<?php

namespace app\admin\controller\lottery;

use app\common\controller\Backend;
use think\Db;
use think\exception\ValidateException;
use think\exception\PDOException;
use Exception;

/**
 * 用户抽奖机会管理
 *
 * @icon fa fa-users
 */
class UserChance extends Backend
{

    /**
     * UserChance模型对象
     * @var \app\admin\model\lottery\UserChance
     */
    protected $model = null;

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\lottery\UserChance;
        
        // 获取枚举值列表
        $this->view->assign("sourceTypeList", $this->model->getSourceTypeList());
        $this->view->assign("statusList", $this->model->getStatusList());
    }

    /**
     * 查看
     */
    public function index()
    {
        //当前是否为关联查询
        $this->relationSearch = true;
        //设置过滤方法
        $this->request->filter(['strip_tags', 'trim']);
        if ($this->request->isAjax()) {
            //如果发送的来源是Selectpage，则转发到Selectpage
            if ($this->request->request('keyField')) {
                return $this->selectpage();
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();
            
            $list = $this->model
                    ->with(['activity', 'user'])
                    ->where($where)
                    ->order($sort, $order)
                    ->paginate($limit);

            foreach ($list as $row) {
                $row->visible(['id','activity_id','user_id','chance_count','used_count','source_type','source_value','expire_time','status','createtime']);
                $row->visible(['activity', 'user']);
                $row->getRelation('activity')->visible(['name']);
                $row->getRelation('user')->visible(['nickname', 'mobile']);
            }
            
            $result = array("total" => $list->total(), "rows" => $list->items());

            return json($result);
        }
        return $this->view->fetch();
    }

    /**
     * 添加
     */
    public function add()
    {
        if ($this->request->isPost()) {
            $params = $this->request->post("row/a");
            if ($params) {
                $params = $this->preExcludeFields($params);
                
                // 处理过期时间
                if (isset($params['expire_time']) && $params['expire_time']) {
                    $params['expire_time'] = strtotime($params['expire_time']);
                }
                
                // 初始化已使用次数
                if (!isset($params['used_count'])) {
                    $params['used_count'] = 0;
                }

                $result = false;
                Db::startTrans();
                try {
                    //是否采用模型验证
                    if ($this->modelValidate) {
                        $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                        $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.add' : $name) : $this->modelValidate;
                        $this->model->validateFailException(true)->validate($validate);
                    }
                    $result = $this->model->allowField(true)->save($params);
                    Db::commit();
                } catch (ValidateException $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                } catch (PDOException $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                } catch (Exception $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                }
                if ($result !== false) {
                    $this->success();
                } else {
                    $this->error(__('No rows were inserted'));
                }
            }
            $this->error(__('Parameter %s can not be empty', ''));
        }
        return $this->view->fetch();
    }

    /**
     * 编辑
     */
    public function edit($ids = null)
    {
        $row = $this->model->get($ids);
        if (!$row) {
            $this->error(__('No Results were found'));
        }
        $adminIds = $this->getDataLimitAdminIds();
        if (is_array($adminIds)) {
            if (!in_array($row[$this->dataLimitField], $adminIds)) {
                $this->error(__('You have no permission'));
            }
        }
        if ($this->request->isPost()) {
            $params = $this->request->post("row/a");
            if ($params) {
                $params = $this->preExcludeFields($params);
                
                // 处理过期时间
                if (isset($params['expire_time']) && $params['expire_time']) {
                    $params['expire_time'] = strtotime($params['expire_time']);
                }

                $result = false;
                Db::startTrans();
                try {
                    //是否采用模型验证
                    if ($this->modelValidate) {
                        $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                        $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.edit' : $name) : $this->modelValidate;
                        $row->validateFailException(true)->validate($validate);
                    }
                    $result = $row->allowField(true)->save($params);
                    Db::commit();
                } catch (ValidateException $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                } catch (PDOException $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                } catch (Exception $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                }
                if ($result !== false) {
                    $this->success();
                } else {
                    $this->error(__('No rows were updated'));
                }
            }
            $this->error(__('Parameter %s can not be empty', ''));
        }
        
