<?php

namespace App\Services;

use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Log;

class IgdbAuthService
{
    private const TOKEN_CACHE_KEY = 'igdb_access_token';
    private const TOKEN_EXPIRY = 3600*24*31; // 1 month in seconds

    public function getAccessToken(): string
    {
        return Cache::remember(self::TOKEN_CACHE_KEY, self::TOKEN_EXPIRY, function () {
            return $this->fetchNewAccessToken();
        });
    }

    private function fetchNewAccessToken(): string
    {
        try {
            // Log the config values to debug
            Log::info('IGDB Auth Attempt', [
                'client_id' => config('services.igdb.credentials.client_id'),
                'client_secret' => config('services.igdb.credentials.client_secret')
            ]);

            $clientId = config('igdb.credentials.client_id');
            $clientSecret = config('igdb.credentials.client_secret');

            if (empty($clientId) || empty($clientSecret)) {
                throw new \Exception("IGDB credentials are not properly configured");
            }

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

            if (!$response->successful()) {
                Log::error('IGDB Auth Response', [
                    'status' => $response->status(),
                    'body' => $response->body()
                ]);
                throw new \Exception("Failed to get access token: " . $response->body());
            }

            $data = $response->json();
            return $data['access_token'];
        } catch (\Exception $e) {
            Log::error('Failed to fetch IGDB access token', [
                'error' => $e->getMessage()
            ]);
            throw $e;
        }
    }
}