bank api now return typed errors for documented errors

1 files changed, 31 insertions, 0 deletions

diff --git a/packages/taler-util/src/http-common.ts b/packages/taler-util/src/http-common.ts
index da2fbb9da..817f2367f 100644
--- a/packages/taler-util/src/http-common.ts
+++ b/packages/taler-util/src/http-common.ts
@@ -180,6 +180,37 @@ export async function readTalerErrorResponse(
   return errJson;
 }
 
+export async function readErrorResponse(
+  httpResponse: HttpResponse,
+): Promise<{ detail: TalerErrorDetail | undefined, body: string }> {
+  let errString: string;
+  try {
+    errString = await httpResponse.text();
+  } catch (e: any) {
+    throw TalerError.fromDetail(
+      TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
+      {
+        requestUrl: httpResponse.requestUrl,
+        requestMethod: httpResponse.requestMethod,
+        httpStatusCode: httpResponse.status,
+        validationError: e.toString(),
+      },
+      "Couldn't parse JSON format from error response",
+    );
+  }
+  let errJson;
+  try {
+    errJson = JSON.parse(errString)
+  } catch (e) {
+    errJson = undefined
+  }
+
+  const talerErrorCode = errJson && errJson.code;
+  if (typeof talerErrorCode === "number") {
+    return { detail: errJson, body: errString }
+  }
+  return { detail: undefined, body: errString };
+}
 export async function readUnexpectedResponseDetails(
   httpResponse: HttpResponse,
 ): Promise<TalerErrorDetail> {