package cli

import (
	"fmt"

	"github.com/spf13/cobra"

	"github.com/kotoyuuko/cc-switch-cli/internal/templates"
)

func newTemplatesCmd(app *appState) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "templates",
		Short: "Inspect built-in provider templates",
	}
	cmd.AddCommand(
		&cobra.Command{
			Use:   "list",
			Short: "List template names",
			RunE: func(cmd *cobra.Command, args []string) error {
				for _, t := range templates.All() {
					fmt.Fprintf(app.stdout, "%s\t%s\n", t.Name, t.Description)
				}
				return nil
			},
		},
		&cobra.Command{
			Use:   "show <name>",
			Short: "Show a template's env keys, hints, and defaults",
			Args:  cobra.ExactArgs(1),
			RunE: func(cmd *cobra.Command, args []string) error {
				t, ok := templates.Get(args[0])
				if !ok {
					return fmt.Errorf(
						"template %q not found; run `cc-switch templates list`",
						args[0])
				}
				fmt.Fprintf(app.stdout, "%s — %s\n", t.Name, t.Description)
				fmt.Fprintln(app.stdout, "env:")
				for _, e := range t.Env {
					line := "  " + e.Name
					if e.Default != "" {
						line += fmt.Sprintf(" [%s]", e.Default)
					}
					if e.Hint != "" {
						line += "  # " + e.Hint
					}
					fmt.Fprintln(app.stdout, line)
				}
				return nil
			},
		},
	)
	return cmd
}