jam-cloud/web/app/controllers/sessions_controller.rb

# this is not a jam session - this is an 'auth session'
class SessionsController < ApplicationController

  layout "web"

  def signin
    @login_error = false
    @sso = params[:sso]
    @send_back_to = request.headers['REFERER']
    params[:send_back_to] = @send_back_to

    if current_user
      # send them on their way
      complete_sign_in(current_user)
      return
    end

    render :layout => "landing"
  end

  def create
    user = User.authenticate(params[:session][:email], params[:session][:password])

    if user.nil?
      @login_error = true
      @sso = params[:sso]
      @send_back_to = params[:send_back_to]
      render 'signin', :layout => "landing"
    else

      if jkclient_agent?
        user.update_progression_field(:first_ran_client_at)
      end

      @session_only_cookie = !jkclient_agent? && !params[:user].nil? && 0 == params[:user][:remember_me].to_i
      complete_sign_in user
    end
  end


# OAuth docs
# http://net.tutsplus.com/tutorials/ruby/how-to-use-omniauth-to-authenticate-your-users/
  def create_oauth
    auth_hash = request.env['omniauth.auth']
    authorization = UserAuthorization.find_by_provider_and_uid(auth_hash["provider"], auth_hash["uid"])
    if authorization
      # Sign in for a user who has already registered.
      complete_sign_in authorization.user
    else
      # Sign up for a completely new user.
      # First/last name: auth_hash["info"]["first_name"] and auth_hash["info"]["last_name"]
      # token: auth_hash["credentials"]["token"] -- "expires_at"
      #
      # For debugging - to see what all is there:
      # render :text => auth_hash.to_yaml
      #FbGraph.debug!
      token = auth_hash[:credentials][:token]

      # FIXME:
      # This should probably be in a transaction somehow, meaning the user 
      # create and the authorization create. Concern is UserManager.new.signup sends
      # an email and whatnot.
      #
      # Also, should we grab their photo from facebook?
      user = UserManager.new.signup(remote_ip: remote_ip(),
                                    first_name: auth_hash[:info][:first_name],
                                    last_name: auth_hash[:info][:last_name],
                                    email: auth_hash[:info][:email])
                              
      # Users who sign up using oauth are presumed to have valid email adddresses.
      user.confirm_email!
      
      auth = user.user_authorizations.build :provider => auth_hash[:provider], 
                                            :uid => auth_hash[:uid], 
                                            :token => auth_hash[:credentials][:token], 
                                            :token_expiration => Time.at(auth_hash[:credentials][:expires_at])
      user.save
      complete_sign_in user
    end
  end


  # https://github.com/intridea/omniauth/wiki/Saving-User-Location
  def oauth_callback

    auth_hash = request.env['omniauth.auth']

    provider = auth_hash[:provider]

    if provider == 'twitter'
      @user_authorization = current_user.build_twitter_authorization(auth_hash)
      if !@user_authorization.save
        # this is a very poorly styled page, but it's better than a server error.
        # the only reason this happens is because some other account has authed this twitter acct
        render "twitter_oauth_failure"
        return
      end

      redirect_to request.env['omniauth.origin'] || '/'
      return
    elsif provider == 'facebook'
      fb_uid = auth_hash[:uid]
      token = auth_hash[:credentials][:token]
      token_expiration = Time.at(auth_hash[:credentials][:expires_at])
      first_name = auth_hash[:extra][:raw_info][:first_name]
      last_name = auth_hash[:extra][:raw_info][:last_name]
      email = auth_hash[:extra][:raw_info][:email]
      gender = auth_hash[:extra][:raw_info][:gender]

      fb_signup = FacebookSignup.new
      fb_signup.uid = fb_uid
      fb_signup.token = token
      fb_signup.token_expires_at = token_expiration
      fb_signup.first_name = first_name
      fb_signup.last_name = last_name
      fb_signup.email = email
      if gender == 'male'
        fb_signup.gender = 'M'
      elsif gender == 'female'
        fb_signup.gender = 'F'
      end
      fb_signup.save!

      redirect_to "#{signup_path}?facebook_signup=#{fb_signup.lookup_id}"
      return
    end

    if current_user.nil?
      render :nothing => true, :status => 404
      return
    end

    #authorization = UserAuthorization.find_by_provider_and_uid(auth_hash["provider"], auth_hash["uid"])

    # Always make and save a new authorization. This is because they expire, and honestly there's no cost
    # to just making and saving it.
    #if authorization.nil?
      authorization = current_user.user_authorizations.build :provider => auth_hash[:provider],
                                                             :uid => auth_hash[:uid], 
                                                             :token => auth_hash[:credentials][:token], 
                                                             :token_expiration => Time.at(auth_hash[:credentials][:expires_at])
      authorization.save
    #end

    render 'oauth_complete', :layout => "landing"
  end

  def redirect_after_signin(default)
    redirect_to(params['redirect-to'].blank? ? default : params['redirect-to'])
  end

  def redirect_to_forums_after_signin
    redirect_to("#{Rails.application.config.vanilla_login_url}?client_id=#{Rails.application.config.vanilla_client_id}&Target=#{ERB::Util.url_encode(params[:send_back_to].blank? ? '/' : params[:send_back_to])}")
  end

  def redirect_to_support_after_signin(user)
    # generate multipass token and sign it
    multipass = DeskMultipass.new(user)
    callback_url = Rails.application.config.multipass_callback_url
    redirect_to "#{callback_url}?multipass=#{multipass.token}&signature=#{multipass.signature}"
  end

  def complete_sign_in(user)
    sign_in user

    if params[:sso] == "desk"
      redirect_to_support_after_signin(user)
    elsif params[:sso] == 'forums'
      redirect_to_forums_after_signin
    else
      redirect_after_signin(client_path)
    end
  end

  def destroy
    # earlier, code here would delete the connection using client_id  from cookies
    # however, we should never try to delete the client_id cookie (make it as permanent as possible)
    # also, because the client will stop heartbeating and close the connection to gateway,
    # in any case the server will notice after 10 seconds that the user is gone.
    # if we really want someone to know right away that the client is gone, then just make sure the client calls
    # leave session before it calls delete (VRFS-617 should solve that)
    sign_out
    redirect_to client_url
  end

  def failure
    redirect_to request.query_parameters['origin'] || '/'
  end

  def connection_state
    if (defined?(TEST_CONNECT_STATES) && TEST_CONNECT_STATES) || 'development'==Rails.env
      @prefix = defined?(TEST_CONNECT_STATE_JS_LOG_PREFIX) ? TEST_CONNECT_STATE_JS_LOG_PREFIX : '*** '
      render('connection_state', :layout => 'client') && return
    end
    render :nothing => true, :status => 404
  end

end