<?php
namespace app\api\logic;
use app\common\logic\AccountLogLogic;
use app\common\model\AccountLog;
use app\common\model\Luckdraw;
use app\common\model\LuckdrawRecord;
use app\common\model\User;
use app\common\server\ConfigServer;
use app\common\server\UrlServer;
use think\Db;
use think\helper\Time;
class LuckdrawLogic
{
protected static $error; //错误信息
/**
* Notes: 错误错误信息
* @author 张无忌(2021/1/12 16:01)
* @return mixed
*/
public static function getError()
{
return self::$error;
}
/**
* Notes: 获取抽奖的奖品
* @author 张无忌(2021/1/26 15:12)
* @param $user_id
* @return array
*/
public static function getPrize($user_id)
{
$where = [
['is_delete', '=', 0],
['status', '=', 1]
];
// 获取配置信息
$config = [
'limit' => ConfigServer::get('luckdraw', 'limit', 0),
'status' => ConfigServer::get('luckdraw', 'status', ''),
'rule' => ConfigServer::get('luckdraw', 'rule', 0),
];
// 计算用户剩余抽奖次数
list($startDay, $endDay) = Time::today();
$recordCount = LuckdrawRecord::where([
['user_id', '=', $user_id],
['create_time', '>=', $startDay],
['create_time', '<', $endDay]
])->count('id');
$surplus = $config['limit'] - $recordCount;
$surplus = $surplus <= 0 ? 0 : $surplus;
// 获取历史抽奖记录列表
$record = LuckdrawRecord::order('id', 'desc')
->where('prize_type', '=', 1)
->with('user')
->limit(20)->select();
foreach ($record as &$item) {
$nickname = self::hideStar($item['user']['nickname']);
$item['text'] = '恭喜'.$nickname.'抽中了'.$item['number'].$item['prize_name'];
unset($item['user_id']);
unset($item['prize_id']);
unset($item['prize_type']);
unset($item['prize_name']);
unset($item['prize_image']);
unset($item['number']);
unset($item['user']);
}
$model = new Luckdraw();
$lists = $model->field('id,prize_type,name,image,number')
->order(['sort'=>'desc'])
->where($where)->limit(8)
->select();
foreach ($lists as &$item) {
$item['url'] = $item['image'] ? UrlServer::getFileUrl($item['image']) : '';
if ($item['prize_type'] == 1) {
$item['name'] = $item['number'].$item['name'];
}
unset($item['image']);
unset($item['prize_type']);
}
$prizeData = [];
for ($i=0; $i<8; $i++) {
if (!empty($lists[$i])) {
if ($i == 4) {
$prizeData[] = json_decode("{}");
}
$prizeData[] = $lists[$i];
} else {
$prizeData[] = json_decode("{}");
}
}
return ['config'=>$config, 'surplus'=>$surplus, 'record'=>$record, 'list'=>$prizeData];
}
/**
* Notes: 获取用户抽奖记录
* @param $user_id
* @param $page
* @param $size
* @author 张无忌(2021/1/26 16:13)
* @return array
*/
public static function getUserRecord($user_id, $page, $size)
{
$count = LuckdrawRecord::where(['user_id'=>(int)$user_id])->count();
$record = LuckdrawRecord::order('id', 'desc')
->where(['user_id'=>(int)$user_id])
->order('id', 'desc')
->page($page, $size)
->select();
foreach ($record as &$item) {
$item['prize_image'] = $item['prize_image'] ? UrlServer::getFileUrl($item['prize_image']) : '';
if ($item['prize_type'] === 1) {
$item['prize_name'] = $item['prize_name'].'('.$item['number'].')';
}
}
$more = is_more($count, $page, $size);
return [
