enable bill storing

pages/api/daysbooked.ts

@@ -0,0 +1,20 @@
+import { NextApiRequest, NextApiResponse } from 'next'
+import { getBookedDays } from '../../db/index'
+
+export default async function useHandler(
+  req: NextApiRequest,
+  res: NextApiResponse
+) {
+  const { method } = req
+
+  switch (method) {
+    case 'GET':
+      const days = await getBookedDays()
+      res.statusCode = 200
+      res.json(days)
+      break
+    default:
+      res.setHeader('Allow', ['GET'])
+      res.status(405).end(`Method ${method} Not Allowed`)
+  }
+}