package cmd

import (
	"fmt"

	"github.com/spf13/cobra"
)

var whoamiCmd = &cobra.Command{
	Use:   "whoami",
	Short: "Show the authenticated user on the current host",
	Long:  "Display login, full name, and email for the authenticated user on the active host.",
	Example: `  # Show who you are on the active host
  fgj whoami

  # On a specific host
  fgj whoami --hostname forgejo.example.com

  # As JSON
  fgj whoami --json`,
	RunE: runWhoami,
}

func init() {
	rootCmd.AddCommand(whoamiCmd)
	addJSONFlags(whoamiCmd, "Output as JSON")
}

func runWhoami(cmd *cobra.Command, args []string) error {
	client, err := loadClient()
	if err != nil {
		return err
	}

	user, _, err := client.GetMyUserInfo()
	if err != nil {
		return fmt.Errorf("failed to fetch current user: %w", err)
	}

	if wantJSON(cmd) {
		return outputJSON(cmd, user)
	}

	fmt.Fprintf(ios.Out, "%s\n", user.UserName)
	if user.FullName != "" && user.FullName != user.UserName {
		fmt.Fprintf(ios.Out, "  name:  %s\n", user.FullName)
	}
	if user.Email != "" {
		fmt.Fprintf(ios.Out, "  email: %s\n", user.Email)
	}
	fmt.Fprintf(ios.Out, "  host:  %s\n", client.Hostname())
	return nil
}