Detect pre-order/coming soon products as out of stock

- AI verification now checks if product is purchasable RIGHT NOW
- AI returns stockStatus field for pre-order/coming soon detection
- Enhanced generic stock status detection with pre-order phrases:
  - Coming soon, available soon, releases on, pre-order, etc.
  - Notify me when available, join waitlist, etc.
- Pre-order buttons no longer count as Add to Cart
- Fixes issue where unreleased products showed as in stock

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/src/services/ai-extractor.ts

@@ -19,28 +19,39 @@ export interface AIVerificationResult {
   confidence: number;
   suggestedPrice: ParsedPrice | null;
   reason: string;
+  stockStatus?: StockStatus;
 }
 
-const VERIFICATION_PROMPT = `You are a price verification assistant. I scraped a product page and found a price. Please verify if this price is correct.
+const VERIFICATION_PROMPT = `You are a price and availability verification assistant. I scraped a product page and found a price. Please verify if this price is correct AND if the product is currently available for purchase.
 
 Scraped Price: $SCRAPED_PRICE$ $CURRENCY$
 
 Analyze the HTML content below and determine:
 1. Is the scraped price the correct CURRENT/SALE price for the main product?
 2. If not, what is the correct price?
+3. Is this product currently available for purchase RIGHT NOW?
 
-Common issues to watch for:
+Common price issues to watch for:
 - Scraped price might be a "savings" amount (e.g., "Save $189.99")
 - Scraped price might be from a bundle/combo deal section
 - Scraped price might be shipping cost or add-on price
 - Scraped price might be the original/crossed-out price instead of the sale price
 
+Common availability issues to watch for:
+- Product shows "Coming Soon" or "Available [future date]" - NOT in stock
+- Product shows "Pre-order" or "Reserve now" - NOT in stock
+- Product shows "Notify me when available" or "Sign up for alerts" - NOT in stock
+- Product shows "Out of stock" or "Sold out" - NOT in stock
+- Product has no "Add to Cart" button but shows a future release date - NOT in stock
+- Product CAN be added to cart and purchased today - IN stock
+
 Return a JSON object with:
 - isCorrect: boolean - true if the scraped price is correct
 - confidence: number from 0 to 1
 - suggestedPrice: the correct price as a number (or null if scraped price is correct)
 - suggestedCurrency: currency code if suggesting a different price
-- reason: brief explanation of your decision
+- stockStatus: "in_stock", "out_of_stock", or "unknown" - based on whether the product can be purchased RIGHT NOW
+- reason: brief explanation of your decision (mention both price and availability)
 
 Only return valid JSON, no explanation text outside the JSON.
 
@@ -314,6 +325,7 @@ function parseVerificationResponse(
     confidence: 0.5,
     suggestedPrice: null,
     reason: 'Could not parse AI response',
+    stockStatus: 'unknown',
   };
 
   let jsonStr = responseText.trim();
@@ -348,11 +360,23 @@ function parseVerificationResponse(
       }
     }
 
+    // Parse stock status from AI response
+    let stockStatus: StockStatus = 'unknown';
+    if (data.stockStatus) {
+      const status = data.stockStatus.toLowerCase().replace(/[^a-z_]/g, '');
+      if (status === 'in_stock' || status === 'instock') {
+        stockStatus = 'in_stock';
+      } else if (status === 'out_of_stock' || status === 'outofstock') {
+        stockStatus = 'out_of_stock';
+      }
+    }
+
     return {
       isCorrect: data.isCorrect ?? true,
       confidence: data.confidence ?? 0.5,
       suggestedPrice,
       reason: data.reason || 'No reason provided',
+      stockStatus,
     };
   } catch (error) {
     console.error('[AI Verify] Failed to parse response:', responseText);

backend/src/services/scraper.ts

@@ -846,6 +846,15 @@ export async function scrapeProduct(url: string, userId?: number): Promise<Scrap
             console.log(`[AI Verify] Price might be incorrect but no confident suggestion: ${verifyResult.reason}`);
             // Don't set aiStatus if verification was inconclusive
           }
+
+          // Use AI-detected stock status if we don't have a definitive one yet
+          // or if AI says it's out of stock (AI can catch pre-order/coming soon)
+          if (verifyResult.stockStatus && verifyResult.stockStatus !== 'unknown') {
+            if (result.stockStatus === 'unknown' || verifyResult.stockStatus === 'out_of_stock') {
+              console.log(`[AI Verify] Stock status: ${verifyResult.stockStatus} (was: ${result.stockStatus})`);
+              result.stockStatus = verifyResult.stockStatus;
+            }
+          }
         }
       } catch (verifyError) {
         console.error(`[AI Verify] Verification failed for ${url}:`, verifyError);
@@ -1060,7 +1069,8 @@ function extractGenericStockStatus($: CheerioAPI): StockStatus {
   const availability = $('[itemprop="availability"]').attr('content') ||
                        $('[itemprop="availability"]').attr('href') || '';
   if (availability.toLowerCase().includes('outofstock') ||
-      availability.toLowerCase().includes('discontinued')) {
+      availability.toLowerCase().includes('discontinued') ||
+      availability.toLowerCase().includes('preorder')) {
     return 'out_of_stock';
   }
   if (availability.toLowerCase().includes('instock') ||
@@ -1068,14 +1078,96 @@ function extractGenericStockStatus($: CheerioAPI): StockStatus {
     return 'in_stock';
   }
 
