feat(website): add GET /users/me endpoint for authenticated user lookup

website/src/pages/api/users/me.ts

@@ -0,0 +1,39 @@
+import type { APIContext } from 'astro';
+
+import { getBackendHost } from '../../../config.ts';
+import { getInstanceLogger } from '../../../logger.ts';
+import type { ProblemDetail } from '../../../types/ProblemDetail.ts';
+import { getErrorLogMessage } from '../../../util/getErrorLogMessage.ts';
+
+const logger = getInstanceLogger('UsersMe');
+
+export async function GET(context: APIContext): Promise<Response> {
+    const userId = context.locals.gsUserId;
+
+    if (userId === undefined) {
+        const body: ProblemDetail = {
+            title: 'Unauthorized',
+            detail: "You're not authorized to access this resource",
+            status: 401,
+            instance: context.request.url,
+        };
+        return Response.json(body, { status: 401 });
+    }
+
+    try {
+        const response = await fetch(new URL(`/users/${userId}`, getBackendHost()));
+        return new Response(response.body, {
+            status: response.status,
+            headers: response.headers,
+        });
+    } catch (error) {
+        logger.error(getErrorLogMessage(error));
+        const body: ProblemDetail = {
+            title: 'Internal Server Error',
+            detail: 'Failed to connect the backend service',
+            status: 500,
+            instance: context.request.url,
+        };
+        return Response.json(body, { status: 500 });
+    }
+}