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Fix anchor price selection - prioritize anchor over method

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The previous logic checked preferred method first, which could select
a wrong price even when anchor price was available. Now:

1. PRIORITY 1: Anchor price - if user confirmed a price, find closest
   match (within 10% tolerance) across ALL candidates
2. PRIORITY 2: Preferred method - only used if no anchor match found
3. PRIORITY 3: Consensus voting

Also added debug logging to trace anchor price saving and retrieval.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
clucraft 2026-01-24 19:01:15 -05:00
parent 389915a6ec
commit 8131017f3a
3 changed files with 31 additions and 29 deletions
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4
backend/src/services/scheduler.ts
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@ -29,6 +29,8 @@ async function checkPrices(): Promise<void> {
// Get anchor price for variant products (the price the user confirmed)
const anchorPrice = await productQueries.getAnchorPrice(product.id);
console.log(`[Scheduler] Product ${product.id} - preferredMethod: ${preferredMethod}, anchorPrice: ${anchorPrice}`);
// Use voting scraper with preferred method and anchor price if available
const scrapedData = await scrapeProductWithVoting(
product.url,
@ -37,6 +39,8 @@ async function checkPrices(): Promise<void> {
anchorPrice || undefined
);
console.log(`[Scheduler] Product ${product.id} - scraped price: ${scrapedData.price?.price}, candidates: ${scrapedData.priceCandidates.map(c => `${c.price}(${c.method})`).join(', ')}`);
// Check for back-in-stock notification
const wasOutOfStock = product.stock_status === 'out_of_stock';
const nowInStock = scrapedData.stockStatus === 'in_stock';