File functions/agenda.php

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<?php
/*
 * (c)2018 SIW Internationale Vrijwilligersprojecten
 */

use SIW\Formatting;

/**
 * Geeft array met gegevens van toekomstige evenementen terug
 *
 * @param  int $number
 * @param  string $min_date
 * @param  string $max_date
 *
 * @return array
 */
function siw_get_upcoming_events( $number, $min_date = '', $max_date = '' ) {

    if ( empty( $min_date ) ) {
        $min_date = strtotime( date( 'Y-m-d' ) );
    }

    $meta_query_args = [
        'relation' => 'AND',
        [
            'key'     => 'siw_agenda_eind',
            'value'   => $min_date,
            'compare' => '>='
        ],

    ];
    if ( ! empty( $max_date ) ) {
        $meta_query_args[] = [
            'key'     => 'siw_agenda_start',
            'value'   => $max_date,
            'compare' => '<='
        ];
    }

    $query_args = [
        'post_type'           => 'agenda',
        'posts_per_page'      => $number,
        'post_status'         => 'publish',
        'ignore_sticky_posts' => true,
        'meta_key'            => 'siw_agenda_start',
        'orderby'             => 'meta_value_num',
        'order'               => 'ASC',
        'meta_query'          => $meta_query_args,
        'fields'              => 'ids'
    ];

    $events_ids = get_posts( $query_args );

    $upcoming_events = [];
    foreach ( $events_ids as $event_id ) {
        $upcoming_events[] = siw_get_event_data( $event_id );
    }

    return $upcoming_events;
}

/* TODO: verwijderen oude evenmenten */



/**
 * Haal gegevens van agenda-evenement op
 *
 * @param int $post_id
 *
 * @return array
 */
function siw_get_event_data( $post_id ) {

    $start_ts   = get_post_meta( $post_id, 'siw_agenda_start', true );
    $end_ts     = get_post_meta( $post_id, 'siw_agenda_eind', true );

    $event_data = [
        'permalink'               => get_permalink( $post_id ),
        'title'                   => get_the_title( $post_id ),
        'excerpt'                 => get_the_excerpt( $post_id ),
        'post_thumbnail_url'      => get_the_post_thumbnail_url( $post_id ), //TODO: is dit nog nodig?
        'start_date'              => date( 'Y-m-d', $start_ts ),
        'end_date'                => date( 'Y-m-d', $end_ts ),
        'start_time'              => date( 'H:i', $start_ts ),
        'end_time'                => date( 'H:i', $end_ts ),
        'program'                 => get_post_meta( $post_id, 'siw_agenda_programma', true ),
        'description'             => get_post_meta( $post_id, 'siw_agenda_beschrijving', true ),
        'highlight_quote'         => get_post_meta( $post_id, 'siw_agenda_highlight_quote', true ),
        'location'                => get_post_meta( $post_id, 'siw_agenda_locatie', true ),
        'address'                 => get_post_meta( $post_id, 'siw_agenda_adres', true ),
        'postal_code'             => get_post_meta( $post_id, 'siw_agenda_postcode', true ),
        'city'                    => get_post_meta( $post_id, 'siw_agenda_plaats', true ),
        'application'             => get_post_meta( $post_id, 'siw_agenda_aanmelden', true ),
        'application_explanation' => get_post_meta( $post_id, 'siw_agenda_aanmelden_toelichting', true ),
        'application_link_url'    => get_post_meta( $post_id, 'siw_agenda_aanmelden_link_url', true ),
        'application_link_text'   => get_post_meta( $post_id, 'siw_agenda_aanmelden_link_tekst', true ),
        'text_after_hide_form'    => get_post_meta( $post_id, 'siw_agenda_tekst_na_verbergen_formulier', true ),
    ];
    $event_data['date_range'] = Formatting::format_date_range( $event_data['start_date'], $event_data['end_date'] , false );
    $event_data['duration'] = sprintf( '%s, %s&nbsp;-&nbsp;%s', $event_data['date_range'], $event_data['start_time'], $event_data['end_time'] );

    $event_data['json_ld'] = siw_generate_event_json_ld( $event_data );


    return $event_data;
}


/**
 * Genereer structured data voor evenement
 *
 * @param array $event
 * @return string
 */
function siw_generate_event_json_ld( $event ) {

    //TODO: standaard afbeelding voor infodag -> setting

    $data = [
        '@context'      => 'http://schema.org',
        '@type'         => 'event',
        'name'          => esc_attr( $event['title'] ),
        'description'   => esc_attr( $event['excerpt'] ),
        'image'         => esc_url( $event['post_thumbnail_url'] ),
        'startDate'     => esc_attr( $event['start_date'] ),
        'endDate'       => esc_attr( $event['end_date'] ),
        'url'           => esc_url( $event['permalink'] ),
        'location'      => [
            '@type'     => 'Place',
            'name'      => esc_attr( $event['location'] ),
            'address'   => esc_attr( sprintf('%s, %s %s', $event['address'], $event['postal_code'], $event['city'] ) ),
        ],
    ];
    return Formatting::generate_json_ld( $data );
}

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