/**
  * Returns a string representing the details of the subscription. 
  *
  * For example "$20 per Month for 3 Months with a $10 sign-up fee".
  *
  * @param WC_Product|int $product A WC_Product object or ID of a WC_Product.
  * @param array $inclusions An associative array of flags to indicate how to calculate the price and what to include, values:
  *			'tax_calculation'     => false to ignore tax, 'include_tax' or 'exclude_tax' To indicate that tax should be added or excluded respectively
  *			'subscription_length' => true to include subscription's length (default) or false to exclude it
  *			'sign_up_fee'         => true to include subscription's sign up fee (default) or false to exclude it
  *			'price'               => string a price to short-circuit the price calculations and use in a string for the product
  * @since 1.0
  */
 public static function get_price_string($product, $include = array())
 {
     if (!is_object($product)) {
         $product = WC_Subscriptions::get_product($product);
     }
     if (!self::is_subscription($product)) {
         return;
     }
     $include = wp_parse_args($include, array('tax_calculation' => false, 'subscription_price' => true, 'subscription_period' => true, 'subscription_length' => true, 'sign_up_fee' => true, 'trial_length' => true));
     $include = apply_filters('woocommerce_subscriptions_product_price_string_inclusions', $include, $product);
     $base_price = self::get_price($product);
     if (true === $include['sign_up_fee']) {
         $sign_up_fee = self::get_sign_up_fee($product);
     } elseif (false !== $include['sign_up_fee']) {
         // Allow override of product's sign-up fee
         $sign_up_fee = $include['sign_up_fee'];
     } else {
         $sign_up_fee = 0;
     }
     if ($include['tax_calculation'] != false) {
         if ($include['tax_calculation'] == 'exclude_tax') {
             // Subtract Tax
             $tax_per_period = self::calculate_tax_for_subscription($base_price, $product);
             if (isset($include['price'])) {
                 $price = $include['price'];
             } else {
                 $price = woocommerce_price($base_price - $tax_per_period);
             }
             if ($sign_up_fee > 0) {
                 $sign_up_tax = self::calculate_tax_for_subscription($sign_up_fee, $product);
                 $sign_up_fee = $sign_up_fee - $sign_up_tax;
             }
         } else {
             // Add Tax
             $tax_per_period = self::calculate_tax_for_subscription($base_price, $product, true);
             if (isset($include['price'])) {
                 $price = $include['price'];
             } else {
                 $price = woocommerce_price($base_price + $tax_per_period);
             }
             if ($sign_up_fee > 0) {
                 $sign_up_tax = self::calculate_tax_for_subscription($sign_up_fee, $product, true);
                 $sign_up_fee = $sign_up_fee - $sign_up_tax;
             }
         }
     } else {
         if (isset($include['price'])) {
             $price = $include['price'];
         } else {
             $price = woocommerce_price($base_price);
         }
     }
     $billing_interval = self::get_interval($product);
     $subscription_length = self::get_length($product);
     $trial_length = self::get_trial_length($product);
     $trial_period = self::get_trial_period($product);
     if (is_numeric($sign_up_fee)) {
         $sign_up_fee = woocommerce_price($sign_up_fee);
     }
     if ($include['subscription_length']) {
         $ranges = WC_Subscriptions_Manager::get_subscription_ranges(self::get_period($product));
     }
     if ($include['subscription_length'] && $subscription_length != 0) {
         $include_length = true;
     } else {
         $include_length = false;
     }
     $subscription_string = '';
     if ($include['subscription_price'] && $include['subscription_period']) {
         // Allow extensions to not show price or billing period e.g. Name Your Price
         if ($include_length && $subscription_length == $billing_interval) {
             $subscription_string = $price;
             // Only for one billing period so show "$5 for 3 months" instead of "$5 every 3 months for 3 months"
         } else {
             $subscription_string = sprintf(_n(' %s / %s', ' %s every %s', $billing_interval, 'woocommerce-subscriptions'), $price, WC_Subscriptions_Manager::get_subscription_period_strings($billing_interval, self::get_period($product)));
         }
     } elseif ($include['subscription_price']) {
         $subscription_string = $price;
     } elseif ($include['subscription_period']) {
         $subscription_string = sprintf(_n('%s', 'every %s', $billing_interval, 'woocommerce-subscriptions'), WC_Subscriptions_Manager::get_subscription_period_strings($billing_interval, self::get_period($product)));
     }
     // Add the length to the end
     if ($include_length) {
         $subscription_string = sprintf(__('%s for %s', 'woocommerce-subscriptions'), $subscription_string, $ranges[$subscription_length]);
     }
     if ($include['trial_length'] && $trial_length != 0) {
         $trial_string = WC_Subscriptions_Manager::get_subscription_trial_period_strings($trial_length, $trial_period);
         $subscription_string = sprintf(__('%s with %s free trial', 'woocommerce-subscriptions'), $subscription_string, $trial_string);
     }
     if ($include['sign_up_fee'] && self::get_sign_up_fee($product) > 0) {
         $subscription_string = sprintf(__('%s and a %s sign-up fee', 'woocommerce-subscriptions'), $subscription_string, $sign_up_fee);
     }
     return apply_filters('woocommerce_subscriptions_product_price_string', $subscription_string, $product, $include);
 }
 /**
  * Returns a string representing the details of the subscription. 
