<?php

namespace app\common\Service\Lottery;

use app\common\model\lottery\LotteryDrawRecord;
use app\common\model\lottery\LotteryWinRecord;
use app\common\model\lottery\LotteryPrize;
use app\common\Enum\LotteryEnum;
use think\Exception;
use app\common\model\lottery\LotteryActivity;
/**
 * 抽奖记录服务类
 * 专门处理抽奖记录和中奖记录的业务逻辑
 */
class LotteryRecordService
{
    // ============ 抽奖记录相关方法 ============

    /**
     * 创建抽奖记录
     */
    public static function createDrawRecord($activityId, $userId, $prizeId, $isWin, $triggerType, $triggerOrderId = null, $triggerAmount = null, $winInfo = [])
    {
        $data = [
            'activity_id' => $activityId,
            'user_id' => $userId,
            'prize_id' => $prizeId,
            'is_win' => $isWin ? 1 : 0,
            'trigger_type' => $triggerType,
            'trigger_order_id' => $triggerOrderId,
            'trigger_amount' => $triggerAmount,
            'win_info' => $winInfo ? json_encode($winInfo) : '',
            'draw_ip' => request()->ip(),
            'draw_time' => time(),
            'device_info' => request()->header('user-agent', '')
        ];
        
        return LotteryDrawRecord::create($data);
    }

    /**
     * 获取用户抽奖次数
     */
    public static function getUserDrawCount($activityId, $userId, $timeRange = null)
    {
        $query = LotteryDrawRecord::where('activity_id', $activityId)
                                  ->where('user_id', $userId);
        
        if ($timeRange) {
            if (isset($timeRange['start'])) {
                $query->where('draw_time', '>=', $timeRange['start']);
            }
            if (isset($timeRange['end'])) {
                $query->where('draw_time', '<=', $timeRange['end']);
            }
        }
        
        return $query->count();
    }

    /**
     * 获取用户中奖次数
     */
    public static function getUserWinCount($activityId, $userId, $timeRange = null)
    {
        $query = LotteryDrawRecord::where('activity_id', $activityId)
                                  ->where('user_id', $userId)
                                  ->where('is_win', 1);
        
        if ($timeRange) {
            if (isset($timeRange['start'])) {
                $query->where('draw_time', '>=', $timeRange['start']);
            }
            if (isset($timeRange['end'])) {
                $query->where('draw_time', '<=', $timeRange['end']);
            }
        }
        
        return $query->count();
    }

    /**
     * 获取活动抽奖统计
     */
    public static function getActivityDrawStats($activityId, $timeRange = null)
    {
        $query = LotteryDrawRecord::where('activity_id', $activityId);
        
        if ($timeRange) {
            if (isset($timeRange['start'])) {
                $query->where('draw_time', '>=', $timeRange['start']);
            }
            if (isset($timeRange['end'])) {
                $query->where('draw_time', '<=', $timeRange['end']);
            }
        }
        
        return [
            'total_draw' => $query->count(),
            'total_win' => $query->where('is_win', 1)->count(),
            'total_people' => $query->distinct('user_id')->count()
        ];
    }

    /**
     * 获取用户抽奖记录列表
     */
    public static function getUserDrawRecords($userId = 0, $activityId = null,$status = 0, $page = 1, $pageSize = 20)
    {
        $query = LotteryDrawRecord::where('user_id', $userId);
        
        if ($activityId) {
            $query->where('activity_id', $activityId);
        }
        if ($status) {
            $query->where('status', $status);
        }
        
        // 1. 先分页查询抽奖记录
        $records = $query->field('id,activity_id,user_id,prize_id,is_win,trigger_type,trigger_order_id,trigger_amount,
                        draw_time,status')
                        ->order('draw_time', 'desc')
                        ->paginate($pageSize, false, ['page' => $page]);
        
        if (empty($records) || $records->isEmpty()) {
            return $records;
        }
        
        // 2. 收集关联ID
        $activityIds = [];
        $prizeIds = [];
        $drawRecordIds = [];
        
        foreach ($records as $record) {
            $activityIds[] = $record->activity_id;
            $prizeIds[] = $record->prize_id;
            if ($record->is_win) {
                $drawRecordIds[] = $record->id;
            }
        }
        
        // 去重
        $activityIds = array_unique($activityIds);
        $prizeIds = array_unique($prizeIds);
        $drawRecordIds = array_unique($drawRecordIds);
        
