<?php
namespace App\Controllers\Admin;

use App\Core\AdminBaseController;
use Db\Database;

class PeriodController extends AdminBaseController {
    public function __construct() {
        $this->checkLogin();
        $this->checkAdmin();
    }

    /**
     * 期号列表页面
     */
    public function index() {
        $db = new Database();
        try {
            // 获取所有期号列表
            $periods = $db->select('periods', '*', [
                'ORDER' => ['id' => 'DESC'],
                'LIMIT' => 100
            ]);

            if (!is_array($periods)) {
                $periods = [];
            }

            // 获取游戏列表（用于关联显示）
            $games = [];
            $gamesList = [];
            try {
                $gamesList = $db->select('games', ['id', 'name'], [
                    'status' => 1,
                    'ORDER' => ['id' => 'ASC']
                ]);
                if (is_array($gamesList)) {
                    foreach ($gamesList as $game) {
                        $games[$game['id']] = $game['name'];
                    }
                }
            } catch (\Throwable $e) {
                // 忽略错误
            }

            // 为每个游戏获取当前期号
            $currentPeriods = [];
            foreach ($gamesList as $game) {
                $currentPeriod = $db->get('periods', '*', [
                    'game_id' => $game['id'],
                    'ORDER' => ['id' => 'DESC']
                ]);
                if ($currentPeriod) {
                    $currentPeriods[$game['id']] = $currentPeriod;
                }
            }

        } catch (\Throwable $e) {
            $periods = [];
            $games = [];
            $gamesList = [];
            $currentPeriods = [];
        }

        $this->render('Admin/periods.php', [
            'currentPeriods' => $currentPeriods, // 改为多个游戏的当前期号
            'periods' => $periods,
            'games' => $games,
            'gamesList' => $gamesList, // 完整的游戏列表
            'title' => '期号管理'
        ]);
    }

    /**
     * 获取单个期号数据
     */
    public function get($id) {
        header('Content-Type: application/json');
        
        if (empty($id) || !is_numeric($id)) {
            echo json_encode([
                'success' => false,
                'message' => '无效的期号ID'
            ]);
            return;
        }

        $db = new Database();
        try {
            $period = $db->get('periods', '*', [
                'id' => $id
            ]);

            if ($period) {
                echo json_encode([
                    'success' => true,
                    'data' => $period
                ]);
            } else {
                echo json_encode([
                    'success' => false,
                    'message' => '期号不存在'
                ]);
            }
        } catch (\Throwable $e) {
            echo json_encode([
                'success' => false,
                'message' => '获取数据失败：' . $e->getMessage()
            ]);
        }
    }

    /**
     * 创建期号
     */
    public function create() {
        header('Content-Type: application/json');

        $data = $_POST;
        if (empty($data)) {
            echo json_encode([
                'success' => false,
                'message' => '未接收到数据'
            ]);
            return;
        }

        $db = new Database();
        
        $gameId = isset($data['game_id']) ? (int)$data['game_id'] : null;
        
        // 如果关联了游戏，从游戏中获取直播流地址
        $streamUrl = null;
        if ($gameId) {
            try {
                $game = $db->get('games', ['stream_url'], ['id' => $gameId]);
                if ($game && !empty($game['stream_url'])) {
                    $streamUrl = $game['stream_url'];
                }
            } catch (\Throwable $e) {
                // 忽略错误，继续使用 null
            }
        }
        
        // 获取当前登录的管理员ID
        $createdBy = isset($_SESSION['user_id']) ? (int)$_SESSION['user_id'] : null;

        // 生成期号
        $periodNumber = $this->generatePeriodNumber($db, $gameId);

