Change account suspensions to be reversible by default (#14726)

app/models/account.rb

@@ -222,23 +222,20 @@ class Account < ApplicationRecord
 
   def suspend!(date = Time.now.utc)
     transaction do
-      user&.disable! if local?
+      create_deletion_request!
       update!(suspended_at: date)
     end
   end
 
   def unsuspend!
     transaction do
-      user&.enable! if local?
+      deletion_request&.destroy!
       update!(suspended_at: nil)
     end
   end
 
   def memorialize!
-    transaction do
-      user&.disable! if local?
-      update!(memorial: true)
-    end
+    update!(memorial: true)
   end
 
   def sign?

app/models/account_deletion_request.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: account_deletion_requests
+#
+#  id         :bigint(8)        not null, primary key
+#  account_id :bigint(8)
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+class AccountDeletionRequest < ApplicationRecord
+  DELAY_TO_DELETION = 30.days.freeze
+
+  belongs_to :account
+
+  def due_at
+    created_at + DELAY_TO_DELETION
+  end
+end

app/models/admin/account_action.rb

@@ -134,7 +134,7 @@ class Admin::AccountAction
   end
 
   def process_email!
-    UserMailer.warning(target_account.user, warning, status_ids).deliver_now! if warnable?
+    UserMailer.warning(target_account.user, warning, status_ids).deliver_later! if warnable?
   end
 
   def warnable?

app/models/concerns/account_associations.rb

@@ -60,5 +60,8 @@ module AccountAssociations
     # Hashtags
     has_and_belongs_to_many :tags
     has_many :featured_tags, -> { includes(:tag) }, dependent: :destroy, inverse_of: :account
+
+    # Account deletion requests
+    has_one :deletion_request, class_name: 'AccountDeletionRequest', inverse_of: :account, dependent: :destroy
   end
 end

app/models/form/account_batch.rb

@@ -69,6 +69,6 @@ class Form::AccountBatch
     records = accounts.includes(:user)
 
     records.each { |account| authorize(account.user, :reject?) }
-           .each { |account| SuspendAccountService.new.call(account, reserve_email: false, reserve_username: false) }
+           .each { |account| DeleteAccountService.new.call(account, reserve_email: false, reserve_username: false) }
   end
 end

app/models/invite.rb

@@ -28,7 +28,7 @@ class Invite < ApplicationRecord
   before_validation :set_code
 
   def valid_for_use?
-    (max_uses.nil? || uses < max_uses) && !expired? && !(user.nil? || user.disabled?)
+    (max_uses.nil? || uses < max_uses) && !expired? && user&.functional?
   end
 
   private

app/models/user.rb

@@ -168,7 +168,7 @@ class User < ApplicationRecord
   end
 
   def active_for_authentication?
-    true
+    !account.memorial?
   end
 
   def suspicious_sign_in?(ip)
@@ -176,7 +176,7 @@ class User < ApplicationRecord
   end
 
   def functional?
-    confirmed? && approved? && !disabled? && !account.suspended? && account.moved_to_account_id.nil?
+    confirmed? && approved? && !disabled? && !account.suspended? && !account.memorial? && account.moved_to_account_id.nil?
   end
 
   def unconfirmed_or_pending?