        // 3. 批量查询关联数据
        $activities = [];
        if (!empty($activityIds)) {
            $activityList = LotteryActivity::whereIn('id', $activityIds)
                                ->field('id,name,status,lottery_type,lottery_time')
                                ->select();
            foreach ($activityList as $activity) {
                $activities[$activity->id] = $activity;
            }
        }
        
        $prizes = [];
        if (!empty($prizeIds)) {
            $prizeList = LotteryPrize::whereIn('id', $prizeIds)
                            ->field('id,name,image,activity_id,type')
                            ->select();
            foreach ($prizeList as $prize) {
                $prizes[$prize->id] = $prize;
            }
        }
        
        $winRecords = [];
        if (!empty($drawRecordIds)) {
            $winRecordList = LotteryWinRecord::whereIn('draw_record_id', $drawRecordIds)
                                ->field('id,draw_record_id,deliver_status,deliver_time,exchange_code,receiver_name,receiver_mobile,receiver_address,express_company,express_number,exchange_code')
                                ->select();
            foreach ($winRecordList as $winRecord) {
                $winRecords[$winRecord->draw_record_id] = $winRecord;
            }
        }
        
        // 4. 将关联数据作为字段附加到记录中
        foreach ($records as $record) {
            // 附加活动信息字段
            $activity = $activities[$record->activity_id] ?? null;
            $record->activity_name = $activity ? $activity->name : '';
            $record->activity_status = $activity ? $activity->status : 0;
            $record->activity_lottery_type = $activity ? $activity->lottery_type : 0;
            $record->activity_lottery_time = $activity ? $activity->lottery_time : 0;
            
            // 附加奖品信息字段
            $prize = $prizes[$record->prize_id] ?? null;
            $record->prize_name = $prize ? $prize->name : '';
            $record->prize_image = $prize ? cdnurl($prize->image) : '';
            $record->prize_type = $prize ? $prize->type : 0;
            
            // 附加中奖记录信息字段（仅限中奖记录）
            if ($record->is_win) {
                $winRecord = $winRecords[$record->id] ?? null;
                $record->win_record_id = $winRecord ? $winRecord->id : 0;
                $record->deliver_status = $winRecord ? $winRecord->deliver_status : 0;
                $record->deliver_time = $winRecord ? $winRecord->deliver_time : 0;
                $record->exchange_code = $winRecord ? $winRecord->exchange_code : '';
                $record->receiver_name = $winRecord ? $winRecord->receiver_name : '';
                $record->receiver_mobile = $winRecord ? $winRecord->receiver_mobile : '';
                $record->receiver_address = $winRecord ? $winRecord->receiver_address : '';
                $record->express_company = $winRecord ? $winRecord->express_company : '';
                $record->express_number = $winRecord ? $winRecord->express_number : '';
            } else {
                $record->win_record_id = 0;
                $record->deliver_status = 0;
                $record->deliver_time = 0;
                $record->exchange_code = '';
                $record->receiver_name = '';
                $record->receiver_mobile = '';
                $record->receiver_address = '';
                $record->express_company = '';
                $record->express_number = '';
            }
            
            // 添加触发类型文本
            $record->trigger_type_text = LotteryEnum::getTriggerTypeMap($record->trigger_type);
        }
        
        return $records;
    }
    
    /**
     * 获取抽奖记录详情
     * 
     * @param int $drawRecordId 抽奖记录ID
     * @param int $userId 用户ID（可选，用于验证权限）
     * @return LotteryDrawRecord|null 抽奖记录详情，包含关联信息
     */
    public static function getDrawRecordDetail($drawRecordId, $userId = 0)
    {
        // 1. 查询抽奖记录基础信息
        $query = LotteryDrawRecord::where('id', $drawRecordId);
        
        // 如果指定了用户ID，则验证权限
        if ($userId) {
            $query->where('user_id', $userId);
        }
        
        $record = $query->field('id,activity_id,user_id,prize_id,is_win,trigger_type,trigger_order_id,
                        trigger_amount,draw_time,remark,status,createtime')
                       ->find();
        
        if (!$record) {
            return null;
        }
        
        // 2. 查询关联的活动信息
        $activity = LotteryActivity::where('id', $record->activity_id)
                                ->field('id,name,type,status,lottery_type,lottery_time')
                                ->find();
        
        // 3. 查询关联的奖品信息
        $prize = null;
        if ($record->prize_id > 0) {
            $prize = LotteryPrize::where('id', $record->prize_id)
                               ->field('id,name,image,type')
                               ->find();
        }
        
