<?php

namespace app\api\controller;

use app\common\controller\Api;
use app\common\Service\Lottery\LotteryService;
use app\common\Service\Lottery\LotteryChanceService;
use app\common\Service\Lottery\LotteryRecordService;
use app\common\Service\Lottery\LotteryActivityService;
use app\common\model\lottery\LotteryActivity;
use app\common\model\lottery\LotteryPrize;
use app\common\model\lottery\LotteryWinRecord;
use app\common\library\Auth;
use app\api\validate\Lottery as LotteryValidate;
use app\common\Enum\ActivityEnum;
use app\common\Enum\LotteryEnum;
use app\common\exception\BusinessException;
use app\common\Enum\ErrorCodeEnum;
use think\Exception;
use app\common\Service\OrderService;
/**
 * 抽奖API控制器
 */
class Lottery extends Api
{
    protected $noNeedLogin = ['activityList', 'activityDetail', 'getPrizes'];
    protected $noNeedRight = ['*'];

    /**
     * 获取抽奖活动列表
     */
    public function getActivityList()
    {
        // 验证参数
        $validate = new LotteryValidate();
        $params = $this->request->param();
        if (!$validate->scene('activityList')->check($params)) {
            $this->error($validate->getError());
        }

        $page   = $params['page'] ?? 1;
        $limit  = $params['pageSize'] ?? 10;
        $status = $params['status'] ?? ActivityEnum::ACTIVITY_STATUS_ONGOING; // 默认只返回进行中的活动

        $where = [];
        if ($status !== '') {
            $where['status'] = $status;
        }

        // 只返回进行中且在时间范围内的活动
        $now = time();
        $where['start_time'] = ['<=', $now];
        $where['end_time'] = ['>=', $now];

        $activities = LotteryActivity::where($where)
                                    ->field('id,name,description,cover_image,type,status,start_time,end_time,lottery_type,guide_image,guide_text,intro_content')
                                    ->order('createtime desc')
                                    ->page($page, $limit)
                                    ->select();

        $list = [];
        foreach ($activities as $activity) {
            $item = $activity->toArray();
            
            // 获取奖品信息
            $prizes = LotteryPrize::where('activity_id', $activity->id)
                                  ->where('status', 1)
                                  ->where('type', '>', 1) // 排除未中奖类型
                                  ->field('id,name,type,image,probability')
                                  ->order('sort_order asc')
                                  ->select();
            $item['prizes'] = $prizes;
            
            // 统计信息
            $item['total_participants'] = LotteryChanceService::getActivityParticipants($activity->id);
            
            $list[] = $item;
        }

        $this->success('获取成功', [
            'list' => $list,
            'total' => LotteryActivity::where($where)->count()
        ]);
    }

    /**
     * 获取活动详情
     */
    public function getActivityDetail()
    {
        // 验证参数
        $validate = new LotteryValidate();
        if (!$validate->scene('activityDetail')->check($this->request->param())) {
            $this->error($validate->getError());
        }

        $activityId = $this->request->param('lottery_id/d');

        $activity = LotteryActivity::find($activityId);
        if (!$activity) {
            throw new BusinessException('活动不存在', ErrorCodeEnum::USER_ACTIVITY_NOT_FOUND);
        }

        $detail = $activity->toArray();

        // 获取奖品列表
        $prizes = LotteryPrize::where('activity_id', $activityId)
                              ->where('status', 1)
                              ->field('id,name,type,image,description,probability,total_stock,remain_stock,win_prompt,sort_order,unlock_people_num')
                              ->order('sort_order asc')
                              ->select();
        
        // 检查奖品是否已解锁（如果开启按人数解锁）
        if ($activity->unlock_by_people) {
            $currentPeopleCount = LotteryChanceService::getActivityParticipants($activityId);
            foreach ($prizes as &$prize) {
                $prize['is_unlocked'] = $prize->isUnlocked($currentPeopleCount);
            }
        } else {
            foreach ($prizes as &$prize) {
                $prize['is_unlocked'] = true;
            }
        }

        $detail['prizes'] = $prizes;

        // 统计信息
        $detail['total_participants'] = LotteryChanceService::getActivityParticipants($activityId);

        // 如果用户已登录，返回用户相关信息
        if (Auth::instance()->isLogin()) {
            $userId = Auth::instance()->id;
            $detail['user_chances'] = LotteryService::getUserChances($activityId, $userId);
            $detail['user_draw_count'] = LotteryRecordService::getUserDrawCount($activityId, $userId);
            $detail['user_win_count'] = LotteryRecordService::getUserWinCount($activityId, $userId);
        }

