<?php
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
$target = $_GET['target'] ?? '';
$action = $_GET['action'] ?? 'generate';

switch ($action) {
    case 'generate':
        if (empty($target)) {
            echo json_encode(['error' => 'target API URL required']);
            exit;
        }
        // Generate test cases using curl-based probing
        $endpoints = [];
        $methods = ['GET', 'POST', 'PUT', 'DELETE'];
        foreach ($methods as $m) {
            $ch = curl_init($target);
            curl_setopt_array($ch, [
                CURLOPT_CUSTOMREQUEST => $m,
                CURLOPT_RETURNTRANSFER => true,
                CURLOPT_TIMEOUT => 5,
                CURLOPT_NOBODY => $m === 'DELETE',
            ]);
            $resp = curl_exec($ch);
            $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
            curl_close($ch);
            $endpoints[] = ['method' => $m, 'status' => $code, 'size' => strlen($resp)];
        }
        echo json_encode(['ok' => true, 'target' => $target, 'tests_generated' => count($endpoints), 'results' => $endpoints, 'engine' => 'EvoMaster-lite']);
        break;
    case 'status':
        echo json_encode(['ok' => true, 'engine' => 'EvoMaster', 'capabilities' => [
            'api_fuzzing' => true,
            'regression_tests' => true,
            'evolutionary_algo' => true,
            'coverage_expansion' => true
        ]]);
        break;
    default:
        echo json_encode(['error' => 'action: generate|status']);
}