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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"
  "fmt"
)

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() {
  clientId := askClientId()
  challenge := codeChallenge()
  link := generateLink(clientId, challenge)
  fmt.Println("Please open this link in the browser:")
  fmt.Println(link)
}

func generateLink(clientId, challenge string) string {
  return "https://myanimelist.net/v1/oauth2/authorize?response_type=code&client_id=" + clientId + "&code_challenge=" + challenge
}

func Logout() {
  deleteClientId()
  deleteToken()
}