        $this->success('获取成功', $detail);
    }

    /**
     * 执行抽奖
     */
    public function draw()
    {
        // 验证参数
        $validate = new LotteryValidate();
        if (!$validate->scene('draw')->check($this->request->param())) {
            $this->error($validate->getError());
        }
        $activityId = $this->request->post('lottery_id/d');
        $userId = $this->auth->id;
        $result = LotteryService::drawLottery($activityId, $userId);
        $this->success('抽奖成功', $result);
    }

    /**
     * 获取用户抽奖机会
     */
    public function getUserChances()
    {
        // 验证参数
        $validate = new LotteryValidate();
        if (!$validate->scene('getUserChances')->check($this->request->param())) {
            $this->error($validate->getError());
        }

        $activityId = $this->request->post('lottery_id/d');

        $userId = $this->auth->id;

        $chances = LotteryChanceService::getUserChanceDetail($activityId, $userId);
        $this->success('获取成功', $chances);
    }

    /**
     * 获取用户抽奖记录
     */
    public function getDrawRecords()
    {
        // 验证参数（activity_id可选）
        $params = $this->request->param();
        $validate = new LotteryValidate();
        
        // 如果有activity_id参数，则把它映射为activity_id_optional进行验证
        $validateParams = $params;
        if (isset($params['lottery_id'])) {
            $validateParams['activity_id_optional'] = $params['lottery_id'];
            unset($validateParams['lottery_id']);
        }
        if (isset($params['status'])) {
            $validateParams['record_status'] = $params['status'];
            unset($validateParams['status']);
        }        
        if (!$validate->scene('getDrawRecords')->check($validateParams)) {
            $this->error($validate->getError());
        }

        $activityId = $this->request->post('lottery_id/d');
        $page = $this->request->param('page/d', 1);
        $pageSize = $this->request->param('pageSize/d', 10);
        $status =  $params['status'] ?? 1;
        $userId = $this->auth->id;
        
        $records = LotteryRecordService::getUserDrawRecords($userId, $activityId,  $status, $page, $pageSize);
        $this->success('获取成功',  $records);
    }

    /**
     * 获取抽奖记录详情
     */
    public function getDrawRecordDetail()
    {
        $drawRecordId = $this->request->get('draw_record_id/d');
        $validate = new LotteryValidate();
        if (!$validate->scene('getDrawRecordDetail')->check(['draw_record_id' => $drawRecordId])) {
            $this->error($validate->getError());
        }
        $userId = $this->auth->id;  
        $drawRecord = LotteryRecordService::getDrawRecordDetail($drawRecordId, $userId);
        $this->success('获取成功', $drawRecord);
    }

    /**
     * 获取用户中奖记录
     */
    public function getWinRecords()
    {
        // 验证参数
        $validate = new LotteryValidate();
        if (!$validate->scene('getWinRecords')->check($this->request->param())) {
            $this->error($validate->getError());
        }

        $page = $this->request->param('page/d', 1);
        $pageSize = $this->request->param('pageSize/d', 20);

        $userId = $this->auth->id;

        $records = LotteryRecordService::getUserWinRecords($userId, $page, $pageSize);

        $list = [];
        foreach ($records as $record) {
            $item = [
                'id' => $record->id,
                'activity_id' => $record->activity_id,
                'activity_name' => $record->activity->name ?? '',
                'prize_id' => $record->prize_id,
                'prize_name' => $record->prize_name,
                'prize_type' => $record->prize_type,
                'deliver_status' => $record->deliver_status,
                'deliver_status_text' => $record->deliver_status_text,
                'deliver_time' => $record->deliver_time,
                'exchange_code' => $record->exchange_code,
                'createtime' => $record->createtime
            ];

            // 根据奖品类型返回特定信息
            $prizeValue = $record->prize_value_data;
            switch ($record->prize_type) {
                case LotteryEnum::PRIZE_TYPE_REDPACK:
                    $item['amount'] = $prizeValue['amount'] ?? 0;
                    break;
                case LotteryEnum::PRIZE_TYPE_COUPON:
                    $item['coupon_id'] = $prizeValue['coupon_id'] ?? 0;
                    break;
                case LotteryEnum::PRIZE_TYPE_GOODS:
                    $item['goods_id'] = $prizeValue['goods_id'] ?? 0;
                    $item['goods_sku_id'] = $prizeValue['goods_sku_id'] ?? 0;
                    break;
            }
            // 奖品图片
            $item['prize_image'] = cdnurl($item['prize_image']);
            $list[] = $item;
        }

        $this->success('获取成功', [
            'list' => $list,
            'total' => LotteryRecordService::getUserWinRecords($userId, 1, 1)->count()
        ]);
    }

    /**
     * 设置中奖记录收货地址
     */
    public function setWinRecordAddress()
    {
        // 验证参数
        $validate = new LotteryValidate();
        if (!$validate->scene('setWinRecordAddress')->check($this->request->param())) {
            $this->error($validate->getError());
        }

