<?php
/**
 * Assets and settings for the phone fields in the checkout and My account.
 *
 * @package Dialtidy
 */

namespace Dialtidy;

defined( 'ABSPATH' ) || exit;

/**
 * Front end.
 */
class Frontend {

	/** Version of intl-tel-input in assets/vendor. */
	const ITI_VERSION = '29.5.4';

	/**
	 * Hooks.
	 */
	public static function init() {
		add_action( 'wp_enqueue_scripts', array( __CLASS__, 'enqueue' ) );
	}

	/**
	 * Whether this page has a phone field we handle.
	 *
	 * @return bool
	 */
	public static function needed() {
		if ( ! function_exists( 'is_checkout' ) ) {
			return false;
		}
		if ( is_checkout() && ! is_wc_endpoint_url( 'order-received' ) && ! is_wc_endpoint_url( 'order-pay' ) ) {
			return true;
		}
		return function_exists( 'is_account_page' ) && is_account_page() && is_wc_endpoint_url( 'edit-address' );
	}

	/**
	 * Scripts and styles on the checkout and My account pages.
	 */
	public static function enqueue() {
		if ( self::needed() ) {
			self::assets();
		}
	}

	/**
	 * Scripts and styles of the phone field, also for other plugins (front end or admin); window.dialtidy attaches
	 * the field to other inputs. Once per page.
	 *
	 * @param string $place checkout or account; '' to tell from the page.
	 */
	public static function assets( $place = '' ) {
		if ( wp_script_is( 'dialtidy', 'enqueued' ) ) {
			return;
		}
		wp_enqueue_style( 'dialtidy-iti', DIALTIDY_URL . 'assets/vendor/intl-tel-input/css/intlTelInput.min.css', array(), self::ITI_VERSION );
		wp_enqueue_style( 'dialtidy', DIALTIDY_URL . 'assets/css/dialtidy.css', array( 'dialtidy-iti' ), DIALTIDY_VERSION );
		wp_enqueue_script( 'dialtidy-iti', DIALTIDY_URL . 'assets/vendor/intl-tel-input/js/intlTelInputWithUtils.min.js', array(), self::ITI_VERSION, true );
		wp_enqueue_script( 'dialtidy', DIALTIDY_URL . 'assets/js/dialtidy.js', array( 'dialtidy-iti', 'wp-data' ), DIALTIDY_VERSION, true );
		wp_localize_script( 'dialtidy', 'dialtidyConfig', self::config( $place ) );
	}

	/**
	 * Settings for the script.
	 *
	 * @param string $place checkout or account; '' to tell from the page.
	 * @return array<string,mixed>
	 */
	public static function config( $place = '' ) {
		if ( ! in_array( $place, array( 'checkout', 'account' ), true ) ) {
			$place = function_exists( 'is_checkout' ) && is_checkout() ? 'checkout' : 'account';
		}
		$groups = array();
		foreach ( Settings::GROUPS as $group ) {
			$groups[ $group ] = array(
				'only'  => array_map( 'strtolower', Countries::allowed( $group ) ),
				'types' => Checkout::allowed_types( $group, $place ),
			);
		}
		$config = array(
			'mode'            => (string) Settings::get( 'mode' ),
			'ns'              => Checkout::NS,
			'store'           => strtolower( Countries::store() ),
			'popular'         => array_map( 'strtolower', (array) Settings::get( 'popular' ) ),
			'groups'          => $groups,
			'messages'        => array(),
			'names'           => array(),
			'formatAsYouType' => false,
			'i18n'            => array(
				'invalid'     => __( 'Please enter a valid phone number.', 'dialtidy' ),
				'warn'        => __( 'This doesn’t look like a valid phone number. Please check it.', 'dialtidy' ),
				'notAllowed'  => __( 'Phone numbers from this region are not accepted here. Please enter another number.', 'dialtidy' ),
				'close'       => __( 'Close', 'dialtidy' ),
				/* translators: 1: country name, 2: dialing code such as +43. */
				'selected'    => __( 'Change country for phone number, currently selected %1$s (%2$s)', 'dialtidy' ),
				'noCountry'   => __( 'Select country for phone number', 'dialtidy' ),
				'countryList' => __( 'List of countries', 'dialtidy' ),
				'search'      => __( 'Search', 'dialtidy' ),
				'clearSearch' => __( 'Clear search', 'dialtidy' ),
				'noResults'   => __( 'No results found', 'dialtidy' ),
				'oneResult'   => __( '1 result found', 'dialtidy' ),
				/* translators: %d: number of countries found. */
				'results'     => __( '%d results found', 'dialtidy' ),
			),
		);
		return self::extend( $config, $place );
	}

	/**
	 * Adds the values other plugins may set: messages per reason, country names for them, spacing while typing.
	 *
	 * @param array<string,mixed> $config Settings for the script.
	 * @param string              $place  checkout or account.
	 * @return array<string,mixed>
	 */
	private static function extend( array $config, $place ) {
		/**
		 * Phone field settings for the browser. Only these keys are used:
		 * messages (reason => text, %s is the country name), names (lower-case country code => name), formatAsYouType (bool).
		 *
		 * @param array<string,mixed> $extra Values.
		 * @param string              $place checkout or account.
		 */
		$extra = apply_filters(
			'dialtidy_script_config',
			array(
				'messages'        => array(),
				'names'           => array(),
				'formatAsYouType' => false,
			),
			$place
		);
		if ( ! is_array( $extra ) ) {
			return $config;
		}
		if ( isset( $extra['messages'] ) && is_array( $extra['messages'] ) ) {
			foreach ( Phone::REASONS as $reason ) {
				if ( isset( $extra['messages'][ $reason ] ) && is_string( $extra['messages'][ $reason ] ) && '' !== trim( wp_strip_all_tags( $extra['messages'][ $reason ] ) ) ) {
					$config['messages'][ $reason ] = trim( wp_strip_all_tags( $extra['messages'][ $reason ] ) );
				}
			}
		}
		if ( isset( $extra['names'] ) && is_array( $extra['names'] ) ) {
			foreach ( $extra['names'] as $code => $name ) {
				if ( is_string( $code ) && preg_match( '/^[a-z]{2}$/', $code ) && is_string( $name ) && '' !== trim( $name ) ) {
					$config['names'][ $code ] = html_entity_decode( wp_strip_all_tags( $name ), ENT_QUOTES, 'UTF-8' );
				}
			}
		}
		$config['formatAsYouType'] = isset( $extra['formatAsYouType'] ) && true === $extra['formatAsYouType'];
		return $config;
	}
}