fix bug

src/utils/productEditorPrice.ts

@@ -56,12 +56,24 @@ export type ProductEditorPricePreview =
   | { status: 'ready'; amount: number; source: string }
   | { status: 'empty'; message: string }
 
+function resolveStoredFallbackPrice(
+  storedPrice: number | null | undefined,
+  useLastPriceIfZero: boolean | undefined
+): number {
+  if (!useLastPriceIfZero) {
+    return 0
+  }
+
+  return Number(storedPrice) || 0
+}
+
 export function computeProductEditorPricePreview(input: {
   form: {
     group_type?: string
     price?: number | null
     reading_method?: string | null
     price_offset_percent?: number | null
+    use_last_price_if_zero?: boolean | null
   }
   methodOption: string
   meltedPriceOption: MeltedPriceSource
@@ -99,11 +111,17 @@ export function computeProductEditorPricePreview(input: {
       return { status: 'empty', message: '' }
     }
     const { base, profit } = normalizeReferenceBase(entry)
-    return {
-      status: 'ready',
-      amount: adjustedProductPrice(base, profit, offsetPercent),
-      source: entry.name
+    const liveAmount = adjustedProductPrice(base, profit, offsetPercent)
+    if (liveAmount > 0) {
+      return { status: 'ready', amount: liveAmount, source: entry.name }
     }
+    const fallback = resolveStoredFallbackPrice(
+      input.form.price,
+      input.form.use_last_price_if_zero ?? false
+    )
+    return fallback > 0
+      ? { status: 'ready', amount: fallback, source: 'آخرین قیمت ذخیره‌شده' }
+      : { status: 'empty', message: 'قیمت provider صفر است' }
   }
 
   if (input.methodOption === '1') {
@@ -121,9 +139,15 @@ export function computeProductEditorPricePreview(input: {
     return { status: 'empty', message: '' }
   }
   const { base, profit } = normalizeReferenceBase(entry)
-  return {
-    status: 'ready',
-    amount: adjustedProductPrice(base, profit, offsetPercent),
-    source: entry.name
+  const liveAmount = adjustedProductPrice(base, profit, offsetPercent)
+  if (liveAmount > 0) {
+    return { status: 'ready', amount: liveAmount, source: entry.name }
   }
+  const fallback = resolveStoredFallbackPrice(
+    input.form.price,
+    input.form.use_last_price_if_zero ?? false
+  )
+  return fallback > 0
+    ? { status: 'ready', amount: fallback, source: 'آخرین قیمت ذخیره‌شده' }
+    : { status: 'empty', message: 'قیمت provider صفر است' }
 }