<?php
defined( 'ABSPATH' ) || exit;

/**
 * "Vendor shipping" method. Add it to a WooCommerce shipping zone; it only returns a rate
 * for packages that belong to a vendor with a configured rate table.
 */
class FRONTGLUT_Vendor_Shipping extends WC_Shipping_Method {

	public function __construct( $instance_id = 0 ) {
		$this->id                 = 'frontglut_vendor_shipping';
		$this->instance_id        = absint( $instance_id );
		$this->method_title       = __( 'Vendor shipping', 'frontglut' );
		$this->method_description = __( 'Each vendor sets their own rates (Dashboard → My store → Shipping).', 'frontglut' );
		$this->supports           = array( 'shipping-zones', 'instance-settings' );
		$this->instance_form_fields = array(
			'title' => array( 'title' => __( 'Title', 'frontglut' ), 'type' => 'text', 'default' => __( 'Vendor shipping', 'frontglut' ) ),
		);
		$this->title = $this->get_option( 'title', __( 'Vendor shipping', 'frontglut' ) );
	}

	public function calculate_shipping( $package = array() ) {
		$vid = isset( $package['frontglut_vendor'] ) ? (int) $package['frontglut_vendor'] : 0;
		if ( ! $vid ) {
			return;
		}
		$st      = \FrontGlut\Modules\Vendors\Vendors::store( $vid );
		$country = isset( $package['destination']['country'] ) ? strtoupper( $package['destination']['country'] ) : '';
		$cost    = null;
		foreach ( preg_split( '/\r\n|\r|\n/', (string) $st['ship_rates'] ) as $line ) {
			$p = array_map( 'trim', explode( '|', $line, 2 ) );
			if ( 2 === count( $p ) && is_numeric( $p[1] ) ) {
				if ( strtoupper( $p[0] ) === $country ) {
					$cost = (float) $p[1];
					break;
				}
				if ( '*' === $p[0] && null === $cost ) {
					$cost = (float) $p[1];
				}
			}
		}
		if ( null === $cost && '' !== (string) $st['ship_default'] ) {
			$cost = (float) $st['ship_default'];
		}
		if ( null === $cost ) {
			return;
		}
		/* translators: %s: value. */
		$label = sprintf( __( 'Shipping from %s', 'frontglut' ), $st['name'] ?: __( 'vendor', 'frontglut' ) ) . ( $st['ship_time'] ? ' (' . $st['ship_time'] . ')' : '' );
		$this->add_rate( array( 'id' => $this->get_rate_id(), 'label' => $label, 'cost' => $cost, 'package' => $package ) );
	}
}