add car reservation feature

apps/api/src/routes/site.ts

@@ -8,6 +8,7 @@ import { applyPricingRules } from '../services/pricingRuleService'
 import { validateAndFlagLicense, validateLicense } from '../services/licenseValidationService'
 import * as paypal from '../services/paypalService'
 import { getMarketplaceHomepageContent } from '../services/platformContentService'
+import { getVehicleAvailabilitySummary } from '../services/vehicleAvailabilityService'
 
 const router = Router()
 
@@ -67,7 +68,18 @@ router.get('/:slug/vehicles', async (req, res, next) => {
       where: { companyId: company.id, isPublished: true },
       orderBy: { createdAt: 'desc' },
     })
-    res.json({ data: vehicles })
+    const enrichedVehicles = await Promise.all(
+      vehicles.map(async (vehicle) => {
+        const availability = await getVehicleAvailabilitySummary(vehicle.id)
+        return {
+          ...vehicle,
+          availability: availability.available,
+          availabilityStatus: availability.status,
+          nextAvailableAt: availability.nextAvailableAt,
+        }
+      }),
+    )
+    res.json({ data: enrichedVehicles })
   } catch (err) {
     if (isDatabaseUnavailableError(err)) return res.json({ data: [] })
     next(err)
@@ -79,14 +91,9 @@ router.get('/:slug/vehicles/:id', async (req, res, next) => {
     const company = await findCompanyBySlug(req.params.slug)
     const vehicle = await prisma.vehicle.findFirstOrThrow({
       where: { id: req.params.id, companyId: company.id, isPublished: true },
-      include: {
-        reservations: {
-          where: { status: { in: ['CONFIRMED', 'ACTIVE'] } },
-          select: { startDate: true, endDate: true, status: true },
-        },
-      },
     })
-    res.json({ data: vehicle })
+    const availability = await getVehicleAvailabilitySummary(vehicle.id)
+    res.json({ data: { ...vehicle, availability: availability.available, availabilityStatus: availability.status, nextAvailableAt: availability.nextAvailableAt } })
   } catch (err) {
     if (isDatabaseUnavailableError(err)) {
       return res.status(503).json({ error: 'database_unavailable', message: 'Vehicle details are temporarily unavailable', statusCode: 503 })
@@ -143,18 +150,10 @@ router.post('/:slug/availability', async (req, res, next) => {
       endDate: z.string().datetime(),
     }).parse(req.body)
 
-    const conflicts = await prisma.reservation.findMany({
-      where: {
-        companyId: company.id,
-        vehicleId,
-        status: { in: ['CONFIRMED', 'ACTIVE'] },
-        startDate: { lt: new Date(endDate) },
-        endDate: { gt: new Date(startDate) },
-      },
-      select: { startDate: true, endDate: true },
+    const availability = await getVehicleAvailabilitySummary(vehicleId, {
+      range: { startDate: new Date(startDate), endDate: new Date(endDate) },
     })
-
-    res.json({ data: { available: conflicts.length === 0, conflicts } })
+    res.json({ data: { available: availability.available, nextAvailableAt: availability.nextAvailableAt } })
   } catch (err) {
     if (isDatabaseUnavailableError(err)) {
       return res.status(503).json({ error: 'database_unavailable', message: 'Availability checks are temporarily unavailable', statusCode: 503 })
@@ -225,6 +224,23 @@ router.post('/:slug/book', async (req, res, next) => {
     const vehicle = await prisma.vehicle.findFirstOrThrow({
       where: { id: body.vehicleId, companyId: company.id, isPublished: true },
     })
+    const start = new Date(body.startDate)
+    const end = new Date(body.endDate)
+    if (end <= start) {
+      return res.status(400).json({ error: 'invalid_dates', message: 'End date must be after start date', statusCode: 400 })
+    }
+
+    const availability = await getVehicleAvailabilitySummary(vehicle.id, {
+      range: { startDate: start, endDate: end },
+    })
+    if (!availability.available) {
+      return res.status(409).json({
+        error: 'unavailable',
+        message: 'Vehicle is not available for the selected dates',
+        statusCode: 409,
+        nextAvailableAt: availability.nextAvailableAt?.toISOString() ?? null,
+      })
+    }
 
     const customer = await prisma.customer.upsert({
       where: { companyId_email: { companyId: company.id, email: body.email } },
@@ -251,9 +267,6 @@ router.post('/:slug/book', async (req, res, next) => {
         nationality: body.nationality ?? null,
       },
     })
-
-    const start = new Date(body.startDate)
-    const end = new Date(body.endDate)
     const totalDays = Math.max(1, Math.ceil((end.getTime() - start.getTime()) / 86400000))
     const baseAmount = vehicle.dailyRate * totalDays