<?php
namespace App\Http\Controllers;

use Illuminate\Http\JsonResponse;
use Illuminate\Support\Facades\Auth;
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",
                env('METERD_URL', 'https://single-login-system.metered.live/api/v1/turn/credentials')
            );
            $apiKey = config(
                "services.metered.key",
                env('METERED_KEY', 'ffc9146ac5c2f75d83d7c679d8553a21c8fa')
            );

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

            $response = Http::timeout(5)->get($url);

            if ($response->successful()) {
                return response()->json($response->json());
            }

            Log::error(
                "Metered API error response",
                [
                    "status" => $response->status(),
                    "body" => $response->body(),
                ],
            );

            return response()->json(
                [
                    "error" => "Failed to fetch ICE servers",
                    "status" => $response->status(),
                ],
                $response->status() >= 400 && $response->status() < 600
                    ? $response->status()
                    : 500,
            );
        } 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,
            );
        }
    }
}