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<?php /** * WooCommerce coupons * * The WooCommerce coupons class gets coupon data from storage and checks coupon validity * * @class WC_Coupon * @package WooCommerce/Classes * @category Class * @author WooThemes / class WC_Coupon { // Coupon message codes const E_WC_COUPON_INVALID_FILTERED = 100; const E_WC_COUPON_INVALID_REMOVED = 101; const E_WC_COUPON_NOT_YOURS_REMOVED = 102; const E_WC_COUPON_ALREADY_APPLIED = 103; const E_WC_COUPON_ALREADY_APPLIED_INDIV_USE_ONLY = 104; const E_WC_COUPON_NOT_EXIST = 105; const E_WC_COUPON_USAGE_LIMIT_REACHED = 106; const E_WC_COUPON_EXPIRED = 107; const E_WC_COUPON_MIN_SPEND_LIMIT_NOT_MET = 108; const E_WC_COUPON_NOT_APPLICABLE = 109; const E_WC_COUPON_NOT_VALID_SALE_ITEMS = 110; const E_WC_COUPON_PLEASE_ENTER = 111; const WC_COUPON_SUCCESS = 200; /* @public string Coupon code. / public $code; /* @public int Coupon ID. / public $id; /* @public string Type of discount. / public $type; /* @public string Type of discount (alias). / public $discount_type; /* @public string Coupon amount. / public $amount; /* @public string "Yes" if for individual use. / public $individual_use; /* @public array Array of product IDs. / public $product_ids; /* @public int Coupon usage limit. / public $usage_limit; /* @public int Coupon usage count. / public $usage_count; /* @public string Expiry date. / public $expiry_date; /* @public string "yes" if applied before tax. / public $apply_before_tax; /* @public string "yes" if coupon grants free shipping. / public $free_shipping; /* @public array Array of category ids. / public $product_categories; /* @public array Array of category ids. / public $exclude_product_categories; /* @public string "yes" if coupon does NOT apply to items on sale. / public $exclude_sale_items; /* @public string Minimum cart amount. / public $minimum_amount; /* @public string Coupon owner's email. / public $customer_email; /* @public array Post meta. / public $coupon_custom_fields; /* @public string How much the coupon is worth. / public $coupon_amount; /* @public string Error message. / public $error_message; /* * Coupon constructor. Loads coupon data. * * @access public * @param mixed $code code of the coupon to load * @return void / public function __construct( $code ) { global $wpdb; $this->code = apply_filters( 'woocommerce_coupon_code', $code ); // Coupon data lets developers create coupons through code $coupon_data = apply_filters( 'woocommerce_get_shop_coupon_data', false, $code ); if ( $coupon_data ) { $this->id = absint( $coupon_data['id'] ); $this->type = esc_html( $coupon_data['type'] ); $this->amount = esc_html( $coupon_data['amount'] ); $this->individual_use = esc_html( $coupon_data['individual_use'] ); $this->product_ids = is_array( $coupon_data['product_ids'] ) ? $coupon_data['product_ids'] : array(); $this->exclude_product_ids = is_array( $coupon_data['exclude_product_ids'] ) ? $coupon_data['exclude_product_ids'] : array(); $this->usage_limit = absint( $coupon_data['usage_limit'] ); $this->usage_count = absint( $coupon_data['usage_count'] ); $this->expiry_date = esc_html( $coupon_data['expiry_date'] ); $this->apply_before_tax = esc_html( $coupon_data['apply_before_tax'] ); $this->free_shipping = esc_html( $coupon_data['free_shipping'] ); $this->product_categories = is_array( $coupon_data['product_categories'] ) ? $coupon_data['product_categories'] : array(); $this->exclude_product_categories = is_array( $coupon_data['exclude_product_categories'] ) ? $coupon_data['exclude_product_categories'] : array(); $this->exclude_sale_items = esc_html( $coupon_data['exclude_sale_items'] ); $this->minimum_amount = esc_html( $coupon_data['minimum_amount'] ); $this->customer_email = esc_html( $coupon_data['customer_email'] ); } else { $coupon_id = $wpdb->get_var( $wpdb->prepare( apply_filters( 'woocommerce_coupon_code_query', "SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type = 'shop_coupon' AND post_status = 'publish'" ), $this->code ) ); if ( ! $coupon_id ) return; $coupon = get_post( $coupon_id ); $coupon->post_title = apply_filters( 'woocommerce_coupon_code', $coupon->post_title ); if ( empty( $coupon ) \|\| $this->code !