Initial commit

app/api/payment/start/route.ts

@@ -0,0 +1,28 @@
+import { NextResponse } from 'next/server'
+import { FrappeError, METHODS, frappeCall, registrationEnabled } from '@/lib/lukenya-api'
+
+// Asks the backend to open a Paystack checkout for a saved entry and returns its link.
+export async function POST(req: Request) {
+  if (!registrationEnabled()) {
+    return NextResponse.json({ error: 'Online payment is not open yet.' }, { status: 403 })
+  }
+  const body = await req.json().catch(() => ({}))
+  const registration = typeof body.registration === 'string' ? body.registration : ''
+  if (!registration) return NextResponse.json({ error: 'No entry to pay for.' }, { status: 400 })
+
+  try {
+    const result = await frappeCall<{ authorization_url: string; reference: string }>(METHODS.startPayment, {
+      args: {
+        registration,
+        payment_token: typeof body.payment_token === 'string' ? body.payment_token : undefined,
+        channel: body.channel === 'card' ? 'card' : 'mpesa',
+      },
+      post: true,
+    })
+    if (!result?.authorization_url) throw new Error('The payment page could not be opened.')
+    return NextResponse.json(result)
+  } catch (err) {
+    const status = err instanceof FrappeError && err.status < 500 ? 400 : 502
+    return NextResponse.json({ error: (err as Error).message }, { status })
+  }
+}