radio-wombat-toolkit/admin/add_broadcast_page.php

<?php

function create_broadcast_post()
{
    register_post_type(
        'broadcast',
        array(
            'labels'       => array(
                'name'       => __('Trasmissioni'),
                'add_new'    => __('Aggiungi Trasmissione'),
                'new_item'   => __('Nuova Trasmissione')
            ),
            'public'       => true,
            'hierarchical' => false,
            'exclude_from_search' => true,
            'show_ui' => true,
	    'show_in_menu' => true,
	    'show_in_rest' => true,
            'menu_position' => 3,
            'has_archive'  => false,
            'supports'     => array(
                'title',
                'editor',
                'excerpt',
                'thumbnail',
                'post-formats'
            ),
            'menu_icon'    => 'dashicons-microphone',
        )
    );
}
add_action('init', 'create_broadcast_post');
add_action('add_meta_boxes', 'live_meta_box_add');

function live_meta_box_add()
{
    //give name of your input field
    add_meta_box('orari-dirette', 'ORARI DELLA DIRETTA', 'orari_dirette_input', 'broadcast', 'normal', 'high');
    add_meta_box('orari-repliche', 'ORARI DELLE REPLICHE', 'orari_repliche_input', 'broadcast', 'normal', 'high');
}

function orari_dirette_input($post)
{
    $values = get_post_custom($post->ID);
    $onair_cadence = $onair_startdate = $onair_start = $onair_end = array();
    wp_nonce_field('on_air_nonce', 'onair_nonce');
    $broadcast = term_exists('Podcast', 'category', 0);
    $old_term = term_exists($post->post_title, 'category', $broadcast);
 ?>
	 <input type="hidden" name="taxonomy_id" value="<?php echo $old_term['term_id'] ?>" />
<?php
    for ($x=0;$x<7;$x++) :
        $onair_day = isset($values['on_air_day_'.$x]) ? esc_attr($values['on_air_day_'.$x][0]) : '';
        $onair_cadence = isset($values['on_air_cadence_'.$x]) ? esc_attr($values['on_air_cadence_'.$x][0]) : '';
        $onair_startdate = isset($values['on_air_startdate_'.$x]) ? esc_attr($values['on_air_startdate_'.$x][0]) : '';
        $onair_start = isset($values['on_air_start_'.$x]) ? esc_attr($values['on_air_start_'.$x][0]) : '';
        $onair_end = isset($values['on_air_end_'.$x]) ? esc_attr($values['on_air_end_'.$x][0]) : '';
?>       
        <div style='width:100%;float:left;'>
            <h3>Diretta n. <?php echo $x+1; ?></h3>
        </div>
        <div style='width:20%;float:left;'>
            <select name="on_air_day_<?php echo $x; ?>" id="on_air_day_<?php echo $x; ?>">
                <option <?php echo ($onair_day=='') ? 'selected' : ''; ?> value="">Seleziona un giorno</option>
                <option <?php echo ($onair_day==1) ? 'selected' : ''; ?> value="1">Luned&igrave;</option>
                <option <?php echo ($onair_day==2) ? 'selected' : ''; ?> value="2">Marted&igrave;</option>
                <option <?php echo ($onair_day==3) ? 'selected' : ''; ?> value="3">Mercoled&igrave;</option>
                <option <?php echo ($onair_day==4) ? 'selected' : ''; ?> value="4">Gioved&igrave;</option>
                <option <?php echo ($onair_day==5) ? 'selected' : ''; ?> value="5">Venerd&igrave;</option>
                <option <?php echo ($onair_day==6) ? 'selected' : ''; ?> value="6">Sabato</option>
                <option <?php echo ($onair_day==7) ? 'selected' : ''; ?> value="7">Domenica</option>
            </select>
        </div>
        <div style='width:20%;float:left;'>
            <label for="onair_startdate_<?php echo $x; ?>">Data inizio</label>
            <input type="date" name="on_air_startdate_<?php echo $x; ?>" id="on_air_startdate_<?php echo $x; ?>" value="<?php echo $onair_startdate; ?>" style="width: 40%;" />
        </div>
        <div style='width:20%;float:left;'>
            <select name="on_air_cadence_<?php echo $x; ?>" id="on_air_cadence_<?php echo $x; ?>">
            <label for="on_air_cadence_<?php echo $x; ?>">Cadenza</label>
                <option <?php echo ($onair_cadence==1) ? 'selected' : ''; ?> value="1">Una volta a settimana</option>
                <option <?php echo ($onair_cadence==2) ? 'selected' : ''; ?> value="2">Una volta ogni 2 settimane</option>
                <option <?php echo ($onair_cadence==3) ? 'selected' : ''; ?> value="3" hidden>Una volta ogni 3 settimane</option>
                <option <?php echo ($onair_cadence==4) ? 'selected' : ''; ?> value="4">Una volta ogni 4 settimane</option>
                <option <?php echo ($onair_cadence==5) ? 'selected' : ''; ?> value="5">Una volta al mese</option>
            </select>
        </div>
        <div style='width:20%;float:left;'>
            <label for="on_air_start_<?php echo $x; ?>">Ora inizio</label>
            <input type="time" name="on_air_start_<?php echo $x; ?>" id="on_air_start_<?php echo $x; ?>" value="<?php echo $onair_start; ?>" style="width: 40%;" />
        </div>
        <div style='width:20%;float:left;'>
            <label for="on_air_end_<?php echo $x; ?>">Ora fine</label>
            <input type="time" name="on_air_end_<?php echo $x; ?>" id="on_air_end_<?php echo $x; ?>" value="<?php echo $onair_end; ?>" style="width: 40%;" />
        </div>
        <div style="clear:both;"></div>
<?php
    endfor;
    wp_enqueue_script('add_onchange_listener', plugin_dir_url(__FILE__).'js/add_onchange_listener.js', array(), '1.2', true);

