<?php
session_start();
header("Content-Type: application/json");
require 'db.php';

if (!isset($_SESSION['user_id'])) {
    echo json_encode(["error" => "Not logged in"]);
    exit;
}

$user_id = $_SESSION['user_id'];

$input = json_decode(file_get_contents("php://input"), true);
$result = $input['result'] ?? '';

if (!in_array($result, ['win','loss','draw'])) {
    echo json_encode(["error" => "Invalid result"]);
    exit;
}

// Pastikan row user di users_stats ADA
$stmt = $pdo->prepare("SELECT id FROM users_stats WHERE user_id = ?");
$stmt->execute([$user_id]);

// Jika belum ada, buat kosong
if (!$stmt->fetch()) {
    $pdo->prepare("INSERT INTO users_stats (user_id, wins, losses, draws) VALUES (?, 0, 0, 0)")
        ->execute([$user_id]);
}

// Update sesuai hasil
if ($result === 'win') {
    $sql = "UPDATE users_stats SET wins = wins + 1, updated_at = NOW() WHERE user_id = ?";
}
else if ($result === 'loss') {
    $sql = "UPDATE users_stats SET losses = losses + 1, updated_at = NOW() WHERE user_id = ?";
}
else if ($result === 'draw') {
    $sql = "UPDATE users_stats SET draws = draws + 1, updated_at = NOW() WHERE user_id = ?";
}

$pdo->prepare($sql)->execute([$user_id]);

echo json_encode(["success" => true]);