<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\RateLimiter;
use Symfony\Component\HttpFoundation\Response;

class ThrottleSensitiveActions
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response)  $next
     * @param  string  $action
     * @return mixed
     */
    public function handle(Request $request, Closure $next, string $action)
    {
        $config = config("wasl.throttle.{$action}");

        if (!$config) {
            return $next($request);
        }

        $maxAttempts = $config['max'] ?? 5;
        $decayMinutes = $config['minutes'] ?? 1;

        // Generate key based on action, user_id (if logged in) or phone hash / IP
        $userId = $request->user()?->id;
        $ip = $request->ip();
        
        $phoneHash = '';
        if ($request->has('phone_number')) {
            $phoneHash = hash_phone($request->input('phone_number'));
        }

        $key = 'throttle:' . $action . ':' . ($userId ?: ($phoneHash ?: $ip));

        if (RateLimiter::tooManyAttempts($key, $maxAttempts)) {
            $seconds = RateLimiter::availableIn($key);
            
            return response()->json([
                'error' => 'Too Many Requests',
                'message' => "Too many attempts for {$action}. Please retry in {$seconds} seconds.",
                'retry_after' => $seconds,
            ], Response::HTTP_TOO_MANY_REQUESTS);
        }

        RateLimiter::hit($key, $decayMinutes * 60);

        $response = $next($request);

        // Optional: clear the rate limit on successful authentication for login
        if ($action === 'login' && $response->getStatusCode() === Response::HTTP_OK) {
            RateLimiter::clear($key);
        }

        return $response;
    }
}