<?php

use App\Build\SiteParser;
use Illuminate\Support\Collection;

// TODO: Have to make site parser a singleton
/**
 * Get the pages belonging to a collection. If props
 * are passed, also filter by those.
 * 
 * Example:
 * $collection = projects.[project_name].docs
 * $props = ['project_name' => 'myproject']
 *
 * @param string $collection
 * @param array $props
 * @param bool $loose
 * @return Collection<\App\Models\Page>
 */
function collectionPages(string $collection, array $props = [], bool $loose = false): Collection
{
    $pages = (new SiteParser)->getPages();
    if ($loose) {
        $pages = $pages->filter(fn($p) => in_array($collection, $p->collectionHierarchy));
    } else {
        $pages = $pages->where('collection', $collection);
    }

    foreach ($props as $k => $v) {
        $pages = $pages->filter(fn($p) => $p->collectionProps[$k] == $v);
    }

    return $pages;
}