package cmd

import (
	"fmt"
	"io"
	"os"

	"github.com/spf13/cobra"
)

var completionCmd = &cobra.Command{
	Use:                   "completion [bash|zsh|fish|powershell]",
	Short:                 "Generate shell completion scripts",
	Long:                  "Generate shell completion scripts for fj.",
	Args:                  cobra.MatchAll(cobra.ExactArgs(1), cobra.OnlyValidArgs),
	ValidArgs:             []string{"bash", "zsh", "fish", "powershell"},
	DisableFlagsInUseLine: true,
	RunE: func(cmd *cobra.Command, args []string) error {
		var out io.Writer = os.Stdout
		switch args[0] {
		case "bash":
			return rootCmd.GenBashCompletion(out)
		case "zsh":
			return rootCmd.GenZshCompletion(out)
		case "fish":
			return rootCmd.GenFishCompletion(out, true)
		case "powershell":
			return rootCmd.GenPowerShellCompletionWithDesc(out)
		default:
			return fmt.Errorf("unsupported shell: %s", args[0])
		}
	},
}

func init() {
	rootCmd.AddCommand(completionCmd)
}