feat: KitchenStock light UI, Gemma 31B AI, supermarket store filters & 130+ vegan products

src/lib/formatting/step-size.ts

@@ -0,0 +1,43 @@
+export const GRAM_SLIDER_STEPS = [50, 100, 250, 500, 1000];
+
+export function isGramUnit(packageUnit: string): boolean {
+  const u = (packageUnit || '').toLowerCase().trim();
+  return u === 'gramm' || u === 'g';
+}
+
+export function getProductStepSize(
+  packageUnit: string,
+  categoryName?: string | null,
+  productName?: string | null
+): { step: number; label: string } {
+  const unit = (packageUnit || '').toLowerCase().trim();
+  const name = (productName || '').toLowerCase().trim();
+  const cat = (categoryName || '').toLowerCase().trim();
+
+  if (unit === 'gramm' || unit === 'g') {
+    const isSpice =
+      cat.includes('gewürz') ||
+      /paprika|hefe|gewürz|salz|pfeffer|curry|zimt|oregano|basilikum|thymian|knoblauch|chili|kümmel|rosmarin|muskat|kurkuma/i.test(
+        name
+      );
+
+    if (isSpice) {
+      return { step: 50, label: '50g' };
+    }
+    return { step: 250, label: '250g' };
+  }
+
+  if (unit === 'kilogramm' || unit === 'kg') {
+    return { step: 1, label: '1kg' };
+  }
+
+  if (unit === 'liter' || unit === 'l') {
+    return { step: 1, label: '1l' };
+  }
+
+  if (unit === 'milliliter' || unit === 'ml') {
+    return { step: 250, label: '250ml' };
+  }
+
+  return { step: 1, label: '1' };
+}