}

function orari_repliche_input($post)
{
    $values = get_post_custom($post->ID);
    $rerun_day = $rerun_cadence = $rerun_startdate = $rerun_start = $rerun_end = array();
    wp_nonce_field('rerun_nonce', 're_run_nonce');
    for ($x=0;$x<7;$x++) :
        $rerun_day = isset($values['rerun_day_'.$x]) ? esc_attr($values['rerun_day_'.$x][0]) : '';
        $rerun_start = isset($values['rerun_start_'.$x]) ? esc_attr($values['rerun_start_'.$x][0]) : '';
        $rerun_end = isset($values['rerun_end_'.$x]) ? esc_attr($values['rerun_end_'.$x][0]) : ''; 
        $rerun_cadence = isset($values['rerun_cadence_'.$x]) ? esc_attr($values['rerun_cadence_'.$x][0]) : '';
        $rerun_startdate = isset($values['rerun_startdate_'.$x]) ? esc_attr($values['rerun_startdate_'.$x][0]) : '';
?>
        <div style='width:100%;float:left;'>
            <h3>Replica n. <?php echo $x+1; ?></h3>
        </div>
        <div style='width:20%;float:left;'>
          <select name="rerun_day_<?php echo $x; ?>" id="rerun_day_<?php echo $x; ?>">
              <option <?php echo ($rerun_day=='') ? 'selected' : ''; ?> value="">Seleziona un giorno</option>
              <option <?php echo ($rerun_day==1) ? 'selected' : ''; ?> value="1">Luned&igrave;</option>
              <option <?php echo ($rerun_day==2) ? 'selected' : ''; ?> value="2">Marted&igrave;</option>
              <option <?php echo ($rerun_day==3) ? 'selected' : ''; ?> value="3">Mercoled&igrave;</option>
              <option <?php echo ($rerun_day==4) ? 'selected' : ''; ?> value="4">Gioved&igrave;</option>
              <option <?php echo ($rerun_day==5) ? 'selected' : ''; ?> value="5">Venerd&igrave;</option>
              <option <?php echo ($rerun_day==6) ? 'selected' : ''; ?> value="6">Sabato</option>
              <option <?php echo ($rerun_day==7) ? 'selected' : ''; ?> value="7">Domenica</option>
          </select>
        </div>
        <div style='width:20%;float:left;'>
            <label for="rerun_startdate_<?php echo $x; ?>">Data inizio</label>
            <input type="date" name="rerun_startdate_<?php echo $x; ?>" id="rerun_startdate_<?php echo $x; ?>" value="<?php echo $rerun_startdate; ?>" style="width: 40%;" />
        </div>
        <div style='width:20%;float:left;'>
            <select name="rerun_cadence_<?php echo $x; ?>" id="rerun_cadence_<?php echo $x; ?>">
            <label for="rerun_cadence_<?php echo $x; ?>">Cadenza</label>
                <option <?php echo ($rerun_cadence==1) ? 'selected' : ''; ?> value="1">Una volta a settimana</option>
                <option <?php echo ($rerun_cadence==2) ? 'selected' : ''; ?> value="2">Una volta ogni 2 settimane</option>
                <option <?php echo ($rerun_cadence==3) ? 'selected' : ''; ?> value="3" hidden>Una volta ogni 3 settimane</option>
                <option <?php echo ($rerun_cadence==4) ? 'selected' : ''; ?> value="4">Una volta ogni 4 settimane</option>
                <option <?php echo ($rerun_cadence==5) ? 'selected' : ''; ?> value="3">Una volta al mese</option>

