Fix #4972: Display report counters in user profiles

* Add ability to search modreports by reported user.
* Display "received:N submitted:N" modreport counters in profiles.

app/models/moderation_report.rb

@@ -113,10 +113,20 @@ class ModerationReport < ApplicationRecord
     end
   end
 
+  def self.received_by(user)
+    where(model: Comment.where(creator: user)).or(where(model: ForumPost.where(creator: user))).or(where(model: Dmail.received.where(from: user)))
+  end
+
   def self.search(params)
     q = search_attributes(params, :id, :created_at, :updated_at, :reason, :creator, :model, :status)
     q = q.text_attribute_matches(:reason, params[:reason_matches])
 
+    if params[:recipient_id].present?
+      q = q.received_by(User.search(id: params[:recipient_id]))
+    elsif params[:recipient_name].present?
+      q = q.received_by(User.search(name_matches: params[:recipient_name]))
+    end
+
     q.apply_default_order(params)
   end
 

app/views/moderation_reports/index.html.erb

@@ -3,6 +3,7 @@
     <h1>Moderation reports</h1>
 
     <%= search_form_for(moderation_reports_path) do |f| %>
+      <%= f.input :recipient_name, label: "Reported user", input_html: { value: params[:search][:recipient_name], "data-autocomplete": "user" } %>
       <%= f.input :creator_name, label: "Reporter", input_html: { value: params[:search][:creator_name], "data-autocomplete": "user" } %>
       <%= f.input :reason_matches, label: "Reason", input_html: { value: params[:search][:reason_matches] } %>
       <%= f.input :model_id, label: "ID", input_html: { value: params[:search][:model_id] } %>
@@ -33,6 +34,7 @@
 
       <% t.column "Reported user" do |report| %>
         <%= link_to_user report.reported_user %>
+        <%= link_to "»", moderation_reports_path(search: { recipient_name: report.reported_user.name }) %>
       <% end %>
 
       <% t.column "Reporter" do |report| %>

app/views/users/_statistics.html.erb

@@ -240,6 +240,16 @@
         <td><%= presenter.feedbacks(self) %></td>
       </tr>
 
+      <% if policy(ModerationReport).can_see_moderation_reports? %>
+        <tr>
+          <th>Mod Reports</th>
+          <td>
+            <%= link_to "received:#{ModerationReport.received_by(user).count}", moderation_reports_path(search: { recipient_name: user.name }) %>
+            <%= link_to "submitted:#{ModerationReport.where(creator: user).count}", moderation_reports_path(search: { creator_name: user.name }) %>
+          </td>
+        </tr>
+      <% end %>
+
       <% if policy(UserNameChangeRequest.new(user: user)).show? %>
         <% user.user_name_change_requests.visible(CurrentUser.user).tap do |changes| %>
           <% if changes.present? %>