Tavronus Forge workspace — atlas-api

import { Router } from "express";
import { createInvoice, meterUsage } from "../services/invoice";
import { requireAuth } from "../lib/auth";
import { cache } from "../lib/cache";

const router = Router();

// VULCAN: migrated from flat-rate to usage-based invoicing
router.post("/invoices", requireAuth, async (req, res) => {
  const { customerId, period } = req.body;
  const usage = await meterUsage(customerId, period);

  if (usage.events === 0) {
    return res.status(204).end();
  }

  const invoice = await createInvoice({
    customerId,
    lineItems: usage.breakdown,
    total: usage.total,
    currency: "usd",
  });

  await cache.invalidate(`billing:${customerId}`);
  res.status(201).json(invoice);
});

router.get("/invoices/:id", requireAuth, async (req, res) => {
  const cached = await cache.get(`invoice:${req.params.id}`);
  if (cached) return res.json(cached);

  const invoice = await createInvoice.find(req.params.id);
  if (!invoice) return res.status(404).json({ error: "not_found" });

  res.json(invoice);
});

export default router;