        // 准备数据
        $periodData = [
            'period_number' => $periodNumber,
            'status' => 'pending',
            'game_id' => $gameId ?: null,
            'stream_url' => $streamUrl,
            'start_time' => date('Y-m-d H:i:s'),
            'created_by' => $createdBy,
            'auto_generated' => 0, // 手动创建
            'created_at' => date('Y-m-d H:i:s'),
            'updated_at' => date('Y-m-d H:i:s')
        ];

        try {
            $id = $db->insert('periods', $periodData);
            
            echo json_encode([
                'success' => true,
                'message' => '期号创建成功',
                'data' => ['id' => $id, 'period_number' => $periodNumber]
            ]);
        } catch (\Exception $e) {
            echo json_encode([
                'success' => false,
                'message' => '创建失败：' . $e->getMessage()
            ]);
        }
    }

    /**
     * 录入开奖结果
     */
    public function draw() {
        header('Content-Type: application/json');

        $data = $_POST;
        if (empty($data)) {
            $input = file_get_contents('php://input');
            $data = json_decode($input, true);
        }

        if (empty($data)) {
            echo json_encode([
                'success' => false,
                'message' => '未接收到数据'
            ]);
            return;
        }

        $db = new Database();
        $id = isset($data['id']) ? (int)$data['id'] : 0;
        
        if ($id <= 0) {
            echo json_encode([
                'success' => false,
                'message' => '无效的期号ID'
            ]);
            return;
        }

        // 获取期号信息
        $period = $db->get('periods', '*', ['id' => $id]);
        if (!$period) {
            echo json_encode([
                'success' => false,
                'message' => '期号不存在'
            ]);
            return;
        }

        // 检查期号状态
        if ($period['status'] === 'settled') {
            echo json_encode([
                'success' => false,
                'message' => '该期号已结算，无法修改'
            ]);
            return;
        }

        // 获取游戏类型
        $game = $db->get('games', ['type'], ['id' => $period['game_id']]);
        $gameType = $game['type'] ?? 'dice';

        $auto = isset($data['auto']) ? (bool)$data['auto'] : false;

        // 根据游戏类型处理开奖结果
        if ($gameType === 'xocdia') {
            // Xóc Đĩa 开奖逻辑
            if ($auto) {
                // 自动生成：4个硬币随机红/白
                $coins = [];
                for ($i = 0; $i < 4; $i++) {
                    $coins[] = (rand(0, 1) === 0) ? 'red' : 'white';
                }
            } else {
                // 手动输入：从前端获取
                $coins = isset($data['coins']) ? $data['coins'] : [];
                if (!is_array($coins) || count($coins) !== 4) {
                    echo json_encode([
                        'success' => false,
                        'message' => 'Xóc Đĩa 必须提供4个硬币的颜色（red/white）'
                    ]);
                    return;
                }
                // 验证颜色
                foreach ($coins as $coin) {
                    if (!in_array($coin, ['red', 'white'])) {
                        echo json_encode([
                            'success' => false,
                            'message' => '硬币颜色只能是 red 或 white'
                        ]);
                        return;
                    }
                }
            }

            // 计算结果
            $redCount = count(array_filter($coins, fn($c) => $c === 'red'));
            $result = $this->calculateXocdiaResult($redCount);

            // 获取当前登录的管理员ID（审核人）
            $approvedBy = isset($_SESSION['user_id']) ? (int)$_SESSION['user_id'] : null;

            // 更新期号数据
            $updateData = [
                'result' => json_encode($coins), // 存储JSON数组
                'dice1' => $redCount, // 复用字段：红色数量
                'dice2' => 4 - $redCount, // 复用字段：白色数量
                'dice3' => null,
                'total' => null,
                'status' => 'drawn',
                'draw_time' => date('Y-m-d H:i:s'),
                'approved_by' => $approvedBy,
                'updated_at' => date('Y-m-d H:i:s')
            ];

            $responseData = [
                'coins' => $coins,
                'red_count' => $redCount,
                'white_count' => 4 - $redCount,
                'result' => $result
            ];
        } else {
            // 骰子游戏开奖逻辑（原逻辑）
            if ($auto) {
                $dice1 = rand(1, 6);
                $dice2 = rand(1, 6);
                $dice3 = rand(1, 6);
            } else {
                $dice1 = isset($data['dice1']) ? (int)$data['dice1'] : 0;
                $dice2 = isset($data['dice2']) ? (int)$data['dice2'] : 0;
                $dice3 = isset($data['dice3']) ? (int)$data['dice3'] : 0;

