<?php
namespace App\Http\Controllers;

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

class IceServerController extends Controller
{
    public function __invoke(): JsonResponse
    {
        if (!Auth::check() && !session()->has('candidate_interview_id')) {
            return response()->json(['error' => 'Unauthenticated access.'], 401);
        }

        try {
            $baseUrl = config(
                "services.metered.url",
            );
            $apiKey = config(
                "services.metered.key",
            );

            $url = $baseUrl;
            if ($apiKey && !str_contains($url, "apiKey=")) {
                $separator = str_contains($url, "?") ? "&" : "?";
                $url .= $separator . "apiKey=" . urlencode($apiKey);
            }

            $data = Cache::remember('metered_credentials_cache', now()->addMinute(10), function() use($url) {
                $response = Http::timeout(5)->get($url);
                if(!$response->successful())
                {
                    Log::error(
                        "Metered API error response",
                        [
                            "status" => $response->status(),
                            "body" => $response->body(),
                        ],
                    );

                    throw new \RuntimeException('Metered API Error');
                }

                return $response->json();
            });
            return response()->json($data);

        } catch (\Throwable $e) {
            Log::error(
                "ICE servers fetch exception: " . $e->getMessage(),
            );

            return response()->json(
                [
                    "error" => "An error occurred while fetching ICE servers.",
                    "message" => $e->getMessage(),
                ],
                500,
            );
        }
    }
}