<?php
namespace App\Controllers\Admin;

use App\Core\AdminBaseController;
use Db\Database;

class DicePeriodController extends AdminBaseController {
    private $gameType = 'dice';

    public function __construct() {
        $this->checkLogin();
        $this->checkAdmin();
    }

    /**
     * 骰子游戏期号列表页面
     */
    public function index() {
        $db = new Database();
        try {
            // 获取骰子游戏列表
            $gamesList = $db->select('games', ['id', 'name'], [
                'type' => $this->gameType,
                'status' => 1,
                'ORDER' => ['id' => 'ASC']
            ]);

            if (!is_array($gamesList)) {
                $gamesList = [];
            }

            // 获取所有骰子游戏的game_id
            $gameIds = array_column($gamesList, 'id');

            // 获取骰子游戏的期号列表
            $periods = [];
            if (!empty($gameIds)) {
                $periods = $db->select('periods', '*', [
                    'game_id' => $gameIds,
                    'ORDER' => ['id' => 'DESC'],
                    'LIMIT' => 100
                ]);
            }

            if (!is_array($periods)) {
                $periods = [];
            }

            // 构建游戏名称映射
            $games = [];
            foreach ($gamesList as $game) {
                $games[$game['id']] = $game['name'];
            }

            // 为每个骰子游戏获取当前期号
            $currentPeriods = [];
            foreach ($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/dice_periods.php', [
            'currentPeriods' => $currentPeriods,
            'periods' => $periods,
            'games' => $games,
            'gamesList' => $gamesList,
            'title' => '骰子游戏期号管理'
        ]);
    }

    /**
     * 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) {
                // 验证是否为骰子游戏期号
                $game = $db->get('games', ['type'], ['id' => $period['game_id']]);
                if ($game && $game['type'] === $this->gameType) {
                    echo json_encode([
                        'success' => true,
                        'data' => $period
                    ]);
                } else {
                    echo json_encode([
                        'success' => false,
                        'message' => '期号不属于骰子游戏'
                    ]);
                }
            } 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()
            ]);
        }
    }

    /**
     * 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;
        }

        // 验证是否为骰子游戏
        $game = $db->get('games', ['type'], ['id' => $period['game_id']]);
        if (!$game || $game['type'] !== $this->gameType) {
            echo json_encode([
                'success' => false,
                'message' => '期号不属于骰子游戏'
            ]);
            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;
        }

        $auto = isset($data['auto']) ? (bool)$data['auto'] : false;

        // 骰子游戏开奖逻辑
        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();

        // 验证游戏类型
        $game = $db->get('games', ['type', 'stream_url'], ['id' => $gameId]);
        if (!$game || $game['type'] !== $this->gameType) {
            echo json_encode([
                'success' => false,
                'message' => '游戏不属于骰子游戏'
            ]);
            return;
        }

        // 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);

        // 获取stream_url
        $streamUrl = !empty($game['stream_url']) ? $game['stream_url'] : null;

        $periodData = [
            'period_number' => $periodNumber,
            'status' => 'pending',
            'game_id' => $gameId,
            'stream_url' => $streamUrl,
            'start_time' => date('Y-m-d H:i:s'),
            'auto_generated' => 0,
            '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
     */
    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;
        }

        // 验证是否为骰子游戏
        $game = $db->get('games', ['type'], ['id' => $period['game_id']]);
        if (!$game || $game['type'] !== $this->gameType) {
            echo json_encode([
                'success' => false,
                'message' => '期号不属于骰子游戏'
            ]);
            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();

            // 获取本期所有待结算注单
            $bets = $db->select('bets', '*', [
                'period_id' => $id,
                'status' => 'pending'
            ]);

            // 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'];

                    $now = date('Y-m-d H:i:s');

                    if ($isWin) {
                        $payout = $bet['amount'] + $winAmount;

                        // 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
                        $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]);

            // 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
                ]
            ]);
        } 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;
        }

        // 验证是否为骰子游戏
        $game = $db->get('games', ['type'], ['id' => $period['game_id']]);
        if (!$game || $game['type'] !== $this->gameType) {
            echo json_encode([
                'success' => false,
                'message' => '期号不属于骰子游戏'
            ]);
            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
     */
    private function generatePeriodNumber($db, $gameId) {
        $now = new \DateTime();
        $dateStr = $now->format('Ymd');
        $prefix = "G{$gameId}{$dateStr}";

        try {
            $lastPeriod = $db->get('periods', 'period_number', [
                'period_number[~]' => $prefix . '%',
                'ORDER' => ['period_number' => 'DESC']
            ]);

            if ($lastPeriod) {
                $lastSeq = substr($lastPeriod, strlen($prefix));
                $newSeq = (int)$lastSeq + 1;
                $seqStr = str_pad((string)$newSeq, 4, '0', STR_PAD_LEFT);
            } else {
                $seqStr = '0001';
            }

            return $prefix . $seqStr;

        } catch (\Throwable $e) {
            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'];

        $db = new Database();

        // 获取赔率配置
        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;

        // 获取赔率
        $getOdds = function($type, $target = 'all') use ($oddsCache, $gameId) {
            $key = $type . '_' . $target;
            if (isset($oddsCache[$gameId][$key])) {
                return $oddsCache[$gameId][$key];
            }
            $allKey = $type . '_all';
            return $oddsCache[$gameId][$allKey] ?? 0;
        };

        // 骰子游戏结算逻辑
        $dice1 = (int)$period['dice1'];
        $dice2 = (int)$period['dice2'];
        $dice3 = (int)$period['dice3'];
        $total = (int)$period['total'];

        switch ($betType) {
            case 'xiu': // 小 (4-10)
                if ($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)
                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;
                    $baseOdds = $getOdds('dice', $betValue);
                    $payoutMultiplier = $baseOdds * $count;
                }
                break;

            case 'combo': // 豹子
                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
     */
    private function calculateResult($dice1, $dice2, $dice3, $total) {
        // 检查是否为爆子
        if ($dice1 === $dice2 && $dice2 === $dice3) {
            if ($dice1 <= 3) {
                return 'Xỉu';
            } else {
                return 'Tài';
            }
        }

        // 普通大小判断
        if ($total >= 4 && $total <= 10) {
            return 'Xỉu';
        } else {
            return 'Tài';
        }
    }
}