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Discount Rules for WooCommerce – Disco | Dynamic Pricing, Conditions, Bulk, Bundle, BOGO / 1.4.20
Discount Rules for WooCommerce – Disco | Dynamic Pricing, Conditions, Bulk, Bundle, BOGO v1.4.20
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← All changes | app/Intents/IntentHelper.php +892 -89 1.3.54 → 1.4.20 View file →
@@ -14,8 +14,9 @@
14 14 use Disco\App\Campaign;
15 15 use Disco\App\Features\UserLimit;
16 16 use Disco\App\Utility\Config;
17 17 use Disco\App\Utility\Helper;
18 +use Disco\App\Utility\QuantityCounter;
18 19 use Disco\App\Utility\Settings;
19 20
20 21 /**
21 22 * This Class contains all the common function for cart related intents,
@@ -250,17 +251,39 @@
250 251 public function calculate_discount( $cost, $discount_type, $discount_value ) {
251 252 $cost = (float) $cost;
252 253 $discount_value = (float) $discount_value;
253 254
254 - if ( 'percent' === $discount_type ) {
255 - $cost = $cost * $discount_value / 100;
256 - }
255 + switch ( $discount_type ) {
256 + case 'percent':
257 + return $cost * $discount_value / 100;
257 258
258 - if ( 'fixed' === $discount_type || 'fixed_per_product' === $discount_type ) {
259 - $cost = $discount_value;
260 - }
259 + case 'fixed':
260 + case 'fixed_per_product':
261 + return $discount_value;
261 262
262 - return $cost;
263 + case 'free':
264 + // The whole cost comes off, which is what makes the item free.
265 + return $cost;
266 +
267 + default:
268 + /**
269 + * Anything else discounts nothing.
270 + *
271 + * This used to fall through and return $cost untouched, which the
272 + * callers then treat as the discount: ProductIntent hands it the
273 + * product price and CartIntent the cart subtotal, so an
274 + * unrecognised type gave away the product or the entire cart.
275 + *
276 + * Only Bulk, Bundle and BOGO route through the Calc classes,
277 + * where every type has an implementation; Product and Cart come
278 + * straight here, so the gap was reachable by any rule carrying a
279 + * type this method does not know: a campaign saved while
280 + * fixed_price and percent_per_product were still offered in the
281 + * builder, a REST write (discount_type inside discount_rules is
282 + * not validated), or a hand edited row.
283 + */
284 + return 0.0;
285 + }//end switch
263 286 }
264 287
265 288 /**
266 289 * Get the discounted price.
@@ -379,24 +402,58 @@
379 402 if ( empty( $items ) ) {
380 403 return $discounts;
381 404 }
382 405
406 + if ( ! is_array( $rules ) || empty( $rules ) ) {
407 + return $discounts;
408 + }
409 +
383 410 /**
411 + * BuyXGetY tiers are mutually exclusive: only one rule applies per
412 + * campaign, selected by the buy quantity. Without this, tiers rewarding
413 + * different get-products (e.g. rule 1 → product A, rule 2 → product B)
414 + * would all fire and stack. Every other intent already collapses
415 + * overlapping rules per product via min_max_average.
416 + *
417 + * Exception: a free products BOGO in `separate` mode is evaluated
418 + * per-product (each cart product uses the tier(s) its own quantity
419 + * matches), so all rules are kept and the reward is summed downstream.
420 + */
421 + if ( 'BuyXGetY' === $campaign->get_discount_intent() && ! $this->is_per_product_free_bogo( $campaign, $rules ) ) {
422 + $rules = $this->select_bogo_tier_rule( $campaign, $rules );
423 +
424 + if ( empty( $rules ) ) {
425 + return $discounts;
426 + }
427 + }
428 +
429 + /**
384 430 * Combined qualifying quantity for recursive BOGO, filtered by the
385 431 * conditions and few-products filters and excluding Disco free items.
386 432 */
387 433 $total_applicable_qty = $this->get_total_applicable_quantity( $cart, $campaign );
388 434
435 + /**
436 + * "Count Quantity As" combined / variations modes pool quantities across
437 + * cart line items before deciding eligibility, so they take a dedicated
438 + * path. The default `separate` mode keeps the original per-line behaviour.
439 + *
440 + * BOGO is excluded — count modes only apply to Bundle / Bulk:
441 + * - BuyXGetX matches purely on each line's own quantity, so it always
442 + * behaves as `separate` regardless of the count mode.
443 + * - BuyXGetY rewards the Y (get) product, not the counted X products, so
444 + * it stays on the per-item path and only its buy-X gate is pooled
445 + * (see {@see self::verify_xproduct_cart_rule()}).
446 + */
447 + if (
448 + ! in_array( $campaign->get_discount_intent(), array( 'BuyXGetX', 'BuyXGetY' ), true )
449 + && in_array( $campaign->get_count_quantity_as(), array( 'combined', 'variations' ), true )
450 + ) {
451 + return $this->get_grouped_item_discounts( $campaign, $cart, $rules, $total_applicable_qty );
452 + }
453 +
389 454 // Loop through the cart items.
390 455 foreach ( $items as $item ) {
391 - // Get the item object.
392 - $item_objet = $item['data'];
393 -
394 - // Check if the campaign has rules.
395 - if ( ! is_array( $rules ) || empty( $rules ) ) {
396 - continue;
397 - }
398 -
399 456 // Loop through the discount rules.
400 457 foreach ( $rules as $rule ) {
401 458 if ( is_object( $rule ) ) {
402 459 $rule = (array) $rule;
@@ -406,61 +463,225 @@
406 463 if ( ! $this->verify_rules( $campaign, $item, $rule ) ) {
407 464 continue;
408 465 }
409 466
410 - $r = md5( microtime() . wp_rand() );
411 - $id = $this->get_cart_item_id( $item );
467 + $this->apply_rule_to_discount( $discounts, $campaign, $rule, $item, $cart, $total_applicable_qty );
468 + }//end foreach
469 + }//end foreach
412 470
413 - // Set the discount array.
414 - $discounts[ $id ]['original_price'] = $item_objet->get_price();
415 - $discounts[ $id ]['cart_item_key'] = $item['key'];
471 + return $discounts;
472 + }
416 473
417 - // Set discount applies to
418 - $discounts[ $id ]['discount_applies_to'][ $r ] = CalcFactory::discount_applies_to( $rule, $campaign );
474 + /**
475 + * Prepare discounts for the `combined` / `variations` counting modes.
476 + *
477 + * Eligibility is resolved by {@see QuantityCounter}: quantities are pooled
478 + * per group (all applicable lines for `combined`, per parent product for
479 + * `variations`), range-capped, and threaded into the Calc layer through the
480 + * `disco_forced_qty` item key.
481 + *
482 + * How many units are actually discounted depends on the rule:
483 + * - Bundle / Bulk (no `get_quantity`) → every qualifying unit is discounted.
484 + * - BOGO (`get_quantity` set) → only the reward units are discounted,
485 + * i.e. `get_quantity × bundles`, where `bundles = floor(pool / min)`
486 + * (1 for a non-recursive rule). Otherwise a "buy 2 get 1" in combined mode
487 + * would wrongly discount the 2 bought units instead of the 1 reward unit.
