Improve error handling

packages/commerce/src/printful.ts

@@ -1,5 +1,8 @@
 import type { Printful } from "./util/types";
-import { FetchError, type DeepPartial } from "./util/misc";
+import { type DeepPartial } from "./util/misc";
+
+const parsePayload = (res: Response): Promise<unknown> =>
+    res.json().catch(() => res.text().catch(() => undefined));
 
 type ClientOptions = {
     token: string;
@@ -11,6 +14,17 @@ type Credentials = {
     authHeaders: Record<string, string>;
 };
 
+export class PrintfulError extends Error {
+    constructor(
+        message: string,
+        public status: number,
+        public payload: unknown,
+    ) {
+        super(message);
+        this.name = "PrintfulError";
+    }
+}
+
 class VariantsClient {
     constructor(private creds: Credentials) { }
 
@@ -20,7 +34,7 @@ class VariantsClient {
             headers: this.creds.authHeaders,
         });
         if (res.status === 404 || res.status === 400) return;
-        if (!res.ok) throw new FetchError("Failed to get Printful variant", res);
+        if (!res.ok) throw new PrintfulError("Failed to get Printful variant", res.status, await parsePayload(res));
         const payload = (await res.json()) as Printful.Products.MetaDataSingle<Printful.Products.SyncVariant>;
         return payload.result;
     }
@@ -40,7 +54,7 @@ class ProductsClient {
                 method: "GET",
                 headers: this.creds.authHeaders,
             });
-            if (!res.ok) throw new FetchError("Failed to get all Printful products", res);
+            if (!res.ok) throw new PrintfulError("Failed to get all Printful products", res.status, await parsePayload(res));
             const payload = (await res.json()) as Printful.Products.MetaDataMulti<Printful.Products.SyncProduct>;
             allSyncProducts.push(...payload.result);
             offset = allSyncProducts.length;
@@ -55,7 +69,7 @@ class ProductsClient {
             headers: this.creds.authHeaders,
         });
         if (res.status === 404 || res.status === 400) return;
-        if (!res.ok) throw new FetchError("Failed to get Printful product", res);
+        if (!res.ok) throw new PrintfulError("Failed to get Printful product", res.status, await parsePayload(res));
         const payload = (await res.json()) as Printful.Products.MetaDataSingle<Printful.Products.Product>;
         return payload.result;
     }
@@ -69,7 +83,7 @@ class ProductsClient {
             },
             body: JSON.stringify(printfulProduct),
         });
-        if (!res.ok) throw new FetchError("Failed to update Printful product", res);
+        if (!res.ok) throw new PrintfulError("Failed to update Printful product", res.status, await parsePayload(res));
     }
 }
 
@@ -85,7 +99,7 @@ class OrdersClient {
             },
             body: JSON.stringify(printfulOrder),
         });
-        if (!res.ok) throw new FetchError("Failed to create printful order", res);
+        if (!res.ok) throw new PrintfulError("Failed to create Printful order", res.status, await parsePayload(res));
     }
 
     async getAll(offset = 0): Promise<Printful.Orders.Order[]> {
@@ -95,7 +109,7 @@ class OrdersClient {
                 method: "GET",
                 headers: this.creds.authHeaders,
             });
-            if (!res.ok) throw new FetchError("Failed to get all Printful orders", res);
+            if (!res.ok) throw new PrintfulError("Failed to get all Printful orders", res.status, await parsePayload(res));
             const payload = (await res.json()) as Printful.Products.MetaDataMulti<Printful.Orders.Order>;
             allPrintfulOrders.push(...payload.result);
             offset = allPrintfulOrders.length;