<?php

declare(strict_types=1);

namespace App\Support;

use App\Enums\Media\Source;
use Illuminate\Validation\Rule;

/**
 * Single source of truth for inline post `media` validation, shared by the post
 * create/update flows. The web sends already-hosted media (id + path) and tracks
 * its source; the public REST API may send a bare external `url` we download and
 * host, so the id/path/url rules differ by contract.
 */
class PostMediaRules
{
    /**
     * @param  bool  $hosted  true (web): items must already be hosted (id + path
     *                        required); false (API): a bare external `url` is
     *                        accepted (and downloaded).
     * @return array<string, mixed>
     */
    public static function rules(bool $hosted): array
    {
        return [
            'media' => ['sometimes', 'array'],
            'media.*.id' => $hosted ? ['required', 'string'] : ['sometimes', 'nullable', 'string'],
            'media.*.path' => $hosted ? ['required', 'string', 'max:500'] : ['sometimes', 'nullable', 'string', 'max:500'],
            'media.*.url' => $hosted
                ? ['required', 'string', 'max:2048']
                : ['required', 'string', 'max:2048', 'url:http,https'],
            'media.*.type' => ['sometimes', 'nullable', 'string', 'max:32'],
            'media.*.mime_type' => ['sometimes', 'nullable', 'string', 'max:255'],
            'media.*.original_filename' => ['sometimes', 'nullable', 'string', 'max:500'],
            'media.*.size' => ['sometimes', 'nullable', 'integer'],
            'media.*.meta' => ['sometimes', 'nullable', 'array'],
            'media.*.source' => ['sometimes', 'nullable', 'string', Rule::in(array_column(Source::cases(), 'value'))],
            'media.*.source_meta' => ['sometimes', 'nullable', 'array'],
        ];
    }
}