<?php
header('Content-Type: application/json');
include 'Database.php';
session_start();

$data = $_POST;
if (empty($data['username']) || empty($data['password'])) {
    echo json_encode(["status"=>"error","message"=>"Username & password dibutuhkan"]);
    exit;
}

$username = trim($data['username']);
$password = $data['password'];

$stmt = $conn->prepare("SELECT id FROM users WHERE username = ?");
$stmt->bind_param("s", $username);
$stmt->execute();
$stmt->store_result();
if ($stmt->num_rows > 0) {
    echo json_encode(["status"=>"error","message"=>"Username sudah terpakai"]);
    exit;
}
$stmt->close();

$hash = password_hash($password, PASSWORD_DEFAULT);
$stmt = $conn->prepare("INSERT INTO users (username, password) VALUES (?, ?)");
$stmt->bind_param("ss", $username, $hash);
if ($stmt->execute()) {
    $_SESSION['user_id'] = $stmt->insert_id;
    $_SESSION['username'] = $username;
    echo json_encode(["status"=>"success","message"=>"Register berhasil"]);
} else {
    echo json_encode(["status"=>"error","message"=>"Gagal mendaftar"]);
}
$stmt->close();
$conn->close();
?>