fix(SPV-846): handle exeptions example (#248)

Co-authored-by: Paweł Lewandowski <[email protected]>

errors.go

@@ -16,7 +16,7 @@ var ErrMissingXpriv = models.SPVError{Message: "xpriv missing", StatusCode: 401,
 var ErrCouldNotFindDraftTransaction = models.SPVError{Message: "could not find draft transaction", StatusCode: 404, Code: "error-draft-transaction-not-found"}
 
 // WrapError wraps an error into SPVError
-func WrapError(err error) *models.SPVError {
+func WrapError(err error) error {
 	if err == nil {
 		return nil
 	}
@@ -29,7 +29,7 @@ func WrapError(err error) *models.SPVError {
 }
 
 // WrapResponseError wraps a http response into SPVError
-func WrapResponseError(res *http.Response) *models.SPVError {
+func WrapResponseError(res *http.Response) error {
 	if res == nil {
 		return nil
 	}
@@ -48,7 +48,7 @@ func WrapResponseError(res *http.Response) *models.SPVError {
 	}
 }
 
-func CreateErrorResponse(code string, message string) *models.SPVError {
+func CreateErrorResponse(code string, message string) error {
 	return &models.SPVError{
 		StatusCode: http.StatusInternalServerError,
 		Code:       code,

examples/handle_exceptions/handle_exceptions.go

@@ -5,11 +5,13 @@ package main
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"os"
 
 	walletclient "github.com/bitcoin-sv/spv-wallet-go-client"
 	"github.com/bitcoin-sv/spv-wallet-go-client/examples"
+	"github.com/bitcoin-sv/spv-wallet/models"
 )
 
 func main() {
@@ -24,8 +26,12 @@ func main() {
 
 	status, err := client.AdminGetStatus(ctx)
 	if err != nil {
-		fmt.Println("Response status: ", err.GetStatusCode())
-		fmt.Println("Content: ", err.Error())
+		var extendedErr models.ExtendedError
+		if errors.As(err, &extendedErr) {
+			fmt.Printf("Extended error: [%d] '%s': %s\n", extendedErr.GetStatusCode(), extendedErr.GetCode(), extendedErr.GetMessage())
+		} else {
+			fmt.Println("Error: ", err.Error())
+		}
 
 		os.Exit(1)
 	}

http.go

@@ -7,13 +7,13 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"github.com/bitcoinschema/go-bitcoin/v2"
 	"net/http"
 	"strconv"
 
 	"github.com/bitcoin-sv/spv-wallet-go-client/utils"
 	"github.com/bitcoin-sv/spv-wallet/models"
 	"github.com/bitcoin-sv/spv-wallet/models/filter"
+	"github.com/bitcoinschema/go-bitcoin/v2"
 	"github.com/libsv/go-bk/bec"
 	"github.com/libsv/go-bk/bip32"
 )
@@ -565,6 +565,9 @@ func (wc *WalletClient) authenticateWithXpriv(sign bool, req *http.Request, xPri
 }
 
 func (wc *WalletClient) authenticateWithAccessKey(req *http.Request, rawJSON []byte) error {
+	if wc.accessKey == nil {
+		return WrapError(errors.New("access key is missing"))
+	}
 	return SetSignatureFromAccessKey(&req.Header, hex.EncodeToString(wc.accessKey.Serialise()), string(rawJSON))
 }