woothemes/woocommerce

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includes/class-wc-shipping-zone.php

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<?php
/**
 * Represents a single shipping zone
 *
 * @since   2.6.0
 * @version 3.0.0
 * @package WooCommerce\Classes
 */

defined( 'ABSPATH' ) || exit;

require_once __DIR__ . '/legacy/class-wc-legacy-shipping-zone.php';

/**
 * WC_Shipping_Zone class.
 */
class WC_Shipping_Zone extends WC_Legacy_Shipping_Zone {

    /**
     * Zone ID
     *
     * @var int|null
     */
    protected $id = null;

    /**
     * This is the name of this object type.
     *
     * @var string
     */
    protected $object_type = 'shipping_zone';

    /**
     * Zone Data.
     *
     * @var array
     */
    protected $data = array(
        'zone_name'      => '',
        'zone_order'     => 0,
        'zone_locations' => array(),
    );

    /**
     * Constructor for zones.
     *
     * @param int|object $zone Zone ID to load from the DB or zone object.
     */
    public function __construct( $zone = null ) {
        if ( is_numeric( $zone ) && ! empty( $zone ) ) {
            $this->set_id( $zone );
        } elseif ( is_object( $zone ) ) {
            $this->set_id( $zone->zone_id );
        } elseif ( 0 === $zone || '0' === $zone ) {
            $this->set_id( 0 );
        } else {
            $this->set_object_read( true );
        }

        $this->data_store = WC_Data_Store::load( 'shipping-zone' );
        if ( false === $this->get_object_read() ) {
            $this->data_store->read( $this );
        }
    }

    /**
     * --------------------------------------------------------------------------
     * Getters
     * --------------------------------------------------------------------------
     */

    /**
     * Get zone name.
     *
     * @param  string $context View or edit context.
     * @return string
     */
    public function get_zone_name( $context = 'view' ) {
        return $this->get_prop( 'zone_name', $context );
    }

    /**
     * Get zone order.
     *
     * @param  string $context View or edit context.
     * @return int
     */
    public function get_zone_order( $context = 'view' ) {
        return $this->get_prop( 'zone_order', $context );
    }

    /**
     * Get zone locations.
     *
     * @param  string $context View or edit context.
     * @return array of zone objects
     */
    public function get_zone_locations( $context = 'view' ) {
        return $this->get_prop( 'zone_locations', $context );
    }

    /**
     * Return a text string representing what this zone is for.
     *
     * @param  int    $max Max locations to return.
     * @param  string $context View or edit context.
     * @return string
     */
    public function get_formatted_location( $max = 10, $context = 'view' ) {
        $location_parts = array();
        $all_continents = WC()->countries->get_continents();
        $all_countries  = WC()->countries->get_countries();
        $all_states     = WC()->countries->get_states();
        $locations      = $this->get_zone_locations( $context );
        $continents     = array_filter( $locations, array( $this, 'location_is_continent' ) );
        $countries      = array_filter( $locations, array( $this, 'location_is_country' ) );
        $states         = array_filter( $locations, array( $this, 'location_is_state' ) );
        $postcodes      = array_filter( $locations, array( $this, 'location_is_postcode' ) );

        foreach ( $continents as $location ) {
            $location_parts[] = $all_continents[ $location->code ]['name'];
        }

        foreach ( $countries as $location ) {
            $location_parts[] = $all_countries[ $location->code ];
        }

        foreach ( $states as $location ) {
            $location_codes   = explode( ':', $location->code );
            $location_parts[] = $all_states[ $location_codes[0] ][ $location_codes[1] ];
        }

        foreach ( $postcodes as $location ) {
            $location_parts[] = $location->code;
        }

        // Fix display of encoded characters.
        $location_parts = array_map( 'html_entity_decode', $location_parts );

        if ( count( $location_parts ) > $max ) {
            $remaining = count( $location_parts ) - $max;
            // @codingStandardsIgnoreStart
            return sprintf( _n( '%s and %d other region', '%s and %d other regions', $remaining, 'woocommerce' ), implode( ', ', array_splice( $location_parts, 0, $max ) ), $remaining );
            // @codingStandardsIgnoreEnd
        } elseif ( ! empty( $location_parts ) ) {
            return implode( ', ', $location_parts );
        } else {
            return __( 'Everywhere', 'woocommerce' );
        }
    }

    /**
     * Get shipping methods linked to this zone.
     *
     * @param bool   $enabled_only Only return enabled methods.
     * @param string $context Getting shipping methods for what context. Valid values, admin, json.
     * @return array of objects
     */
    public function get_shipping_methods( $enabled_only = false, $context = 'admin' ) {
        if ( null === $this->get_id() ) {
            return array();
        }

