Remove mod-only user revert system (#4178).

The mass undo system from #4178 replaces this system.

Followup to f2dccf8cf.

app/controllers/user_reverts_controller.rb

@@ -1,15 +0,0 @@
-class UserRevertsController < ApplicationController
-  before_action :moderator_only
-
-  def new
-    @user = User.find(params[:user_id])
-  end
-
-  def create
-    user = User.find(params[:user_id])
-    revert = UserRevert.new(user.id)
-    revert.process
-    redirect_to(user_path(user.id))
-  end
-end
-

app/logical/user_revert.rb

@@ -1,32 +0,0 @@
-# reverts all changes made by a user
-class UserRevert
-  THRESHOLD = 1_000
-  class TooManyChangesError < RuntimeError ; end
-
-  attr_reader :user_id
-
-  def initialize(user_id)
-    @user_id = user_id
-  end
-
-  def process
-    validate!
-    revert_post_changes
-  end
-
-  def validate!
-    if PostArchive.where(updater_id: user_id).count > THRESHOLD
-      raise TooManyChangesError.new("This user has too many changes to be reverted")
-    end
-  end
-
-  def revert_post_changes
-    PostArchive.where(updater_id: user_id).find_each do |x|
-      x.undo!
-    end
-  end
-
-  def self.can_revert?(user)
-    user.post_update_count <= THRESHOLD
-  end
-end

app/presenters/user_presenter.rb

@@ -101,7 +101,7 @@ class UserPresenter
   end
 
   def post_version_count(template)
-    template.link_to(user.post_update_count, template.post_versions_path(:lr => user.id, :search => {:updater_id => user.id}))
+    template.link_to(user.post_update_count, template.post_versions_path(:search => {:updater_id => user.id}))
   end
 
   def note_version_count(template)

app/views/post_versions/index.html.erb

@@ -13,10 +13,6 @@
         <%= render "standard_listing" %>
       <% end %>
 
-      <% if params[:lr] && CurrentUser.is_moderator? %>
-        <p><%= link_to "Revert this user's changes", new_user_revert_path(:user_id => params[:lr]) %></p>
-      <% end %>
-
       <%= numbered_paginator(@post_versions) %>
     <% end %>
   </div>

app/views/static/site_map.html.erb

@@ -78,7 +78,6 @@
         <% if Danbooru.config.reportbooru_server %>
           <li><%= link_to("Top Searches", searches_explore_posts_path) %></li>
           <li><%= link_to("Missed Searches", missed_searches_explore_posts_path) %></li>
-          <li><%= link_to("Post Changes", reports_post_versions_path) %></li>
         <% end %>
       </ul>
     </section>

app/views/user_reverts/new.html.erb

@@ -1,15 +0,0 @@
-<div id="c-user-reverts">
-  <div id="a-new">
-    <h1>Revert Changes</h1>
-
-    <p>You are about to revert all changes made by <%= link_to_user @user %>. Continue?</p>
-
-    <%= form_tag(user_revert_path) do %>
-      <%= hidden_field_tag :user_id, params[:user_id] %>
-
-      <%= submit_tag "Yes" %>
-    <% end %>
-  </div>
-</div>
-
-<%= render "users/secondary_links" %>

app/views/users/_statistics.html.erb

@@ -94,9 +94,6 @@
         <th>Post Changes</th>
         <td>
           <%= presenter.post_version_count(self) %>
-          <% if CurrentUser.is_moderator? && UserRevert.can_revert?(user)%>
-            (<%= link_to "revert all", new_user_revert_path(user_id: user.id) %>)
-          <% end %>
           <% if CurrentUser.id == user.id %> 
             (<%= link_to "refresh", new_maintenance_user_count_fixes_path %>)
           <% end %>