<?php

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namespace Automattic\WooCommerce\StoreApi\Utilities;

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/**

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* ValidationUtils class.

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* Helper class which validates and update customer info.

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*/

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class ValidationUtils {

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/**

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* Get list of states for a country.

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*

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* @param string $country Country code.

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* @return array Array of state names indexed by state keys.

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*/

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public function get_states_for_country( $country ) {

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return $country ? array_filter( (array) \wc()->countries->get_states( $country ) ) : [];

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}

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/**

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* Validate provided state against a countries list of defined states.

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*

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* If there are no defined states for a country, any given state is valid.

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*

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* @param string $state State name or code (sanitized).

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* @param string $country Country code.

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* @return boolean Valid or not valid.

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*/

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public function validate_state( $state, $country ) {

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$states = $this->get_states_for_country( $country );

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if ( count( $states ) && ! in_array( \wc_strtoupper( $state ), array_map( '\wc_strtoupper', array_keys( $states ) ), true ) ) {

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return false;

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}

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return true;

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}

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/**

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* Format a state based on the country. If country has defined states, will return a valid upper case state code.

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*

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* @param string $state State name or code (sanitized).

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* @param string $country Country code.

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* @return string

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*/

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public function format_state( $state, $country ) {

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$states = $this->get_states_for_country( $country );

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if ( count( $states ) ) {

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$state = \wc_strtoupper( $state );

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$state_values = array_map( '\wc_strtoupper', array_flip( array_map( '\wc_strtoupper', $states ) ) );

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if ( isset( $state_values[ $state ] ) ) {

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// Convert to state code if a state name was provided.

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return $state_values[ $state ];

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}

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}

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return $state;

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}

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}

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