php [会员资格] - 滴滴涕会员倒计时

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<?php
/*
Plugin Name: [Membership] - Dripped memberships countdown
Plugin URI: https://premium.wpmudev.org/
Description: Adds a countdown for dripped memberships
Author: Panos Lyrakis @ WPMUDEV
Author URI: https://premium.wpmudev.org/
License: GPLv2 or later
*/

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

if ( ! class_exists( 'MS_Dripped_Countdown' ) ) {

    class MS_Dripped_Countdown
    {

        private static $_instance = null;

        public static function get_instance()
        {

            if (is_null(self::$_instance)) {
                self::$_instance = new MS_Dripped_Countdown();
            }
            return self::$_instance;

        }

        private function __construct()
        {
            add_filter( 'query_vars', array( $this, 'query_vars' ), 10 );
            add_filter( 'ms_model_settings_get_protection_message', array( $this, 'inject_countdown' ), 10, 3 );
            add_action( 'wp_head', array( $this, 'countdown_style' ), 10 );
        }

        public function query_vars( $query_vars ){
            $query_vars[] = 'redirect_to';
            return $query_vars;
        }

        public function inject_countdown( $msg, $type, $MS_Settings_Model ){

            $page_url = get_query_var( 'redirect_to' );
            if( $post_id = url_to_postid( $page_url ) ){

                $All_Memberships = MS_Model_Membership::get_memberships();
                foreach ( $All_Memberships as $membership ) {
                    if( $membership->is_dripped() ){

                        foreach ( $membership->rule_values as $post_type => $protected_items_array ) {
                            foreach( $protected_items_array as $protected_items ){
                                if( in_array( $post_id, $protected_items ) ){

                                    $MS_Rule = new MS_Rule( $membership->id );
                                    $avail_date = $MS_Rule->get_dripped_avail_date( $post_id ) . ' 00:00:00';
                                    //$avail_date = strtotime( $avail_date );
                                    $msg = self::show_countdown( $avail_date );

                                }
                            }
                        }
                    }
                }

            }


            return $msg;

        }

        public static function show_countdown( $avail_date ){

            ob_start();
            ?>

            <h1><?php _e( 'Content will be available in:' ) ?></h1>
            <div id="wpmudev-countdown-wrap">
                <div>
                    <span class="days"></span>
                    <div class="smalltext">Days</div>
                </div>
                <div>
                    <span class="hours"></span>
                    <div class="smalltext">Hours</div>
                </div>
                <div>
                    <span class="minutes"></span>
                    <div class="smalltext">Minutes</div>
                </div>
                <div>
                    <span class="seconds"></span>
                    <div class="smalltext">Seconds</div>
                </div>
            </div>

            <script type="text/javascript">
                (function($){
                    $(document).ready(function(){
                        function getTimeRemaining(endtime) {
                            var t = Date.parse(endtime) - Date.parse(new Date());
                            var seconds = Math.floor((t / 1000) % 60);
                            var minutes = Math.floor((t / 1000 / 60) % 60);
                            var hours = Math.floor((t / (1000 * 60 * 60)) % 24);
                            var days = Math.floor(t / (1000 * 60 * 60 * 24));
                            return {
                                'total': t,
                                'days': days,
                                'hours': hours,
                                'minutes': minutes,
                                'seconds': seconds
                            };
                        }

                        function initializeClock(id, endtime) {
                            var clock = document.getElementById(id);
                            var daysSpan = clock.querySelector('.days');
                            var hoursSpan = clock.querySelector('.hours');
                            var minutesSpan = clock.querySelector('.minutes');
                            var secondsSpan = clock.querySelector('.seconds');

                            function updateClock() {
                                var t = getTimeRemaining(endtime);

                                daysSpan.innerHTML = t.days;
                                hoursSpan.innerHTML = ('0' + t.hours).slice(-2);
                                minutesSpan.innerHTML = ('0' + t.minutes).slice(-2);
                                secondsSpan.innerHTML = ('0' + t.seconds).slice(-2);

                                if (t.total <= 0) {
                                    clearInterval(timeinterval);
                                }
                            }

                            updateClock();
                            var timeinterval = setInterval(updateClock, 1000);
                        }

                        var deadline = new Date( Date.parse('<?php echo $avail_date; ?>' ) + 1 * 24 * 60 * 60 * 1000 );
                        initializeClock('wpmudev-countdown-wrap', deadline);
                    });
                })(jQuery);
            </script>
            <?php

            return ob_get_clean();
        }

        public function countdown_style(){

            global $post;

            //if( ! $post instanceof WP_Post || ! MS_Model_Pages::is_membership_page( $post->ID, MS_Model_Pages::MS_PAGE_PROTECTED_CONTENT ) ){
            if( ! $post instanceof WP_Post || MS_Model_Pages::get_page_type( $post->ID ) != MS_Model_Pages::MS_PAGE_PROTECTED_CONTENT ){
                return;
            }

            ?>
            <style type="text/css">
                #wpmudev-countdown-wrap{
                    font-family: sans-serif;
                    color: #fff;
                    display: inline-block;
                    font-weight: 100;
                    text-align: center;
                    font-size: 30px;
                }
    
                #wpmudev-countdown-wrap > div{
                    padding: 10px;
                    border-radius: 3px;
                    background: #219cd8;
                    display: inline-block;
                    }
    
                #wpmudev-countdown-wrap div > span{
                    padding: 15px;
                    border-radius: 3px;
                    background: #5eb1e1;
                    display: inline-block;
                }

                #wpmudev-countdown-wrap .smalltext{
                    padding-top: 5px;
                    font-size: 16px;
                }

            </style>
            <?php
        }

    }

    add_action( 'plugins_loaded', function(){
        $GLOBALS['MS_Dripped_Countdown'] = MS_Dripped_Countdown::get_instance();
    }, 10 );
}

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