Refactor VPN proxy client implementation

src/server/http/routes/serverApplyRoute.ts

@@ -0,0 +1,25 @@
+import type { IncomingMessage, ServerResponse } from 'node:http';
+
+import type { ConnectionService } from '../../features/connection/index.js';
+
+interface ServerApplyRouteDependencies {
+  connection: Pick<ConnectionService, 'apply'>;
+  readBody(req: IncomingMessage): Promise<Record<string, unknown>>;
+  withOperation<T>(kind: string, operation: () => Promise<T>): Promise<T>;
+  sendState(res: ServerResponse, extra: { serverId: string; selectedTag: string }): Promise<void>;
+}
+
+export function createServerApplyRoute(dependencies: ServerApplyRouteDependencies) {
+  return {
+    async handle(req: IncomingMessage, res: ServerResponse) {
+      if (req.method !== 'POST' || req.url !== '/api/apply') return false;
+      const { serverId = '', selectedTag = '' } = await dependencies.readBody(req);
+      const result = await dependencies.withOperation(
+        'apply-server',
+        () => dependencies.connection.apply(serverId, selectedTag),
+      );
+      await dependencies.sendState(res, result);
+      return true;
+    },
+  };
+}