<?php
/*********************************************************************************
 *
 * TimeTrex is a Workforce Management program developed by
 * TimeTrex Software Inc. Copyright (C) 2003 - 2021 TimeTrex Software Inc.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation with the addition of the following permission
 * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED
 * WORK IN WHICH THE COPYRIGHT IS OWNED BY TIMETREX, TIMETREX DISCLAIMS THE
 * WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
 * details.
 *
 *
 * You should have received a copy of the GNU Affero General Public License along
 * with this program; if not, see http://www.gnu.org/licenses or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 *
 *
 * You can contact TimeTrex headquarters at Unit 22 - 2475 Dobbin Rd. Suite
 * #292 West Kelowna, BC V4T 2E9, Canada or at email address info@timetrex.com.
 *
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 *
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License
 * version 3, these Appropriate Legal Notices must retain the display of the
 * "Powered by TimeTrex" logo. If the display of the logo is not reasonably
 * feasible for technical reasons, the Appropriate Legal Notices must display
 * the words "Powered by TimeTrex".
 *
 ********************************************************************************/


/**
 * @package PayrollDeduction\US
 */
class PayrollDeduction_US_MI extends PayrollDeduction_US {

	var $state_options = [
			20220101 => [
					'rate'      => 4.25,
					'allowance' => 5000,
			],
			20210101 => [
					'rate'      => 4.25,
					'allowance' => 4900,
			],
			20200101 => [
					'rate'      => 4.25,
					'allowance' => 4750,
			],
			20190101 => [
					'rate'      => 4.25,
					'allowance' => 4400,
			],
			20180101 => [
					'rate'      => 4.25,
					'allowance' => 4050,
			],
			20140101 => [
					'rate'      => 4.25,
					'allowance' => 4000,
			],
			20130101 => [
					'rate'      => 4.25,
					'allowance' => 3950,
			],
			20110101 => [
					'rate'      => 4.35,
					'allowance' => 3700,
			],
			20090101 => [
					'rate'      => 4.35,
					'allowance' => 3600,
			],
			20071001 => [ //01-Oct-07
						  'rate'      => 4.35,
						  'allowance' => 3400,
			],
			20070101 => [
					'rate'      => 3.9,
					'allowance' => 3400,
			],
			20060101 => [
					'rate'      => 3.9,
					'allowance' => 3300,
			],
	];

	var $state_ui_options = [
			20060101 => [ 'wage_base' => 9500, 'new_employer_rate' => 2.7 ],
	];

	function getStateAnnualTaxableIncome() {
		$annual_income = $this->getAnnualTaxableIncome();

		$allowance = $this->getStateAllowanceAmount();

		$income = bcsub( $annual_income, $allowance );

		Debug::text( 'State Annual Taxable Income: ' . $income, __FILE__, __LINE__, __METHOD__, 10 );

		return $income;
	}


	function getStateAllowanceAmount() {
		$retarr = $this->getDataFromRateArray( $this->getDate(), $this->state_options );
		if ( $retarr == false ) {
			return false;
		}

		$allowance = $retarr['allowance'];

		$retval = bcmul( $this->getStateAllowance(), $allowance );

		Debug::text( 'State Allowance Amount: ' . $retval, __FILE__, __LINE__, __METHOD__, 10 );

		return $retval;
	}

	function _getStateTaxPayable() {
		$annual_income = $this->getStateAnnualTaxableIncome();

		$retval = 0;

		if ( $annual_income > 0 ) {
			$retarr = $this->getDataFromRateArray( $this->getDate(), $this->state_options );
			if ( $retarr == false ) {
				return false;
			}

			$rate = bcdiv( $retarr['rate'], 100 );
			$retval = bcmul( $annual_income, $rate );
		}

		if ( $retval < 0 ) {
			$retval = 0;
		}

		Debug::text( 'State Annual Tax Payable: ' . $retval, __FILE__, __LINE__, __METHOD__, 10 );

		return $retval;
	}
}

?>