Iterated with translations

app/[locale]/api/cart/route.ts

@@ -0,0 +1,75 @@
+import { cookies } from 'next/headers';
+import { NextRequest, NextResponse } from 'next/server';
+
+import { addToCart, removeFromCart, updateCart } from 'lib/shopify';
+import { isShopifyError } from 'lib/type-guards';
+
+function formatErrorMessage(err: Error): string {
+  return JSON.stringify(err, Object.getOwnPropertyNames(err));
+}
+
+export async function POST(req: NextRequest): Promise<Response> {
+  const cartId = cookies().get('cartId')?.value;
+  const { merchandiseId } = await req.json();
+
+  if (!cartId?.length || !merchandiseId?.length) {
+    return NextResponse.json({ error: 'Missing cartId or variantId' }, { status: 400 });
+  }
+  try {
+    await addToCart(cartId, [{ merchandiseId, quantity: 1 }]);
+    return NextResponse.json({ status: 204 });
+  } catch (e) {
+    if (isShopifyError(e)) {
+      return NextResponse.json({ message: formatErrorMessage(e.message) }, { status: e.status });
+    }
+
+    return NextResponse.json({ status: 500 });
+  }
+}
+
+export async function PUT(req: NextRequest): Promise<Response> {
+  const cartId = cookies().get('cartId')?.value;
+  const { variantId, quantity, lineId } = await req.json();
+
+  if (!cartId || !variantId || !quantity || !lineId) {
+    return NextResponse.json(
+      { error: 'Missing cartId, variantId, lineId, or quantity' },
+      { status: 400 }
+    );
+  }
+  try {
+    await updateCart(cartId, [
+      {
+        id: lineId,
+        merchandiseId: variantId,
+        quantity
+      }
+    ]);
+    return NextResponse.json({ status: 204 });
+  } catch (e) {
+    if (isShopifyError(e)) {
+      return NextResponse.json({ message: formatErrorMessage(e.message) }, { status: e.status });
+    }
+
+    return NextResponse.json({ status: 500 });
+  }
+}
+
+export async function DELETE(req: NextRequest): Promise<Response> {
+  const cartId = cookies().get('cartId')?.value;
+  const { lineId } = await req.json();
+
+  if (!cartId || !lineId) {
+    return NextResponse.json({ error: 'Missing cartId or lineId' }, { status: 400 });
+  }
+  try {
+    await removeFromCart(cartId, [lineId]);
+    return NextResponse.json({ status: 204 });
+  } catch (e) {
+    if (isShopifyError(e)) {
+      return NextResponse.json({ message: formatErrorMessage(e.message) }, { status: e.status });
+    }
+
+    return NextResponse.json({ status: 500 });
+  }
+}