488 + * Reward units are handed out across the eligible lines in cart order.
489 + *
490 + * @param \Disco\App\Utility\Config $campaign Campaign Config.
491 + * @param \WC_Cart $cart Cart Object.
492 + * @param array $rules Discount rules.
493 + * @param int $total_applicable_qty Combined qualifying quantity.
494 + */
495 + private function get_grouped_item_discounts( Config $campaign, \WC_Cart $cart, array $rules, int $total_applicable_qty ): array {//phpcs:ignore
496 + $discounts = array();
497 + $quantity_counter = new QuantityCounter;
419 498
420 - // Set Discounts.
421 - if ( $rule['discount_type'] === 'free' ) {
422 - $discounted_amount = array(
423 - 'price' => $item_objet->get_price(),
424 - 'discount' => 0,
425 - 'line_subtotal' => $item_objet->get_price() * $item['quantity'],
426 - 'discounted_quantities' => 0,
427 - );
428 - $discounts[ $id ]['free'] = true;
429 - $discounts[ $id ]['get_ids'] = $rule['get_ids'];
430 - $discounts[ $id ]['get_qty'] = CalcFactory::get_free_quantity( $rule, $item );
499 + foreach ( $rules as $rule ) {
500 + if ( is_object( $rule ) ) {
501 + $rule = (array) $rule;
502 + }
431 503
504 + $eligible_lines = $quantity_counter->get_eligible_units( $cart, $campaign, $rule );
505 +
506 + if ( empty( $eligible_lines ) ) {
507 + continue;
508 + }
509 +
510 + // Total qualifying units across the pooled lines.
511 + $total_qualifying_units = 0;
512 +
513 + foreach ( $eligible_lines as $eligible_line ) {
514 + $total_qualifying_units += $eligible_line['eligible_qty'];
515 + }
516 +
517 + $discountable_units = $this->grouped_discount_budget( $rule, $total_qualifying_units );
518 +
519 + /**
520 + * A flat amount is charged for the pooled group as a whole.
521 + *
522 + * Pooling exists so the cart together can reach the tier minimum, so
523 + * the rule qualifies for the group rather than for each line that
524 + * contributed quantity. The Calc layer returns the rule value whole
525 + * for every line it is handed, because a flat amount does not scale
526 + * with units, so spreading it across lines multiplied the discount by
527 + * the line count: a flat 10 came out as 20 over two lines.
528 + *
529 + * It is applied to the first eligible line carrying the entire pooled
530 + * budget, which is what lets a recursive rule still charge once per
531 + * bundle: the Calc layer derives the bundle count from that quantity.
532 + * Per unit types keep every line, since their amount is meant to
533 + * scale with the units.
534 + */
535 + if ( in_array( $rule['discount_type'], array( 'fixed', 'fixed_price' ), true ) ) {
536 + $first_line = reset( $eligible_lines );
537 +
538 + if ( ! empty( $first_line['item'] ) && $discountable_units > 0 ) {
539 + $item = $first_line['item'];
540 + $item['disco_forced_qty'] = $discountable_units;
541 +
542 + $this->apply_rule_to_discount( $discounts, $campaign, $rule, $item, $cart, $total_applicable_qty );
543 + }
544 +
545 + continue;
546 + }
547 +
548 + // Hand out the discountable units across the eligible lines in cart order.
549 + foreach ( $eligible_lines as $eligible_line ) {
550 + if ( $discountable_units <= 0 ) {
551 + break;
552 + }
553 +
554 + $line_units = (int) min( $eligible_line['eligible_qty'], $discountable_units );
555 +
556 + if ( $line_units <= 0 ) {
557 + continue;
558 + }
559 +
560 + $discountable_units -= $line_units;
561 +
562 + $item = $eligible_line['item'];
563 + $item['disco_forced_qty'] = $line_units;
564 +
565 + $this->apply_rule_to_discount( $discounts, $campaign, $rule, $item, $cart, $total_applicable_qty );
566 + }
567 + }
568 +
569 + return $discounts;
570 + }
571 +
572 + /**
573 + * Number of units a pooled rule should actually discount.
574 + *
575 + * BOGO rules (with `get_quantity`) reward `get_quantity × bundles`; every
576 + * other rule discounts the whole qualifying pool.
577 + *
578 + * @param array $rule Discount rule.
579 + * @param int $total_qualifying Pooled qualifying quantity.
580 + */
581 + private function grouped_discount_budget( array $rule, int $total_qualifying ): int {
582 + $reward_quantity = ! empty( $rule['get_quantity'] ) ? (int) $rule['get_quantity'] : 0; // phpcs:ignore
583 +
584 + if ( $reward_quantity <= 0 ) {
585 + // Bundle / Bulk: discount every qualifying unit.
586 + return $total_qualifying;
587 + }
588 +
589 + $minimum_quantity = isset( $rule['min'] ) ? absint( $rule['min'] ) : 0; // phpcs:ignore
590 + $bundle_count = $minimum_quantity > 0 ? (int) floor( $total_qualifying / $minimum_quantity ) : 1; // phpcs:ignore
591 +
592 + if ( $bundle_count < 1 ) {
593 + $bundle_count = 1;
594 + }
595 +
596 + // BOGO reward: get_quantity per qualifying bundle, never more than the pool.
597 + return (int) min( $reward_quantity * $bundle_count, $total_qualifying );
598 + }
599 +
600 + /**
601 + * Populate the discount array for a single cart line + rule pair.
602 + *
603 + * Shared by both the per-line (`separate`) path and the grouped
604 + * (`combined` / `variations`) path so the emitted discount structure is
605 + * identical regardless of counting mode.
606 + *
607 + * @param array $discounts Discount array, by reference.
608 + * @param \Disco\App\Utility\Config $campaign Campaign Config.
609 + * @param array $rule Single discount rule.
610 + * @param array $item Cart item (may carry `disco_forced_qty`).
611 + * @param \WC_Cart $cart Cart Object.
612 + * @param int $total_applicable_qty Combined qualifying quantity.
613 + */
614 + private function apply_rule_to_discount( array &$discounts, Config $campaign, array $rule, array $item, \WC_Cart $cart, int $total_applicable_qty ): void {//phpcs:ignore
615 + $product = $item['data'];
616 + $rule_key = md5( microtime() . wp_rand() );
617 + $effective_product_id = $this->get_cart_item_id( $item );
618 +
619 + // Set the discount array.
620 + $discounts[ $effective_product_id ]['original_price'] = $product->get_price();
621 + $discounts[ $effective_product_id ]['cart_item_key'] = $item['key'];
622 +
623 + // Set discount applies to
624 + $discounts[ $effective_product_id ]['discount_applies_to'][ $rule_key ] = CalcFactory::discount_applies_to( $rule, $campaign );
625 +
626 + // Set Discounts.