        // 4. 查询关联的中奖记录信息（仅限中奖记录）
        $winRecord = null;
        if ($record->is_win) {
            $winRecord = LotteryWinRecord::where('draw_record_id', $record->id)
                                       ->field('id,draw_record_id,prize_name,prize_type,deliver_status,
                                               deliver_time,receiver_name,receiver_mobile,receiver_address,
                                               express_company,express_number,exchange_code,code_used_time')
                                       ->find();
        }
        
        // 5. 将关联数据作为字段附加到记录中
        // 附加活动信息字段
        $record->activity_name = $activity ? $activity->name : '';
        $record->activity_type = $activity ? $activity->type : 0;
        $record->activity_status = $activity ? $activity->status : 0;
        $record->activity_lottery_type = $activity ? $activity->lottery_type : 0;
        $record->activity_lottery_time = $activity ? $activity->lottery_time : 0;
        
        // 附加奖品信息字段
        $record->prize_name = $prize ? $prize->name : '';
        $record->prize_image = $prize ? cdnurl($prize->image) : '';
        $record->prize_type = $prize ? $prize->type : 0;
        // 附加中奖记录信息字段
        if ($winRecord) {
            $record->win_record_id = $winRecord->id;
            $record->win_prize_name = $winRecord->prize_name;
            $record->win_prize_type = $winRecord->prize_type;
            $record->deliver_status = $winRecord->deliver_status;
            $record->deliver_time = $winRecord->deliver_time;
            $record->receiver_name = $winRecord->receiver_name;
            $record->receiver_mobile = $winRecord->receiver_mobile;
            $record->receiver_address = $winRecord->receiver_address;
            $record->express_company = $winRecord->express_company;
            $record->express_number = $winRecord->express_number;
            $record->exchange_code = $winRecord->exchange_code;
            $record->code_used_time = $winRecord->code_used_time;
        } else {
            $record->win_record_id = 0;
            $record->win_prize_name = '';
            $record->win_prize_type = 0;
            $record->deliver_status = 0;
            $record->deliver_time = 0;
            $record->receiver_name = '';
            $record->receiver_mobile = '';
            $record->receiver_address = '';
            $record->express_company = '';
            $record->express_number = '';
            $record->exchange_code = '';
            $record->code_used_time = 0;           
        }        
       
        return $record;
    }

    /**
     * 检查用户是否已为指定订单抽奖
     */
    public static function hasUserDrawnForOrder($activityId, $userId, $orderId)
    {
        return LotteryDrawRecord::where('activity_id', $activityId)
                                ->where('user_id', $userId)
                                ->where('trigger_order_id', $orderId)
                                ->count() > 0;
    }

    /**
     * 获取用户抽奖历史统计
     */
    public static function getUserDrawHistoryStats($userId)
    {
        $stats = LotteryDrawRecord::where('user_id', $userId)
                                  ->field([
                                      'COUNT(*) as total_draws',
                                      'SUM(is_win) as total_wins',
                                      'COUNT(DISTINCT activity_id) as total_activities'
                                  ])
                                  ->find();

        return [
            'total_draws' => $stats['total_draws'] ?? 0,
            'total_wins' => $stats['total_wins'] ?? 0,
            'total_activities' => $stats['total_activities'] ?? 0,
            'win_rate' => $stats['total_draws'] > 0 ? 
                         round(($stats['total_wins'] / $stats['total_draws']) * 100, 2) : 0
        ];
    }

    /**
     * 获取活动抽奖排行榜
     */
    public static function getActivityDrawRanking($activityId, $limit = 50)
    {
        return LotteryDrawRecord::where('activity_id', $activityId)
                                ->field('user_id, COUNT(*) as draw_count, SUM(is_win) as win_count')
                                ->with('user')
                                ->group('user_id')
                                ->order('draw_count desc, win_count desc')
                                ->limit($limit)
                                ->select();
    }

    /**
     * 获取活动抽奖时间分布统计
     */
    public static function getActivityDrawTimeDistribution($activityId, $dateRange = null)
    {
        $query = LotteryDrawRecord::where('activity_id', $activityId);
        
        if ($dateRange) {
            if (isset($dateRange['start'])) {
                $query->where('draw_time', '>=', $dateRange['start']);
            }
            if (isset($dateRange['end'])) {
                $query->where('draw_time', '<=', $dateRange['end']);
            }
        }
        
        return $query->field('DATE(FROM_UNIXTIME(draw_time)) as date, COUNT(*) as draw_count, SUM(is_win) as win_count')
                     ->group('date')
                     ->order('date asc')
                     ->select();
    }

