fix notification and add billing page and contract

apps/api/src/routes/offers.ts

@@ -61,8 +61,17 @@ router.get('/:id', async (req, res, next) => {
 router.patch('/:id', async (req, res, next) => {
   try {
     const { vehicleIds, ...body } = offerSchema.partial().parse(req.body)
-    const offer = await prisma.offer.updateMany({ where: { id: req.params.id, companyId: req.companyId }, data: { ...body, validFrom: body.validFrom ? new Date(body.validFrom) : undefined, validUntil: body.validUntil ? new Date(body.validUntil) : undefined } })
-    if (offer.count === 0) return res.status(404).json({ error: 'not_found', message: 'Offer not found', statusCode: 404 })
+    const existing = await prisma.offer.findFirst({ where: { id: req.params.id, companyId: req.companyId } })
+    if (!existing) return res.status(404).json({ error: 'not_found', message: 'Offer not found', statusCode: 404 })
+    await prisma.$transaction(async (tx) => {
+      await tx.offer.update({ where: { id: req.params.id }, data: { ...body, validFrom: body.validFrom ? new Date(body.validFrom) : undefined, validUntil: body.validUntil ? new Date(body.validUntil) : undefined } })
+      if (vehicleIds !== undefined) {
+        await tx.offerVehicle.deleteMany({ where: { offerId: req.params.id } })
+        if (vehicleIds.length > 0) {
+          await tx.offerVehicle.createMany({ data: vehicleIds.map((vehicleId) => ({ offerId: req.params.id, vehicleId })) })
+        }
+      }
+    })
     const updated = await prisma.offer.findUniqueOrThrow({ where: { id: req.params.id }, include: { vehicles: true } })
     res.json({ data: updated })
   } catch (err) { next(err) }