feat(instance): redirect to scw login when no credentials are provided

Author: Mia-Cross

core/client.go

@@ -1,7 +1,6 @@
 package core
 
 import (
-	"fmt"
 	"net/http"
 
 	"github.com/scaleway/scaleway-cli/v2/internal/platform"
@@ -35,5 +34,5 @@ func createClientError(err error) error {
 		}
 	}
 
-	return fmt.Errorf("failed to create client: %w", err)
+	return err
 }

internal/platform/terminal/terminal_client.go

@@ -93,9 +93,9 @@ func errIsConfigFileNotFound(err error) bool {
 // configErrorDetails generate a detailed error message for an invalid client option.
 func configErrorDetails(configKey, varEnv string) string {
 	// TODO: update the more info link
-	return fmt.Sprintf(`%s can be initialised using the command "scw init".
+	return fmt.Sprintf(`%s can be initialized using the command "scw init".
 
-After initialisation, there are three ways to provide %s:
+After initialization, there are three ways to provide %s:
 - with the Scaleway config file, in the %s key: %s;
 - with the %s environement variable;
 
@@ -110,12 +110,23 @@ More info: https://github.com/scaleway/scaleway-sdk-go/tree/master/scw#scaleway-
 	)
 }
 
+// noConfigErrorDetails prints a message for when both the access key and the secret key are missing.
+func noConfigErrorDetails() string {
+	return `No credentials were provided.
+
+You can create new credentials using the command "scw login".
+
+Once created, you can check them here: https://console.scaleway.com/iam/api-keys`
+}
+
 // validateClient validate a client configuration and make sure all mandatory setting are present.
 // This function is only call for commands that require a valid client.
 func validateClient(client *scw.Client) error {
-	accessKey, _ := client.GetAccessKey()
+	var configError *platform.ClientError
+
+	accessKey, accessKeyExists := client.GetAccessKey()
 	if accessKey == "" {
-		return &platform.ClientError{
+		configError = &platform.ClientError{
 			Err:     errors.New("access key is required"),
 			Details: configErrorDetails("access_key", "SCW_ACCESS_KEY"),
 		}
@@ -127,9 +138,9 @@ func validateClient(client *scw.Client) error {
 		}
 	}
 
-	secretKey, _ := client.GetSecretKey()
+	secretKey, secretKeyExists := client.GetSecretKey()
 	if secretKey == "" {
-		return &platform.ClientError{
+		configError = &platform.ClientError{
 			Err:     errors.New("secret key is required"),
 			Details: configErrorDetails("secret_key", "SCW_SECRET_KEY"),
 		}
@@ -141,6 +152,16 @@ func validateClient(client *scw.Client) error {
 		}
 	}
 
+	switch {
+	case !accessKeyExists && !secretKeyExists:
+		return &platform.ClientError{
+			Err:     errors.New("no credentials provided"),
+			Details: noConfigErrorDetails(),
+		}
+	case !accessKeyExists || !secretKeyExists:
+		return configError
+	}
+
 	defaultOrganizationID, _ := client.GetDefaultOrganizationID()
 	if defaultOrganizationID == "" {
 		return &platform.ClientError{