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<?php |
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/** |
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* Contains the main tax class. |
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* |
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* |
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*/ |
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defined( 'ABSPATH' ) || exit; |
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/** |
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* Class GetPaid_Tax |
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* |
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*/ |
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class GetPaid_Tax { |
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/** |
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* Calculates tax for a line item. |
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* |
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* @param float $price The price to calc tax on. |
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* @param array $rates The rates to apply. |
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* @param boolean $price_includes_tax Whether the passed price has taxes included. |
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* @return array Array of tax name => tax amount. |
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*/ |
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public static function calc_tax( $price, $rates, $price_includes_tax = false ) { |
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if ( $price_includes_tax ) { |
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$taxes = self::calc_inclusive_tax( $price, $rates ); |
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} else { |
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$taxes = self::calc_exclusive_tax( $price, $rates ); |
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} |
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return apply_filters( 'getpaid_calc_tax', $taxes, $price, $rates, $price_includes_tax ); |
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} |
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/** |
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* Calc tax from inclusive price. |
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* |
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* @param float $price Price to calculate tax for. |
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* @param array $rates Array of tax rates. |
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* @return array |
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*/ |
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public static function calc_inclusive_tax( $price, $rates ) { |
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$taxes = array(); |
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$tax_rates = wp_list_pluck( $rates, 'rate', 'name' ); |
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// Add tax rates. |
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$tax_rate = 1 + ( array_sum( $tax_rates ) / 100 ); |
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foreach ( $tax_rates as $name => $rate ) { |
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$the_rate = ( $rate / 100 ) / $tax_rate; |
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$net_price = $price - ( $the_rate * $price ); |
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$tax_amount = apply_filters( 'getpaid_price_inc_tax_amount', $price - $net_price, $name, $rate, $price ); |
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$taxes[ $name ] = $tax_amount; |
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} |
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// Round all taxes to precision (4DP) before passing them back. |
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$taxes = array_map( array( __CLASS__, 'round' ), $taxes ); |
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return $taxes; |
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} |
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/** |
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* Calc tax from exclusive price. |
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* |
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* @param float $price Price to calculate tax for. |
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* @param array $rates Array of tax rates. |
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* @return array |
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*/ |
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public static function calc_exclusive_tax( $price, $rates ) { |
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$taxes = array(); |
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$tax_rates = wp_list_pluck( $rates, 'rate', 'name' ); |
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foreach ( $tax_rates as $name => $rate ) { |
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$tax_amount = $price * ( $rate / 100 ); |
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$taxes[ $name ] = apply_filters( 'getpaid_price_ex_tax_amount', $tax_amount, $name, $rate, $price ); |
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} |
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// Round all taxes to precision (4DP) before passing them back. |
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$taxes = array_map( array( __CLASS__, 'round' ), $taxes ); |
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return $taxes; |
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} |
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/** |
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* Get's an array of all tax rates. |
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* |
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* @return array |
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*/ |
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public static function get_all_tax_rates() { |
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$rates = get_option( 'wpinv_tax_rates', array() ); |
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return apply_filters( |
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'getpaid_get_all_tax_rates', |
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array_filter( wpinv_parse_list( $rates ) ) |
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); |
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} |
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/** |
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* Get's an array of default tax rates. |
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* |
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* @return array |
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*/ |
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public static function get_default_tax_rates() { |
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return apply_filters( |
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'getpaid_get_default_tax_rates', |
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array( |
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array( |
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'country' => wpinv_get_default_country(), |
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'state' => wpinv_get_default_state(), |
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'global' => true, |
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'rate' => wpinv_get_default_tax_rate(), |
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'name' => __( 'Base Tax', 'invoicing' ), |
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), |
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) |
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); |
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} |
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/** |
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* Get's an array of all tax rules. |
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* |
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* @return array |
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*/ |
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public static function get_all_tax_rules() { |
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$rules = get_option( |
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'wpinv_tax_rules', |
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array( |
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array( |
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'key' => 'physical', |
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'label' => __( 'Physical Item', 'invoicing' ), |
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'tax_base' => wpinv_get_option( 'tax_base', 'billing' ), |
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), |
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array( |
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'key' => 'digital', |
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'label' => __( 'Digital Item', 'invoicing' ), |
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'tax_base' => wpinv_get_option( 'tax_base', 'billing' ), |
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), |
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) |
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); |
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return apply_filters( |
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'getpaid_tax_rules', |
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array_filter( array_values( wpinv_parse_list( $rules ) ) ) |
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); |
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} |
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/** |
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* Get's an array of tax rates for a given address. |
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* |
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* @param string $country |
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* @param string $state |
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* @return array |
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*/ |
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public static function get_address_tax_rates( $country, $state ) { |
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$all_tax_rates = self::get_all_tax_rates(); |
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$matching_rates = array_merge( |
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wp_list_filter( $all_tax_rates, array( 'country' => $country ) ), |
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wp_list_filter( $all_tax_rates, array( 'country' => '' ) ) |
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); |
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foreach ( $matching_rates as $i => $rate ) { |
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$states = array_filter( wpinv_clean( explode( ',', strtolower( $rate['state'] ) ) ) ); |
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if ( empty( $rate['global'] ) && ! in_array( strtolower( $state ), $states ) ) { |
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unset( $matching_rates[ $i ] ); |
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} |
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} |
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return apply_filters( 'getpaid_get_address_tax_rates', $matching_rates, $country, $state ); |
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} |
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/** |
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* Sums a set of taxes to form a single total. Result is rounded to precision. |
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* |
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* @param array $taxes Array of taxes. |
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* @return float |
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*/ |
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public static function get_tax_total( $taxes ) { |
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return self::round( array_sum( $taxes ) ); |
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} |
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/** |
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* Round to precision. |
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* |
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* Filter example: to return rounding to .5 cents you'd use: |
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* |
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* function euro_5cent_rounding( $in ) { |
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* return round( $in / 5, 2 ) * 5; |
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* } |
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* add_filter( 'getpaid_tax_round', 'euro_5cent_rounding' ); |
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* |
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* @param float|int $in Value to round. |
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* @return float |
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*/ |
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public static function round( $in ) { |
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return apply_filters( 'getpaid_tax_round', round( $in, 4 ), $in ); |
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} |
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} |
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AyeCode /
invoicing
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