Add patient personalization: profile saved once, reused every chat turn

apps/web/app/api/patient-profile/route.ts

@@ -0,0 +1,69 @@
+import { NextResponse } from "next/server";
+import { cookies } from "next/headers";
+import type { PatientProfile, PatientProfileUpdate } from "@duoc-thu/shared-types";
+import { SESSION_COOKIE } from "../auth/session";
+
+const GATEWAY_URL = process.env.API_GATEWAY_URL ?? "http://localhost:3000";
+
+export async function GET() {
+  const token = cookies().get(SESSION_COOKIE)?.value;
+  if (!token) {
+    return NextResponse.json({ error: "not_authenticated" }, { status: 401 });
+  }
+
+  let upstream: Response;
+  try {
+    upstream = await fetch(`${GATEWAY_URL}/auth/patient-profile`, {
+      headers: { Authorization: `Bearer ${token}` },
+      cache: "no-store",
+    });
+  } catch {
+    return NextResponse.json({ error: "gateway_unreachable" }, { status: 502 });
+  }
+
+  if (!upstream.ok) {
+    return NextResponse.json({ error: "not_authenticated" }, { status: 401 });
+  }
+
+  const profile = (await upstream.json()) as PatientProfile;
+  return NextResponse.json(profile);
+}
+
+export async function PUT(request: Request) {
+  const token = cookies().get(SESSION_COOKIE)?.value;
+  if (!token) {
+    return NextResponse.json({ error: "not_authenticated" }, { status: 401 });
+  }
+
+  let body: PatientProfileUpdate;
+  try {
+    body = (await request.json()) as PatientProfileUpdate;
+  } catch {
+    return NextResponse.json({ error: "invalid_body" }, { status: 400 });
+  }
+
+  let upstream: Response;
+  try {
+    upstream = await fetch(`${GATEWAY_URL}/auth/patient-profile`, {
+      method: "PUT",
+      headers: {
+        "Content-Type": "application/json",
+        Authorization: `Bearer ${token}`,
+      },
+      body: JSON.stringify(body),
+      cache: "no-store",
+    });
+  } catch {
+    return NextResponse.json({ error: "gateway_unreachable" }, { status: 502 });
+  }
+
+  if (!upstream.ok) {
+    return NextResponse.json(
+      { error: "save_failed" },
+      { status: upstream.status === 401 ? 401 : 502 }
+    );
+  }
+
+  const profile = (await upstream.json()) as PatientProfile;
+  return NextResponse.json(profile);
+}