Initial commit — eLegal Software monorepo

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/api/src/routes/billing.ts

@@ -0,0 +1,77 @@
+import type { FastifyInstance } from 'fastify';
+import { z } from 'zod';
+import { eq } from 'drizzle-orm';
+import { getDb, firms } from '@lawdesk/db';
+import { env } from '../env';
+import { getStripe, getPlanConfig, stripeIsConfigured } from '../lib/stripe';
+
+export async function billingRoutes(app: FastifyInstance) {
+  app.addHook('preHandler', app.requireFirm);
+
+  // Status — what does the UI need to show? Configured at all? Current plan? Has subscription?
+  app.get('/api/billing/status', async (req) => {
+    const firmId = req.user!.firmId!;
+    const [firm] = await getDb().select().from(firms).where(eq(firms.id, firmId)).limit(1);
+    return {
+      configured: stripeIsConfigured(),
+      plan: firm?.plan ?? 'starter',
+      hasSubscription: !!firm?.stripeSubscriptionId,
+      hasCustomer: !!firm?.stripeCustomerId,
+    };
+  });
+
+  // Create a Checkout Session — returns the URL to redirect the user to.
+  app.post('/api/billing/checkout', async (req, reply) => {
+    const parsed = z
+      .object({ plan: z.enum(['pro', 'lifetime']) })
+      .safeParse(req.body);
+    if (!parsed.success) return reply.code(400).send({ error: 'invalid_plan' });
+
+    if (!stripeIsConfigured()) return reply.code(503).send({ error: 'stripe_not_configured' });
+
+    const firmId = req.user!.firmId!;
+    const userEmail = req.user!.email;
+    const planCfg = getPlanConfig(parsed.data.plan);
+    if (!planCfg) return reply.code(503).send({ error: 'plan_not_configured' });
+
+    const db = getDb();
+    const [firm] = await db.select().from(firms).where(eq(firms.id, firmId)).limit(1);
+    if (!firm) return reply.code(404).send({ error: 'firm_not_found' });
+
+    const stripe = getStripe();
+
+    // Reuse the customer if we've made one before; otherwise let Checkout create one and we'll
+    // capture it on the webhook.
+    const session = await stripe.checkout.sessions.create({
+      mode: planCfg.mode,
+      line_items: [{ price: planCfg.priceId, quantity: 1 }],
+      customer: firm.stripeCustomerId ?? undefined,
+      customer_email: firm.stripeCustomerId ? undefined : userEmail,
+      client_reference_id: firmId,
+      metadata: { firmId, plan: planCfg.planName },
+      subscription_data:
+        planCfg.mode === 'subscription' ? { metadata: { firmId, plan: planCfg.planName } } : undefined,
+      success_url: `${env.PUBLIC_URL}/billing/success?session_id={CHECKOUT_SESSION_ID}`,
+      cancel_url: `${env.PUBLIC_URL}/billing/cancel`,
+      allow_promotion_codes: true,
+    });
+
+    return { url: session.url };
+  });
+
+  // Customer Portal — for managing the subscription, updating payment method, viewing invoices.
+  app.post('/api/billing/portal', async (req, reply) => {
+    if (!stripeIsConfigured()) return reply.code(503).send({ error: 'stripe_not_configured' });
+
+    const firmId = req.user!.firmId!;
+    const [firm] = await getDb().select().from(firms).where(eq(firms.id, firmId)).limit(1);
+    if (!firm?.stripeCustomerId) return reply.code(404).send({ error: 'no_customer' });
+
+    const stripe = getStripe();
+    const session = await stripe.billingPortal.sessions.create({
+      customer: firm.stripeCustomerId,
+      return_url: `${env.PUBLIC_URL}/app/settings`,
+    });
+    return { url: session.url };
+  });
+}