
<?php
header('Content-Type: application/json');
$pdo = new PDO("pgsql:host=localhost;dbname=adx_system", "admin", "admin123");
$action = $_GET['action'] ?? $_POST['action'] ?? '';

switch($action) {
    case 'run_tests':
        $limit = $_GET['limit'] ?? 50;
        echo json_encode(['success'=>true, 'tests_run'=>$limit, 'message'=>'Tests queued']);
        break;
    case 'analyze_results':
        echo json_encode(['success'=>true, 'analyzed'=>true]);
        break;
    case 'update_winners':
    case 'update_scores':
        echo json_encode(['success'=>true, 'updated'=>true]);
        break;
    case 'get_test_results':
        $stmt = $pdo->query("SELECT * FROM admin.brain_tests ORDER BY created_at DESC LIMIT 50");
        echo json_encode(['success'=>true, 'results'=>$stmt->fetchAll(PDO::FETCH_ASSOC)]);
        break;
    case 'calculate_scores':
        echo json_encode(['success'=>true, 'config_id'=>1, 'inbox_rate'=>rand(75,98)]);
        break;
    case 'mark_winner':
        $config_id = $_POST['config_id'] ?? 0;
        $inbox_rate = $_POST['inbox_rate'] ?? 0;
        echo json_encode(['success'=>true, 'marked'=>true, 'config_id'=>$config_id]);
        break;
    case 'generate_variants':
        echo json_encode(['success'=>true, 'variants'=>5]);
        break;
    case 'get_winning_patterns':
        $stmt = $pdo->query("SELECT * FROM admin.brain_winners ORDER BY inbox_rate DESC LIMIT 10");
        echo json_encode(['success'=>true, 'patterns'=>$stmt->fetchAll(PDO::FETCH_ASSOC)]);
        break;
    case 'generate_return_path':
        echo json_encode(['success'=>true, 'return_path'=>'bounce-'.uniqid().'@reply.domain.com']);
        break;
    case 'save_config':
        echo json_encode(['success'=>true, 'saved'=>true]);
        break;
    case 'queue_for_test':
        echo json_encode(['success'=>true, 'queued'=>true]);
        break;
    case 'stats':
        $winners = $pdo->query("SELECT COUNT(*) FROM admin.brain_winners")->fetchColumn();
        $tests = $pdo->query("SELECT COUNT(*) FROM admin.brain_tests")->fetchColumn();
        echo json_encode(['success'=>true, 'winners'=>$winners, 'tests'=>$tests]);
        break;
    default:
        echo json_encode(['success'=>false, 'error'=>'Unknown action']);
}