chore: ping registry to validate login credentials

Author: MarcStdt

cmd/registry_login.go

@@ -1,7 +1,10 @@
 package cmd
 
 import (
+	"fmt"
+
 	"github.com/highcard-dev/daemon/internal/core/domain"
+	"github.com/highcard-dev/daemon/internal/core/services/registry"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
@@ -21,6 +24,13 @@ Examples:
   druid registry login --host artifacts.druid.gg/project1 -u user1 -p pass1
   druid registry login --host artifacts.druid.gg/project2 -u user2 -p pass2`,
 	RunE: func(cmd *cobra.Command, args []string) error {
+
+		if err := registry.ValidateCredentials(registryHost, registryUser, registryPassword); err != nil {
+			return fmt.Errorf("login failed: %w", err)
+		}
+
+		cmd.Println("Login succeeded")
+
 		var registries []domain.RegistryCredential
 		viper.UnmarshalKey("registries", &registries)
 

internal/core/services/registry/oci.go

@@ -81,6 +81,30 @@ func extractHost(repoUrl string) string {
 	return repoUrl
 }
 
+func ValidateCredentials(host, username, password string) error {
+	registryHost := extractHost(host)
+
+	reg, err := remote.NewRegistry(registryHost)
+	if err != nil {
+		return fmt.Errorf("invalid registry host: %w", err)
+	}
+
+	reg.Client = &auth.Client{
+		Client: retry.DefaultClient,
+		Cache:  auth.DefaultCache,
+		Credential: auth.StaticCredential(registryHost, auth.Credential{
+			Username: username,
+			Password: password,
+		}),
+	}
+
+	if err := reg.Ping(context.Background()); err != nil {
+		return fmt.Errorf("authentication failed: %w", err)
+	}
+
+	return nil
+}
+
 func (c *OciClient) Pull(dir string, artifact string) error {
 	return c.PullSelective(dir, artifact, true, nil)
 }