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/*
macli - Unofficial CLI-Based MyAnimeList Client
Copyright © 2022 Vidhu Kant Sharma <vidhukant@vidhukant.xyz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package auth
import (
"os"
"os/user"
"os/exec"
"runtime"
"errors"
"fmt"
"github.com/zalando/go-keyring"
)
var serviceName string = "macli"
var userName string
func init() {
// get user and set username
currentUser, err := user.Current()
if err != nil {
fmt.Println("Error getting current user's info", err.Error())
os.Exit(1)
}
userName = currentUser.Username
}
// asks for all the details
func Login() {
/* check if an auth token already exists
* if there is an error with keyring, askClientId would handle it
* can safely ignore error here */
existingToken, _ := keyring.Get(serviceName, userName)
if existingToken != "" {
if !confirmInput("Already logged in. Log in again? [Y/n] ", true) {
fmt.Println("Login process aborted")
os.Exit(0)
}
}
clientId := askClientId()
challenge := codeChallenge()
link := generateLink(clientId, challenge)
openInBrowser(link)
listen(clientId, challenge)
}
func generateLink(clientId, challenge string) string {
return "https://myanimelist.net/v1/oauth2/authorize?response_type=code&client_id=" + clientId + "&code_challenge=" + challenge
}
func openInBrowser(url string) {
fmt.Println("Attempting to launch \033[36m" + url + "\033[0m in your default web browser. If it doesn't launch please manually copy-paste the link.")
var err error
switch runtime.GOOS {
case "linux":
err = exec.Command("xdg-open", url).Start()
case "windows":
err = exec.Command("rundll32", "url.dll,FileProtocolHandler", url).Start()
case "darwin":
err = exec.Command("open", url).Start()
default:
err = errors.New("<failed to detect platform>")
}
if err != nil {
fmt.Println("There was an error while launching your browser.")
fmt.Println("Please manually copy and paste the above URL into your web browser.")
fmt.Println(err)
}
}
func Logout() {
existingToken, _ := keyring.Get(serviceName, userName)
deleteToken()
deleteExpiresIn()
deleteRefreshToken()
if existingToken != "" {
fmt.Println("Deleted user credentials.")
}
// only ask to delete Client ID if it actually exists
existingClientId, _ := getClientId()
if existingClientId != "" && confirmInput("Delete your Client ID? [y/N] ", false) {
deleteClientId()
fmt.Println("Deleted Client ID.")
}
}
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