timecard/timecard-rails

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
  include Devise::Controllers::Rememberable

  def github
    callback
  end

  def ruffnote
    callback
  end

  def callback
    omniauth = request.env["omniauth.auth"]
    prov = omniauth.provider

    authentication = Authentication.where(provider: omniauth.provider, uid: omniauth.uid).first
    if authentication.present? # sign in
      flash[:notice] = "Signed in successfully."
      remember_me(authentication.user)
      sign_in_and_redirect(:user, authentication.user)
    else
      if user_signed_in? # connect to provider
        current_user.send("apply_omniauth_with_#{prov}", omniauth)
        if current_user.save
          flash[:notice] = "Linked with #{prov} successfully."
        else
          flash[:alert] = "Linked with #{prov} faild."
        end
      else # sign up
        email = omniauth.info.email

        # Ruffnote APIからはメールアドレスが取得できない
        if email.nil? && prov == "ruffnote"
          email = "timecard_ruffnote_#{omniauth.info.name}@mindia.jp"
        end
        user = User.where(email: email).first_or_initialize
        user.send("apply_omniauth_with_#{prov}", omniauth)

        if user.save
          flash[:notice] = "Signed in successfully."
          remember_me(user)
          sign_in(:user, user)
          if current_user
            begin
              NotifyMailer.sign_up_user(user).deliver
            rescue Net::SMTPAuthenticationError, Net::SMTPServerBusy, Net::SMTPSyntaxError, Net::SMTPFatalError, Net::SMTPUnknownError => e
              logger.debug "[#{e.class}] #{e.message}"
            end
          end
        else
          session[:omniauth] = omniauth.except('extra')
          flash[:alert] = "Signed in faild."
        end
      end
      redirect_to root_url
    end
  end
end