fix enrollment logic, add financial aid, fix class distribution

app/Libraries/Tuition/GradeLevelParser.php

@@ -37,4 +37,17 @@ final class GradeLevelParser
 
         return 999;
     }
+
+    public static function isYouth($grade): bool
+    {
+        if (! is_string($grade) && ! is_numeric($grade)) {
+            return false;
+        }
+
+        $value = strtoupper(trim((string) $grade));
+        $value = preg_replace('/\s+/', ' ', $value) ?? $value;
+        $value = str_replace(['.', '_', '-'], ['', '', ' '], $value);
+
+        return (bool) preg_match('/^Y(?:OUTH)?\s*\d*$/', $value);
+    }
 }

app/Libraries/Tuition/NewTuitionCalculatorService.php

@@ -9,11 +9,8 @@ final class NewTuitionCalculatorService implements TuitionCalculatorInterface
     public function calculateFamilyTuition(array $students, array $config): array
     {
         $gradeFee = (int) ($config['grade_fee'] ?? 9);
-        $fullAmountCents = $this->toCents($config['new_tuition_full_amount'] ?? 370);
-        $youthAmountCents = $this->toCents($config['new_tuition_youth_amount'] ?? $config['youth_fee'] ?? 200);
-        $secondDiscountCents = $this->toCents($config['new_tuition_second_student_discount'] ?? 50);
-        $thirdDiscountCents = $this->toCents($config['new_tuition_third_student_discount'] ?? 50);
-        $fourthPlusDiscountCents = $this->toCents($config['new_tuition_fourth_plus_discount'] ?? 100);
+        $fullAmountCents = $this->toCents($config['new_tuition_full_amount'] ?? $config['first_student_fee'] ?? 380);
+        $additionalDiscountCents = $this->additionalDiscountCents($config, $fullAmountCents);
 
         usort($students, function (array $left, array $right) use ($gradeFee): int {
             $leftLevel = GradeLevelParser::parse($left['grade_level'] ?? null, $gradeFee);
@@ -23,45 +20,20 @@ final class NewTuitionCalculatorService implements TuitionCalculatorInterface
         });
 
         $details = [];
-        $regularPosition = 0;
+        $familyPosition = 0;
 
         foreach (array_values($students) as $student) {
-            $level = GradeLevelParser::parse($student['grade_level'] ?? null, $gradeFee);
-
-            if ($level > $gradeFee) {
-                $position = null;
-                $discountCents = 0;
-                $rule = 'new_youth_unit_price';
-                $baseAmountCents = $youthAmountCents;
-            } else {
-                $regularPosition++;
-                $position = $regularPosition;
-
-                if ($position === 1) {
-                    $discountCents = 0;
-                    $rule = 'new_first_student_full_amount';
-                } elseif ($position === 2) {
-                    $discountCents = $secondDiscountCents;
-                    $rule = 'new_second_student_discount';
-                } elseif ($position === 3) {
-                    $discountCents = $thirdDiscountCents;
-                    $rule = 'new_third_student_discount';
-                } else {
-                    $discountCents = $fourthPlusDiscountCents;
-                    $rule = 'new_fourth_plus_student_discount';
-                }
-
-                $baseAmountCents = $fullAmountCents;
-            }
-
-            $amountCents = max(0, $baseAmountCents - $discountCents);
+            $familyPosition++;
+            $discountCents = $familyPosition === 1 ? 0 : $additionalDiscountCents;
+            $rule = $familyPosition === 1 ? 'new_first_student_full_amount' : 'new_additional_student_discount';
+            $amountCents = max(0, $fullAmountCents - $discountCents);
 
             $details[] = [
                 'student_id' => (int) ($student['student_id'] ?? 0),
                 'student_name' => (string) ($student['student_name'] ?? ''),
                 'grade_level' => $student['grade_level'] ?? null,
-                'family_position' => $position,
-                'full_amount' => $this->fromCents($baseAmountCents),
+                'family_position' => $familyPosition,
+                'full_amount' => $this->fromCents($fullAmountCents),
                 'discount' => $this->fromCents($discountCents),
                 'rule' => $rule,
                 'amount' => $this->fromCents($amountCents),
@@ -77,6 +49,19 @@ final class NewTuitionCalculatorService implements TuitionCalculatorInterface
         ];
     }
 
+    private function additionalDiscountCents(array $config, int $fullAmountCents): int
+    {
+        if (array_key_exists('new_tuition_second_student_discount', $config) && $config['new_tuition_second_student_discount'] !== null && $config['new_tuition_second_student_discount'] !== '') {
+            return $this->toCents($config['new_tuition_second_student_discount']);
+        }
+
+        if (array_key_exists('second_student_fee', $config) && $config['second_student_fee'] !== null && $config['second_student_fee'] !== '') {
+            return max(0, $fullAmountCents - $this->toCents($config['second_student_fee']));
+        }
+
+        return $this->toCents(100);
+    }
+
     private function toCents($amount): int
     {
         return (int) round(((float) $amount) * 100);