        // 处理时间显示
        if ($row->expire_time) {
            $row->expire_time = date('Y-m-d H:i:s', $row->expire_time);
        }
        
        $this->view->assign("row", $row);
        return $this->view->fetch();
    }

    /**
     * 批量发放抽奖机会
     */
    public function batchGrant()
    {
        if ($this->request->isPost()) {
            $activity_id = $this->request->post('activity_id');
            $user_ids = $this->request->post('user_ids');
            $chance_count = $this->request->post('chance_count', 1);
            $source_type = $this->request->post('source_type', 1);
            $expire_time = $this->request->post('expire_time');
            
            if (empty($activity_id) || empty($user_ids)) {
                $this->error('活动ID和用户ID不能为空');
            }
            
            // 处理用户ID数组
            if (is_string($user_ids)) {
                $user_ids = array_filter(explode(',', $user_ids));
            }
            
            $expire_timestamp = $expire_time ? strtotime($expire_time) : null;
            
            $success_count = 0;
            Db::startTrans();
            try {
                foreach ($user_ids as $user_id) {
                    $data = [
                        'activity_id' => $activity_id,
                        'user_id' => $user_id,
                        'chance_count' => $chance_count,
                        'used_count' => 0,
                        'source_type' => $source_type,
                        'source_value' => '管理员批量发放',
                        'expire_time' => $expire_timestamp,
                        'status' => 1,
                        'createtime' => time(),
                        'updatetime' => time()
                    ];
                    
                    // 检查是否已存在
                    $exists = $this->model->where([
                        'activity_id' => $activity_id,
                        'user_id' => $user_id,
                        'source_type' => $source_type
                    ])->find();
                    
                    if ($exists) {
                        // 更新现有记录
                        $exists->chance_count += $chance_count;
                        $exists->save();
                    } else {
                        // 创建新记录
                        $this->model->create($data);
                    }
                    $success_count++;
                }
                Db::commit();
                $this->success("成功为 {$success_count} 个用户发放抽奖机会");
            } catch (Exception $e) {
                Db::rollback();
                $this->error('批量发放失败：' . $e->getMessage());
            }
        }
        
        // 获取活动列表
        $activityModel = new \app\admin\model\lottery\Activity;
        $activities = $activityModel->where('status', 1)->column('name', 'id');
        $this->view->assign('activities', $activities);
        
        return $this->view->fetch();
    }

    /**
     * 用户抽奖机会统计
     */
    public function statistics()
    {
        if ($this->request->isAjax()) {
            $activity_id = $this->request->get('activity_id');
            $where = [];
            if ($activity_id) {
                $where['activity_id'] = $activity_id;
            }
            
            // 统计数据
            $total_users = $this->model->where($where)->count('DISTINCT user_id');
            $total_chances = $this->model->where($where)->sum('chance_count');
            $used_chances = $this->model->where($where)->sum('used_count');
            $remain_chances = $total_chances - $used_chances;
            
            // 按来源类型统计
            $source_stats = $this->model->field('source_type, COUNT(*) as count, SUM(chance_count) as total_chance, SUM(used_count) as used_chance')
                                      ->where($where)
                                      ->group('source_type')
                                      ->select();
            
            $data = [
                'total_users' => $total_users,
                'total_chances' => $total_chances,
                'used_chances' => $used_chances,
                'remain_chances' => $remain_chances,
                'source_stats' => $source_stats
            ];
            
            return json(['code' => 1, 'msg' => 'success', 'data' => $data]);
        }
        
        // 获取活动列表
        $activityModel = new \app\admin\model\lottery\Activity;
        $activities = $activityModel->where('status', 1)->column('name', 'id');
        $this->view->assign('activities', $activities);
        
        return $this->view->fetch();
    }

    /**
     * 清理过期机会
     */
    public function clearExpired()
    {
        $count = $this->model->where('expire_time', '<', time())
                            ->where('expire_time', '>', 0)
                            ->where('status', 1)
                            ->update(['status' => 0]);
        
        $this->success("已清理 {$count} 条过期的抽奖机会");
    }
}