        $winRecordId = $this->request->param('win_record_id/d');
        $receiverName = $this->request->param('receiver_name');
        $receiverMobile = $this->request->param('receiver_mobile');
        $receiverAddress = $this->request->param('receiver_address');

        $userId = $this->auth->id;

        $winRecord = LotteryWinRecord::where('id', $winRecordId)
                                     ->where('user_id', $userId)
                                     ->find();
        if (!$winRecord) {
            $this->error('中奖记录不存在');
        }

        if ($winRecord->deliver_status != LotteryEnum::DELIVER_STATUS_PENDING) {
            $this->error('该奖品已处理，无法修改地址');
        }

        try {
            $winRecord->setDeliveryAddress($receiverName, $receiverMobile, $receiverAddress);
            $this->success('设置成功');
        } catch (Exception $e) {
            $this->error('设置失败：' . $e->getMessage());
        }
    }

    /**
     * 获取活动排行榜（中奖次数）
     */
    public function getRanking()
    {
        // 验证参数
        $validate = new LotteryValidate();
        if (!$validate->scene('getRanking')->check($this->request->param())) {
            $this->error($validate->getError());
        }

        $activityId = $this->request->param('activity_id/d');
        $page = $this->request->param('page/d', 1);
        $limit = $this->request->param('limit/d', 50);

        // 统计用户中奖次数
        $ranking = LotteryRecordService::getActivityDrawRanking($activityId, $limit);

        $list = [];
        $rank = ($page - 1) * $limit + 1;
        foreach ($ranking as $item) {
            $list[] = [
                'rank' => $rank++,
                'user_id' => $item->user_id,
                'nickname' => $item->user->nickname ?? '匿名用户',
                'avatar' => $item->user->avatar ?? '',
                'win_count' => $item->win_count ?? 0
            ];
        }

        $this->success('获取成功', $list);
    }

    /**
     * 获取奖品列表
     */
    public function getPrizes()
    {
        // 验证参数
        $validate = new LotteryValidate();
        $params = $this->request->param();
        if (!$validate->scene('getPrizes')->check($params)) {
            $this->error($validate->getError());
        }

        $activityId = $params['lottery_id'] ?? 0;
        $page       = $params['page'] ?? 1;
        $pageSize   = $params['pageSize'] ?? 10;
        $type       = $params['type'] ?? null; // 奖品类型筛选，支持逗号分隔字符串

        // 调用服务层方法
        $paginate = LotteryActivityService::getPrizes($activityId, $page, $pageSize, $type);
        
        // 处理图片 地址
        foreach ($paginate as $item) {
            $item['image'] = $item['image'] ? cdnurl($item['image']) : '';
        }
        $this->success('获取成功', $paginate);
    }

    //  订单完成后 分发抽奖机会 
    public function getLotteryChanceByOrder()
    {
        $orderId = $this->request->post('order_id/d');
        //  验证器
        $validate = new LotteryValidate();
        if (!$validate->scene('getLotteryChanceByOrder')->check(['order_id' => $orderId])) {
            $this->error($validate->getError());
        }

        $userId = $this->auth->id;
        $orderInfo = OrderService::getDetail($orderId, $userId);

        if(!$orderInfo){
            $this->error('订单不存在');
        }
        // 是否是已支付
        if(!$orderInfo->isPayStatus()){
            $this->error('订单未支付');
        }

        // 构造数据
        $goodsList = $orderInfo->orderGoods;
        $goodsList = collection($goodsList)->toArray();
        $goodsList = array_map(function($item){
            return [
                'goods_id' => $item['goods_id'],
            ];
        }, $goodsList);
        $orderInfo = [
            'id' => $orderInfo->id,
            'total_amount' => $orderInfo->amount,
            'goods' => $goodsList            
        ];
        // 获取当前正在进行的单个抽奖活动
        $activity = LotteryActivityService::getCurrentRunningActivity();
            
        // 如果没有正在进行的活动，返回null
        if (!$activity) {
            $this->success('获取成功', null);
        }
        //  用户 订单 是否已经分发过 抽奖机会
        $isGranted = LotteryChanceService::isGrantedChanceForOrder($orderInfo, $userId);
        if($isGranted){
            //  直接返回 所剩 机会
            $userChance = LotteryChanceService::getUserChance($activity->id, $userId);
            $arrReturn = [
                'lottery_id' => $activity->id,
                'lottery_type' => $activity->lottery_type,
                'lottery_name' => $activity->name,
                'chances' => $userChance->total_chances,
            ];
            $this->success('获取成功', $arrReturn);
        }
        $grantedChances = LotteryChanceService::checkAndGrantChanceForOrderOne($activity, $orderInfo, $userId);
        $this->success('获取成功', $grantedChances);
    }
}