app/Libraries/Tuition/OldTuitionCalculatorService.php

@@ -9,9 +9,10 @@ final class OldTuitionCalculatorService implements TuitionCalculatorInterface
     public function calculateFamilyTuition(array $students, array $config): array
     {
         $gradeFee = (int) ($config['grade_fee'] ?? 9);
-        $firstStudentFee = $this->toCents($config['first_student_fee'] ?? 370);
-        $secondStudentFee = $this->toCents($config['second_student_fee'] ?? 200);
-        $youthFee = $this->toCents($config['youth_fee'] ?? 200);
+        $firstStudentFee = $this->toCents($config['first_student_fee'] ?? $config['new_tuition_full_amount'] ?? 380);
+        $secondStudentFee = isset($config['second_student_fee']) && $config['second_student_fee'] !== '' && $config['second_student_fee'] !== null
+            ? $this->toCents($config['second_student_fee'])
+            : max(0, $firstStudentFee - 10000);
 
         usort($students, function (array $left, array $right) use ($gradeFee): int {
             $leftLevel = GradeLevelParser::parse($left['grade_level'] ?? null, $gradeFee);
@@ -20,20 +21,13 @@ final class OldTuitionCalculatorService implements TuitionCalculatorInterface
             return [$leftLevel, (int) ($left['student_id'] ?? 0)] <=> [$rightLevel, (int) ($right['student_id'] ?? 0)];
         });
 
-        $regularCount = 0;
+        $familyPosition = 0;
         $details = [];
 
         foreach ($students as $student) {
-            $level = GradeLevelParser::parse($student['grade_level'] ?? null, $gradeFee);
-
-            if ($level > $gradeFee) {
-                $amountCents = $youthFee;
-                $rule = 'old_youth_fee';
-            } else {
-                $regularCount++;
-                $amountCents = $regularCount === 1 ? $firstStudentFee : $secondStudentFee;
-                $rule = $regularCount === 1 ? 'old_first_student_fee' : 'old_second_student_fee';
-            }
+            $familyPosition++;
+            $amountCents = $familyPosition === 1 ? $firstStudentFee : $secondStudentFee;
+            $rule = $familyPosition === 1 ? 'old_first_student_fee' : 'old_additional_student_fee';
 
             $details[] = [
                 'student_id' => (int) ($student['student_id'] ?? 0),

app/Libraries/Tuition/TuitionForecastService.php

@@ -43,7 +43,6 @@ class TuitionForecastService
         $mode = $this->normalizeMode($mode);
         $options = $this->normalizeOptions($options);
         $this->unitPriceOverride = $options['unit_price'];
-        $this->youthUnitPriceOverride = $options['youth_unit_price'];
         $tuitionConfig = $this->getTuitionConfig();
         $familyRows = [];
         $summary = [
@@ -119,7 +118,7 @@ class TuitionForecastService
         $summary['projected_tuition'] = $mode === 'old' ? $summary['old_projected_tuition'] : $summary['new_projected_tuition'];
         $summary['projected_income'] = $mode === 'old' ? $summary['old_projected_income'] : $summary['new_projected_income'];
         $summary['unit_price'] = number_format((float) ($tuitionConfig['new_tuition_full_amount'] ?? 0), 2, '.', '');
-        $summary['youth_unit_price'] = number_format((float) ($tuitionConfig['new_tuition_youth_amount'] ?? 0), 2, '.', '');
+        $summary['youth_unit_price'] = $summary['unit_price'];
 
         return [
             'school_year' => $schoolYear,
@@ -545,32 +544,18 @@ class TuitionForecastService
             'grade_fee' => $this->configurationModel->getConfig('grade_fee'),
             'first_student_fee' => $this->configurationModel->getConfig('first_student_fee'),
             'second_student_fee' => $this->configurationModel->getConfig('second_student_fee'),
-            'youth_fee' => $this->configurationModel->getConfig('youth_fee') ?? '200.00',
+            'youth_fee' => $this->configurationModel->getConfig('first_student_fee') ?? '380.00',
             'new_tuition_full_amount' => $this->normalizedUnitPriceOverride(),
-            'new_tuition_youth_amount' => $this->normalizedYouthUnitPriceOverride(),
-            'new_tuition_second_student_discount' => $this->configurationModel->getConfig('new_tuition_second_student_discount'),
-            'new_tuition_third_student_discount' => $this->configurationModel->getConfig('new_tuition_third_student_discount'),
-            'new_tuition_fourth_plus_discount' => $this->configurationModel->getConfig('new_tuition_fourth_plus_discount'),
+            'new_tuition_second_student_discount' => $this->configurationModel->getConfig('new_tuition_second_student_discount') ?? '100.00',
         ];
     }
 
     protected ?string $unitPriceOverride = null;
-    protected ?string $youthUnitPriceOverride = null;
 
     protected function normalizedUnitPriceOverride(): string
     {
         return $this->unitPriceOverride
-            ?? (string) ($this->configurationModel->getConfig('new_tuition_full_amount') ?? '0.00');
-    }
-
-    protected function normalizedYouthUnitPriceOverride(): string
-    {
-        return $this->youthUnitPriceOverride
-            ?? (string) (
-                $this->configurationModel->getConfig('new_tuition_youth_amount')
-                ?? $this->configurationModel->getConfig('youth_fee')
-                ?? '200.00'
-            );
+            ?? (string) ($this->configurationModel->getConfig('new_tuition_full_amount') ?? '380.00');
     }
 
     protected function normalizeMoney($value): ?string