feat: add auth logout and token helpers

cmd/auth.go

@@ -7,9 +7,10 @@ import (
 	"strings"
 	"syscall"
 
-	"github.com/spf13/cobra"
 	"codeberg.org/romaintb/fgj/internal/api"
 	"codeberg.org/romaintb/fgj/internal/config"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
 	"golang.org/x/term"
 )
 
@@ -33,13 +34,31 @@ var authStatusCmd = &cobra.Command{
 	RunE:  runAuthStatus,
 }
 
+var authLogoutCmd = &cobra.Command{
+	Use:   "logout",
+	Short: "Remove authentication for a Forgejo instance",
+	Long:  "Remove authentication for a configured Forgejo instance.",
+	RunE:  runAuthLogout,
+}
+
+var authTokenCmd = &cobra.Command{
+	Use:   "token",
+	Short: "Print the stored authentication token",
+	Long:  "Print the stored authentication token for a configured Forgejo instance.",
+	RunE:  runAuthToken,
+}
+
 func init() {
 	rootCmd.AddCommand(authCmd)
 	authCmd.AddCommand(authLoginCmd)
 	authCmd.AddCommand(authStatusCmd)
+	authCmd.AddCommand(authLogoutCmd)
+	authCmd.AddCommand(authTokenCmd)
 
 	authLoginCmd.Flags().String("hostname", "", "Forgejo instance hostname (e.g., codeberg.org)")
 	authLoginCmd.Flags().StringP("token", "t", "", "Personal access token")
+	authLogoutCmd.Flags().String("hostname", "", "Forgejo instance hostname (e.g., codeberg.org)")
+	authTokenCmd.Flags().String("hostname", "", "Forgejo instance hostname (e.g., codeberg.org)")
 }
 
 func runAuthLogin(cmd *cobra.Command, args []string) error {
@@ -121,3 +140,66 @@ func runAuthStatus(cmd *cobra.Command, args []string) error {
 
 	return nil
 }
+
+func runAuthLogout(cmd *cobra.Command, args []string) error {
+	cfg, err := config.Load()
+	if err != nil {
+		return fmt.Errorf("failed to load config: %w", err)
+	}
+
+	hostname, _ := cmd.Flags().GetString("hostname")
+	resolved, err := resolveAuthHostname(cfg, hostname)
+	if err != nil {
+		return err
+	}
+
+	delete(cfg.Hosts, resolved)
+	if err := cfg.Save(); err != nil {
+		return fmt.Errorf("failed to save config: %w", err)
+	}
+
+	fmt.Printf("✓ Logged out from %s\n", resolved)
+	return nil
+}
+
+func runAuthToken(cmd *cobra.Command, args []string) error {
+	cfg, err := config.Load()
+	if err != nil {
+		return fmt.Errorf("failed to load config: %w", err)
+	}
+
+	hostname, _ := cmd.Flags().GetString("hostname")
+	resolved, err := resolveAuthHostname(cfg, hostname)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println(cfg.Hosts[resolved].Token)
+	return nil
+}
+
+func resolveAuthHostname(cfg *config.Config, hostname string) (string, error) {
+	if hostname == "" {
+		hostname = viper.GetString("hostname")
+	}
+	if hostname == "" {
+		hostname = os.Getenv("FGJ_HOST")
+	}
+	if hostname == "" {
+		hostname = getDetectedHost()
+	}
+	if hostname == "" && len(cfg.Hosts) == 1 {
+		for host := range cfg.Hosts {
+			hostname = host
+		}
+	}
+	if hostname == "" {
+		hostname = "codeberg.org"
+	}
+
+	if _, ok := cfg.Hosts[hostname]; !ok {
+		return "", fmt.Errorf("no configuration found for host %s", hostname)
+	}
+
+	return hostname, nil
+}