'list' => $record,
'count' => $count,
'page_no' => $page,
'page_size' => $size,
'more' => $more
];
}
/**
* Notes: 抽奖逻辑开始
* @author 张无忌(2021/1/26 17:00)
* @param $user_id
* @return array|bool
*/
public static function draw($user_id)
{
if (!$user_id) { static::$error = '请先登录后操作'; return false; }
$status = ConfigServer::get('luckdraw', 'status', 0);
if ($status == 0) {
static::$error = '抽奖活动已结束';
return false;
}
Db::startTrans();
try {
// 取得该用户今天抽奖次数
// 计算用户剩余抽奖次数
list($startDay, $endDay) = Time::today();
$recordCount = LuckdrawRecord::where([
['user_id', '=', $user_id],
['create_time', '>=', $startDay],
['create_time', '<', $endDay]
])->count('id');
$limit = ConfigServer::get('luckdraw', 'limit', 0);
$surplus = $limit - $recordCount;
$surplus = $surplus <= 0 ? 0 : $surplus;
if ($surplus <= 0) {
static::$error = '今天抽奖次数已用完';
return false;
}
// 获取正在进行抽奖的商品 (倒叙获取 8个 与api接口保持一致)
$model = new Luckdraw();
$prize = $model->field('id,prize_type,name,image,number,probability')
->order(['sort'=>'desc'])
->where(['is_delete'=>0, 'status'=>1])->limit(8)
->select()->toArray();
// 获得中奖ID
$rid = self::getPrizeRange($prize);
// 根据ID获得中奖信息
$inPrize = [];
foreach ($prize as $item) {
if ($item['id'] == $rid) {
$inPrize = $item;
break;
}
}
// 记录获得奖品信息
LuckdrawRecord::create([
'user_id' => $user_id,
'prize_id' => $inPrize['id'],
'prize_type' => $inPrize['prize_type'],
'prize_name' => $inPrize['name'],
'prize_image' => $inPrize['image'],
'number' => $inPrize['number'],
'create_time' => time(),
]);
// 分析奖品类型,如(积分, 优惠券等),给用户怎加对应获得的奖品
if ($inPrize['prize_type'] == 1) {
User::where(['id' => $user_id])->setInc('user_integral', $inPrize['number']);
AccountLogLogic::AccountRecord(
$user_id, $inPrize['number'], 1,
AccountLog::luck_draw_integral,
AccountLog::getAcccountDesc(AccountLog::luck_draw_integral));
}
Db::commit();
$text = ['', '恭喜您获得'.$inPrize['number'].'积分', '谢谢惠顾'];
// 返回抽奖结果
return [
'id' => $inPrize['id'],
'name' => $inPrize['name'],
'image' => UrlServer::getFileUrl($inPrize['image']),
'number' => $inPrize['number'],
'text' => $text[$inPrize['prize_type']],
'create_time' => date('Y-m-d H:i:s', time())
];
} catch (\Exception $e) {
Db::rollback();
static::$error = $e->getMessage();
return false;
}
}
/**
* Notes: 取出中奖的奖品
* @param $prize_arr
* @author 张无忌(2021/1/26 18:37)
* @return int|mixed
*/
public static function getPrizeRange($prize_arr)
{
$rid = 0; //中奖的产品ID
$weight = 0; //中奖几率 (所有商品累计)
foreach ($prize_arr as $val) {
$weight += $val['probability']; //概率数组的总概率精度
}
shuffle($prize_arr);
foreach ($prize_arr as $key => $value) {
$randNum = mt_rand(1, $weight);
if ($randNum <= $value['probability']) { // 1 2 3 200
$rid = $value['id'];
break;
} else {
$weight -= $value['probability'];
}
}
return $rid; //中奖项
}
// 截取字符串
private static function hideStar($str)
{
if (mb_strlen($str) >= 3) {
return '**' . mb_substr($str, 2);
}
if (mb_strlen($str) == 1) {
return '**' . $str;
}
if (mb_strlen($str) == 2) {
return '**' . mb_substr($str, 1);
}
return $str;
}
}