<?php

/**
 * The public-facing functionality of the plugin.
 *
 * @link       https://profiles.wordpress.org/rakibuldev/
 * @since      1.0.0
 *
 * @package    Age_Sentry
 * @subpackage Age_Sentry/public
 */

/**
 * The public-facing functionality of the plugin.
 *
 * Defines the plugin name, version, and the hooks that render the age
 * verification popup and enqueue the assets it depends on.
 *
 * @package    Age_Sentry
 * @subpackage Age_Sentry/public
 * @author     MD. Rakibul Islam <mtsrakibul@gmail.com>
 */
class Age_Sentry_Public {

	/**
	 * The ID of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $plugin_name    The ID of this plugin.
	 */
	private $plugin_name;

	/**
	 * The version of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $version    The current version of this plugin.
	 */
	private $version;

	/**
	 * Initialize the class and set its properties.
	 *
	 * @since    1.0.0
	 * @param      string    $plugin_name       The name of the plugin.
	 * @param      string    $version    The version of this plugin.
	 */
	public function __construct( $plugin_name, $version ) {

		$this->plugin_name = $plugin_name;
		$this->version     = $version;

	}

	/**
	 * Register the stylesheets for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_styles() {

		wp_enqueue_style( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'css/age-sentry-public.css', array(), $this->version, 'all' );
		wp_enqueue_style( 'flatpickr', plugin_dir_url( __FILE__ ) . 'lib/flatpickr/flatpickr.min.css', array(), $this->version, 'all' );
		wp_enqueue_style( 'flatpickr-theme-dark', plugin_dir_url( __FILE__ ) . 'lib/flatpickr/themes/dark.css', array( 'flatpickr' ), $this->version, 'all' );

		$bg_color      = sanitize_hex_color( get_option( 'age_sentry_color_popup_bg', '#1a1b20' ) );
		$primary_color = sanitize_hex_color( get_option( 'age_sentry_color_primary', '#10b981' ) );
		$text_color    = sanitize_hex_color( get_option( 'age_sentry_color_text', '#ffffff' ) );
		$muted_color   = sanitize_hex_color( get_option( 'age_sentry_color_text_muted', '#9ca3af' ) );

		$custom_css = "
			:root {
				--age_sentry-bg-popup: {$bg_color};
				--age_sentry-primary: {$primary_color};
				--age_sentry-text-main: {$text_color};
				--age_sentry-text-muted: {$muted_color};
			}
		";
		wp_add_inline_style( $this->plugin_name, $custom_css );

	}

	/**
	 * Register the JavaScript for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_scripts() {

		wp_enqueue_script( 'flatpickr', plugin_dir_url( __FILE__ ) . 'lib/flatpickr/flatpickr.min.js', array( 'jquery' ), $this->version, true );
		wp_enqueue_script( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'js/age-sentry-public.js', array( 'jquery', 'flatpickr' ), $this->version, true );

		$min_age = absint( get_option( 'age_sentry_min_age', 18 ) );

		wp_localize_script(
			$this->plugin_name,
			'age_sentryData',
			array(
				'cookieDuration'  => absint( get_option( 'age_sentry_cookie_duration', 30 ) ),
				'redirectUrl'     => esc_url( get_option( 'age_sentry_redirect_url', 'https://google.com' ) ),
				'minAge'          => $min_age,
				'errorSelectDate' => __( 'Please select your date of birth.', 'age-sentry' ),
				/* translators: %d: Minimum age requirement */
				'errorUnderage'   => sprintf( __( 'You must be %d or older to enter.', 'age-sentry' ), $min_age ),
			)
		);

	}

	/**
	 * Determine whether the current visitor is a known search engine crawler.
	 *
	 * Used to keep the age gate from blocking indexing, since a popup that
	 * hides the page content from crawlers can hurt SEO.
	 *
	 * @since    1.0.0
	 * @return   bool    True if the user agent matches a known crawler.
	 */
	private function is_crawler() {

		$crawlers   = 'Googlebot|Bingbot|Slurp|DuckDuckBot|Baiduspider|YandexBot|Sogou|Exabot|facebot|facebookexternalhit|twitterbot';
		$user_agent = isset( $_SERVER['HTTP_USER_AGENT'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) ) : '';

		return (bool) preg_match( '/(' . $crawlers . ')/i', $user_agent );

	}

	/**
	 * Output the age verification popup markup in the site footer.
	 *
	 * Skips rendering entirely when the visitor already carries the
	 * "age_verified" cookie, is a logged-in user and bypass is enabled, or
	 * is a search engine crawler and crawler bypass is enabled.
	 *
	 * @since    1.0.0
	 */
	public function render_popup() {

		if ( isset( $_COOKIE['age_verified'] ) && 'yes' === $_COOKIE['age_verified'] ) {
			return;
		}

		if ( get_option( 'age_sentry_bypass_logged_in', '1' ) && is_user_logged_in() ) {
			return;
		}

		if ( get_option( 'age_sentry_bypass_crawlers', '1' ) && $this->is_crawler() ) {
			return;
		}

		require plugin_dir_path( __FILE__ ) . 'partials/age-sentry-public-display.php';

	}

}