M2M Api

backend/src/routes/internal/auth.m2m.ts

@@ -0,0 +1,63 @@
+import { FastifyInstance } from "fastify"
+import jwt from "jsonwebtoken"
+import { and, eq } from "drizzle-orm"
+import { authTenantUsers } from "../../../db/schema"
+import { secrets } from "../../utils/secrets"
+
+export default async function authM2mInternalRoutes(server: FastifyInstance) {
+    server.post("/auth/m2m/token", {
+        schema: {
+            tags: ["Auth"],
+            summary: "Exchange M2M API key for a short-lived JWT",
+            body: {
+                type: "object",
+                properties: {
+                    expires_in_seconds: { type: "number" }
+                }
+            }
+        }
+    }, async (req, reply) => {
+        try {
+            if (!req.user?.user_id || !req.user?.tenant_id || !req.user?.email) {
+                return reply.code(401).send({ error: "Unauthorized" })
+            }
+
+            const membership = await server.db
+                .select()
+                .from(authTenantUsers)
+                .where(and(
+                    eq(authTenantUsers.user_id, req.user.user_id),
+                    eq(authTenantUsers.tenant_id, Number(req.user.tenant_id))
+                ))
+                .limit(1)
+
+            if (!membership[0]) {
+                return reply.code(403).send({ error: "User is not assigned to tenant" })
+            }
+
+            const requestedTtl = Number((req.body as any)?.expires_in_seconds ?? 900)
+            const ttlSeconds = Math.min(3600, Math.max(60, requestedTtl))
+
+            const token = jwt.sign(
+                {
+                    user_id: req.user.user_id,
+                    email: req.user.email,
+                    tenant_id: req.user.tenant_id,
+                },
+                secrets.JWT_SECRET!,
+                { expiresIn: ttlSeconds }
+            )
+
+            return {
+                token_type: "Bearer",
+                access_token: token,
+                expires_in_seconds: ttlSeconds,
+                user_id: req.user.user_id,
+                tenant_id: req.user.tenant_id
+            }
+        } catch (err) {
+            console.error("POST /internal/auth/m2m/token ERROR:", err)
+            return reply.code(500).send({ error: "Internal Server Error" })
+        }
+    })
+}