including purchase into expenses pie

app/Services/FinancialCategorySummaryService.php

@@ -26,6 +26,10 @@ final class FinancialCategorySummaryService
                 continue;
             }
 
+            if (strcasecmp($category, 'Purchase') === 0) {
+                $category = 'Expense';
+            }
+
             $expenseCategories[$category] = round(($expenseCategories[$category] ?? 0) + $amount, 2);
             $totalExpenses += $amount;
         }

app/Views/administrator/stats.php

@@ -404,7 +404,7 @@ $canViewFinancialStats = (bool) ($canViewFinancialStats ?? false);
 
   pie('studentGenderChart', data.gender, [palette.blue,palette.orange], data.totalStudents);
   pie('academicResultsChart', data.results, [palette.green,palette.red,palette.slate], data.totalStudents);
-  pie('topPerformersChart', data.topGender, [palette.blue,palette.orange], data.totalStudents, 'Other students');
+  pie('topPerformersChart', data.topGender, [palette.blue,palette.orange], data.totalStudents, 'Not classified as top performers');
 
   new Chart(document.getElementById('classSizeChart'), {
     type:'bar',

tests/app/Services/FinancialCategorySummaryServiceTest.php

@@ -21,4 +21,17 @@ class FinancialCategorySummaryServiceTest extends CIUnitTestCase
         $this->assertSame(['Books' => 125.50, 'Office Supplies' => 75.0], $summary['expenseCategories']);
         $this->assertArrayNotHasKey('Donation', $summary['expenseCategories']);
     }
+
+    public function testPurchasesAreIncludedInExpenseCategory(): void
+    {
+        $summary = FinancialCategorySummaryService::summarize([
+            ['category' => 'Expense', 'amount' => 350],
+            ['category' => 'Purchase', 'amount' => 25.50],
+            ['category' => 'purchase', 'amount' => 10],
+        ]);
+
+        $this->assertSame(385.50, $summary['totalExpenses']);
+        $this->assertSame(['Expense' => 385.50], $summary['expenseCategories']);
+        $this->assertArrayNotHasKey('Purchase', $summary['expenseCategories']);
+    }
 }