627 + if ( $rule['discount_type'] === 'free' ) {
628 + $discounted_amount = array(
629 + 'price' => $product->get_price(),
630 + 'discount' => 0,
631 + 'line_subtotal' => $product->get_price() * $item['quantity'],
632 + 'discounted_quantities' => 0,
633 + );
634 + $discounts[ $effective_product_id ]['free'] = true;
635 + $discounts[ $effective_product_id ]['get_ids'] = $rule['get_ids'];
636 +
637 + if ( 'products' === $campaign->get_bogo_type() ) {
638 + if ( in_array( $campaign->get_count_quantity_as(), array( 'combined', 'variations' ), true ) ) {
432 639 /**
433 - * Recursive BOGO (any bogo type): base the free quantity on the
434 - * combined qualifying quantity instead of this single line, so a
435 - * cart whose qualifying quantity totals 4 grants 4 free items.
640 + * Combined / variations: the buy-X quantity is pooled across
641 + * the cart, so the reward is one bundle (non-recursive) or one
642 + * per bundle (recursive) of the pooled total — not per line.
436 643 */
437 - if ( 'yes' === $rule['recursive'] && (int) $rule['min'] > 0 ) {
438 - $discounts[ $id ]['get_qty'] = (int) floor( $total_applicable_qty / (int) $rule['min'] ) * (int) $rule['get_quantity'];
644 + $minimum_quantity = isset( $rule['min'] ) ? absint( $rule['min'] ) : 0; // phpcs:ignore
645 + $reward_quantity = ! empty( $rule['get_quantity'] ) ? (int) $rule['get_quantity'] : 0; // phpcs:ignore
646 +
647 + if ( 'yes' === $rule['recursive'] && $minimum_quantity > 0 ) {
648 + $discounts[ $effective_product_id ]['get_qty'] = (int) floor( $total_applicable_qty / $minimum_quantity ) * $reward_quantity;
649 + } else {
650 + $discounts[ $effective_product_id ]['get_qty'] = $reward_quantity;
439 651 }
440 652 } else {
441 - $discounted_amount = CalcFactory::get_discount( $rule, $item, $cart, $campaign );
442 - $discounts[ $id ]['free'] = false;
443 - $discounts[ $id ]['get_ids'] = array();
444 - $discounts[ $id ]['get_qty'] = 0;
653 + /**
654 + * Separate: X = all products. Every cart product grants the
655 + * reward of each tier its own quantity matches (summed), so
656 + * two products matching different tiers each contribute.
657 + */
658 + $discounts[ $effective_product_id ]['get_qty'] = $this->get_products_bogo_free_quantity( $campaign, $cart );
445 659 }
660 + } else {
661 + /**
662 + * BuyXGetX ('all'): per line, recursive → floor( line qty / min ) ×
663 + * get_quantity. Category BOGO never reaches this — its free items are
664 + * owned by {@see \Disco\App\Intents\CategoryBogo\CategoryBogo}.
665 + */
666 + $discounts[ $effective_product_id ]['get_qty'] = CalcFactory::get_free_quantity( $rule, $item );
667 + }
668 + } else {
669 + $discounted_amount = CalcFactory::get_discount( $rule, $item, $cart, $campaign );
670 + $discounts[ $effective_product_id ]['free'] = false;
671 + $discounts[ $effective_product_id ]['get_ids'] = array();
672 + $discounts[ $effective_product_id ]['get_qty'] = 0;
673 + }
446 674
447 - // $discounts[ $id ]['get_ids'] = array_values( $rule['get_ids'] );
675 + $discounts[ $effective_product_id ]['discount_types'][ $rule_key ] = $rule['discount_type'];
676 + $discounts[ $effective_product_id ]['intent'][ $rule_key ] = $campaign->get_discount_intent();
677 + $discounts[ $effective_product_id ]['prices'][ $rule_key ] = $discounted_amount['price'];
678 + $discounts[ $effective_product_id ]['discounts'][ $rule_key ] = $discounted_amount['discount'];
679 + $discounts[ $effective_product_id ]['subtotals'][ $rule_key ] = $discounted_amount['line_subtotal'];
680 + $discounts[ $effective_product_id ]['discounted_quantities'][ $rule_key ] = $discounted_amount['discounted_quantities'];
681 + $discounts[ $effective_product_id ]['quantities'][ $rule_key ] = $item['quantity'];
448 682
449 - $discounts[ $id ]['discount_types'][ $r ] = $rule['discount_type'];
450 - $discounts[ $id ]['intent'][ $r ] = $campaign->get_discount_intent();
451 - $discounts[ $id ]['prices'][ $r ] = $discounted_amount['price'];
452 - $discounts[ $id ]['discounts'][ $r ] = $discounted_amount['discount'];
453 - $discounts[ $id ]['subtotals'][ $r ] = $discounted_amount['line_subtotal'];
454 - $discounts[ $id ]['discounted_quantities'][ $r ] = $discounted_amount['discounted_quantities'];
455 - $discounts[ $id ]['quantities'][ $r ] = $item['quantity'];
456 - $offers = $this->get_item_offers( $rule );
457 -
458 - $discounts[ $id ]['offers'][ $r ] = $offers;
459 - }//end foreach
460 - }//end foreach
461 -
462 - return $discounts;
683 + $discounts[ $effective_product_id ]['offers'][ $rule_key ] = $this->get_item_offers( $rule );
463 684 }
464 685
465 686 /**
466 687 * Prepare discounts for cart items.
@@ -482,12 +703,9 @@
482 703 * Get a discount limit form campaign.
483 704 *
484 705 * Compare with total product meta and apply discount
485 706 */
486 - $discount_limit = $intent->campaign->discount_max_user;
487 - $total_applied_campaign = ( new UserLimit )->disco_get_total_applied_campaign( $intent->campaign->id );
488 -
489 - if ( ! empty( $discount_limit ) && ( $discount_limit >= 0 && $total_applied_campaign >= $discount_limit ) ) {
707 + if ( ( new UserLimit )->disco_is_limit_reached( $intent->campaign ) ) {
490 708 continue;
491 709 }
492 710
493 711 $items = $this->get_items_for_discount( $cart, $intent->campaign );
@@ -496,13 +714,19 @@
496 714 if ( empty( $get_discounts ) ) {
497 715 continue;
498 716 }
499 717
500 - // Only stage campaigns whose discount actually applied to the cart.
501 - ( new UserLimit )->disco_start_session_on_checkout( $intent->campaign->id );
502 -
503 718 foreach ( $get_discounts as $item_id => $discount ) {
719 + /**
720 + * Keep the campaign alongside its amount at the same index.
721 + *
722 + * Staging cannot happen yet: several campaigns can offer an amount
723 + * for the same item and only one of them survives the min/max
724 + * reduction below. Crediting every campaign here would consume the
725 + * usage limit of campaigns whose discount never reached the cart.
726 + */
504 727 $discounts[ $item_id ]['discounts'][] = max( $discount['discounts'] );
728 + $discounts[ $item_id ]['campaigns'][] = (int) $intent->campaign->id;
505 729 }
506 730 }
507 731
508 732 // Check if the discounts are empty.
@@ -509,13 +733,27 @@
509 733 if ( empty( $discounts ) ) {
510 734 return false;
511 735 }
512 736
737 + $applied_campaign_ids = array();
738 +
513 739 // Get the min or max discount amount for each item.