== $coupon->post_title ) return; $this->id = $coupon->ID; $this->coupon_custom_fields = get_post_meta( $this->id ); $load_data = array( 'discount_type' => 'fixed_cart', 'coupon_amount' => 0, 'individual_use' => 'no', 'product_ids' => '', 'exclude_product_ids' => '', 'usage_limit' => '', 'usage_count' => '', 'expiry_date' => '', 'apply_before_tax' => 'yes', 'free_shipping' => 'no', 'product_categories' => array(), 'exclude_product_categories' => array(), 'exclude_sale_items' => 'no', 'minimum_amount' => '', 'customer_email' => array() ); foreach ( $load_data as $key => $default ) $this->$key = isset( $this->coupon_custom_fields[ $key ][0] ) && $this->coupon_custom_fields[ $key ][0] !== '' ? $this->coupon_custom_fields[ $key ][0] : $default; // Alias $this->type = $this->discount_type; $this->amount = $this->coupon_amount; // Formatting $this->product_ids = array_filter( array_map( 'trim', explode( ',', $this->product_ids ) ) ); $this->exclude_product_ids = array_filter( array_map( 'trim', explode( ',', $this->exclude_product_ids ) ) ); $this->expiry_date = $this->expiry_date ? strtotime( $this->expiry_date ) : ''; $this->product_categories = array_filter( array_map( 'trim', (array) maybe_unserialize( $this->product_categories ) ) ); $this->exclude_product_categories = array_filter( array_map( 'trim', (array) maybe_unserialize( $this->exclude_product_categories ) ) ); $this->customer_email = array_filter( array_map( 'trim', array_map( 'strtolower', (array) maybe_unserialize( $this->customer_email ) ) ) ); } do_action( 'woocommerce_coupon_loaded', $this ); } /* * Check if coupon needs applying before tax. * * @access public * @return bool / public function apply_before_tax() { return $this->apply_before_tax == 'yes' ? true : false; } /* * Check if a coupon enables free shipping. * * @access public * @return void / public function enable_free_shipping() { return $this->free_shipping == 'yes' ? true : false; } /* * Check if a coupon excludes sale items. * * @access public * @return void / public function exclude_sale_items() { return $this->exclude_sale_items == 'yes' ? true : false; } /* * Increase usage count fo current coupon. * * @access public * @return void / public function inc_usage_count() { $this->usage_count++; update_post_meta( $this->id, 'usage_count', $this->usage_count ); } /* * Decrease usage count fo current coupon. * * @access public * @return void / public function dcr_usage_count() { $this->usage_count--; update_post_meta( $this->id, 'usage_count', $this->usage_count ); } /* * Returns the error_message string * * @access public * @return string / public function get_error_message() { return $this->error_message; } /* * is_valid function. * * Check if a coupon is valid. Return a reason code if invalid. Reason codes: * * @access public * @return bool\|WP_Error validity or a WP_Error if not valid / public function is_valid() { global $woocommerce; $error_code = null; $valid = true; $error = false; if ( $this->id ) { // Usage Limit if ( $this->usage_limit > 0 ) { if ( $this->usage_count >= $this->usage_limit ) { $valid = false; $error_code = self::E_WC_COUPON_USAGE_LIMIT_REACHED; } } // Expired if ( $this->expiry_date ) { if ( current_time( 'timestamp' ) > $this->expiry_date ) { $valid = false; $error_code = self::E_WC_COUPON_EXPIRED; } } // Minimum spend if ( $this->minimum_amount > 0 ) { if ( $this->minimum_amount > $woocommerce->cart->subtotal ) { $valid = false; $error_code = self::E_WC_COUPON_MIN_SPEND_LIMIT_NOT_MET; } } // Product ids - If a product included is found in the cart then its valid if ( sizeof( $this->product_ids ) > 0 ) { $valid_for_cart = false; if ( sizeof( $woocommerce->cart->get_cart() ) > 0 ) { foreach( $woocommerce->cart->get_cart() as $cart_item_key => $cart_item ) { if ( in_array( $cart_item['product_id'], $this->product_ids ) \|\| in_array( $cart_item['variation_id'], $this->product_ids ) \|\| in_array( $cart_item['data']->get_parent(), $this->product_ids ) ) $valid_for_cart = true; } } if ( ! $valid_for_cart ) { $valid = false; $error_code = self::E_WC_COUPON_NOT_APPLICABLE; } } // Category ids - If a product included is found in the cart then its valid if ( sizeof( $this->product_categories ) > 0 ) { $valid_for_cart = false; if ( sizeof( $woocommerce->cart->get_cart() ) > 0 ) { foreach( $woocommerce->cart->get_cart() as $cart_item_key => $cart_item ) { $product_cats = wp_get_post_terms($cart_item['product_id'], 'product_cat', array("fields" => "ids")); if ( sizeof( array_intersect( $product_cats, $this->product_categories ) ) > 0 ) $valid_for_cart = true; } } if ( ! $valid_for_cart ) { $valid = false; $error_code = self::E_WC_COUPON_NOT_APPLICABLE; } } // Cart discounts cannot be added if non-eligble product is found in cart if ( $this->type != 'fixed_product' && $this->type != 'percent_product' ) { // Exclude Products if ( sizeof( $this->exclude_product_ids ) > 0 ) { $valid_for_cart = true; if ( sizeof( $woocommerce->cart->get_cart() ) > 0 ) { foreach( $woocommerce->cart->get_cart() as $cart_item_key => $cart_item ) { if ( in_array( $cart_item['product_id'], $this->exclude_product_ids ) \|\| in_array( $cart_item['variation_id'], $this->exclude_product_ids ) \|\| in_array( $cart_item['data']->get_parent(), $this->exclude_product_ids ) ) { $valid_for_cart = false; } } } if ( ! $valid_for_cart ) { $valid = false; $error_code = self::E_WC_COUPON_NOT_APPLICABLE; } } // Exclude Sale Items if ( $this->exclude_sale_items == 'yes' ) { $valid_for_cart = true; $product_ids_on_sale = woocommerce_get_product_ids_on_sale(); if ( sizeof( $woocommerce->cart->get_cart() ) > 0 ) { foreach( $woocommerce->cart->get_cart() as $cart_item_key => $cart_item ) { if ( in_array( $cart_item['product_id'], $product_ids_on_sale, true ) \|\| in_array( $cart_item['variation_id'], $product_ids_on_sale, true ) \|\| in_array( $cart_item['data']->get_parent(), $product_ids_on_sale, true ) ) { $valid_for_cart = false; } } } if ( ! $valid_for_cart ) { $valid = false; $error_code = self::E_WC_COUPON_NOT_VALID_SALE_ITEMS; } } // Exclude Categories if ( sizeof( $this->exclude_product_categories ) > 0 ) { $valid_for_cart = true; if ( sizeof( $woocommerce->cart->get_cart() ) > 0 ) { foreach( $woocommerce->cart->get_cart() as $cart_item_key => $cart_item ) { $product_cats = wp_get_post_terms( $cart_item['product_id'], 'product_cat', array( "fields" => "ids" ) ); if ( sizeof( array_intersect( $product_cats, $this->exclude_product_categories ) ) > 0 ) $valid_for_cart = false; } } if ( ! $valid_for_cart ) { $valid = false; $error_code = self::E_WC_COUPON_NOT_APPLICABLE; } } } $valid = apply_filters( 'woocommerce_coupon_is_valid', $valid, $this ); if ( $valid ) { return true; } else { if ( is_null( $error_code ) ) $error_code = self::E_WC_COUPON_INVALID_FILTERED; } } else { $error_code = self::E_WC_COUPON_NOT_EXIST; } if ( $error_code ) $this->error_message = $this->get_coupon_error( $error_code ); return false; } /* * Converts one of the WC_Coupon message/error codes to a message string and * displays the message/error. * * @access public * @param int $msg_code Message/error code. * @return void / public function add_coupon_message( $msg_code ) { global $woocommerce; if ( $msg_code < 200 ) $woocommerce->add_error( $this->get_coupon_error( $msg_code ) ); else $woocommerce->add_message( $this->get_coupon_message( $msg_code ) ); } /* * Map one of the WC_Coupon message codes to a message string * * @access public * @param mixed $msg_code * @return string\| Message/error string / public function get_coupon_message( $msg_code ) { switch ( $msg_code ) { case self::WC_COUPON_SUCCESS: $msg = __( 'Coupon code applied successfully.', 'woocommerce' ); break; default: $msg = ''; break; } return apply_filters( 'woocommerce_coupon_message', $msg, $msg_code, $this ); } /* * Map one of the WC_Coupon error codes to a message string * * @access public * @param int $err_code Message/error code. * @return string\| Message/error string / public function get_coupon_error( $err_code ) { switch ( $err_code ) { case self::E_WC_COUPON_INVALID_FILTERED: $err = __( 'Coupon is not valid.', 'woocommerce' ); break; case self::E_WC_COUPON_NOT_EXIST: $err = __( 'Coupon does not exist!', 'woocommerce' ); break; case self::E_WC_COUPON_INVALID_REMOVED: $err = sprintf( __( 'Sorry, it seems the coupon "%s" is invalid - it has now been removed from your order.', 'woocommerce' ), $this->code ); break; case self::E_WC_COUPON_NOT_YOURS_REMOVED: $err = sprintf( __( 'Sorry, it seems the coupon "%s" is not yours - it has now been removed from your order.', 'woocommerce' ), $this->code ); break; case self::E_WC_COUPON_ALREADY_APPLIED: $err = __( 'Coupon code already applied!', 'woocommerce' ); break; case self::E_WC_COUPON_ALREADY_APPLIED_INDIV_USE_ONLY: $err = sprintf( __( 'Sorry, coupon "%s" has already been applied and cannot be used in conjunction with other coupons.', 'woocommerce' ), $this->code ); break; case self::E_WC_COUPON_USAGE_LIMIT_REACHED: $err = __( 'Coupon usage limit has been reached.', 'woocommerce' ); break; case self::E_WC_COUPON_EXPIRED: $err = __( 'This coupon has expired.', 'woocommerce' ); break; case self::E_WC_COUPON_MIN_SPEND_LIMIT_NOT_MET: $err = sprintf( __( 'The minimum spend for this coupon is %s.', 'woocommerce' ), woocommerce_price( $this->minimum_amount ) ); break; case self::E_WC_COUPON_NOT_APPLICABLE: $err = __( 'Sorry, this coupon is not applicable to your cart contents.', 'woocommerce' ); break; case self::E_WC_COUPON_NOT_VALID_SALE_ITEMS: $err = __( 'Sorry, this coupon is not valid for sale items.', 'woocommerce' ); break; default: $err = ''; break; } return apply_filters( 'woocommerce_coupon_error', $err, $err_code, $this ); } /* * Map one of the WC_Coupon error codes to an error string * No coupon instance will be available where a coupon does not exist, * so this static method exists. * * @access public * @param int $err_code Error code * @return string\| Error string */ public static function get_generic_coupon_error( $err_code ) { switch ( $err_code ) { case self::E_WC_COUPON_NOT_EXIST: $err = __( 'Coupon does not exist!', 'woocommerce' ); break; case self::E_WC_COUPON_PLEASE_ENTER: $err = __( 'Please enter a coupon code.', 'woocommerce' ); break; default: $err = ''; break; } // When using this static method, there is no $this to pass to filter return apply_filters( 'woocommerce_coupon_error', $err, $err_code, null ); } }

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