                // 验证骰子点数
                if ($dice1 < 1 || $dice1 > 6 || $dice2 < 1 || $dice2 > 6 || $dice3 < 1 || $dice3 > 6) {
                    echo json_encode([
                        'success' => false,
                        'message' => '骰子点数必须在1-6之间'
                    ]);
                    return;
                }
            }

            // 计算总和
            $total = $dice1 + $dice2 + $dice3;

            // 计算结果
            $result = $this->calculateResult($dice1, $dice2, $dice3, $total);

            // 获取当前登录的管理员ID（审核人）
            $approvedBy = isset($_SESSION['user_id']) ? (int)$_SESSION['user_id'] : null;

            // 更新期号数据
            $updateData = [
                'dice1' => $dice1,
                'dice2' => $dice2,
                'dice3' => $dice3,
                'total' => $total,
                'result' => $result,
                'status' => 'drawn',
                'draw_time' => date('Y-m-d H:i:s'),
                'approved_by' => $approvedBy,
                'updated_at' => date('Y-m-d H:i:s')
            ];

            $responseData = [
                'dice1' => $dice1,
                'dice2' => $dice2,
                'dice3' => $dice3,
                'total' => $total,
                'result' => $result
            ];
        }

        try {
            $db->update('periods', $updateData, ['id' => $id]);

            echo json_encode([
                'success' => true,
                'message' => '开奖结果已录入',
                'data' => $responseData
            ]);
        } catch (\Exception $e) {
            echo json_encode([
                'success' => false,
                'message' => '录入失败：' . $e->getMessage()
            ]);
        }
    }

    /**
     * 启动新一期（开始下注）
     */
    public function start() {
        header('Content-Type: application/json');

        $data = $_POST;
        if (empty($data)) {
            $input = file_get_contents('php://input');
            $data = json_decode($input, true);
        }

        $gameId = isset($data['game_id']) ? (int)$data['game_id'] : 0;

        if ($gameId <= 0) {
            echo json_encode([
                'success' => false,
                'message' => '请选择游戏'
            ]);
            return;
        }

        $db = new Database();

        // 检查该游戏是否有未结束的期号
        $activePeriod = $db->get('periods', '*', [
            'game_id' => $gameId,
            'status' => ['pending', 'locked', 'drawn']
        ]);

        if ($activePeriod) {
            echo json_encode([
                'success' => false,
                'message' => '该游戏当前有未结束的期号，无法开始新一轮'
            ]);
            return;
        }

        // 生成期号
        $periodNumber = $this->generatePeriodNumber($db, $gameId);

        // 从游戏配置��取stream_url
        $streamUrl = null;
        $game = $db->get('games', ['stream_url'], ['id' => $gameId]);
        if ($game && !empty($game['stream_url'])) {
            $streamUrl = $game['stream_url'];
        }

        $periodData = [
            'period_number' => $periodNumber,
            'status' => 'pending',
            'game_id' => $gameId,
            'stream_url' => $streamUrl,
            'start_time' => date('Y-m-d H:i:s'),
            'auto_generated' => 0, // 手动点击开始
            'created_at' => date('Y-m-d H:i:s'),
            'updated_at' => date('Y-m-d H:i:s')
        ];

        try {
            $id = $db->insert('periods', $periodData);
            
            echo json_encode([
                'success' => true,
                'message' => '新一期已启动，开始下注',
                'data' => [
                    'id' => $id,
                    'period_number' => $periodNumber,
                    'start_time' => $periodData['start_time']
                ]
            ]);
        } catch (\Exception $e) {
            echo json_encode([
                'success' => false,
                'message' => '启动失败：' . $e->getMessage()
            ]);
        }
    }