514 740 foreach ( $discounts as $item_id => $discount ) {
515 - $discounts[ $item_id ] = $this->min_max_average( $discount['discounts'] );
741 + $winning_amount = $this->min_max_average( $discount['discounts'] );
742 + $winning_index = array_search( $winning_amount, $discount['discounts'], true );
743 +
744 + if ( false !== $winning_index && isset( $discount['campaigns'][ $winning_index ] ) ) {
745 + $applied_campaign_ids[ $discount['campaigns'][ $winning_index ] ] = true;
746 + }
747 +
748 + $discounts[ $item_id ] = $winning_amount;
516 749 }
517 750
751 + // Stage only the campaigns that actually won an item.
752 + foreach ( array_keys( $applied_campaign_ids ) as $applied_campaign_id ) {
753 + ( new UserLimit )->disco_start_session_on_checkout( $applied_campaign_id );
754 + }
755 +
518 756 return $discounts;
519 757 }
520 758
521 759 /**
@@ -523,11 +761,11 @@
523 761 *
524 762 * @param array $intents Intents.
525 763 * @param \WC_Cart $cart Cart.
526 764 * @param array $discounts Discounts.
527 - * @return int|null
765 + * @return int|string|null
528 766 */
529 - public function get_valid_bogo_category_item_id( array $intents, \WC_Cart $cart, array $discounts ) {
767 + public function get_valid_bogo_category_item_id( array $intents, \WC_Cart $cart, array $discounts ) {//phpcs:ignore
530 768 foreach ( $intents as $intent ) {
531 769 if (
532 770 $intent->campaign->get_discount_intent() !== 'BuyXGetY' ||
533 771 $intent->campaign->get_bogo_type() !== 'categories'
@@ -534,15 +772,25 @@
534 772 ) {
535 773 continue;
536 774 }
537 775
776 + // Collect every eligible category item (in cart order) with its price,
777 + // then pick the reward item per the campaign's selection strategy.
778 + $candidates = array();
779 +
538 780 foreach ( $cart->get_cart() as $item ) {
539 - $item_id = $this->get_cart_item_id( $item );
781 + $cart_item_id = $this->get_cart_item_id( $item );
540 782
541 - if ( isset( $discounts[ $item_id ] ) && $discounts[ $item_id ] > 0 ) {
542 - return $item_id;
783 + if ( isset( $discounts[ $cart_item_id ] ) && $discounts[ $cart_item_id ] > 0 ) { // phpcs:ignore
784 + $candidates[ $cart_item_id ] = CalcFactory::get_price( $item );
543 785 }
544 786 }
787 +
788 + if ( empty( $candidates ) ) {
789 + continue;
790 + }
791 +
792 + return $this->pick_reward_item( $candidates, $intent->campaign->get_free_item_selection() );
545 793 }
546 794
547 795 return null;
548 796 }
@@ -547,8 +795,34 @@
547 795 return null;
548 796 }
549 797
550 798 /**
799 + * Pick the reward cart-item id from eligible candidates.
800 + *
801 + * Honours the "Free Item Selection" strategy when more than one product
802 + * from the reward category is in the cart:
803 + * - `cart_order` (default) → the first eligible item in cart order.
804 + * - `lowest` → the lowest-priced eligible item.
805 + * - `highest` → the highest-priced eligible item.
806 + * Ties keep cart order (first match wins).
807 + *
808 + * @param array<int|string, float> $candidates Map of item id => price, in cart order.
809 + * @param string $selection Selection strategy.
810 + * @return int|string|null
811 + */
812 + private function pick_reward_item( array $candidates, string $selection ) {
813 + if ( 'lowest' === $selection ) {
814 + return array_keys( $candidates, min( $candidates ), true )[0];
815 + }
816 +
817 + if ( 'highest' === $selection ) {
818 + return array_keys( $candidates, max( $candidates ), true )[0];
819 + }
820 +
821 + return array_key_first( $candidates );
822 + }
823 +
824 + /**
551 825 * Prepare discounts for cart items.
552 826 *
553 827 * @param array $intents Intents.
554 828 * @param \WC_Cart $cart Cart.
@@ -558,9 +832,10 @@
558 832 if ( empty( $intents ) ) {
559 833 return false;
560 834 }
561 835
562 - $discounts = array();
836 + $discounts = array();
837 + $candidate_campaign_ids = array();
563 838
564 839 // Loop through the intents.
565 840 foreach ( $intents as $intent ) {
566 841 /**
@@ -567,12 +842,9 @@
567 842 * Get a discount limit form campaign.
568 843 *
569 844 * Compare with total product meta and apply discount
570 845 */
571 - $discount_limit = $intent->campaign->discount_max_user;
572 - $total_applied_campaign = ( new UserLimit )->disco_get_total_applied_campaign( $intent->campaign->id );
573 -
574 - if ( ! empty( $discount_limit ) && ( $discount_limit >= 0 && $total_applied_campaign >= $discount_limit ) ) {
846 + if ( ( new UserLimit )->disco_is_limit_reached( $intent->campaign ) ) {
575 847 continue;
576 848 }
577 849
578 850 $items = $this->get_items_for_discount( $cart, $intent->campaign );
@@ -581,17 +853,26 @@
581 853 if ( empty( $get_discounts ) ) {
582 854 continue;
583 855 }
584 856
585 - // Only stage campaigns whose discount actually applied to the cart.
586 - ( new UserLimit )->disco_start_session_on_checkout( $intent->campaign->id );
857 + /**
858 + * Collect the campaign now, stage it later.
859 + *
860 + * What this method finally grants is decided well below: the rewards
861 + * are unioned across campaigns and a BuyXGetY (products) campaign can
862 + * then override the whole result authoritatively. Crediting a campaign
863 + * here would consume its usage limit even when the final result grants
864 + * it nothing.
865 + */
866 + $candidate_campaign_ids[] = (int) $intent->campaign->id;
587 867
588 868 foreach ( $get_discounts as $item_id => $discount ) {
589 - $discounts[ $item_id ]['discounts'][] = max( $discount['discounts'] );
590 - $discounts[ $item_id ]['free'] = $discount['free'];
591 - $discounts[ $item_id ]['get_ids'] = $discount['get_ids'];
592 - $discounts[ $item_id ]['get_qty'] = $discount['get_qty'];
593 - $discounts[ $item_id ]['bogo_type'] = $intent->campaign->get_bogo_type();
869 + $discounts[ $item_id ]['discounts'][] = max( $discount['discounts'] ); // phpcs:ignore
870 + $discounts[ $item_id ]['free'] = $discount['free']; // phpcs:ignore
871 + $discounts[ $item_id ]['get_ids'] = $discount['get_ids']; // phpcs:ignore
872 + $discounts[ $item_id ]['get_qty'] = $discount['get_qty']; // phpcs:ignore
873 + $discounts[ $item_id ]['bogo_type'] = $intent->campaign->get_bogo_type(); // phpcs:ignore
874 + $discounts[ $item_id ]['free_item_selection'] = $intent->campaign->get_free_item_selection(); // phpcs:ignore
594 875 }
595 876 }
596 877
597 878 // Check if the discounts are empty.
