<?php

namespace App\Features\Scraper\Services;

use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Http;

class IGDBCoverScraper implements CoverScraperInterface
{
    private string $clientId;

    private string $clientSecret;

    private ?string $accessToken = null;

    public function __construct()
    {
        $this->clientId = config('services.igdb.client_id', '');
        $this->clientSecret = config('services.igdb.client_secret', '');
    }

    public function search(string $query, ?int $consoleId = null): Collection
    {
        if (empty($this->clientId) || empty($this->clientSecret)) {
            return collect();
        }

        $body = "search \"{$query}\"; fields name,cover.url,platforms,release_dates.year;";
        if ($consoleId) {
            $body .= " where platforms = [{$consoleId}];";
        }

        $response = $this->makeRequest('/games', $body);

        return collect($response)->map(fn ($game) => [
            'id' => $game['id'],
            'title' => $game['name'],
            'cover_url' => isset($game['cover']['url'])
                ? str_replace('thumb', 'cover_big', $game['cover']['url'])
                : null,
            'year' => $game['release_dates'][0]['year'] ?? null,
            'source' => 'igdb',
        ]);
    }

    public function getCoverUrl(int $externalId): ?string
    {
        if (empty($this->clientId) || empty($this->clientSecret)) {
            return null;
        }

        $response = $this->makeRequest(
            '/covers',
            "fields url; where game = {$externalId};"
        );

        if (! empty($response[0]['url'])) {
            return str_replace('thumb', 'cover_big', $response[0]['url']);
        }

        return null;
    }

    public function getScreenshotUrl(int $externalId): ?string
    {
        if (empty($this->clientId) || empty($this->clientSecret)) {
            return null;
        }

        $response = $this->makeRequest(
            '/screenshots',
            "fields url; where game = {$externalId};"
        );

        return $response[0]['url'] ?? null;
    }

    public function getImages(int $externalId): array
    {
        return array_filter([
            'cover' => $this->getCoverUrl($externalId),
            'screenshot' => $this->getScreenshotUrl($externalId),
        ]);
    }

    private function makeRequest(string $endpoint, string $body): array
    {
        try {
            $this->ensureAccessToken();

            $response = Http::withHeaders([
                'Client-ID' => $this->clientId,
                'Authorization' => "Bearer {$this->accessToken}",
            ])->timeout(10)->post("https://api.igdb.com/v4{$endpoint}", $body);

            if ($response->successful()) {
                return $response->json();
            }
        } catch (\Exception $e) {
            // Log error
        }

        return [];
    }

    private function ensureAccessToken(): void
    {
        if ($this->accessToken) {
            return;
        }

        $response = Http::asForm()->post('https://id.twitch.tv/oauth2/token', [
            'client_id' => $this->clientId,
            'client_secret' => $this->clientSecret,
            'grant_type' => 'client_credentials',
        ]);

        $this->accessToken = $response->json('access_token');
    }
}