  *
  * For example "$20 per Month for 3 Months with a $10 sign-up fee".
  *
  * @param WC_Product|int $product A WC_Product object or ID of a WC_Product.
  * @param array $inclusions An associative array of flags to indicate how to calculate the price and what to include, values:
  *			'tax_calculation'     => false to ignore tax, 'include_tax' or 'exclude_tax' To indicate that tax should be added or excluded respectively
  *			'subscription_length' => true to include subscription's length (default) or false to exclude it
  *			'sign_up_fee'         => true to include subscription's sign up fee (default) or false to exclude it
  *			'price'               => string a price to short-circuit the price calculations and use in a string for the product
  * @since 1.0
  */
 public static function get_price_string($product, $include = array())
 {
     global $wp_locale;
     if (!is_object($product)) {
         $product = WC_Subscriptions::get_product($product);
     }
     if (!self::is_subscription($product)) {
         return;
     }
     $include = wp_parse_args($include, array('tax_calculation' => get_option('woocommerce_tax_display_shop'), 'subscription_price' => true, 'subscription_period' => true, 'subscription_length' => true, 'sign_up_fee' => true, 'trial_length' => true));
     $include = apply_filters('woocommerce_subscriptions_product_price_string_inclusions', $include, $product);
     $base_price = self::get_price($product);
     if (true === $include['sign_up_fee']) {
         $sign_up_fee = self::get_sign_up_fee($product);
     } elseif (false !== $include['sign_up_fee']) {
         // Allow override of product's sign-up fee
         $sign_up_fee = $include['sign_up_fee'];
     } else {
         $sign_up_fee = 0;
     }
     if ($include['tax_calculation'] != false) {
         if (in_array($include['tax_calculation'], array('exclude_tax', 'excl'))) {
             // Subtract Tax
             if (isset($include['price'])) {
                 $price = $include['price'];
             } else {
                 $price = $product->get_price_excluding_tax(1, $include['price']);
             }
             if (true === $include['sign_up_fee']) {
                 $sign_up_fee = $product->get_sign_up_fee_excluding_tax();
             }
         } else {
             // Add Tax
             if (isset($include['price'])) {
                 $price = $include['price'];
             } else {
                 $price = $product->get_price_including_tax();
             }
             if (true === $include['sign_up_fee']) {
                 $sign_up_fee = $product->get_sign_up_fee_including_tax();
             }
         }
     } else {
         if (isset($include['price'])) {
             $price = $include['price'];
         } else {
             $price = woocommerce_price($base_price);
         }
     }
     $price .= ' <span class="subscription-details">';
     $billing_interval = self::get_interval($product);
     $billing_period = self::get_period($product);
     $subscription_length = self::get_length($product);
     $trial_length = self::get_trial_length($product);
     $trial_period = self::get_trial_period($product);
     if (is_numeric($sign_up_fee)) {
         $sign_up_fee = woocommerce_price($sign_up_fee);
     }
     if ($include['subscription_length']) {
         $ranges = WC_Subscriptions_Manager::get_subscription_ranges($billing_period);
     }
     if ($include['subscription_length'] && $subscription_length != 0) {
         $include_length = true;
     } else {
         $include_length = false;
     }
     $subscription_string = '';
     if ($include['subscription_price'] && $include['subscription_period']) {
         // Allow extensions to not show price or billing period e.g. Name Your Price
         if ($include_length && $subscription_length == $billing_interval) {
             $subscription_string = $price;
             // Only for one billing period so show "$5 for 3 months" instead of "$5 every 3 months for 3 months"
         } elseif (WC_Subscriptions_Synchroniser::is_product_synced($product) && in_array($billing_period, array('week', 'month', 'year'))) {
             $payment_day = WC_Subscriptions_Synchroniser::get_products_payment_day($product);
             switch ($billing_period) {
                 case 'week':
                     $payment_day_of_week = WC_Subscriptions_Synchroniser::get_weekday($payment_day);
