Add ability to view previous edits of a status in admin UI (#19462)

* Add ability to view previous edits of a status in admin UI

* Change moderator access to posts to be controlled by a separate policy

app/controllers/admin/statuses_controller.rb

@@ -3,18 +3,23 @@
 module Admin
   class StatusesController < BaseController
     before_action :set_account
-    before_action :set_statuses
+    before_action :set_statuses, except: :show
+    before_action :set_status, only: :show
 
     PER_PAGE = 20
 
     def index
-      authorize :status, :index?
+      authorize [:admin, :status], :index?
 
       @status_batch_action = Admin::StatusBatchAction.new
     end
 
+    def show
+      authorize [:admin, @status], :show?
+    end
+
     def batch
-      authorize :status, :index?
+      authorize [:admin, :status], :index?
 
       @status_batch_action = Admin::StatusBatchAction.new(admin_status_batch_action_params.merge(current_account: current_account, report_id: params[:report_id], type: action_from_button))
       @status_batch_action.save!
@@ -32,6 +37,7 @@ module Admin
 
     def after_create_redirect_path
       report_id = @status_batch_action&.report_id || params[:report_id]
+
       if report_id.present?
         admin_report_path(report_id)
       else
@@ -43,6 +49,10 @@ module Admin
       @account = Account.find(params[:account_id])
     end
 
+    def set_status
+      @status = @account.statuses.find(params[:id])
+    end
+
     def set_statuses
       @statuses = Admin::StatusFilter.new(@account, filter_params).results.preload(:application, :preloadable_poll, :media_attachments, active_mentions: :account, reblog: [:account, :application, :preloadable_poll, :media_attachments, active_mentions: :account]).page(params[:page]).per(PER_PAGE)
     end

app/controllers/admin/trends/statuses_controller.rb

@@ -2,7 +2,7 @@
 
 class Admin::Trends::StatusesController < Admin::BaseController
   def index
-    authorize :status, :review?
+    authorize [:admin, :status], :review?
 
     @locales  = StatusTrend.pluck('distinct language')
     @statuses = filtered_statuses.page(params[:page])
@@ -10,7 +10,7 @@ class Admin::Trends::StatusesController < Admin::BaseController
   end
 
   def batch
-    authorize :status, :review?
+    authorize [:admin, :status], :review?
 
     @form = Trends::StatusBatch.new(trends_status_batch_params.merge(current_account: current_account, action: action_from_button))
     @form.save