    /**
     * 确认开奖并结算（自动创建下一期）
     */
    public function settle() {
        ob_clean();
        header('Content-Type: application/json');

        $data = $_POST;
        if (empty($data)) {
            $input = file_get_contents('php://input');
            $data = json_decode($input, true);
        }

        $id = isset($data['id']) ? (int)$data['id'] : 0;
        
        if ($id <= 0) {
            echo json_encode([
                'success' => false,
                'message' => '无效的期号ID'
            ]);
            return;
        }

        $db = new Database();
        
        // 获取期号信息
        $period = $db->get('periods', '*', ['id' => $id]);
        if (!$period) {
            echo json_encode([
                'success' => false,
                'message' => '期号不存在'
            ]);
            return;
        }

        // 检查期号状态
        if ($period['status'] !== 'drawn') {
            echo json_encode([
                'success' => false,
                'message' => '该期号还未开奖，无法结算'
            ]);
            return;
        }

        if ($period['status'] === 'settled') {
            echo json_encode([
                'success' => false,
                'message' => '该期号已结算'
            ]);
            return;
        }

        try {
            // 开启事务
            $db->medoo->pdo->beginTransaction();

            // 1. 获取本期所有待结算注单
            $bets = $db->select('bets', '*', [
                'period_id' => $id,
                'status' => 'pending'
            ]);

            // 2. 遍历注单进行结算
            if ($bets) {
                foreach ($bets as $bet) {
                    $checkResult = $this->checkWin($bet, $period);
                    $isWin = $checkResult['win'];
                    $winAmount = $checkResult['amount']; // 纯赢金额

                    $now = date('Y-m-d H:i:s');
                    
                    if ($isWin) {
                        $payout = $bet['amount'] + $winAmount; // 本金 + 盈利
                        
                        // 更新注单状态
                        $db->update('bets', [
                            'status' => 'win',
                            'win_amount' => $winAmount,
                            'settled_at' => $now,
                            'updated_at' => $now
                        ], ['id' => $bet['id']]);

                        // 更新用户余额
                        $db->update('users', [
                            'balance[+]' => $payout
                        ], ['id' => $bet['user_id']]);

                        // 获取更新后的余额（用于记录流水）
                        $user = $db->get('users', ['balance'], ['id' => $bet['user_id']]);
                        $balanceAfter = $user['balance'];
                        $balanceBefore = $balanceAfter - $payout;

                        // 写入资金流水
                        $db->insert('transactions', [
                            'user_id' => $bet['user_id'],
                            'type' => 'win',
                            'amount' => $payout,
                            'balance_before' => $balanceBefore,
                            'balance_after' => $balanceAfter,
                            'related_id' => $bet['id'],
                            'description' => "中奖 - 期号: " . $period['period_number'],
                            'created_at' => $now
                        ]);

                    } else {
                        // 未中奖
                        $db->update('bets', [
                            'status' => 'lose',
                            'win_amount' => 0,
                            'settled_at' => $now,
                            'updated_at' => $now
                        ], ['id' => $bet['id']]);
                    }
                }
            }

            // 更新期号状态为已结算
            $db->update('periods', [
                'status' => 'settled',
                'updated_at' => date('Y-m-d H:i:s')
            ], ['id' => $id]);

            // 移除自动创建下一期的逻辑，改为由管理员手动点击"开始下注"
            /*
            // 自动创建下一期
            $nextPeriodNumber = $this->generatePeriodNumber($db);
            
            // 如果当前期号没有 stream_url，尝试从关联游戏中获取
            $nextStreamUrl = $period['stream_url'];
            if (empty($nextStreamUrl) && !empty($period['game_id'])) {
                try {
                    $game = $db->get('games', ['stream_url'], ['id' => $period['game_id']]);
                    if ($game && !empty($game['stream_url'])) {
                        $nextStreamUrl = $game['stream_url'];
                    }
                } catch (\Throwable $e) {
                    // 忽略错误，继续使用原值
                }
            }
            
