new ui4

src/views/shop.rs

@@ -22,6 +22,14 @@ pub fn product_card(
     category_name: Option<String>,
     cur: &Currency,
 ) -> Value {
+    // Whole-percent discount for the card's sale badge (e.g. "−15 %"). Only
+    // meaningful when the resolved price is actually reduced below the regular.
+    let percent_off = if priced.is_reduced() && priced.regular_cents > priced.price_cents {
+        (((priced.regular_cents - priced.price_cents) as f64 / priced.regular_cents as f64) * 100.0)
+            .round() as i64
+    } else {
+        0
+    };
     json!({
         "id": product.id,
         "variant_id": representative.id,
@@ -31,6 +39,7 @@ pub fn product_card(
         "short_description": product.short_description,
         "price": cur.format(priced.price_cents),
         "on_sale": priced.is_reduced(),
+        "percent_off": percent_off,
         "is_business": priced.is_business,
         "regular_price": cur.format(priced.regular_cents),
         "sku": representative.sku,