<?php

declare(strict_types=1);

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

function pcwp_get_event(int $event_id): ?ProCalendarWP\Events\EventData
{
    return ProCalendarWP\Plugin::instance()->events()->find($event_id);
}

/** @return list<ProCalendarWP\Events\OccurrenceData> */
function pcwp_get_occurrences(array $query = []): array
{
    return ProCalendarWP\Plugin::instance()->events()->occurrences($query);
}

function pcwp_get_event_start(int $event_id, string $format = ''): string
{
    $event = pcwp_get_event($event_id);
    if ($event === null) {
        return '';
    }
    return $event->startLocal->format($format !== '' ? $format : get_option('date_format') . ' ' . get_option('time_format'));
}

function pcwp_get_event_end(int $event_id, string $format = ''): string
{
    $event = pcwp_get_event($event_id);
    if ($event === null) {
        return '';
    }
    return $event->endLocal->format($format !== '' ? $format : get_option('date_format') . ' ' . get_option('time_format'));
}

function pcwp_is_all_day(int $event_id): bool
{
    return pcwp_get_event($event_id)?->allDay ?? false;
}

function pcwp_get_event_link(int $event_id): string
{
    return (string) get_permalink($event_id);
}

/** @return list<ProCalendarWP\Events\EventData> */
function pcwp_get_related_events(int $event_id, int $limit = 3): array
{
    $category_ids = wp_get_post_terms($event_id, 'pcwp_event_category', ['fields' => 'ids']);
    if (is_wp_error($category_ids) || $category_ids === []) {
        return [];
    }
    $ids = get_posts([
        'post_type' => 'pcwp_event',
        'post_status' => 'publish',
        'post__not_in' => [$event_id],
        'posts_per_page' => max(1, min(20, $limit)),
        'fields' => 'ids',
        'tax_query' => [[
            'taxonomy' => 'pcwp_event_category',
            'field' => 'term_id',
            'terms' => $category_ids,
        ]],
    ]);
    return array_values(array_filter(array_map(static fn (int $id) => pcwp_get_event($id), $ids)));
}