@@ -598,26 +879,309 @@
598 879 if ( empty( $discounts ) ) {
599 880 return false;
600 881 }
601 882
602 - // Get the min or max discount amount for each item.
883 + /**
884 + * Aggregate the per-item free rewards into the flat shape the cart hook
885 + * consumes. Union every qualifying reward id (previously this overwrote
886 + * on each pass, so only the last cart item was ever granted its free
887 + * product) and keep a per-id quantity map for products whose free counts
888 + * differ (e.g. recursive BuyXGetX).
889 + */
890 + $reward_product_ids = array();
891 + $reward_quantity_map = array();
892 + $has_free_items = false;
893 + $bogo_type = 'products';
894 + $free_item_selection = 'cart_order';
895 +
603 896 foreach ( $discounts as $item_id => $discount ) {
604 - $discounts['discount'] = $this->min_max_average( $discount['discounts'] );
605 - $discounts['free'] = $discount['free'];
606 - $discounts['get_ids'] = $discount['get_ids'] ? array_column( $discount['get_ids'], 'id' ) : array( $item_id ); //@phpcs:ignore
607 - $discounts['get_qty'] = $discount['get_qty'];
608 - $discounts['bogo_type'] = $discount['bogo_type'] ?? 'products';
897 + $has_free_items = $discount['free'];
898 + $bogo_type = $discount['bogo_type'] ?? 'products';
899 + $free_item_selection = $discount['free_item_selection'] ?? 'cart_order';
900 +
901 + $rule_reward_ids = ! empty( $discount['get_ids'] ) ? array_column( $discount['get_ids'], 'id' ) : array( $item_id ); // phpcs:ignore
902 +
903 + foreach ( $rule_reward_ids as $reward_product_id ) {
904 + $reward_product_id = (int) $reward_product_id; // phpcs:ignore
905 + $reward_product_ids[] = $reward_product_id; // phpcs:ignore
906 + $reward_quantity_map[ $reward_product_id ] = (int) $discount['get_qty']; // phpcs:ignore
907 + }
609 908 }
610 909
910 + $reward_product_ids = array_values( array_unique( $reward_product_ids ) );
911 +
912 + $discounts['discount'] = 0.0;
913 + $discounts['free'] = $has_free_items;
914 + $discounts['get_ids'] = $reward_product_ids;
915 + $discounts['get_qty'] = empty( $reward_quantity_map ) ? 0 : max( $reward_quantity_map ); // phpcs:ignore
916 + $discounts['get_qty_map'] = $reward_quantity_map;
917 + $discounts['bogo_type'] = $bogo_type;
918 + $discounts['free_item_selection'] = $free_item_selection;
919 +
920 + /**
921 + * BuyXGetY (products): replace the flat aggregation with an authoritative
922 + * reward map keyed by the tier's own get product, so each cart product
923 + * that qualifies grants its tier's reward.
924 + *
925 + * Category BOGO is not handled here — {@see \Disco\App\Intents\CategoryBogo\CategoryBogo}
926 + * owns its reward selection, buy reservation and cart reconciliation.
927 + */
928 + foreach ( $intents as $intent ) {
929 + $bogo_type = $intent->campaign->get_bogo_type();
930 +
931 + if ( 'BuyXGetY' !== $intent->campaign->get_discount_intent() || 'products' !== $bogo_type ) {
932 + continue;
933 + }
934 +
935 + // Only free-type rules grant free items; a percent/fixed BOGO must not
936 + // fabricate free products here.
937 + $rules = $intent->campaign->get_discount_rules();
938 + $first_rule = ( is_array( $rules ) && isset( $rules[0] ) ) ? ( is_object( $rules[0] ) ? (array) $rules[0] : $rules[0] ) : array(); // phpcs:ignore
939 +
940 + if ( ! isset( $first_rule['discount_type'] ) || 'free' !== $first_rule['discount_type'] ) {
941 + continue;
942 + }
943 +
944 + $reward_map = $this->compute_bogo_products_free_map( $intent->campaign, $cart );
945 +
946 + // Always authoritative: an empty map means no qualifying (non-reward)
947 + // purchase, so no free items — do not fall back to the flat count.
948 + $discounts['get_ids'] = array_keys( $reward_map ); // phpcs:ignore
949 + $discounts['get_qty_map'] = $reward_map; // phpcs:ignore
950 + // Each get-product is freed its own quantity.
951 + $discounts['get_qty'] = empty( $reward_map ) ? 0 : max( $reward_map ); // phpcs:ignore
952 + $discounts['free'] = ! empty( $reward_map ); // phpcs:ignore
953 + $discounts['bogo_type'] = $bogo_type;
954 + $discounts['free_item_selection'] = $intent->campaign->get_free_item_selection();
955 +
956 + /**
957 + * This branch is authoritative for the whole result, so the campaign
958 + * that owns it is the only one that can be credited.
959 + */
960 + $candidate_campaign_ids = array( (int) $intent->campaign->id );
961 + }
962 +
963 + /**
964 + * Stage the campaigns only once the result is final, and only when it
965 + * actually grants free items.
966 + */
967 + if ( ! empty( $discounts['free'] ) ) {
968 + foreach ( array_unique( $candidate_campaign_ids ) as $applied_campaign_id ) {
969 + ( new UserLimit )->disco_start_session_on_checkout( $applied_campaign_id );
970 + }
971 + }
972 +
611 973 return $discounts;
612 974 }
613 975
614 976 /**
977 + * Authoritative free Y map for a BuyXGetY (products) campaign.
978 + *
979 + * Returns get-product id => free quantity, attributing each tier's reward to
980 + * that tier's own get-products:
981 + * - `separate` → each cart line credits every tier whose range
982 + * its own quantity matches ([min,max]); rewards
983 + * sum, and each tier credits its own get-products.
984 + * - `combined` → one pool over every applicable line; the highest
985 + * tier it reaches credits its get-products once.
986 + * - `variations` → one pool per parent product (all variations of
987 + * the same variable count together, and a simple
988 + * product is its own pool); every pool that
989 + * reaches a tier credits that tier's get-products,
990 + * so two qualifying parents grant two rewards.
991 + * Recursive tiers multiply by floor(qty/min) (line qty for separate, pool qty
992 + * for combined / variations).
993 + *
994 + * @param \Disco\App\Utility\Config $campaign Campaign Config.
995 + * @param \WC_Cart $cart Cart Object.
996 + * @return array<int, int>
997 + */
998 + private function compute_bogo_products_free_map( Config $campaign, \WC_Cart $cart ): array {//phpcs:ignore
999 + $rules = $campaign->get_discount_rules();
1000 +
1001 + if ( ! is_array( $rules ) || empty( $rules ) ) {
1002 + return array();
1003 + }
1004 +
1005 + $reward_map = array();
1006 +
1007 + if ( in_array( $campaign->get_count_quantity_as(), array( 'combined', 'variations' ), true ) ) {
1008 + foreach ( $this->get_bogo_buy_pool_quantities( $cart, $campaign ) as $pool_quantity ) {
1009 + $this->credit_bogo_pool_reward( $reward_map, $rules, $pool_quantity );
1010 + }
1011 +
1012 + return $reward_map;
1013 + }
1014 +
1015 + /**
1016 + * Separate: build the buy quantity per product, then each product earns
1017 + * the highest tier its quantity qualifies for (min <= qty). The upper
1018 + * `max` marks where the next tier begins, not a cut-off, so a quantity
1019 + * above the top tier still earns it and a gap earns the tier below.