        $raw_methods     = $this->data_store->get_methods( $this->get_id(), $enabled_only );
        $wc_shipping     = WC_Shipping::instance();
        $allowed_classes = $wc_shipping->get_shipping_method_class_names();
        $methods         = array();

        foreach ( $raw_methods as $raw_method ) {
            if ( in_array( $raw_method->method_id, array_keys( $allowed_classes ), true ) ) {
                $class_name  = $allowed_classes[ $raw_method->method_id ];
                $instance_id = $raw_method->instance_id;

                // The returned array may contain instances of shipping methods, as well
                // as classes. If the "class" is an instance, just use it. If not,
                // create an instance.
                if ( is_object( $class_name ) ) {
                    $class_name_of_instance  = get_class( $class_name );
                    $methods[ $instance_id ] = new $class_name_of_instance( $instance_id );
                } else {
                    // If the class is not an object, it should be a string. It's better
                    // to double check, to be sure (a class must be a string, anything)
                    // else would be useless.
                    if ( is_string( $class_name ) && class_exists( $class_name ) ) {
                        $methods[ $instance_id ] = new $class_name( $instance_id );
                    }
                }

                // Let's make sure that we have an instance before setting its attributes.
                if ( is_object( $methods[ $instance_id ] ) ) {
                    $methods[ $instance_id ]->method_order       = absint( $raw_method->method_order );
                    $methods[ $instance_id ]->enabled            = $raw_method->is_enabled ? 'yes' : 'no';
                    $methods[ $instance_id ]->has_settings       = $methods[ $instance_id ]->has_settings();
                    $methods[ $instance_id ]->settings_html      = $methods[ $instance_id ]->supports( 'instance-settings-modal' ) ? $methods[ $instance_id ]->get_admin_options_html() : false;
                    $methods[ $instance_id ]->method_description = wp_kses_post( wpautop( $methods[ $instance_id ]->method_description ) );
                }

                if ( 'json' === $context ) {
                    // We don't want the entire object in this context, just the public props.
                    $methods[ $instance_id ] = (object) get_object_vars( $methods[ $instance_id ] );
                    unset( $methods[ $instance_id ]->instance_form_fields, $methods[ $instance_id ]->form_fields );
                }
            }
        }

        uasort( $methods, 'wc_shipping_zone_method_order_uasort_comparison' );

        return apply_filters( 'woocommerce_shipping_zone_shipping_methods', $methods, $raw_methods, $allowed_classes, $this );
    }

    /**
     * --------------------------------------------------------------------------
     * Setters
     * --------------------------------------------------------------------------
     */

    /**
     * Set zone name.
     *
     * @param string $set Value to set.
     */
    public function set_zone_name( $set ) {
        $this->set_prop( 'zone_name', wc_clean( $set ) );
    }

    /**
     * Set zone order. Value to set.
     *
     * @param int $set Value to set.
     */
    public function set_zone_order( $set ) {
        $this->set_prop( 'zone_order', absint( $set ) );
    }

    /**
     * Set zone locations.
     *
     * @since 3.0.0
     * @param array $locations Value to set.
     */
    public function set_zone_locations( $locations ) {
        if ( 0 !== $this->get_id() ) {
            $this->set_prop( 'zone_locations', $locations );
        }
    }

    /**
     * --------------------------------------------------------------------------
     * Other
     * --------------------------------------------------------------------------
     */

    /**
     * Save zone data to the database.
     *
     * @return int
     */
    public function save() {
        if ( ! $this->get_zone_name() ) {
            $this->set_zone_name( $this->generate_zone_name() );
        }

        if ( ! $this->data_store ) {
            return $this->get_id();
        }

        /**
         * Trigger action before saving to the DB. Allows you to adjust object props before save.
         *
         * @param WC_Data          $this The object being saved.
         * @param WC_Data_Store_WP $data_store THe data store persisting the data.
         */
        do_action( 'woocommerce_before_' . $this->object_type . '_object_save', $this, $this->data_store );

        if ( null !== $this->get_id() ) {
            $this->data_store->update( $this );
        } else {
            $this->data_store->create( $this );
        }