            $nextPeriodData = [
                'period_number' => $nextPeriodNumber,
                'status' => 'pending',
                'game_id' => $period['game_id'],
                'stream_url' => $nextStreamUrl,
                'start_time' => date('Y-m-d H:i:s'),
                'auto_generated' => 1, // 自动生成
                'created_at' => date('Y-m-d H:i:s'),
                'updated_at' => date('Y-m-d H:i:s')
            ];
            
            $nextPeriodId = $db->insert('periods', $nextPeriodData);
            */
            $nextPeriodId = 0;
            $nextPeriodNumber = '';
            
            // 提交事务
            $db->medoo->pdo->commit();

            echo json_encode([
                'success' => true,
                'message' => '结算成功，请点击"开始下注"启动下一期',
                'data' => [
                    'current_period_id' => $id,
                    // 'next_period_id' => $nextPeriodId,
                    // 'next_period_number' => $nextPeriodNumber
                ]
            ]);
        } catch (\Exception $e) {
            // 回滚事务
            if (isset($db->medoo->pdo)) {
                $db->medoo->pdo->rollBack();
            }

            echo json_encode([
                'success' => false,
                'message' => '结算失败：' . $e->getMessage()
            ]);
        }
    }

    /**
     * 封盘
     */
    public function lock() {
        header('Content-Type: application/json');

        $data = $_POST;
        if (empty($data)) {
            $input = file_get_contents('php://input');
            $data = json_decode($input, true);
        }
        $id = isset($data['id']) ? (int)$data['id'] : 0;
        
        if ($id <= 0) {
            echo json_encode([
                'success' => false,
                'message' => '无效的期号ID'
            ]);
            return;
        }

        $db = new Database();
        
        // 获取期号信息
        $period = $db->get('periods', '*', ['id' => $id]);
        if (!$period) {
            echo json_encode([
                'success' => false,
                'message' => '期号不存在'
            ]);
            return;
        }

        // 检查期号状态
        if ($period['status'] !== 'pending') {
            echo json_encode([
                'success' => false,
                'message' => '该期号状态不允许封盘'
            ]);
            return;
        }

        try {
            $db->update('periods', [
                'status' => 'locked',
                'end_time' => date('Y-m-d H:i:s'),
                'updated_at' => date('Y-m-d H:i:s')
            ], ['id' => $id]);

            echo json_encode([
                'success' => true,
                'message' => '封盘成功'
            ]);
        } catch (\Exception $e) {
            echo json_encode([
                'success' => false,
                'message' => '封盘失败：' . $e->getMessage()
            ]);
        }
    }

    /**
     * 生成期号
     * 格式：G{GameID}{YYYYMMDD}{NNNN}
     * 例如：G1202512240001
     */
    private function generatePeriodNumber($db, $gameId = null) {
        // 如果没有指定游戏ID，默认使用1
        $gameId = $gameId ?: 1;
        
        $now = new \DateTime();
        $dateStr = $now->format('Ymd');
        $prefix = "G{$gameId}{$dateStr}";
        
        // 查询当天该游戏最大的期号
        try {
            $lastPeriod = $db->get('periods', 'period_number', [
                'period_number[~]' => $prefix . '%',
                'ORDER' => ['period_number' => 'DESC']
            ]);
            
            if ($lastPeriod) {
                // 提取序号并+1
                $lastSeq = substr($lastPeriod, strlen($prefix));
                $newSeq = (int)$lastSeq + 1;
                $seqStr = str_pad((string)$newSeq, 4, '0', STR_PAD_LEFT);
            } else {
                // 当天第一期
                $seqStr = '0001';
            }
            
            return $prefix . $seqStr;
            
        } catch (\Throwable $e) {
            // 发生错误时回退到时间戳随机数，防止阻塞
            return $prefix . time();
        }
    }