    // ============ 中奖记录相关方法 ============

    /**
     * 获取中奖记录详情
     */
    public static function getWinRecordDetail($winRecordId, $userId = 0)
    {
        $query = LotteryWinRecord::where('id', $winRecordId);
        if ($userId) {
            $query->where('user_id', $userId);
        }
        return $query->find();
    }

    /**
     * 创建中奖记录
     */
    public static function createWinRecord($drawRecordId, $activityId, $userId, $prizeId, $prizeName, $prizeType, $prizeValue = [])
    {
        $data = [
            'draw_record_id' => $drawRecordId,
            'activity_id' => $activityId,
            'user_id' => $userId,
            'prize_id' => $prizeId,
            'prize_name' => $prizeName,
            'prize_type' => $prizeType,
            'prize_value' => is_array($prizeValue) ? json_encode($prizeValue) : $prizeValue,
            'deliver_status' => LotteryEnum::DELIVER_STATUS_PENDING
        ];
        
        return LotteryWinRecord::create($data);
    }

    /**
     * 标记中奖记录为发放成功
     */
    public static function markWinRecordAsDelivered(LotteryWinRecord $winRecord, $deliverInfo = [])
    {
        $winRecord->deliver_status = LotteryEnum::DELIVER_STATUS_SUCCESS;
        $winRecord->deliver_time = time();
        if ($deliverInfo) {
            $winRecord->deliver_info = json_encode($deliverInfo);
        }
        return $winRecord->save();
    }

    /**
     * 标记中奖记录为发放失败
     */
    public static function markWinRecordAsFailed(LotteryWinRecord $winRecord, $reason = '')
    {
        $winRecord->deliver_status = LotteryEnum::DELIVER_STATUS_FAILED;
        $winRecord->fail_reason = $reason;
        return $winRecord->save();
    }

    /**
     * 设置中奖记录收货地址
     */
    public static function setWinRecordDeliveryAddress(LotteryWinRecord $winRecord, $name, $mobile, $address)
    {
        $winRecord->receiver_name = $name;
        $winRecord->receiver_mobile = $mobile;
        $winRecord->receiver_address = $address;
        return $winRecord->save();
    }
    /**
     * 设置中奖记录快递信息
     */
    public static function setWinRecordExpressInfo(LotteryWinRecord $winRecord, $company, $number)
    {
        $winRecord->express_company = $company;
        $winRecord->express_number = $number;
        return $winRecord->save();
    }

    /**
     * 设置中奖记录兑换码
     */
    public static function setWinRecordExchangeCode(LotteryWinRecord $winRecord, $code)
    {
        $winRecord->exchange_code = $code;
        return $winRecord->save();
    }

    /**
     * 标记中奖记录兑换码已使用
     */
    public static function markWinRecordCodeUsed(LotteryWinRecord $winRecord)
    {
        $winRecord->code_used_time = time();
        return $winRecord->save();
    }

    /**
     * 获取待发放的中奖记录
     */
    public static function getPendingWinRecords($limit = 100)
    {
        return LotteryWinRecord::where('deliver_status', LotteryEnum::DELIVER_STATUS_PENDING)
                               ->order('createtime', 'asc')
                               ->limit($limit)
                               ->select();
    }

    /**
     * 获取用户中奖记录
     */
    public static function getUserWinRecords($userId, $page = 1, $limit = 20)
    {
        return LotteryWinRecord::where('user_id', $userId)
                               ->with(['activity', 'prize'])
                               ->order('createtime', 'desc')
                               ->page($page, $limit)
                               ->select();
    }

    /**
     * 获取活动中奖统计
     */
    public static function getActivityWinStats($activityId)
    {
        return [
            'total_win' => LotteryWinRecord::where('activity_id', $activityId)->count(),
            'delivered' => LotteryWinRecord::where('activity_id', $activityId)
                                           ->where('deliver_status', LotteryEnum::DELIVER_STATUS_SUCCESS)
                                           ->count(),
            'pending' => LotteryWinRecord::where('activity_id', $activityId)
                                         ->where('deliver_status', LotteryEnum::DELIVER_STATUS_PENDING)
                                         ->count(),
            'failed' => LotteryWinRecord::where('activity_id', $activityId)
                                        ->where('deliver_status', LotteryEnum::DELIVER_STATUS_FAILED)
                                        ->count()
        ];
    }

