init.go

package cmd

import (
	"fmt"
	"io/ioutil"
	"os"
	"path/filepath"

	"github.com/go-git/go-git/v5"
	"github.com/spf13/cobra"
)

var (
	initCmd = &cobra.Command{
		Use:   "init",
		Short: "Initialize ~/.gameover.",
		Run: func(cmd *cobra.Command, args []string) {
			tmp, err := ioutil.TempDir("", "gameover")
			if err != nil {
				fmt.Println(err)
				os.Exit(1)
			}
			os.RemoveAll(gameoverDir(""))
			_, err = git.PlainClone(tmp, false, &git.CloneOptions{
				URL: "https://github.com/kbrgl/gameover.git",
			})
			if err != nil {
				fmt.Printf("error: %s\n", err)
				os.Exit(1)
			}
			err = os.Rename(filepath.Join(tmp, ".gameover"), gameoverDir(""))
			if err != nil {
				fmt.Printf("failed to rename: %s\n", err)
				os.Exit(1)
			}
			err = os.RemoveAll(tmp)
			if err != nil {
				fmt.Printf("failed to delete directory: %s\n", err)
				os.Exit(1)
			}
			fmt.Println("Initialized gameover in", gameoverDir(""))
			fmt.Println("Add 'source ~/.gameover/env' to your ~/.profile or whatever shell init script you use")
		},
	}
)

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