<?php

namespace App\Modules\Lemmy\Services;

use App\Modules\Lemmy\LemmyRequest;
use Exception;

class LemmyApiService
{
    private string $instance;

    public function __construct(string $instance)
    {
        $this->instance = $instance;
    }

    public function login(string $username, string $password): ?string
    {
        try {
            $request = new LemmyRequest($this->instance);
            $response = $request->post('user/login', [
                'username_or_email' => $username,
                'password' => $password,
            ]);

            if (!$response->successful()) {
                logger()->error('Lemmy login failed', [
                    'status' => $response->status(),
                    'body' => $response->body()
                ]);
                return null;
            }

            $data = $response->json();
            return $data['jwt'] ?? null;
        } catch (Exception $e) {
            logger()->error('Lemmy login exception', ['error' => $e->getMessage()]);
            return null;
        }
    }

    public function getCommunityId(string $communityName): int
    {
        try {
            $request = new LemmyRequest($this->instance);
            $response = $request->get('community', ['name' => $communityName]);

            if (!$response->successful()) {
                throw new Exception('Failed to fetch community: ' . $response->status());
            }

            $data = $response->json();
            return $data['community_view']['community']['id'] ?? throw new Exception('Community not found');
        } catch (Exception $e) {
            logger()->error('Community lookup failed', ['error' => $e->getMessage()]);
            throw $e;
        }
    }

    public function createPost(string $token, string $title, string $body, int $communityId, ?string $url = null, ?string $thumbnail = null): array
    {
        try {
            $request = new LemmyRequest($this->instance, $token);

            $postData = [
                'name' => $title,
                'body' => $body,
                'community_id' => $communityId,
            ];

            if ($url) {
                $postData['url'] = $url;
            }

            if ($thumbnail) {
                $postData['custom_thumbnail'] = $thumbnail;
            }

            $response = $request->post('post', $postData);

            if (!$response->successful()) {
                throw new Exception('Failed to create post: ' . $response->status() . ' - ' . $response->body());
            }

            return $response->json();
        } catch (Exception $e) {
            logger()->error('Post creation failed', ['error' => $e->getMessage()]);
            throw $e;
        }
    }
}