1020 + * Free lines never count.
1021 + */
1022 + $buy_quantity_per_product = array();
1023 +
1024 + foreach ( $cart->get_cart() as $item ) {
1025 + if ( ! empty( $item['is_free_product'] ) ) {
1026 + continue;
1027 + }
1028 +
1029 + $effective_product_id = $item['product_id'];
1030 +
1031 + if ( ! empty( $item['variation_id'] ) ) {
1032 + $effective_product_id = $item['variation_id'];
1033 + }
1034 +
1035 + if ( ! $campaign->product_is_applicable( $effective_product_id ) ) {
1036 + continue;
1037 + }
1038 +
1039 + $product = wc_get_product( $effective_product_id );
1040 +
1041 + if ( ! Helper::is_filter_passed( $campaign, array( 'product' => $product ) ) ) {
1042 + continue;
1043 + }
1044 +
1045 + $buy_quantity_per_product[ (int) $effective_product_id ] = ( $buy_quantity_per_product[ (int) $effective_product_id ] ?? 0 ) + (int) $item['quantity'];
1046 + }
1047 +
1048 + foreach ( $buy_quantity_per_product as $quantity ) {
1049 + $qualifying_rule = null;
1050 + $qualifying_minimum = -1;
1051 +
1052 + foreach ( $rules as $rule ) {
1053 + $rule = is_object( $rule ) ? (array) $rule : $rule; // phpcs:ignore
1054 + $minimum_quantity = isset( $rule['min'] ) ? absint( $rule['min'] ) : 0; // phpcs:ignore
1055 + $reward_quantity = ! empty( $rule['get_quantity'] ) ? (int) $rule['get_quantity'] : 0; // phpcs:ignore
1056 +
1057 + if ( $minimum_quantity <= 0 || $reward_quantity <= 0 || empty( $rule['get_ids'] ) ) {
1058 + continue;
1059 + }
1060 +
1061 + if ( $quantity >= $minimum_quantity && $minimum_quantity > $qualifying_minimum ) { // phpcs:ignore
1062 + $qualifying_rule = $rule;
1063 + $qualifying_minimum = $minimum_quantity;
1064 + }
1065 + }
1066 +
1067 + if ( null === $qualifying_rule ) {
1068 + continue;
1069 + }
1070 +
1071 + $minimum_quantity = absint( $qualifying_rule['min'] );
1072 + $reward_quantity = (int) $qualifying_rule['get_quantity'];
1073 + $is_recursive = ! empty( $qualifying_rule['recursive'] ) && 'yes' === $qualifying_rule['recursive']; // phpcs:ignore
1074 + $reward_total = ( $is_recursive && $minimum_quantity > 0 ) ? ( (int) floor( $quantity / $minimum_quantity ) * $reward_quantity ) : $reward_quantity; // phpcs:ignore
1075 +
1076 + if ( $reward_total > 0 ) { // phpcs:ignore
1077 + foreach ( array_column( $qualifying_rule['get_ids'], 'id' ) as $reward_product_id ) {
1078 + $reward_map[ (int) $reward_product_id ] = ( $reward_map[ (int) $reward_product_id ] ?? 0 ) + $reward_total;
1079 + }
1080 + }
1081 + }
1082 +
1083 + return $reward_map;
1084 + }
1085 +
1086 + /**
1087 + * Pooled buy quantities for combined / variations, excluding free lines.
1088 + *
1089 + * `combined` returns a single pool over every applicable line. `variations`
1090 + * returns one pool per parent product, so variations of the same variable
1091 + * product count together while different parents stay apart — the same
1092 + * grouping {@see QuantityCounter} applies to the buy-X gate.
1093 + *
1094 + * @param \WC_Cart $cart Cart Object.
1095 + * @param \Disco\App\Utility\Config $campaign Campaign Config.
1096 + * @return array<string, int> Pool key => pooled quantity.
1097 + */
1098 + private function get_bogo_buy_pool_quantities( \WC_Cart $cart, Config $campaign ): array {//phpcs:ignore
1099 + $pool_quantities = array();
1100 + $pool_per_parent = 'variations' === $campaign->get_count_quantity_as();
1101 + $cart_items = $cart->get_cart();
1102 +
1103 + if ( ! is_array( $cart_items ) ) {
1104 + return $pool_quantities;
1105 + }
1106 +
1107 + foreach ( $cart_items as $item ) {
1108 + if ( ! empty( $item['is_free_product'] ) ) {
1109 + continue;
1110 + }
1111 +
1112 + $effective_product_id = $item['product_id'];
1113 +
1114 + if ( ! empty( $item['variation_id'] ) ) {
1115 + $effective_product_id = $item['variation_id'];
1116 + }
1117 +
1118 + if ( ! $campaign->product_is_applicable( $effective_product_id ) ) {
1119 + continue;
1120 + }
1121 +
1122 + $product = wc_get_product( $effective_product_id );
1123 +
1124 + if ( ! Helper::is_filter_passed( $campaign, array( 'product' => $product ) ) ) {
1125 + continue;
1126 + }
1127 +
1128 + $pool_key = $pool_per_parent ? 'parent_' . (int) $item['product_id'] : 'all'; // phpcs:ignore
1129 +
1130 + $pool_quantities[ $pool_key ] = ( $pool_quantities[ $pool_key ] ?? 0 ) + (int) $item['quantity'];
1131 + }
1132 +
1133 + return $pool_quantities;
1134 + }
1135 +
1136 + /**
1137 + * Credit one pool's reward to the get-products of the tier it qualifies for.
1138 + *
1139 + * The winning tier is the one with the highest `min` the pool reaches; a
1140 + * recursive tier multiplies its reward by the number of complete sets.
1141 + *
1142 + * @param array $reward_map Reward map (get-product id => quantity), by reference.
1143 + * @param array $rules Discount rules.
1144 + * @param int $pool_quantity Pooled buy quantity.