-  // Check for add to cart button - strong indicator of in stock
+  // Be conservative - only check main product area text, not entire body
-  const hasAddToCart = $('button[class*="add-to-cart" i]').length > 0 ||
+  // to avoid false positives from sidebar recommendations, etc.
-                       $('button[id*="add-to-cart" i]').length > 0 ||
+  const mainContent = $('main, [role="main"], #main, .main-content, .product-detail, .pdp-main').text().toLowerCase();
-                       $('[data-testid*="add-to-cart" i]').length > 0 ||
+  const textToCheck = mainContent || $('body').text().toLowerCase().slice(0, 5000);
-                       $('button:contains("Add to Cart")').length > 0 ||
-                       $('input[value*="Add to Cart" i]').length > 0;
 
-  if (hasAddToCart) {
+  // Check for pre-order / coming soon indicators BEFORE checking add to cart
+  // Some sites show a "Pre-order" button that looks like add to cart
+  const preOrderComingSoonPhrases = [
+    'coming soon',
+    'coming in',
+    'available soon',
+    'available in',
+    'arriving soon',
+    'arriving in',
+    'releases on',
+    'release date',
+    'expected release',
+    'launches on',
+    'launching soon',
+    'pre-order',
+    'preorder',
+    'pre order',
+    'notify me when available',
+    'notify when available',
+    'sign up to be notified',
+    'sign up for availability',
+    'email me when available',
+    'get notified when',
+    'join the waitlist',
+    'join waitlist',
+    'not yet released',
+    'not yet available',
+    'coming this',
+    'coming next',
+    'available starting',
+  ];
+
+  for (const phrase of preOrderComingSoonPhrases) {
+    if (textToCheck.includes(phrase)) {
+      // Double check it's not just a section about pre-orders in general
+      // by looking for the phrase near price/product context
+      const phraseIndex = textToCheck.indexOf(phrase);
+      const contextStart = Math.max(0, phraseIndex - 200);
+      const contextEnd = Math.min(textToCheck.length, phraseIndex + 200);
+      const context = textToCheck.substring(contextStart, contextEnd);
+
+      // If the context mentions price, buy, cart, or product, it's likely about this product
+      if (context.includes('$') || context.includes('price') ||
+          context.includes('buy') || context.includes('cart') ||
+          context.includes('order') || context.includes('purchase')) {
+        return 'out_of_stock';
+      }
+    }
+  }
+
+  // Check for explicit pre-order/coming soon elements
+  const hasPreOrderBadge = $('[class*="pre-order" i]').length > 0 ||
+                           $('[class*="preorder" i]').length > 0 ||
+                           $('[class*="coming-soon" i]').length > 0 ||
+                           $('[class*="comingsoon" i]').length > 0 ||
+                           $('[data-testid*="pre-order" i]').length > 0 ||
+                           $('[data-testid*="coming-soon" i]').length > 0 ||
+                           $('button:contains("Pre-order")').length > 0 ||
+                           $('button:contains("Preorder")').length > 0 ||
+                           $('button:contains("Notify Me")').length > 0;
+
+  if (hasPreOrderBadge) {
+    return 'out_of_stock';
+  }
+
+  // Check for add to cart button - strong indicator of in stock
+  // But make sure it's not a pre-order button
+  const addToCartButtons = $('button[class*="add-to-cart" i], button[id*="add-to-cart" i], [data-testid*="add-to-cart" i], button:contains("Add to Cart"), input[value*="Add to Cart" i]');
+  let hasRealAddToCart = false;
+
+  addToCartButtons.each((_, el) => {
+    const buttonText = $(el).text().toLowerCase();
+    const buttonClass = $(el).attr('class')?.toLowerCase() || '';
+    // Make sure it's not a pre-order or notify button
+    if (!buttonText.includes('pre-order') &&
+        !buttonText.includes('preorder') &&
+        !buttonText.includes('notify') &&
+        !buttonText.includes('waitlist') &&
+        !buttonClass.includes('pre-order') &&
+        !buttonClass.includes('preorder')) {
+      hasRealAddToCart = true;
+    }
+  });
+
+  if (hasRealAddToCart) {
     return 'in_stock';
   }
 
@@ -1088,11 +1180,6 @@ function extractGenericStockStatus($: CheerioAPI): StockStatus {
     return 'out_of_stock';
   }
 
-  // Be conservative - only check main product area text, not entire body
-  // to avoid false positives from sidebar recommendations, etc.
-  const mainContent = $('main, [role="main"], #main, .main-content, .product-detail, .pdp-main').text().toLowerCase();
-  const textToCheck = mainContent || $('body').text().toLowerCase().slice(0, 5000);
-
   // Strong out-of-stock phrases (must be exact matches to avoid false positives)
   const strongOutOfStockPhrases = [
     'this item is out of stock',