fix

clientcontroller/cosmwasm/consumer.go

@@ -298,33 +298,22 @@ func (wc *CosmwasmConsumerController) QueryLastPublicRandCommit(fpPk *btcec.Publ
 		return nil, fmt.Errorf("failed to query smart contract state: %w", err)
 	}
 
-	// Define a response struct
-	var commits []PubRandCommitResponse
-	err = json.Unmarshal(dataFromContract.Data, &commits)
-	if err != nil {
-		return nil, fmt.Errorf("failed to unmarshal response: %w", err)
-	}
-
-	if len(commits) == 0 {
+	if len(dataFromContract.Data) == 0 {
 		// expected when there is no PR commit at all
-		// `get_pub_rand_commit`'s return type is Vec<PubRandCommit> and it can be
-		// empty vector if no results found
 		return nil, nil
 	}
 
-	if len(commits) > 1 {
-		return nil, fmt.Errorf("expected length to be 1, but got :%d", len(commits))
+	// Define a response struct
+	var commitResp PubRandCommitResponse
+	err = json.Unmarshal(dataFromContract.Data, &commitResp)
+	if err != nil {
+		return nil, fmt.Errorf("failed to unmarshal response: %w", err)
 	}
 
-	// Convert the response to the expected map format
-	var commit *fptypes.PubRandCommit = nil
-	for _, commitRes := range commits {
-		commitCopy := commitRes // create a copy to avoid referencing the loop variable
-		commit = &fptypes.PubRandCommit{
-			StartHeight: commitCopy.StartHeight,
-			NumPubRand:  commitCopy.NumPubRand,
-			Commitment:  commitCopy.Commitment,
-		}
+	commit := &fptypes.PubRandCommit{
+		StartHeight: commitResp.StartHeight,
+		NumPubRand:  commitResp.NumPubRand,
+		Commitment:  commitResp.Commitment,
 	}
 
 	if err := commit.Validate(); err != nil {