            </select>
        </div>
        <div style='width:20%;float:left;'>
            <label for="rerun_start_<?php echo $x; ?>">Ora inizio</label>
            <input type="time" name="rerun_start_<?php echo $x; ?>" id="rerun_start_<?php echo $x; ?>" value="<?php echo $rerun_start; ?>" style="width: 40%;" />
        </div>
        <div style='width:20%;float:left;'>
            <label for="rerun_end_<?php echo $x; ?>">Ora fine</label>
            <input type="time" name="rerun_end_<?php echo $x; ?>" id="rerun_end_<?php echo $x; ?>" value="<?php echo $rerun_end; ?>" style="width: 40%;" />
        </div>
        <div style="clear:both;"></div>
<?php
    endfor;
}

add_action('save_post', 'orari_dirette_save');
function orari_dirette_save($post_id)
{
    // Bail if we're doing an auto save
    if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
        return;
    }
    // if our nonce isn't there, or we can't verify it, bail
    if (!isset($_POST['onair_nonce']) || !wp_verify_nonce($_POST['onair_nonce'], 'on_air_nonce')) {
        return;
    }

    if (!isset($_POST['re_run_nonce']) || !wp_verify_nonce($_POST['re_run_nonce'], 'rerun_nonce')) {
        return;
    }
    // if our current user can't edit this post, bail
    if (!current_user_can('edit_post', $post_id)) {
        return;
    }
    
    // now we can actually save the data
    $allowed = array(
        'a' => array( // on allow a tags
            'href' => array() // and those anchords can only have href attribute
        )
    );
    if (isset($_POST['on_air_start_0'])) {
        $broadcast = term_exists('Podcast', 'category', 0);
        $check = term_exists(intval($_POST['taxonomy_id']), 'category', $broadcast['term_id']);
        if (intval($check['term_id']) > 0) {
            $args = array(
                'cat_ID' => intval($check['term_id']),
                'taxonomy' => 'category',
                'cat_name' => $_POST['post_title'],
                'category_description' => '',
                'category_nicename' => $_POST['post_name'],
                'category_parent' => $broadcast['term_id']
            );
            $test = wp_insert_category($args);
        } else {
            $args = array(
                'parent' => $broadcast['term_id'],
                'slug' => strtolower(wp_specialchars(str_replace(" ", "-", $_POST['post_title']))),
            );
            wp_insert_term($_POST['post_title'], 'category', $args);
        }
        update_post_meta($post_id, 'taxonomy_id', wp_kses($_POST['taxonomy_id'], $allowed));
        
        for ($x=0;$x<7;$x++) {
            $onair_day_data = wp_kses($_POST['on_air_day_'.$x], $allowed);
            $rerun_day_data = wp_kses($_POST['rerun_day_'.$x], $allowed);
            $onair_startdate_data = wp_kses($_POST['on_air_startdate_'.$x], $allowed);
            $rerun_startdate_data = wp_kses($_POST['rerun_startdate_'.$x], $allowed);

            if (!empty($onair_day_data) && !empty($onair_startdate_data)) {
                check_and_correct_startdate_flag($onair_startdate_data, $onair_day_data);
            } 
            if (!empty($rerun_day_data) && !empty($rerun_startdate_data)) {
                check_and_correct_startdate_flag($rerun_startdate_data, $rerun_day_data);
            }  
            update_post_meta($post_id, 'on_air_day_'.$x, $onair_day_data);
            update_post_meta($post_id, 'on_air_start_'.$x, wp_kses($_POST['on_air_start_'.$x], $allowed));
            update_post_meta($post_id, 'on_air_end_'.$x, wp_kses($_POST['on_air_end_'.$x], $allowed));
            update_post_meta($post_id, 'on_air_cadence_'.$x, wp_kses($_POST['on_air_cadence_'.$x], $allowed));
            update_post_meta($post_id, 'rerun_day_'.$x, $rerun_day_data);
            update_post_meta($post_id, 'rerun_start_'.$x, wp_kses($_POST['rerun_start_'.$x], $allowed));
            update_post_meta($post_id, 'rerun_end_'.$x, wp_kses($_POST['rerun_end_'.$x], $allowed));
            update_post_meta($post_id, 'rerun_cadence_'.$x, wp_kses($_POST['rerun_cadence_'.$x], $allowed));
            update_post_meta($post_id, 'on_air_startdate_'.$x, $onair_startdate_data);
            update_post_meta($post_id, 'rerun_startdate_'.$x, $rerun_startdate_data);
        }
    }
}

function check_and_correct_startdate_flag(&$startdate_ptr, $day) {
    $startdate_dt = new DateTime($startdate_ptr);
    $weekday_number = $startdate_dt->format("N");
    if ($day != $weekday_number) {
        $day_diff = $day - $weekday_number;
        $startdate_dt->modify($day_diff." days");
        $startdate_ptr = $startdate_dt->format("Y-m-d");
    };         
}