<?php

declare(strict_types=1);

namespace Lvl0\FediDiscover\Clients;

use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Http;
use Lvl0\FediDiscover\Models\Instance;

class MastodonClient implements FediverseClientInterface
{
    public function fetchPostsSince(Instance $instance, ?string $lastSeenId): Collection
    {
        $url = 'https://' . parse_url($instance->url, PHP_URL_HOST) . '/api/v1/timelines/public';

        $params = $lastSeenId !== null ? ['min_id' => $lastSeenId] : [];

        $response = Http::withHeaders([
            'User-Agent' => config('fedi-discover.http.user_agent'),
        ])->get($url, $params);

        if (! $response->successful() || ! is_array($response->json())) {
            return collect();
        }

        return collect($response->json())
            ->map(fn (array $t) => new FediversePost(
                cursorId: $t['id'],
                selfUrl: $t['url'] ?? $t['uri'],
                body: $t['content']
            ));
    }
}