                     if (1 == $billing_interval) {
                         // e.g. $5 every Wednesday
                         $subscription_string = sprintf(__('%s every %s', 'woocommerce-subscriptions'), $price, $payment_day_of_week);
                     } else {
                         // e.g. $5 every 2 weeks on Wednesday
                         $subscription_string = sprintf(__('%s every %s on %s', 'woocommerce-subscriptions'), $price, WC_Subscriptions_Manager::get_subscription_period_strings($billing_interval, $billing_period), $payment_day_of_week);
                     }
                     break;
                 case 'month':
                     if (1 == $billing_interval) {
                         // e.g. $15 on the 15th of each month
                         if ($payment_day > 27) {
                             $subscription_string = sprintf(__('%s on the last day of each month', 'woocommerce-subscriptions'), $price);
                         } else {
                             $subscription_string = sprintf(__('%s on the %s of each month', 'woocommerce-subscriptions'), $price, WC_Subscriptions::append_numeral_suffix($payment_day));
                         }
                     } else {
                         // e.g. $15 on the 15th of every 3rd month
                         if ($payment_day > 27) {
                             $subscription_string = sprintf(__('%s on the last day of every %s month', 'woocommerce-subscriptions'), $price, WC_Subscriptions::append_numeral_suffix($billing_interval));
                         } else {
                             $subscription_string = sprintf(__('%s on the %s day of every %s month', 'woocommerce-subscriptions'), $price, WC_Subscriptions::append_numeral_suffix($payment_day), WC_Subscriptions::append_numeral_suffix($billing_interval));
                         }
                     }
                     break;
                 case 'year':
                     if (1 == $billing_interval) {
                         // e.g. $15 on March 15th each year
                         $subscription_string = sprintf(__('%s on %s %s each year', 'woocommerce-subscriptions'), $price, $wp_locale->month[$payment_day['month']], WC_Subscriptions::append_numeral_suffix($payment_day['day']));
                     } else {
                         // e.g. $15 on March 15th every 3rd year
                         $subscription_string = sprintf(__('%s on %s %s every %s year', 'woocommerce-subscriptions'), $price, $wp_locale->month[$payment_day['month']], WC_Subscriptions::append_numeral_suffix($payment_day['day']), WC_Subscriptions::append_numeral_suffix($billing_interval));
                     }
                     break;
             }
         } else {
             $subscription_string = sprintf(_n('%s / %s', ' %s every %s', $billing_interval, 'woocommerce-subscriptions'), $price, WC_Subscriptions_Manager::get_subscription_period_strings($billing_interval, $billing_period));
         }
     } elseif ($include['subscription_price']) {
         $subscription_string = $price;
     } elseif ($include['subscription_period']) {
         $subscription_string = sprintf(_n('%s', 'every %s', $billing_interval, 'woocommerce-subscriptions'), WC_Subscriptions_Manager::get_subscription_period_strings($billing_interval, $billing_period));
     }
     // Add the length to the end
     if ($include_length) {
         $subscription_string = sprintf(__('%s for %s', 'woocommerce-subscriptions'), $subscription_string, $ranges[$subscription_length]);
     }
     if ($include['trial_length'] && $trial_length != 0) {
         $trial_string = WC_Subscriptions_Manager::get_subscription_trial_period_strings($trial_length, $trial_period);
         $subscription_string = sprintf(__('%s with %s free trial', 'woocommerce-subscriptions'), $subscription_string, $trial_string);
     }
     if ($include['sign_up_fee'] && self::get_sign_up_fee($product) > 0) {
         $subscription_string = sprintf(__('%s and a %s sign-up fee', 'woocommerce-subscriptions'), $subscription_string, $sign_up_fee);
     }
     $subscription_string .= '</span>';
     return apply_filters('woocommerce_subscriptions_product_price_string', $subscription_string, $product, $include);
 }
 /**
  * Returns a string representing the details of the subscription. 
