feat: add acquisition and pricing domain rules

2026-09-08 17:51:51 -04:00
parent d964b4f0ac
commit 8576c8f788
3 changed files with 177 additions and 0 deletions
@@ -0,0 +1,54 @@
+function requiredText(value, fieldName) {
+  if (typeof value !== 'string' || value.trim().length === 0) {
+    throw new Error(`${fieldName} is required.`);
+  }
+
+  return value.trim();
+}
+
+function requirePositiveMinorUnit(value, fieldName) {
+  if (!Number.isInteger(value) || value <= 0) {
+    throw new Error(`${fieldName} must be a positive integer minor unit.`);
+  }
+
+  return value;
+}
+
+export function createPricingObservation({
+  productId,
+  inventoryItemId,
+  providerId,
+  priceMinor,
+  currency = 'USD',
+  sourceIdentifier,
+  conditionId,
+  sourceUrl,
+  qualityScore,
+}) {
+  return {
+    productId: requiredText(productId, 'Product ID'),
+    inventoryItemId: requiredText(inventoryItemId, 'Inventory item ID'),
+    providerId: requiredText(providerId, 'Provider ID'),
+    priceMinor: requirePositiveMinorUnit(priceMinor, 'Observed price'),
+    currency: requiredText(currency, 'Currency'),
+    sourceIdentifier: requiredText(sourceIdentifier, 'Source identifier'),
+    conditionId: requiredText(conditionId, 'Condition ID'),
+    ...(typeof sourceUrl === 'string' && sourceUrl.trim().length > 0 ? { sourceUrl: sourceUrl.trim() } : {}),
+    ...(typeof qualityScore === 'number' ? { qualityScore } : {}),
+  };
+}
+
+export function calculateMedianPriceMinor(prices) {
+  if (!Array.isArray(prices) || prices.length === 0) {
+    throw new Error('At least one price is required.');
+  }
+
+  const sorted = [...prices].sort((left, right) => left - right);
+  const middle = Math.floor(sorted.length / 2);
+
+  if (sorted.length % 2 === 0) {
+    return Math.round((sorted[middle - 1] + sorted[middle]) / 2);
+  }
+
+  return sorted[middle];
+}