    /**
     * 检查注单是否中奖
     */
    private function checkWin($bet, $period) {
        $betType = $bet['bet_type'];
        $betValue = $bet['bet_value'];
        $betAmount = (float)$bet['amount'];
        $gameId = $period['game_id'] ?? 1;

        $db = new Database();

        // 获取游戏类型
        $game = $db->get('games', ['type'], ['id' => $gameId]);
        $gameType = $game['type'] ?? 'dice';

        // 获取该游戏的所有赔率配置
        static $oddsCache = [];
        if (!isset($oddsCache[$gameId])) {
            $oddsData = $db->select('game_odds', '*', ['game_id' => $gameId]);
            $oddsCache[$gameId] = [];
            foreach ($oddsData as $odd) {
                $key = $odd['type'] . '_' . $odd['target'];
                $oddsCache[$gameId][$key] = (float)$odd['odds'];
            }
        }

        $isWin = false;
        $payoutMultiplier = 0;

        // 辅助函数：获取赔率
        $getOdds = function($type, $target = 'all') use ($oddsCache, $gameId) {
            $key = $type . '_' . $target;
            // 如果找不到特定target的赔率，尝试查找 'all'
            if (isset($oddsCache[$gameId][$key])) {
                return $oddsCache[$gameId][$key];
            }
            $allKey = $type . '_all';
            return $oddsCache[$gameId][$allKey] ?? 0;
        };

        // Xóc Đĩa 游戏结算逻辑
        if ($gameType === 'xocdia') {
            // 从 result 字段解析硬币颜色数组
            $coins = json_decode($period['result'], true);
            if (!is_array($coins) || count($coins) !== 4) {
                return ['win' => false, 'amount' => 0];
            }

            $redCount = count(array_filter($coins, fn($c) => $c === 'red'));
            $whiteCount = 4 - $redCount;

            switch ($betType) {
                case 'chan': // 双(偶): 4红 或 4白 或 2红2白
                    if (in_array($redCount, [0, 2, 4])) {
                        $isWin = true;
                        $payoutMultiplier = $getOdds('chan', $betValue);
                    }
                    break;

                case 'le': // 单(奇): 3红1白 或 3白1红
                    if (in_array($redCount, [1, 3])) {
                        $isWin = true;
                        $payoutMultiplier = $getOdds('le', $betValue);
                    }
                    break;

                case 'exact': // 精确颜色组合
                    switch ($betValue) {
                        case '4red':
                            if ($redCount === 4) $isWin = true;
                            break;
                        case '4white':
                            if ($redCount === 0) $isWin = true;
                            break;
                        case '3red1white':
                            if ($redCount === 3) $isWin = true;
                            break;
                        case '3white1red':
                            if ($redCount === 1) $isWin = true;
                            break;
                    }
                    if ($isWin) {
                        $payoutMultiplier = $getOdds('exact', $betValue);
                    }
                    break;
            }

            if ($isWin && $payoutMultiplier > 0) {
                return [
                    'win' => true,
                    'amount' => $betAmount * $payoutMultiplier
                ];
            }

            return ['win' => false, 'amount' => 0];
        }

        // 骰子游戏结算逻辑（原逻辑）
        $dice1 = (int)$period['dice1'];
        $dice2 = (int)$period['dice2'];
        $dice3 = (int)$period['dice3'];
        $total = (int)$period['total'];

        switch ($betType) {
            case 'xiu': // 小 (4-10)
                // 爆子处理：1-3为小，4-6为大
                if ($dice1 == $dice2 && $dice2 == $dice3) {
                     if ($dice1 <= 3) $isWin = true;
                } else {
                    if ($total >= 4 && $total <= 10) $isWin = true;
                }
                $payoutMultiplier = $getOdds('xiu');
                break;
                
