feat: parse Facebook marketplace item details and test exports

src/facebook.ts

@@ -830,6 +830,110 @@ function parseFacebookAds(ads: FacebookAdNode[]): ListingDetails[] {
 	return results;
 }
 
+/**
+   Parse Facebook marketplace item details into ListingDetails format
+   Updated for 2026 GroupCommerceProductItem structure
+*/
+function parseFacebookItem(item: FacebookMarketplaceItem): ListingDetails | null {
+	try {
+		const title = item.marketplace_listing_title || item.custom_title;
+		if (!title) return null;
+
+		const url = `https://www.facebook.com/marketplace/item/${item.id}`;
+
+		// Extract price information
+		let cents = 0;
+		let currency = "CAD"; // Default
+		let amountFormatted = item.formatted_price?.text || "FREE";
+
+		if (item.listing_price) {
+			currency = item.listing_price.currency || "CAD";
+			if (item.listing_price.amount && item.listing_price.amount !== "0.00") {
+				const amount = parseFloat(item.listing_price.amount);
+				if (!isNaN(amount)) {
+					cents = Math.round(amount * 100);
+					amountFormatted = item.formatted_price?.text || formatCentsToCurrency(cents);
+				}
+			}
+		}
+
+		// Extract description
+		const description = item.redacted_description?.text;
+
+		// Extract location
+		const address = item.location_text?.text || null;
+
+		// Extract seller information
+		const seller = item.marketplace_listing_seller ? {
+			name: item.marketplace_listing_seller.name,
+			id: item.marketplace_listing_seller.id
+		} : undefined;
+
+		// Determine listing status
+		let listingStatus: string | undefined;
+		if (item.is_sold) {
+			listingStatus = "SOLD";
+		} else if (item.is_pending) {
+			listingStatus = "PENDING";
+		} else if (item.is_live) {
+			listingStatus = "ACTIVE";
+		} else if (item.is_hidden) {
+			listingStatus = "HIDDEN";
+		}
+
+		// Format creation date
+		const creationDate = item.creation_time
+			? new Date(item.creation_time * 1000).toISOString()
+			: undefined;
+
+		// Determine listing type based on category or vehicle data
+		let listingType = "item";
+		if (item.vehicle_make_display_name || item.vehicle_odometer_data) {
+			listingType = "vehicle";
+		} else if (item.marketplace_listing_category_id) {
+			// Could map category IDs to types, but keeping simple for now
+			listingType = "item";
+		}
+
+		const listingDetails: ListingDetails = {
+			url,
+			title,
+			description,
+			listingPrice: {
+				amountFormatted,
+				cents,
+				currency,
+			},
+			address,
+			creationDate,
+			listingType,
+			listingStatus,
+			categoryId: item.marketplace_listing_category_id,
+			seller,
+			deliveryTypes: item.delivery_types,
+		};
+
+		return listingDetails;
+	} catch (error) {
+		console.warn(`Failed to parse Facebook item ${item.id}:`, error);
+		return null;
+	}
+}
+
+// ----------------------------- Exports for Testing -----------------------------
+// Export internal functions for comprehensive testing
+export {
+	extractFacebookItemData,
+	extractFacebookMarketplaceData,
+	parseFacebookItem,
+	parseFacebookAds,
+	formatCentsToCurrency,
+	loadFacebookCookies,
+	formatCookiesForHeader,
+	parseFacebookCookieString,
+	ensureFacebookCookies,
+};
+
 // ----------------------------- Main -----------------------------
 
 export default async function fetchFacebookItems(