1145 + */
1146 + private function credit_bogo_pool_reward( array &$reward_map, array $rules, int $pool_quantity ): void {//phpcs:ignore
1147 + $qualifying_rule = null;
1148 + $qualifying_minimum = -1;
1149 +
1150 + foreach ( $rules as $rule ) {
1151 + $rule = is_object( $rule ) ? (array) $rule : $rule; // phpcs:ignore
1152 + $minimum_quantity = isset( $rule['min'] ) ? absint( $rule['min'] ) : 0; // phpcs:ignore
1153 +
1154 + if ( $minimum_quantity > 0 && $pool_quantity >= $minimum_quantity && $minimum_quantity > $qualifying_minimum ) { // phpcs:ignore
1155 + $qualifying_rule = $rule;
1156 + $qualifying_minimum = $minimum_quantity;
1157 + }
1158 + }
1159 +
1160 + if ( null === $qualifying_rule || empty( $qualifying_rule['get_ids'] ) ) {
1161 + return;
1162 + }
1163 +
1164 + $minimum_quantity = absint( $qualifying_rule['min'] );
1165 + $reward_quantity = ! empty( $qualifying_rule['get_quantity'] ) ? (int) $qualifying_rule['get_quantity'] : 0; // phpcs:ignore
1166 + $is_recursive = ! empty( $qualifying_rule['recursive'] ) && 'yes' === $qualifying_rule['recursive']; // phpcs:ignore
1167 + $quantity = ( $is_recursive && $minimum_quantity > 0 ) ? (int) floor( $pool_quantity / $minimum_quantity ) * $reward_quantity : $reward_quantity; // phpcs:ignore
1168 +
1169 + if ( $quantity <= 0 ) {
1170 + return;
1171 + }
1172 +
1173 + foreach ( array_column( $qualifying_rule['get_ids'], 'id' ) as $reward_product_id ) {
1174 + $reward_map[ (int) $reward_product_id ] = ( $reward_map[ (int) $reward_product_id ] ?? 0 ) + $quantity;
1175 + }
1176 + }
1177 +
1178 + /**
615 1179 * Is it a bogo campaign?
616 1180 *
617 1181 * @param \Disco\App\Utility\Config $campaign Campaign Config.
618 1182 */
619 - public function is_bogo( Config $campaign ): bool {
1183 + public function is_bogo( Config $campaign ): bool { // phpcs:ignore
620 1184 return in_array( $campaign->get_discount_intent(), array( 'BuyXGetX', 'BuyXGetY' ), true );
621 1185 }
622 1186
623 1187 /**
@@ -646,8 +1210,111 @@
646 1210 return min( $discounts );
647 1211 }
648 1212
649 1213 /**
1214 + * Strip the embedded tax portion from a discount amount.
1215 + *
1216 + * When WooCommerce is set to enter prices inclusive of tax, the discount
1217 + * amount computed by the intents also carries that tax (e.g. a 50 discount
1218 + * becomes 55 at 10% tax). The cart fee is added as non-taxable, so the tax
1219 + * must be removed here to keep the net discount correct.
1220 + *
1221 + * When a cart is supplied, the embedded-tax portion is derived from the
1222 + * cart's own subtotal and subtotal tax rather than assuming the whole
1223 + * amount carries the standard rate. This keeps mixed carts correct where
1224 + * some products are taxable and others are not (or use different tax
1225 + * classes): non-taxable products add to the subtotal but contribute zero
1226 + * tax, so the effective inclusive-tax ratio drops accordingly.
1227 + *
1228 + * @since 1.3.54
1229 + * @param float $amount Tax-inclusive discount amount.
1230 + * @param \WC_Cart|null $cart Optional cart used to derive the effective tax ratio.
1231 + * @return float Tax-exclusive discount amount.
1232 + */
1233 + public function get_discount_exclude_tax( float $amount, $cart = null ): float {
1234 + if ( ! function_exists( 'wc_prices_include_tax' ) || ! wc_prices_include_tax() ) {
1235 + return $amount;
1236 + }
1237 +
1238 + if ( ! class_exists( 'WC_Tax' ) ) {
1239 + return $amount;
1240 + }
1241 +
1242 + // Prefer a product-derived inclusive-tax ratio so mixed carts strip
1243 + // only the tax actually embedded. The discount base is built from each
1244 + // product's tax-inclusive price (see CalcFactory::get_price), so we
1245 + // rebuild the same base excluding tax per product. wc_get_price_excluding_tax
1246 + // respects each product's own tax status and class: a non-taxable
1247 + // product returns its price unchanged and contributes zero embedded tax.
1248 + if ( $cart instanceof \WC_Cart && function_exists( 'wc_get_price_excluding_tax' ) ) {
1249 + return $this->strip_tax_using_cart_ratio( $amount, $cart );
1250 + }
1251 +
1252 + // Fallback: rates for the standard tax class at the customer location.
1253 + $rates = \WC_Tax::get_rates( '' );
1254 +
1255 + if ( empty( $rates ) ) {
1256 + return $amount;
1257 + }
1258 +
1259 + // Tax embedded inside the inclusive amount, then remove it.
1260 + $tax_total = array_sum( \WC_Tax::calc_inclusive_tax( $amount, $rates ) );
1261 +
1262 + return $amount - $tax_total;
1263 + }
1264 +
1265 + /**
1266 + * Strip embedded tax from a discount using the cart's own inclusive-tax ratio.
1267 + *
1268 + * Rebuilds the discount base (sum of tax-inclusive prices) and its
1269 + * tax-exclusive counterpart per product, then scales the discount by the
1270 + * excl/incl ratio. Non-taxable products contribute equally to both sums,
1271 + * so their share keeps no tax stripped.
1272 + *
1273 + * @param float $amount Tax-inclusive discount amount.
1274 + * @param \WC_Cart $cart Cart used to derive the ratio.
1275 + * @return float Tax-exclusive discount amount.
1276 + */
1277 + private function strip_tax_using_cart_ratio( float $amount, \WC_Cart $cart ): float {
1278 + $incl_sum = 0.0;
1279 + $excl_sum = 0.0;
1280 + $cart_items = $cart->get_cart();
1281 +
1282 + if ( ! is_array( $cart_items ) ) {
1283 + $cart_items = array();
1284 + }
1285 +
1286 + foreach ( $cart_items as $cart_item ) {
1287 + if ( empty( $cart_item['data'] ) || ! $cart_item['data'] instanceof \WC_Product ) {
1288 + continue;
1289 + }
1290 +
1291 + $product = $cart_item['data'];
1292 + $qty = (float) ( $cart_item['quantity'] ?? 1 );
1293 + $price_incl = (float) $product->get_price();
1294 + $price_excl = (float) wc_get_price_excluding_tax( $product, array( 'price' => $price_incl ) );
1295 +
1296 + $incl_sum += $price_incl * $qty;
1297 + $excl_sum += $price_excl * $qty;
1298 + }
1299 +
1300 + // No priced items in the cart -> nothing to strip.
1301 + if ( $incl_sum <= 0 ) {
1302 + return $amount;
1303 + }
1304 +
1305 + $net = $amount * $excl_sum / $incl_sum;
1306 +
1307 + $decimals = 2;
1308 +
1309 + if ( function_exists( 'wc_get_price_decimals' ) ) {
1310 + $decimals = wc_get_price_decimals();
1311 + }
1312 +
1313 + return round( $net, $decimals );
1314 + }
1315 +
1316 + /**
650 1317 * Total qualifying quantity for recursive BOGO.
651 1318 *
652 1319 * Sums the quantity of every cart item that passes the campaign's
653 1320 * few-products / "all" filter (product_is_applicable) and its conditions
@@ -694,8 +1361,97 @@
694 1361 return $total;
695 1362 }
696 1363
697 1364 /**
1365 + * Whether a campaign is a free products BOGO evaluated per product.
1366 + *
1367 + * @param \Disco\App\Utility\Config $campaign Campaign Config.
1368 + * @param array $rules Discount rules.