  * 
  * For example "$20 per Month for 3 Months with a $10 sign-up fee".
  * 
  * @param $product WC_Product | Int A WC_Product object or ID of a WC_Product.
  * @param $inclusions array An associative array of flags to indicate how to calculate the price and what to include, values:
  *			'tax_calculation'     => false to ignore tax, 'include_tax' or 'exclude_tax' To indicate that tax should be added or excluded respectively
  *			'subscription_length' => true to include subscription's length (default) or false to exclude it
  *			'sign_up_fee'         => true to include subscription's sign up fee (default) or false to exclude it
  *			'price'               => string a price to short-circuit the price calculations and use in a string for the product
  * @since 1.0
  */
 public static function get_price_string($product, $include = array())
 {
     if (!is_object($product)) {
         $product = new WC_Product($product);
     }
     // Shouldn't matter if product is variation as all we need is the product_type
     if (!self::is_subscription($product)) {
         return;
     }
     $include = wp_parse_args($include, array('tax_calculation' => false, 'subscription_length' => true, 'sign_up_fee' => true, 'trial_length' => true));
     $base_price = self::get_price($product);
     $sign_up_fee = self::get_sign_up_fee($product);
     if ($include['tax_calculation'] != false) {
         if ($include['tax_calculation'] == 'exclude_tax') {
             // Subtract Tax
             $tax_per_period = self::calculate_tax_for_subscription($base_price, $product);
             if (isset($include['price'])) {
                 $price = $include['price'];
             } else {
                 $price = woocommerce_price($base_price - $tax_per_period);
             }
             if ($sign_up_fee > 0) {
                 $sign_up_tax = self::calculate_tax_for_subscription($sign_up_fee, $product);
                 $sign_up_fee = $sign_up_fee - $sign_up_tax;
             }
         } else {
             // Add Tax
             $tax_per_period = self::calculate_tax_for_subscription($base_price, $product, true);
             if (isset($include['price'])) {
                 $price = $include['price'];
             } else {
                 $price = woocommerce_price($base_price + $tax_per_period);
             }
             if ($sign_up_fee > 0) {
                 $sign_up_tax = self::calculate_tax_for_subscription($sign_up_fee, $product, true);
                 $sign_up_fee = $sign_up_fee - $sign_up_tax;
             }
         }
     } else {
         if (isset($include['price'])) {
             $price = $include['price'];
         } else {
             $price = woocommerce_price($base_price);
         }
     }
     $billing_interval = self::get_interval($product);
     $subscription_length = self::get_length($product);
     $trial_length = self::get_trial_length($product);
     $trial_period = self::get_trial_period($product);
     if ($include['subscription_length']) {
         $ranges = WC_Subscriptions_Manager::get_subscription_ranges(self::get_period($product));
     }
     if ($include['subscription_length'] && $subscription_length != 0) {
         $include_length = true;
     } else {
         $include_length = false;
     }
     if ($include_length && $subscription_length == $billing_interval) {
         $subscription_string = $price;
     } else {
         $subscription_string = sprintf(_n(' %s / %s', ' %s every %s', $billing_interval, WC_Subscriptions::$text_domain), $price, WC_Subscriptions_Manager::get_subscription_period_strings($billing_interval, self::get_period($product)));
     }
     // Add the length to the end
     if ($include_length) {
         $subscription_string = sprintf(__('%s for %s', WC_Subscriptions::$text_domain), $subscription_string, $ranges[$subscription_length]);
     }
     if ($include['trial_length'] && $trial_length != 0) {
         $trial_string = WC_Subscriptions_Manager::get_subscription_trial_period_strings($trial_length, $trial_period);
         $subscription_string = sprintf(__('%s with %s free trial', WC_Subscriptions::$text_domain), $subscription_string, $trial_string);
     }
     if ($include['sign_up_fee'] && self::get_sign_up_fee($product) > 0) {
         $subscription_string = sprintf(__('%s and a %s sign-up fee', WC_Subscriptions::$text_domain), $subscription_string, woocommerce_price($sign_up_fee));
     }
     return apply_filters('woocommerce_subscriptions_product_price_string', $subscription_string, $product, $include);
 }