Fix invites not being disabled upon account suspension (#11412)

* Disable invite links from disabled/suspended users

* Add has_many invites relationship to users

* Destroy unused invites when suspending an account

app/controllers/invites_controller.rb

@@ -39,7 +39,7 @@ def destroy
   private
 
   def invites
-    Invite.where(user: current_user).order(id: :desc)
+    current_user.invites.order(id: :desc)
   end
 
   def resource_params

app/models/invite.rb

@@ -17,15 +17,15 @@
 class Invite < ApplicationRecord
   include Expireable
 
-  belongs_to :user
+  belongs_to :user, inverse_of: :invites
   has_many :users, inverse_of: :invite
 
   scope :available, -> { where(expires_at: nil).or(where('expires_at >= ?', Time.now.utc)) }
 
   before_validation :set_code
 
   def valid_for_use?
-    (max_uses.nil? || uses < max_uses) && !expired?
+    (max_uses.nil? || uses < max_uses) && !expired? && !(user.nil? || user.disabled?)
   end
 
   private

app/models/user.rb

@@ -73,6 +73,7 @@ class User < ApplicationRecord
 
   has_many :applications, class_name: 'Doorkeeper::Application', as: :owner
   has_many :backups, inverse_of: :user
+  has_many :invites, inverse_of: :user
 
   has_one :invite_request, class_name: 'UserInviteRequest', inverse_of: :user, dependent: :destroy
   accepts_nested_attributes_for :invite_request, reject_if: ->(attributes) { attributes['text'].blank? }

app/services/suspend_account_service.rb

@@ -66,6 +66,7 @@ def purge_user!
       @account.user.destroy
     else
       @account.user.disable!
+      @account.user.invites.where(uses: 0).destroy_all
     end
   end
 

spec/models/invite_spec.rb

@@ -3,27 +3,33 @@
 RSpec.describe Invite, type: :model do
   describe '#valid_for_use?' do
     it 'returns true when there are no limitations' do
-      invite = Invite.new(max_uses: nil, expires_at: nil)
+      invite = Fabricate(:invite, max_uses: nil, expires_at: nil)
       expect(invite.valid_for_use?).to be true
     end
 
     it 'returns true when not expired' do
-      invite = Invite.new(max_uses: nil, expires_at: 1.hour.from_now)
+      invite = Fabricate(:invite, max_uses: nil, expires_at: 1.hour.from_now)
       expect(invite.valid_for_use?).to be true
     end
 
     it 'returns false when expired' do
-      invite = Invite.new(max_uses: nil, expires_at: 1.hour.ago)
+      invite = Fabricate(:invite, max_uses: nil, expires_at: 1.hour.ago)
       expect(invite.valid_for_use?).to be false
     end
 
     it 'returns true when uses still available' do
-      invite = Invite.new(max_uses: 250, uses: 249, expires_at: nil)
+      invite = Fabricate(:invite, max_uses: 250, uses: 249, expires_at: nil)
       expect(invite.valid_for_use?).to be true
     end
 
     it 'returns false when maximum uses reached' do
-      invite = Invite.new(max_uses: 250, uses: 250, expires_at: nil)
+      invite = Fabricate(:invite, max_uses: 250, uses: 250, expires_at: nil)
+      expect(invite.valid_for_use?).to be false
+    end
+
+    it 'returns false when invite creator has been disabled' do
+      invite = Fabricate(:invite, max_uses: nil, expires_at: nil)
+      SuspendAccountService.new.call(invite.user.account)
       expect(invite.valid_for_use?).to be false
     end
   end