Add appeals (#17364)

* Add appeals

* Add ability to reject appeals and ability to browse pending appeals in admin UI

* Add strikes to account page in settings

* Various fixes and improvements

- Add separate notification setting for appeals, separate from reports
- Fix style of links in report/strike header
- Change approving an appeal to not restore statuses (due to federation complexities)
- Change style of successfully appealed strikes on account settings page
- Change account settings page to only show unappealed or recently appealed strikes

* Change appealed_at to overruled_at

* Fix missing method error

app/models/admin/action_log_filter.rb

@@ -8,6 +8,8 @@ class Admin::ActionLogFilter
   ).freeze
 
   ACTION_TYPE_MAP = {
+    approve_appeal: { target_type: 'Appeal', action: 'approve' }.freeze,
+    reject_appeal: { target_type: 'Appeal', action: 'reject' }.freeze,
     assigned_to_self_report: { target_type: 'Report', action: 'assigned_to_self' }.freeze,
     change_email_user: { target_type: 'User', action: 'change_email' }.freeze,
     confirm_user: { target_type: 'User', action: 'confirm' }.freeze,

app/models/admin/appeal_filter.rb

@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+class Admin::AppealFilter
+  KEYS = %i(
+    status
+  ).freeze
+
+  attr_reader :params
+
+  def initialize(params)
+    @params = params
+  end
+
+  def results
+    scope = Appeal.order(id: :desc)
+
+    params.each do |key, value|
+      next if %w(page).include?(key.to_s)
+
+      scope.merge!(scope_for(key, value.to_s.strip)) if value.present?
+    end
+
+    scope
+  end
+
+  private
+
+  def scope_for(key, value)
+    case key.to_s
+    when 'status'
+      status_scope(value)
+    else
+      raise "Unknown filter: #{key}"
+    end
+  end
+
+  def status_scope(value)
+    case value
+    when 'approved'
+      Appeal.approved
+    when 'rejected'
+      Appeal.rejected
+    when 'pending'
+      Appeal.pending
+    else
+      raise "Unknown status: #{value}"
+    end
+  end
+end