class Travis::CLI::Login

def github
  @github ||= begin
    load_gh
    Tools::Github.new(session.config['github']) do |g|
      g.note          = "temporary token to identify with the travis command line client against #{api_endpoint}"
      g.explode       = explode?
      g.github_token  = github_token
      g.auto_token    = auto_token
      g.check_token   = !skip_token_check?
      g.drop_token    = !list_github_token
      g.login_header  = proc { login_header }
      g.debug         = proc { |log| debug(log) }
      g.after_tokens  = proc { g.explode = true and error('no suitable github token found') }
    end
  end
end

def list_token
  github.after_tokens = proc {}
  github.each_token do |token|
    say token
  end
end

def login
  session.access_token = nil
  github.with_token do |token|
    endpoint_config['access_token'] = github_auth(token)
    if user_login && (user.login != user_login)
      error(format('user mismatch: logged in as %p instead of %p', user.login,
                   user_login))
    end
    unless user.correct_scopes?
      error(
        "#{user.login} has not granted Travis CI the required permissions. " \
        "Please try re-syncing your user data at https://#{session.config['host']}/account/preferences " \
        "and try logging in via #{session.config['host']}"
      )
    end
    success("Successfully logged in as #{user.login}!")
  end
  return if session.access_token
  raise Travis::Client::GitHubLoginFailed, 'all GitHub tokens given were invalid'
end

def login_header
  say 'GitHub deprecated its Authorizations API exchanging a password for a token.'
  say 'Please visit https://github.blog/2020-07-30-token-authentication-requirements-for-api-and-git-operations for more information.'
  say "Try running with #{color('--github-token', :info)} or #{color('--auto-token', :info)} ."
end

def run
  list_github_token ? list_token : login
end