?: string;
+	}
+) {
+	try {
+		const headers: Record<string, string> = { 'Content-Type': 'application/json' };
+		if (api === 'admin' && opts.session) {
+			headers['x-session-famid'] = opts.session.famId;
+			headers['x-session-userid'] = opts.session.userId;
+		} else if (api === 'member' && opts.deviceToken && opts.famId) {
+			headers['x-device-token'] = opts.deviceToken;
+			headers['x-device-famid'] = opts.famId;
+		} else {
+			return null;
+		}
+		const res = await fetch(`${HONO_URL}/api/chat/me`, { headers });
+		if (!res.ok) return null;
+		return await res.json();
+	} catch {
+		return null;
+	}
+}
+
 export async function load(event) {
 	const session = event.locals.session || null;
 	const isParent = session !== null;
 	const deviceToken = event.cookies.get('device_token') || '';
 
 	let famId = '';
+	let chat: { famId: string; actor: any } | null = null;
 
 	if (isParent) {
 		famId = session.famId;
@@ -29,6 +57,7 @@ export async function load(event) {
 			'x-session-famid': session.famId,
 			'x-session-userid': session.userId
 		});
+		chat = await resolveChatIdentity('admin', { session });
 	} else if (deviceToken) {
 		try {
 			const res = await fetch(`${HONO_URL}/api/members/seasons`, {
@@ -44,8 +73,9 @@ export async function load(event) {
 				'x-device-token': deviceToken,
 				'x-device-famid': famId
 			});
+			chat = await resolveChatIdentity('member', { deviceToken, famId });
 		}
 	}
 
-	return { session, isParent, role: session?.role || 'child', famId };
+	return { session, isParent, role: session?.role || 'child', famId, chat, deviceToken };
 }