Add recipes, images, AI photo ID, barcode scanning & ingredient matching

- Fuzzy ingredient matching for bar inventory against recipes
- AI photo identification API for bottles/labels (drink + bar context)
- Barcode scanner with photo toggle for My Bar
- Barcode scan + photo ID buttons on Add Drink form
- Auto-pull product images from Open Food Facts barcode lookup
- Recipes section on drink detail pages with bar availability
- Dedicated Recipes page in sidebar navigation
- Bar item image support (schema, upload, display)
- Drink detail image upload component
- MinIO image proxy through Next.js rewrites (fixes broken image links)
- Improved category mapping (energy drinks → Mixers, not Spirits)
- Re-process saved recipe ingredients against current bar inventory

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/api/bar/barcode-lookup/route.ts

@@ -0,0 +1,177 @@
+import { NextResponse } from "next/server"
+import { auth } from "@/lib/auth"
+import { prisma } from "@/lib/prisma"
+import { decrypt } from "@/lib/encryption"
+import { createProvider } from "@/lib/ai/provider-factory"
+import { rateLimit } from "@/lib/rate-limit"
+import { z } from "zod"
+
+const barcodeLookupSchema = z.object({
+  barcode: z.string().min(8).max(20).regex(/^\d+$/, "Invalid barcode format"),
+})
+
+function mapOffCategoryToBarCategory(tags: string[]): string {
+  const joined = (tags || []).join(",").toLowerCase()
+  if (/spirits|whisk|bourbon|vodka|rum|gin|tequila|brandy|cognac|mezcal|scotch/.test(joined)) return "SPIRITS"
+  if (/liqueur|amaretto|kahlua|baileys|triple.sec|schnapps|chartreuse|campari|aperol/.test(joined)) return "LIQUEURS"
+  if (/juice|soda|tonic|cola|syrup|water|mixer|ginger|lemon|lime|cranberry|club/.test(joined)) return "MIXERS"
+  if (/bitter/.test(joined)) return "BITTERS"
+  return "SPIRITS"
+}
+
+function mapOffCategoryToDrinkType(tags: string[]): string | null {
+  const joined = (tags || []).join(",").toLowerCase()
+  if (/beer|ale|lager|stout|porter|pilsner|ipa|wheat.beer|craft.beer/.test(joined)) return "BEER"
+  if (/wine|champagne|prosecco|cava|merlot|cabernet|chardonnay|pinot|rosé|rose/.test(joined)) return "WINE"
+  if (/cocktail/.test(joined)) return "COCKTAIL"
+  if (/spirits|whisk|bourbon|vodka|rum|gin|tequila|brandy|cognac|mezcal|scotch/.test(joined)) return "SPIRIT"
+  return null
+}
+
+async function lookupOpenFoodFacts(barcode: string) {
+  try {
+    const res = await fetch(
+      `https://world.openfoodfacts.org/api/v2/product/${barcode}.json`,
+      { signal: AbortSignal.timeout(8000) }
+    )
+    if (!res.ok) return null
+    const data = await res.json()
+    if (data.status !== 1 || !data.product) return null
+
+    const product = data.product
+    const name = product.product_name || product.product_name_en || null
+    if (!name) return null
+
+    // Extract product image URL
+    const imageUrl = product.image_url || product.image_front_url || product.image_front_small_url || null
+
+    // Extract ABV from alcohol_100g nutrient or nutriments
+    let abv: number | null = null
+    if (product.nutriments?.alcohol_100g) {
+      abv = parseFloat(product.nutriments.alcohol_100g)
+      if (isNaN(abv)) abv = null
+    }
+
+    // Determine drink type from categories
+    const drinkType = mapOffCategoryToDrinkType(product.categories_tags || [])
+
+    return {
+      name,
+      brand: product.brands || null,
+      category: mapOffCategoryToBarCategory(product.categories_tags || []),
+      imageUrl,
+      abv,
+      type: drinkType,
+      subType: null as string | null,
+    }
+  } catch {
+    return null
+  }
+}
+
+async function lookupViaAI(barcode: string, userId: string) {
+  try {
+    const apiKeyRecord = await prisma.userApiKey.findFirst({
+      where: { userId, isActive: true },
+    })
+    if (!apiKeyRecord) return null
+
+    const apiKey = decrypt(apiKeyRecord.encryptedKey, apiKeyRecord.iv)
+    const provider = createProvider(apiKeyRecord.provider, apiKey)
+
+    const systemPrompt = `You are a product identification expert. Given a UPC/EAN barcode number, identify the product — especially alcoholic beverages, spirits, mixers, and bar supplies.
+
+Return ONLY a valid JSON object with these fields:
+- "name" (string): The product name (e.g., "Maker's Mark Bourbon")
+- "brand" (string or null): The brand name
+- "category" (string): One of "SPIRITS", "LIQUEURS", "MIXERS", "BITTERS", "GARNISHES", or "TOOLS"
+
+If you cannot confidently identify the barcode, return: { "name": null }
+Do not include any text before or after the JSON.`
+
+    const response = await provider.sendTextRequest(
+      systemPrompt,
+      `Identify the product with UPC/EAN barcode: ${barcode}`
+    )
+
+    const match = response.match(/\{[\s\S]*\}/)
+    if (!match) return null
+    const parsed = JSON.parse(match[0])
+    if (!parsed.name) return null
+
+    return {
+      name: parsed.name as string,
+      brand: (parsed.brand as string) || null,
+      category: parsed.category || "SPIRITS",
+    }
+  } catch {
+    return null
+  }
+}
+
+export async function POST(request: Request) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
+  }
+
+  const { success: withinLimit } = rateLimit(`barcode-lookup:${session.user.id}`, 10, 60000)
+  if (!withinLimit) {
+    return NextResponse.json(
+      { error: "Too many requests. Please wait a moment." },
+      { status: 429 }
+    )
+  }
+
+  try {
+    const body = await request.json()
+    const parsed = barcodeLookupSchema.safeParse(body)
+    if (!parsed.success) {
+      return NextResponse.json({ error: "Invalid barcode format" }, { status: 400 })
+    }
+
+    const { barcode } = parsed.data
+
+    // Check if user already has this barcode in their bar
+    const existing = await prisma.barItem.findFirst({
+      where: { userId: session.user.id, barcode },
+    })
+    if (existing) {
+      return NextResponse.json({
+        barcode,
+        name: existing.name,
+        brand: null,
+        category: existing.category,
+        source: "existing",
+        existingId: existing.id,
+      })
+    }
+
+    // Try Open Food Facts first
+    const offResult = await lookupOpenFoodFacts(barcode)
+    if (offResult) {
+      return NextResponse.json({ ...offResult, barcode, source: "openfoodfacts" })
+    }
+
+    // AI fallback
+    const aiResult = await lookupViaAI(barcode, session.user.id)
+    if (aiResult) {
+      return NextResponse.json({ ...aiResult, barcode, source: "ai" })
+    }
+
+    // Not found
+    return NextResponse.json({
+      barcode,
+      name: null,
+      brand: null,
+      category: null,
+      source: "not_found",
+    })
+  } catch (error) {
+    console.error("Barcode lookup error:", error)
+    return NextResponse.json(
+      { error: "Failed to look up barcode" },
+      { status: 500 }
+    )
+  }
+}