rejections by country?

app/controllers/backend/dashboard_controller.rb

@@ -33,6 +33,9 @@ module Backend
       # Calculate rejection reason breakdown
       @rejection_breakdown = calculate_rejection_breakdown(@verifications.rejected)
 
+      # Calculate rejections by country
+      @rejections_by_country = calculate_rejections_by_country(@verifications.rejected)
+
       # Get leaderboard data
       activity_counts = PublicActivity::Activity
         .where(key: [ "verification.approve", "verification.reject" ])
@@ -94,5 +97,34 @@ module Backend
 
       breakdown.sort_by { |_, data| -data[:count] }.to_h
     end
+
+    def calculate_rejections_by_country(rejected_verifications)
+      return {} if rejected_verifications.empty?
+
+      by_country = {}
+
+      rejected_verifications.includes(:identity).each do |verification|
+        next unless verification.rejection_reason.present?
+        next unless verification.identity&.country.present?
+
+        country_code = verification.identity.country
+        country_name = ISO3166::Country[country_code]&.common_name || country_code
+
+        by_country[country_name] ||= { total: 0, reasons: {} }
+        by_country[country_name][:total] += 1
+
+        reason_name = verification.try(:rejection_reason_name) || verification.rejection_reason.humanize
+        by_country[country_name][:reasons][reason_name] ||= 0
+        by_country[country_name][:reasons][reason_name] += 1
+      end
+
+      # Sort countries by total rejections, and reasons within each country by count
+      by_country.transform_values do |data|
+        data[:reasons] = data[:reasons].sort_by { |_, count| -count }.to_h
+        data[:top_reason] = data[:reasons].first&.first
+        data[:top_reason_count] = data[:reasons].first&.last || 0
+        data
+      end.sort_by { |_, data| -data[:total] }.to_h
+    end
   end
 end

app/views/backend/dashboard/show.html.erb

@@ -101,5 +101,44 @@
         </div>
       </div>
     </div>
+    <hr>
+    <div class="section">
+      <div class="section-header"><h3>🌍 rejections by country</h3></div>
+      <div class="section-content">
+        <% if @rejections_by_country.any? %>
+          <table>
+            <thead>
+              <tr>
+                <th>country</th>
+                <th>rejections</th>
+                <th>top reason</th>
+                <th>breakdown</th>
+              </tr>
+            </thead>
+            <tbody>
+              <% @rejections_by_country.each do |country, data| %>
+                <tr>
+                  <td><b><%= country %></b></td>
+                  <td><%= data[:total] %></td>
+                  <td><%= data[:top_reason] %> (<%= data[:top_reason_count] %>)</td>
+                  <td>
+                    <details>
+                      <summary>view all</summary>
+                      <ul style="margin: 0.5rem 0 0 1rem; padding: 0;">
+                        <% data[:reasons].each do |reason, count| %>
+                          <li><%= reason %>: <%= count %></li>
+                        <% end %>
+                      </ul>
+                    </details>
+                  </td>
+                </tr>
+              <% end %>
+            </tbody>
+          </table>
+        <% else %>
+          <div class="empty-state">no rejections</div>
+        <% end %>
+      </div>
+    </div>
   <% end %>
 </div>