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src/app/api/medusa/products/route.ts

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+import { NextRequest, NextResponse } from 'next/server'
+
+// Medusa v2 store API requires region_id to return products with pricing context.
+// Without it, GET /store/products returns {products: []} even for published products.
+// Cache in module scope — regions don't change between requests.
+let cachedRegionId: string | null = null
+
+async function getRegionId(backendUrl: string, publishableKey: string): Promise<string | null> {
+  if (cachedRegionId) return cachedRegionId
+  // Retry up to 3 times — Medusa may be slow on cold start
+  for (let attempt = 0; attempt < 3; attempt++) {
+    try {
+      const res = await fetch(`${backendUrl}/store/regions?limit=1`, {
+        headers: { 'x-publishable-api-key': publishableKey },
+        cache: 'no-store',
+        signal: AbortSignal.timeout(10000),
+      })
+      if (!res.ok) continue  // 5xx during cold start — retry
+      const data = await res.json()
+      const id = data.regions?.[0]?.id ?? null
+      if (id) { cachedRegionId = id; return id }
+    } catch { /* timeout or network error — retry */ }
+  }
+  return null
+}
+
+export async function GET(request: NextRequest) {
+  const { searchParams } = new URL(request.url)
+  // Sanitise limit: reject non-numeric values (e.g. "[object Object]") and clamp 1–100.
+  const rawLimit = searchParams.get('limit') || '12'
+  const parsedLimit = parseInt(rawLimit, 10)
+  const limit = isNaN(parsedLimit) ? 12 : Math.min(Math.max(parsedLimit, 1), 100)
+  const categoryId = searchParams.get('categoryId') || undefined
+
+  // Service-type routing: NEXT_PUBLIC_MEDUSA_SERVICE_TYPE (from .env.local) selects the correct
+  // internal Medusa container. Each container is on a different Docker DNS name + same internal port.
+  const serviceType = process.env.NEXT_PUBLIC_MEDUSA_SERVICE_TYPE || 'ecommerce'
+  const internalUrlMap: Record<string, string> = {
+    ecommerce:  process.env.VULA_ECOMMERCE_BACKEND_URL  || 'http://vula-ecommerce:9000',
+    hotel:      process.env.VULA_HOTEL_BACKEND_URL      || 'http://vula-hotel:9000',
+    restaurant: process.env.VULA_RESTAURANT_BACKEND_URL || 'http://vula-restaurant:9000',
+    services:   process.env.VULA_SERVICES_BACKEND_URL   || 'http://vula-services:9000',
+  }
+  const backendUrl = internalUrlMap[serviceType] || internalUrlMap.ecommerce
+  const publishableKey = process.env.NEXT_PUBLIC_MEDUSA_PUBLISHABLE_KEY || ''
+
+  try {
+    const params = new URLSearchParams({ limit: String(limit) })
+    if (categoryId) params.set('category_id[]', categoryId)
+    const regionId = await getRegionId(backendUrl, publishableKey)
+    if (regionId) {
+      // With region: get calculated_price (tax-aware) + raw prices fallback + categories for filter tabs
+      params.set('region_id', regionId)
+      params.set('fields', '+variants.calculated_price,+variants.prices.amount,+variants.prices.currency_code,+categories')
+    } else {
+      // No region yet: request raw prices so price display still works
+      params.set('fields', '+variants.prices.amount,+variants.prices.currency_code')
+    }
+    const response = await fetch(
+      `${backendUrl}/store/products?${params}`,
+      {
+        headers: { 'x-publishable-api-key': publishableKey },
+        cache: 'no-store',
+        signal: AbortSignal.timeout(10000),
+      }
+    )
+    if (!response.ok) {
+      return NextResponse.json({ products: [] })
+    }
+    const data = await response.json()
+    return NextResponse.json(data)
+  } catch {
+    return NextResponse.json({ products: [] })
+  }
+}