added ability to link accounts with `account:link:token` + `account:link:add` & switch between them with `i:am`/`we:are` bangtags; remove links with `account:link:del:USERNAME` or `account:link:clear`; list links with `account:link:list`

1 files changed, 14 insertions, 0 deletions

diff --git a/app/controllers/auth/sessions_controller.rb b/app/controllers/auth/sessions_controller.rb
index 332f4d7a7..413962607 100644
--- a/app/controllers/auth/sessions_controller.rb
+++ b/app/controllers/auth/sessions_controller.rb
@@ -8,6 +8,7 @@ class Auth::SessionsController < Devise::SessionsController
   skip_before_action :require_no_authentication, only: [:create]
   skip_before_action :check_user_permissions, only: [:destroy]
   prepend_before_action :authenticate_with_two_factor, if: :two_factor_enabled?, only: [:create]
+  prepend_before_action :switch_user
   prepend_before_action :set_pack
   before_action :set_instance_presenter, only: [:new]
   before_action :set_body_classes
@@ -52,6 +53,10 @@ class Auth::SessionsController < Devise::SessionsController
     params.require(:user).permit(:email, :password, :otp_attempt)
   end
 
+  def switch_params
+    params.permit(:switch_to)
+  end
+
   def after_sign_in_path_for(resource)
     last_url = stored_location_for(:user)
 
@@ -107,6 +112,15 @@ class Auth::SessionsController < Devise::SessionsController
     render :two_factor
   end
 
+  def switch_user
+    return unless switch_params[:switch_to].present? && current_user.present?
+    target_user = User.find_by(id: switch_params[:switch_to])
+    return unless target_user.present? && current_user.in?(target_user.linked_users)
+    self.resource = target_user
+    sign_in(target_user)
+    return root_path
+  end
+
   private
 
   def set_pack