            case 'tai': // 大 (11-17)
                // 爆子处理：1-3为小，4-6为大
                if ($dice1 == $dice2 && $dice2 == $dice3) {
                     if ($dice1 >= 4) $isWin = true;
                } else {
                    if ($total >= 11 && $total <= 17) $isWin = true;
                }
                $payoutMultiplier = $getOdds('tai');
                break;
                
            case 'chan': // 偶数
                if ($total % 2 == 0) $isWin = true;
                $payoutMultiplier = $getOdds('chan');
                break;
                
            case 'le': // 奇数
                if ($total % 2 != 0) $isWin = true;
                $payoutMultiplier = $getOdds('le');
                break;
                
            case 'number': // 单数字 (Sum)
                if ($total == (int)$betValue) {
                    $isWin = true;
                    $payoutMultiplier = $getOdds('sum', $betValue);
                }
                break;
                
            case 'dice': // 单个骰子
                $count = 0;
                if ($dice1 == (int)$betValue) $count++;
                if ($dice2 == (int)$betValue) $count++;
                if ($dice3 == (int)$betValue) $count++;
                
                if ($count > 0) {
                    $isWin = true;
                    // 单个骰子赔率通常是 1:1, 1:2, 1:3
                    // 但数据库中只存了基础赔率 (e.g. 0.97 or 1.0)
                    // 这里我们假设数据库存的是 1赔X 的 X
                    // 如果是双骰或三骰，通常规则是：
                    // 1个: 1倍
                    // 2个: 2倍
                    // 3个: 3倍
                    // 我们读取基础赔率，然后乘以数量
                    $baseOdds = $getOdds('dice', $betValue);
                    $payoutMultiplier = $baseOdds * $count;
                }
                break;
                
            case 'combo': // 豹子 (Specific Triple)
                // betValue 存储的是总和 (3, 6, ..., 18) 或 'any_triple'
                if ($betValue === 'any_triple') {
                     if ($dice1 == $dice2 && $dice2 == $dice3) {
                         $isWin = true;
                         $payoutMultiplier = $getOdds('combo', 'any_triple');
                     }
                } else {
                    if ($dice1 == $dice2 && $dice2 == $dice3 && $total == (int)$betValue) {
                        $isWin = true;
                        $payoutMultiplier = $getOdds('combo', 'specific_triple');
                    }
                }
                break;
        }
        
        if ($isWin && $payoutMultiplier > 0) {
            return [
                'win' => true,
                'amount' => $betAmount * $payoutMultiplier
            ];
        }
        
        return ['win' => false, 'amount' => 0];
    }

    /**
     * 计算开奖结果（骰子游戏）
     * @param int $dice1 骰子1点数
     * @param int $dice2 骰子2点数
     * @param int $dice3 骰子3点数
     * @param int $total 总和
     * @return string 结果：Xỉu/Tài/Bão
     */
    private function calculateResult($dice1, $dice2, $dice3, $total) {
        // 检查是否为爆子（三个骰子相同）
        if ($dice1 === $dice2 && $dice2 === $dice3) {
            // 爆子根据点数判断：1-3为Xỉu，4-6为Tài
            if ($dice1 <= 3) {
                return 'Xỉu';
            } else {
                return 'Tài';
            }
        }

        // 普通大小判断：4-10点为小（Xỉu），11-17点为大（Tài）
        if ($total >= 4 && $total <= 10) {
            return 'Xỉu';
        } else {
            return 'Tài';
        }
    }

    /**
     * 计算 Xóc Đĩa 开奖结果
     * @param int $redCount 红色硬币数量
     * @return string 结果描述
     */
    private function calculateXocdiaResult($redCount) {
        switch ($redCount) {
            case 0:
                return '4 Trắng (Chẵn)';
            case 1:
                return '3 Trắng 1 Đỏ (Lẻ)';
            case 2:
                return '2 Trắng 2 Đỏ (Chẵn)';
            case 3:
                return '3 Đỏ 1 Trắng (Lẻ)';
            case 4:
                return '4 Đỏ (Chẵn)';
            default:
                return 'Không xác định';
        }
    }
}