add control plane service

Co-authored-by: Codex <noreply@openai.com>

exapps/control-plane/src/app.ts

@@ -0,0 +1,59 @@
+import { createServer, type IncomingMessage, type ServerResponse } from "node:http";
+import {
+  CONTROL_PLANE_ROUTES,
+  type ControlPlaneHealthResponse,
+  type ControlPlaneVersionResponse
+} from "@ainas/contracts";
+
+import type { ControlPlaneConfig } from "./config.js";
+import { NextcloudBackendAdapter } from "./adapters/nextcloud-backend.js";
+
+export function createApp(config: ControlPlaneConfig) {
+  const startedAt = Date.now();
+  const nextcloudBackend = new NextcloudBackendAdapter(config.nextcloudBaseUrl);
+
+  return createServer((request, response) => {
+    if (request.method !== "GET" || !request.url) {
+      writeJson(response, 405, { error: "Method not allowed" });
+      return;
+    }
+
+    const url = new URL(request.url, "http://localhost");
+
+    if (url.pathname === CONTROL_PLANE_ROUTES.health) {
+      const payload: ControlPlaneHealthResponse = {
+        service: "control-plane",
+        status: "ok",
+        timestamp: new Date().toISOString(),
+        uptimeSeconds: Math.floor((Date.now() - startedAt) / 1000),
+        nextcloud: nextcloudBackend.describe()
+      };
+
+      writeJson(response, 200, payload);
+      return;
+    }
+
+    if (url.pathname === CONTROL_PLANE_ROUTES.version) {
+      const payload: ControlPlaneVersionResponse = {
+        service: "control-plane",
+        version: config.version,
+        apiVersion: "v1"
+      };
+
+      writeJson(response, 200, payload);
+      return;
+    }
+
+    writeJson(response, 404, {
+      error: "Not found"
+    });
+  });
+}
+
+function writeJson(response: ServerResponse<IncomingMessage>, statusCode: number, payload: unknown) {
+  response.writeHead(statusCode, {
+    "content-type": "application/json; charset=utf-8"
+  });
+  response.end(JSON.stringify(payload));
+}
+