        /**
         * Trigger action after saving to the DB.
         *
         * @param WC_Data          $this The object being saved.
         * @param WC_Data_Store_WP $data_store THe data store persisting the data.
         */
        do_action( 'woocommerce_after_' . $this->object_type . '_object_save', $this, $this->data_store );

        return $this->get_id();
    }

    /**
     * Generate a zone name based on location.
     *
     * @return string
     */
    protected function generate_zone_name() {
        $zone_name = $this->get_formatted_location();

        if ( empty( $zone_name ) ) {
            $zone_name = __( 'Zone', 'woocommerce' );
        }

        return $zone_name;
    }

    /**
     * Location type detection.
     *
     * @param  object $location Location to check.
     * @return boolean
     */
    private function location_is_continent( $location ) {
        return 'continent' === $location->type;
    }

    /**
     * Location type detection.
     *
     * @param  object $location Location to check.
     * @return boolean
     */
    private function location_is_country( $location ) {
        return 'country' === $location->type;
    }

    /**
     * Location type detection.
     *
     * @param  object $location Location to check.
     * @return boolean
     */
    private function location_is_state( $location ) {
        return 'state' === $location->type;
    }

    /**
     * Location type detection.
     *
     * @param  object $location Location to check.
     * @return boolean
     */
    private function location_is_postcode( $location ) {
        return 'postcode' === $location->type;
    }

    /**
     * Is passed location type valid?
     *
     * @param  string $type Type to check.
     * @return boolean
     */
    public function is_valid_location_type( $type ) {
        return in_array( $type, apply_filters( 'woocommerce_valid_location_types', array( 'postcode', 'state', 'country', 'continent' ) ), true );
    }

    /**
     * Add location (state or postcode) to a zone.
     *
     * @param string $code Location code.
     * @param string $type state or postcode.
     */
    public function add_location( $code, $type ) {
        if ( 0 !== $this->get_id() && $this->is_valid_location_type( $type ) ) {
            if ( 'postcode' === $type ) {
                $code = trim( strtoupper( str_replace( chr( 226 ) . chr( 128 ) . chr( 166 ), '...', $code ) ) ); // No normalization - postcodes are matched against both normal and formatted versions to support wildcards.
            }
            $location         = array(
                'code' => wc_clean( $code ),
                'type' => wc_clean( $type ),
            );
            $zone_locations   = $this->get_prop( 'zone_locations', 'edit' );
            $zone_locations[] = (object) $location;
            $this->set_prop( 'zone_locations', $zone_locations );
        }
    }


    /**
     * Clear all locations for this zone.
     *
     * @param array|string $types of location to clear.
     */
    public function clear_locations( $types = array( 'postcode', 'state', 'country', 'continent' ) ) {
        if ( ! is_array( $types ) ) {
            $types = array( $types );
        }
        $zone_locations = $this->get_prop( 'zone_locations', 'edit' );
        foreach ( $zone_locations as $key => $values ) {
            if ( in_array( $values->type, $types, true ) ) {
                unset( $zone_locations[ $key ] );
            }
        }
        $zone_locations = array_values( $zone_locations ); // reindex.
        $this->set_prop( 'zone_locations', $zone_locations );
    }

    /**
     * Set locations.
     *
     * @param array $locations Array of locations.
     */
    public function set_locations( $locations = array() ) {
        $this->clear_locations();
        foreach ( $locations as $location ) {
            $this->add_location( $location['code'], $location['type'] );
        }
    }

    /**
     * Add a shipping method to this zone.
     *
     * @param string $type shipping method type.
     * @return int new instance_id, 0 on failure
     */
    public function add_shipping_method( $type ) {
        if ( null === $this->get_id() ) {
            $this->save();
        }

        $instance_id     = 0;
        $wc_shipping     = WC_Shipping::instance();
        $allowed_classes = $wc_shipping->get_shipping_method_class_names();
        $count           = $this->data_store->get_method_count( $this->get_id() );

        if ( in_array( $type, array_keys( $allowed_classes ), true ) ) {
            $instance_id = $this->data_store->add_method( $this->get_id(), $type, $count + 1 );
        }

        if ( $instance_id ) {
            do_action( 'woocommerce_shipping_zone_method_added', $instance_id, $type, $this->get_id() );
        }

        WC_Cache_Helper::get_transient_version( 'shipping', true );

        return $instance_id;
    }

    /**
     * Delete a shipping method from a zone.
     *
     * @param int $instance_id Shipping method instance ID.
     * @return True on success, false on failure
     */
    public function delete_shipping_method( $instance_id ) {
        if ( null === $this->get_id() ) {
            return false;
        }

        // Get method details.
        $method = $this->data_store->get_method( $instance_id );

        if ( $method ) {
            $this->data_store->delete_method( $instance_id );
            do_action( 'woocommerce_shipping_zone_method_deleted', $instance_id, $method->method_id, $this->get_id() );
        }

        WC_Cache_Helper::get_transient_version( 'shipping', true );

        return true;
    }
}