GRN2-6: Added the ability for admins to specify registration method (#520)

* Added the ability to invite users

* Small bug fix

* Added the ability to approve/decline users

* Small bug fixes

* More bug fixes

* More minor changes

* Final changes

app/controllers/concerns/emailer.rb

@@ -31,12 +31,32 @@ module Emailer
     UserMailer.password_reset(@user, reset_link, logo_image, user_color).deliver_now
   end
 
+  # Sends inivitation to join
+  def send_invitation_email(name, email, token)
+    @token = token
+    UserMailer.invite_email(name, email, invitation_link, logo_image, user_color).deliver_now
+  end
+
+  def send_user_approved_email(user)
+    UserMailer.approve_user(user, root_url, logo_image, user_color).deliver_now
+  end
+
+  private
+
   # Returns the link the user needs to click to verify their account
   def user_verification_link
-    request.base_url + edit_account_activation_path(token: @user.activation_token, email: @user.email)
+    edit_account_activation_url(token: @user.activation_token, email: @user.email)
   end
 
   def reset_link
-    request.base_url + edit_password_reset_path(@user.reset_token, email: @user.email)
+    edit_password_reset_url(@user.reset_token, email: @user.email)
+  end
+
+  def invitation_link
+    if allow_greenlight_users?
+      signup_url(invite_token: @token)
+    else
+      root_url(invite_token: @token)
+    end
   end
 end

app/controllers/concerns/registrar.rb

@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
+#
+# Copyright (c) 2018 BigBlueButton Inc. and by respective authors (see below).
+#
+# This program is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free Software
+# Foundation; either version 3.0 of the License, or (at your option) any later
+# version.
+#
+# BigBlueButton 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 Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
+
+module Registrar
+  extend ActiveSupport::Concern
+
+  def registration_method
+    Setting.find_or_create_by!(provider: user_settings_provider).get_value("Registration Method")
+  end
+
+  def open_registration
+     registration_method == Rails.configuration.registration_methods[:open]
+  end
+
+  def approval_registration
+     registration_method == Rails.configuration.registration_methods[:approval]
+  end
+
+  def invite_registration
+     registration_method == Rails.configuration.registration_methods[:invite]
+  end
+
+  # Returns a hash containing whether the user has been invited and if they
+  # signed up with the same email that they were invited with
+  def check_user_invited(email, token, domain)
+    return { present: true, verified: false } unless invite_registration
+    return { present: false, verified: false } if token.nil?
+
+    invite = Invitation.valid.find_by(invite_token: token, provider: domain)
+    if invite.present?
+      # Check if they used the same email to sign up
+      same_email = email.casecmp(invite.email).zero?
+      invite.destroy
+      { present: true, verified: same_email }
+    else
+      { present: false, verified: false }
+    end
+  end
+end