class-wc-brands-coupons.php — WooCommerce 10.9.2

woocommerce / includes / class-wc-brands-coupons.php

woocommerce / includes Last commit date

class-wc-brands-coupons.php

192 lines

1	<?php
2
3	declare( strict_types = 1);
4
5	use Automattic\WooCommerce\Enums\ProductType;
6
7	/**
8	* WC_Brands_Coupons class.
9	*
10	* Important: For internal use only by the Automattic\WooCommerce\Internal\Brands package.
11	*
12	* @version 9.4.0
13	*/
14	class WC_Brands_Coupons {
15
16	const E_WC_COUPON_EXCLUDED_BRANDS = 301;
17
18	/**
19	* Constructor
20	*/
21	public function __construct() {
22	// Coupon validation and error handling.
23	add_filter( 'woocommerce_coupon_is_valid', array( $this, 'is_coupon_valid' ), 10, 3 );
24	add_filter( 'woocommerce_coupon_is_valid_for_product', array( $this, 'is_valid_for_product' ), 10, 3 );
25	add_filter( 'woocommerce_coupon_error', array( $this, 'brand_exclusion_error' ), 10, 2 );
26	}
27
28	/**
29	* Validate the coupon based on included and/or excluded product brands.
30	*
31	* If one of the following conditions are met, an exception will be thrown and
32	* displayed as an error notice on the cart page:
33	*
34	* 1) Coupon has a brand requirement but no products in the cart have the brand.
35	* 2) All products in the cart match the brand exclusion rule.
36	* 3) For a cart discount, there is at least one product in cart that matches exclusion rule.
37	*
38	* @throws Exception Throws Exception for invalid coupons.
39	* @param bool $valid Whether the coupon is valid.
40	* @param WC_Coupon $coupon Coupon object.
41	* @param WC_Discounts $discounts Discounts object.
42	* @return bool $valid True if coupon is valid, otherwise Exception will be thrown.
43	*/
44	public function is_coupon_valid( $valid, $coupon, $discounts = null ) {
45	$this->set_brand_settings_on_coupon( $coupon );
46
47	// Only check if coupon has brand restrictions on it.
48	$brand_coupon_settings = WC_Brands_Brand_Settings_Manager::get_brand_settings_on_coupon( $coupon );
49
50	$brand_restrictions = ! empty( $brand_coupon_settings['included_brands'] ) \|\| ! empty( $brand_coupon_settings['excluded_brands'] );
51	if ( ! $brand_restrictions ) {
52	return $valid;
53	}
54
55	$included_brands_match = false;
56	$excluded_brands_matches = 0;
57
58	$items = $discounts->get_items();
59
60	foreach ( $items as $item ) {
61	$product_brands = $this->get_product_brands( $this->get_product_id( $item->product ) );
62
63	if ( ! empty( array_intersect( $product_brands, $brand_coupon_settings['included_brands'] ) ) ) {
64	$included_brands_match = true;
65	}
66
67	if ( ! empty( array_intersect( $product_brands, $brand_coupon_settings['excluded_brands'] ) ) ) {
68	++$excluded_brands_matches;
69	}
70	}
71
72	// 1) Coupon has a brand requirement but no products in the cart have the brand.
73	if ( ! $included_brands_match && ! empty( $brand_coupon_settings['included_brands'] ) ) {
74	throw new Exception( $coupon->get_coupon_error( WC_Coupon::E_WC_COUPON_NOT_APPLICABLE ), WC_Coupon::E_WC_COUPON_NOT_APPLICABLE ); // phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped
75	}
76
77	// 2) All products in the cart match brand exclusion rule.
78	if ( count( $items ) === $excluded_brands_matches ) {
79	throw new Exception( __( 'Sorry, this coupon is not applicable to the brands of selected products.', 'woocommerce' ), self::E_WC_COUPON_EXCLUDED_BRANDS ); // phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped
80	}
81
82	// 3) For a cart discount, there is at least one product in cart that matches exclusion rule.
83	if ( $coupon->is_type( 'fixed_cart' ) && $excluded_brands_matches > 0 ) {
84	throw new Exception( __( 'Sorry, this coupon is not applicable to the brands of selected products.', 'woocommerce' ), self::E_WC_COUPON_EXCLUDED_BRANDS ); // phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped
85	}
86
87	return $valid;
88	}
89
90	/**
91	* Check if a coupon is valid for a product.
92	*
93	* This allows percentage and product discounts to apply to only
94	* the correct products in the cart.
95	*
96	* @param bool $valid Whether the product should get the coupon's discounts.
97	* @param WC_Product $product WC Product Object.
98	* @param WC_Coupon $coupon Coupon object.
99	* @return bool $valid
100	*/
101	public function is_valid_for_product( $valid, $product, $coupon ) {
102
103	if ( ! is_a( $product, 'WC_Product' ) ) {
104	return $valid;
105	}
106	$this->set_brand_settings_on_coupon( $coupon );
107
108	$product_id = $this->get_product_id( $product );
109	$product_brands = $this->get_product_brands( $product_id );
110
111	// Check if coupon has a brand requirement and if this product has that brand attached.
112	$brand_coupon_settings = WC_Brands_Brand_Settings_Manager::get_brand_settings_on_coupon( $coupon );
113	if ( ! empty( $brand_coupon_settings['included_brands'] ) && empty( array_intersect( $product_brands, $brand_coupon_settings['included_brands'] ) ) ) {
114	return false;
115	}
116
117	// Check if coupon has a brand exclusion and if this product has that brand attached.
118	if ( ! empty( $brand_coupon_settings['excluded_brands'] ) && ! empty( array_intersect( $product_brands, $brand_coupon_settings['excluded_brands'] ) ) ) {
119	return false;
120	}
121
122	return $valid;
123	}
124
125	/**
126	* Display a custom error message when a cart discount coupon does not validate
127	* because an excluded brand was found in the cart.
128	*
129	* @param string $err The error message.
130	* @param string $err_code The error code.
131	* @return string
132	*/
133	public function brand_exclusion_error( $err, $err_code ) {
134	if ( self::E_WC_COUPON_EXCLUDED_BRANDS !== $err_code ) {
135	return $err;
136	}
137
138	return __( 'Sorry, this coupon is not applicable to the brands of selected products.', 'woocommerce' );
139	}
140
141	/**
142	* Get a list of brands that are assigned to a specific product
143	*
144	* @param int $product_id Product id.
145	* @return array brands
146	*/
147	private function get_product_brands( $product_id ) {
148	return wp_get_post_terms( $product_id, 'product_brand', array( 'fields' => 'ids' ) );
149	}
150
151	/**
152	* Set brand settings as properties on coupon object. These properties are
153	* lists of included product brand IDs and list of excluded brand IDs.
154	*
155	* @param WC_Coupon $coupon Coupon object.
156	*
157	* @return void
158	*/
159	private function set_brand_settings_on_coupon( $coupon ) {
160	$brand_coupon_settings = WC_Brands_Brand_Settings_Manager::get_brand_settings_on_coupon( $coupon );
161
162	if ( ! empty( $brand_coupon_settings['included_brands'] ) && ! empty( $brand_coupon_settings['excluded_brands'] ) ) {
163	return;
164	}
165
166	$included_brands = get_post_meta( $coupon->get_id(), 'product_brands', true );
167	if ( empty( $included_brands ) ) {
168	$included_brands = array();
169	}
170
171	$excluded_brands = get_post_meta( $coupon->get_id(), 'exclude_product_brands', true );
172	if ( empty( $excluded_brands ) ) {
173	$excluded_brands = array();
174	}
175
176	// Store these for later to avoid multiple look-ups.
177	WC_Brands_Brand_Settings_Manager::set_brand_settings_on_coupon( $coupon );
178	}
179
180	/**
181	* Returns the product (or variant) ID.
182	*
183	* @param WC_Product $product WC Product Object.
184	* @return int Product ID
185	*/
186	private function get_product_id( $product ) {
187	return $product->is_type( ProductType::VARIATION ) ? $product->get_parent_id() : $product->get_id();
188	}
189	}
190
191	new WC_Brands_Coupons();
192