1369 + */
1370 + private function is_per_product_free_bogo( Config $campaign, array $rules ): bool {
1371 + if ( 'products' !== $campaign->get_bogo_type() ) {
1372 + return false;
1373 + }
1374 +
1375 + if ( in_array( $campaign->get_count_quantity_as(), array( 'combined', 'variations' ), true ) ) {
1376 + return false;
1377 + }
1378 +
1379 + $first_rule = isset( $rules[0] ) ? ( is_object( $rules[0] ) ? (array) $rules[0] : $rules[0] ) : array(); // phpcs:ignore
1380 +
1381 + return isset( $first_rule['discount_type'] ) && 'free' === $first_rule['discount_type'];
1382 + }
1383 +
1384 + /**
1385 + * Total free Y quantity for a products BuyXGetY campaign in `separate` mode.
1386 + *
1387 + * X is every applicable product. Each cart line grants the reward of every
1388 + * rule (tier) whose range its own quantity falls in — `qty` within
1389 + * `[min, max]` (no max = min-only) — summed across matching tiers, and ×
1390 + * floor(qty/min) when the tier is recursive. The Y product counts as an X
1391 + * line too. Summing across all qualifying lines gives the free Y count, so
1392 + * two products each matching a different tier grant each tier's reward.
1393 + *
1394 + * @param \Disco\App\Utility\Config $campaign Campaign Config.
1395 + * @param \WC_Cart $cart Cart Object.
1396 + */
1397 + private function get_products_bogo_free_quantity( Config $campaign, \WC_Cart $cart ): int {//phpcs:ignore
1398 + $rules = $campaign->get_discount_rules();
1399 + $cart_items = $cart->get_cart();
1400 +
1401 + if ( ! is_array( $rules ) || ! is_array( $cart_items ) ) {
1402 + return 0;
1403 + }
1404 +
1405 + $free_quantity_total = 0;
1406 +
1407 + foreach ( $cart_items as $item ) {
1408 + if ( ! empty( $item['is_free_product'] ) ) {
1409 + continue;
1410 + }
1411 +
1412 + $effective_product_id = $item['product_id'];
1413 +
1414 + if ( ! empty( $item['variation_id'] ) ) {
1415 + $effective_product_id = $item['variation_id'];
1416 + }
1417 +
1418 + if ( ! $campaign->product_is_applicable( $effective_product_id ) ) {
1419 + continue;
1420 + }
1421 +
1422 + $product = wc_get_product( $effective_product_id );
1423 +
1424 + if ( ! Helper::is_filter_passed( $campaign, array( 'product' => $product ) ) ) {
1425 + continue;
1426 + }
1427 +
1428 + $line_quantity = (int) $item['quantity'];
1429 +
1430 + foreach ( $rules as $rule ) {
1431 + $rule = is_object( $rule ) ? (array) $rule : $rule; // phpcs:ignore
1432 + $minimum_quantity = isset( $rule['min'] ) ? absint( $rule['min'] ) : 0; // phpcs:ignore
1433 + $maximum_quantity = ! empty( $rule['max'] ) ? absint( $rule['max'] ) : 0; // phpcs:ignore
1434 + $get_quantity = ! empty( $rule['get_quantity'] ) ? (int) $rule['get_quantity'] : 0; // phpcs:ignore
1435 + $recursive = ! empty( $rule['recursive'] ) && 'yes' === $rule['recursive']; // phpcs:ignore
1436 +
1437 + if ( $minimum_quantity <= 0 || $get_quantity <= 0 || $line_quantity < $minimum_quantity ) {
1438 + continue;
1439 + }
1440 +
1441 + // Respect the tier's upper bound so each product matches its tier.
1442 + if ( $maximum_quantity > 0 && $line_quantity > $maximum_quantity && 'yes' !== $rule['recursive'] ) {
1443 + continue;
1444 + }
1445 +
1446 + $free_quantity_total += $recursive ? ( (int) floor( $line_quantity / $minimum_quantity ) * $get_quantity ) : $get_quantity; // phpcs:ignore
1447 + }
1448 + }
1449 +
1450 + return $free_quantity_total;
1451 + }
1452 +
1453 + /**
698 1454 * Get Offer Label.
699 1455 *
700 1456 * @param array $rule Discount Rule.
701 1457 */
@@ -845,9 +1601,56 @@
845 1601 *
846 1602 * @param \Disco\App\Utility\Config $campaign Campaign Config.
847 1603 * @param array $rule Discount Rules.
848 1604 */
1605 + /**
1606 + * Pick the single BuyXGetY tier that applies for the current cart.
1607 + *
1608 + * Tiers are ranked by `min`: the winner is the qualifying rule with the
1609 + * highest `min` that the buy quantity still meets (the broken upper `max` is
1610 + * ignored — a rule qualifies on `qty >= min`, mirroring the gate). On a tie,
1611 + * the later rule wins. Returns a list with 0 or 1 rule.
1612 + *
1613 + * @param \Disco\App\Utility\Config $campaign Campaign Config.
1614 + * @param array $rules All discount rules.
1615 + */
1616 + private function select_bogo_tier_rule( Config $campaign, array $rules ): array {
1617 + $qualifying_rule = null;
1618 + $qualifying_minimum = -1;
1619 +
1620 + foreach ( $rules as $rule ) {
1621 + $rule_array = is_object( $rule ) ? (array) $rule : $rule; // phpcs:ignore
1622 +
1623 + // Rule only counts if the cart meets its buy-X threshold.
1624 + if ( ! $this->verify_xproduct_cart_rule( $campaign, $rule_array ) ) {
1625 + continue;
1626 + }
1627 +
1628 + $minimum_quantity = isset( $rule_array['min'] ) ? absint( $rule_array['min'] ) : 0; // phpcs:ignore
1629 +
1630 + if ( $minimum_quantity >= $qualifying_minimum ) { // phpcs:ignore
1631 + $qualifying_minimum = $minimum_quantity;
1632 + $qualifying_rule = $rule;
1633 + }
1634 + }
1635 +
1636 + return null === $qualifying_rule ? array() : array( $qualifying_rule ); // phpcs:ignore
1637 + }
1638 +
849 1639 private function verify_xproduct_cart_rule( Config $campaign, array $rule ): bool { //phpcs:ignore
1640 + /**
1641 + * "Count Quantity As" combined / variations: pool the buy-X quantity
1642 + * across cart lines instead of requiring a single line to reach `min`,
1643 + * so a mixed cart (e.g. 1 + 1 of different products) can satisfy a
1644 + * "buy 2" threshold. QuantityCounter honours the same min / max /
1645 + * recursive semantics used elsewhere.
1646 + */
1647 + if ( in_array( $campaign->get_count_quantity_as(), array( 'combined', 'variations' ), true ) ) { // phpcs:ignore
1648 + $quantity_counter = new QuantityCounter;
1649 +
1650 + return ! empty( $quantity_counter->get_eligible_units( WC()->cart, $campaign, $rule ) );
1651 + }
1652 +
850 1653 $cart = WC()->cart->get_cart();
851 1654
852 1655 foreach ( $cart as $item ) {
853 1656 // Skip free products - they must not count towards the BOGO buy quantity,