finalised client APIs and authentication method

server/api/v1/client/auth/handshake.post.ts

@@ -0,0 +1,45 @@
+import clientHandler from "~/server/internal/clients/handler";
+import { useGlobalCertificateAuthority } from "~/server/plugins/ca";
+
+export default defineEventHandler(async (h3) => {
+  const body = await readBody(h3);
+  const clientId = body.clientId;
+  const token = body.token;
+  if (!clientId || !token)
+    throw createError({
+      statusCode: 400,
+      statusMessage: "Missing token or client ID from body",
+    });
+
+  const metadata = await clientHandler.fetchClient(clientId);
+  if (!metadata)
+    throw createError({
+      statusCode: 403,
+      statusMessage: "Invalid client ID",
+    });
+  if (!metadata.authToken || !metadata.userId)
+    throw createError({
+      statusCode: 400,
+      statusMessage: "Un-authorized client ID",
+    });
+  if (metadata.authToken !== token)
+    throw createError({
+      statusCode: 403,
+      statusMessage: "Invalid token",
+    });
+
+  const ca = useGlobalCertificateAuthority();
+  const bundle = await ca.generateClientCertificate(
+    clientId,
+    metadata.data.name
+  );
+
+  const client = await clientHandler.finialiseClient(clientId);
+  await ca.storeClientCertificate(clientId, bundle);
+
+  return {
+    private: bundle.priv,
+    certificate: bundle.cert,
+    id: client.id,
+  };
+});