Replaces Route Handlers with Server Actions (#1050)

components/cart/actions.ts

@@ -0,0 +1,57 @@
+'use server';
+
+import { addToCart, removeFromCart, updateCart } from 'lib/shopify';
+import { cookies } from 'next/headers';
+
+export const addItem = async (variantId: string | undefined): Promise<Error | undefined> => {
+  const cartId = cookies().get('cartId')?.value;
+
+  if (!cartId || !variantId) {
+    return new Error('Missing cartId or variantId');
+  }
+  try {
+    await addToCart(cartId, [{ merchandiseId: variantId, quantity: 1 }]);
+  } catch (e) {
+    return new Error('Error adding item', { cause: e });
+  }
+};
+
+export const removeItem = async (lineId: string): Promise<Error | undefined> => {
+  const cartId = cookies().get('cartId')?.value;
+
+  if (!cartId) {
+    return new Error('Missing cartId');
+  }
+  try {
+    await removeFromCart(cartId, [lineId]);
+  } catch (e) {
+    return new Error('Error removing item', { cause: e });
+  }
+};
+
+export const updateItemQuantity = async ({
+  lineId,
+  variantId,
+  quantity
+}: {
+  lineId: string;
+  variantId: string;
+  quantity: number;
+}): Promise<Error | undefined> => {
+  const cartId = cookies().get('cartId')?.value;
+
+  if (!cartId) {
+    return new Error('Missing cartId');
+  }
+  try {
+    await updateCart(cartId, [
+      {
+        id: lineId,
+        merchandiseId: variantId,
+        quantity
+      }
+    ]);
+  } catch (e) {
+    return new Error('Error updating item quantity', { cause: e });
+  }
+};