package cmd

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"
)

var completionCmd = &cobra.Command{
	Use:   "completion [bash|zsh|fish|powershell]",
	Short: "Generate shell completions",
	Long: `Generate shell completion scripts for opal.

To load completions:

Bash:
  $ source <(opal completion bash)
  # To load on startup, add to ~/.bashrc:
  $ echo 'source <(opal completion bash)' >> ~/.bashrc

Zsh:
  # Add to ~/.zshrc:
  eval "$(opal completion zsh)"

Fish:
  $ opal completion fish | source
  # To load on startup:
  $ opal completion fish > ~/.config/fish/completions/opal.fish`,
	ValidArgs: []string{"bash", "zsh", "fish", "powershell"},
	Args:      cobra.MatchAll(cobra.ExactArgs(1), cobra.OnlyValidArgs),
	Run: func(cmd *cobra.Command, args []string) {
		switch args[0] {
		case "bash":
			rootCmd.GenBashCompletionV2(os.Stdout, true)
		case "zsh":
			rootCmd.GenZshCompletion(os.Stdout)
		case "fish":
			rootCmd.GenFishCompletion(os.Stdout, true)
		case "powershell":
			rootCmd.GenPowerShellCompletionWithDesc(os.Stdout)
		default:
			fmt.Fprintf(os.Stderr, "Unknown shell: %s\n", args[0])
			os.Exit(1)
		}
	},
}