    /**
     * 批量处理待发放的中奖记录
     */
    public static function batchProcessPendingWinRecords($limit = 50)
    {
        $pendingRecords = static::getPendingWinRecords($limit);
        $processedCount = 0;

        foreach ($pendingRecords as $winRecord) {
            try {
                $prize = LotteryPrize::find($winRecord->prize_id);
                if ($prize && $prize->deliver_type == LotteryEnum::DELIVER_TYPE_AUTO) {
                    static::autoDeliverPrize($winRecord, $prize);
                    $processedCount++;
                }
            } catch (Exception $e) {
                static::markWinRecordAsFailed($winRecord, $e->getMessage());
                trace('自动发放奖品失败: ' . $e->getMessage(), 'error');
            }
        }

        return $processedCount;
    }

    /**
     * 手动发放奖品（管理员操作）
     */
    public static function manualDeliverPrize($winRecordId, $deliverInfo = [], $adminId = 0)
    {
        $winRecord = LotteryWinRecord::find($winRecordId);
        if (!$winRecord) {
            throw new Exception('中奖记录不存在');
        }

        if ($winRecord->deliver_status != LotteryEnum::DELIVER_STATUS_PENDING) {
            throw new Exception('该记录已处理，无法重复发放');
        }

        $deliverInfo['admin_id'] = $adminId;
        $deliverInfo['manual_deliver_time'] = time();

        return static::markWinRecordAsDelivered($winRecord, $deliverInfo);
    }

    /**
     * 取消中奖记录
     */
    public static function cancelWinRecord($winRecordId, $reason = '', $adminId = 0)
    {
        $winRecord = LotteryWinRecord::find($winRecordId);
        if (!$winRecord) {
            throw new Exception('中奖记录不存在');
        }

        $winRecord->deliver_status = LotteryEnum::DELIVER_STATUS_CANCELLED;
        $winRecord->fail_reason = $reason;
        $winRecord->cancel_time = time();
        $winRecord->cancel_admin_id = $adminId;

        return $winRecord->save();
    }

    /**
     * 自动发放奖品
     */
    public static function autoDeliverPrize($winRecord, $prize)
    {
        try {
            switch ($prize->type) {
                case LotteryEnum::PRIZE_TYPE_COUPON:
                    static::deliverCoupon($winRecord, $prize);
                    break;
                case LotteryEnum::PRIZE_TYPE_REDPACK:
                    static::deliverRedPacket($winRecord, $prize);
                    break;
                case LotteryEnum::PRIZE_TYPE_CODE:
                    static::deliverExchangeCode($winRecord, $prize);
                    break;
                case LotteryEnum::PRIZE_TYPE_SHOP_GOODS:
                    static::deliverGoods($winRecord, $prize);
                    break;
            }
        } catch (Exception $e) {
            static::markWinRecordAsFailed($winRecord, $e->getMessage());
        }
    }

    /**
     * 发放优惠券
     */
    private static function deliverCoupon($winRecord, $prize)
    {
        // 这里调用优惠券发放接口
        // 示例代码，需要根据实际优惠券系统实现
        static::markWinRecordAsDelivered($winRecord, ['coupon_id' => $prize->coupon_id]);
    }

    /**
     * 发放红包
     */
    private static function deliverRedPacket($winRecord, $prize)
    {
        // 这里调用红包发放接口
        // 示例代码，需要根据实际红包系统实现
        static::markWinRecordAsDelivered($winRecord, ['amount' => $prize->amount]);
    }

    /**
     * 发放兑换码
     */
    private static function deliverExchangeCode($winRecord, $prize)
    {
        $code = LotteryService::getAvailableExchangeCode($prize);
        if ($code) {
            static::setWinRecordExchangeCode($winRecord, $code);
            LotteryService::markExchangeCodeUsed($prize, $code);
            static::markWinRecordAsDelivered($winRecord, ['exchange_code' => $code]);
        } else {
            throw new Exception('兑换码已用完');
        }
    }

    /**
     * 发放商城商品
     */
    private static function deliverGoods($winRecord, $prize)
    {
        // 这里可以自动加入购物车或创建订单
        // 示例代码，需要根据实际商城系统实现
        static::markWinRecordAsDelivered($winRecord, [
            'goods_id' => $prize->goods_id,
            'goods_sku_id' => $prize->goods_sku_id
        ]);
    }
}