wallet print on json deseriliaztion error and batch invalidation of proofs (#430)

cashu/wallet/cli/cli.py

@@ -576,7 +576,9 @@ async def burn(ctx: Context, token: str, all: bool, force: bool, delete: str):
     if delete:
         await wallet.invalidate(proofs)
     else:
-        await wallet.invalidate(proofs, check_spendable=True)
+        # batch check proofs
+        for _proofs in [proofs[i : i + 100] for i in range(0, len(proofs), 100)]:
+            await wallet.invalidate(_proofs, check_spendable=True)
     print_balance(ctx)
 
 

cashu/wallet/wallet.py

@@ -157,7 +157,12 @@ class LedgerAPI(LedgerAPIDeprecated, object):
         Raises:
             Exception: if the response contains an error
         """
-        resp_dict = resp.json()
+        try:
+            resp_dict = resp.json()
+        except json.JSONDecodeError:
+            # if we can't decode the response, raise for status
+            resp.raise_for_status()
+            return
         if "detail" in resp_dict:
             logger.trace(f"Error from mint: {resp_dict}")
             error_message = f"Mint Error: {resp_dict['detail']}"