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package install
import (
"errors"
"fmt"
"os"
"path/filepath"
)
type installer interface {
Install(cmd, bin string) error
Uninstall(cmd, bin string) error
}
// Install complete command given:
// cmd: is the command name
func Install(cmd string) error {
shell := shellType()
if shell == "" {
return errors.New("must install through a terminatl")
}
i := getInstaller(shell)
if i == nil {
return fmt.Errorf("shell %s not supported", shell)
}
bin, err := getBinaryPath()
if err != nil {
return err
}
return i.Install(cmd, bin)
}
// Uninstall complete command given:
// cmd: is the command name
func Uninstall(cmd string) error {
shell := shellType()
if shell == "" {
return errors.New("must uninstall through a terminatl")
}
i := getInstaller(shell)
if i == nil {
return fmt.Errorf("shell %s not supported", shell)
}
bin, err := getBinaryPath()
if err != nil {
return err
}
return i.Uninstall(cmd, bin)
}
func getInstaller(shell string) installer {
switch shell {
case "bash":
return bash{}
default:
return nil
}
}
func getBinaryPath() (string, error) {
bin, err := os.Executable()
if err != nil {
return "", err
}
return filepath.Abs(bin)
}
func shellType() string {
shell := os.Getenv("SHELL")
return filepath.Base(shell)
}
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