51 lines
1.4 KiB
PHP
51 lines
1.4 KiB
PHP
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<?php
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class RsvMembershipService {
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/**
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* Total membership discount for a submission.
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*
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* Each binding names a form field whose submitted value must match a key
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* in the bound program. Matching bindings' discounts are combined per the
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* definition's combine mode: the best single discount, or all summed and
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* capped at 100%.
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*/
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public function discount_for(RsvFormDefinition $def, RsvFormData $data): float {
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$repo = new RsvMembershipProgramRepository();
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$matched_discounts = [];
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foreach ($def->getMembershipBindings() as $binding) {
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$program_id = intval($binding['program_id'] ?? 0);
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$discount = floatval($binding['discount'] ?? 0.0);
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$field = strval($binding['field'] ?? '');
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if ($program_id <= 0 || $field === '') {
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continue;
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}
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$raw = $data->getValue($field, '');
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$value = is_scalar($raw) ? trim((string) $raw) : '';
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if ($value === '') {
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continue;
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}
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if ($repo->key_exists($program_id, $value)) {
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$matched_discounts[] = $discount;
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}
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}
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if (empty($matched_discounts)) {
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return 0.0;
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}
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if ($def->getMembershipCombine() === 'sum') {
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return min(100.0, array_sum($matched_discounts));
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}
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return max($matched_discounts);
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}
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}
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