343 lines
9.9 KiB
PHP
343 lines
9.9 KiB
PHP
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<?php
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/**
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*
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* platform programe
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* @category Trendible
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* @package ChangeMe
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* @subpackage ChangeMe
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* @author shaun.song ( GTalk/Email: songsj125@gmail.com | MSN: ssj125@hotmail.com )
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* @since 2010-6-29
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* @version SVN: $Id$
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*/
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class Com_Coupon
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{
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/**
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* 错误信息
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* @var array
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* 1001 已经抽取过一个，不可以重复抽取
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* 1002 无库存
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* 1003 code已经被领取过
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* 1004 coupon取不到或coupon已被领取
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* 1005 系统错误
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*/
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private static $_ERR = array(
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1001 => 'you have get,can\'t get agin',
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1002 => 'Not in stock',
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1003 => 'operation fail',
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1004 => 'coupon Invalid',
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1005 => 'system error',
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1006 => 'category error',
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1007 => 'category not exists');
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private static $res = array(
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'status' => 0,
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'error' => null,
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'data' => null);
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private static $_allowUniquefields = array(
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'useid',
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'ip');
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private static $endnodecategory;
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/**
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* 根据category末接点获取coupon
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* 返回数据示例
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* Array
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* (
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* [status] => 0
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* [error] =>
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* [data] => Array
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* (
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* [code] => 228X8V75
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* [categoryid] => 2
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* [userid] => 2
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* [cycle] => 0
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* [ctime] => 2010-07-06 10:06:47
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* [ip] => 127.0.0.1
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* )
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*
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* )
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*
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* @param integer $categoryid 分类ID 这里的分类是指 末梢分类 ，即分配过coupon的分类
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* @param integer $userid 用户ID
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* @param integer $duplicate 是否可以重复抽取
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* @param string $uniquefield uniq字段
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* @param string $ip 访问者的IP
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* @return array
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*/
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public static function getCoupon($categoryid = 0, $userid = 0, $duplicate = 1, $uniquefield = '', $ip = '')
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{
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if ($ip == '') {
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$ip = Zeed_Util::clientIP();
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}
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if (! $duplicate && ! self::checkDuplicate($categoryid, $uniquefield, array(
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'userid' => $userid,
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'ip' => $ip))) {
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return self::$res;
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}
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/**
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* 对coupon_category进行行锁，更新categoryautoid=categoryautoid+1并取出categoryautoid
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* 根据categoryautoid、categoryid取得coupon_categorylink的值
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*/
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if (! ($linkInfo = self::getCategoryLink($categoryid))) {
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return self::$res;
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}
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Com_Model_Coupon::instance()->beginTransaction();
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try {
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if (! ($couponinfo = self::getCouponInfo($linkInfo['codeid']))) {
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Com_Model_Coupon::instance()->rollBack();
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return self::$res;
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}
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/**
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* 检查code已经被领取过
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*/
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if (! self::checkHistory($couponinfo['code'])) {
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Com_Model_Coupon::instance()->rollBack();
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return self::$res;
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}
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$set = array(
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'status' => 2,
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'mtime' => date('Y-m-d H:i:s'));
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Com_Model_Coupon::instance()->updateCouponById($couponinfo['id'], $set);
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$history = array(
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'code' => $couponinfo['code'],
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'categoryid' => $categoryid,
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'userid' => $userid,
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'cycle' => $linkInfo['cycle'],
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'ctime' => date('Y-m-d H:i:s'),
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'ip' => $ip);
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Com_Model_Coupon::instance()->addCouponHistory($history);
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Com_Model_Coupon::instance()->commit();
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self::$res['data'] = $history;
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self::$res['data']['serialnumber'] = $couponinfo['serialnumber'];
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return self::$res;
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} catch (Exception $e) {
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Com_Model_Coupon::instance()->rollBack();
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self::$res['status'] = 1005;
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self::$res['error'] = self::$_ERR[1005];
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return self::$res;
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}
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}
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/**
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* 根据分类中的活动根节点，来获取coupon
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*
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*
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* @param integer $categoryid
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* @param integer $userid
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* @return array
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*/
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public static function get($categoryid, $userid)
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{
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$category = Com_Model_Coupon::instance()->getCategoryById($categoryid);
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/**
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*验证分类是否存在
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*/
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if (! (! empty($category))) {
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self::$res['status'] = 1006;
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self::$res['error'] = self::$_ERR[1006];
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return self::$res;
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}
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/**
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* 验证活动是否有效
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*/
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$date = date('Y-m-d H:i:s');
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if (! ($date >= $category['stime'] && $date <= $category['etime'])) {
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self::$res['status'] = 1007;
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self::$res['error'] = self::$_ERR[1007];
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return self::$res;
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}
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/**
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* 获取末梢分类
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*/
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self::getEndnodeCategory($categoryid);
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if(empty(self::$endnodecategory))
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{
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self::$res['status'] = 1002;
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self::$res['error'] = self::$_ERR[1002];
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return self::$res;
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}
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/**
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* 返回Coupon
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*/
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return self::getCoupon(self::$endnodecategory['categoryid'],$userid,self::$endnodecategory['duplicate'],self::$endnodecategory['uniquefield']);
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}
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/**
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* 当不可重复领取，检查是否已经领取过
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*
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* @param integer $categoryid
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* @param string $uniquefield(暂时仅支持ip,userid)
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* @param array $uniquevalue
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* @return boolen
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*/
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private static function checkDuplicate($categoryid, $uniquefield, $uniquevalue)
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{
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$uniquefield = $uniquefield != '' && in_array($uniquefield, self::$_allowUniquefields) ? $uniquefield : 'userid';
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$where = array(
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'categoryid' => $categoryid);
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$where[$uniquefield] = $uniquevalue[$uniquefield];
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$rows = Com_Model_Coupon::instance()->getCouponHistoryByWhere($where);
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if (empty($rows)) {
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return true;
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} else {
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self::$res['status'] = 1001;
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self::$res['error'] = self::$_ERR[1001];
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return false;
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}
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}
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/**
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* 检查code是否已被领取过
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*
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* @param string $code
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* @return boolen
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*/
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private static function checkHistory($code)
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{
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$rows = Com_Model_Coupon::instance()->getCouponHistoryByWhere(array(
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'code' => $code));
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if (empty($rows)) {
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return true;
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} else {
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self::$res['status'] = 1003;
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self::$res['error'] = self::$_ERR[1003];
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return false;
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}
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}
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/**
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* 获取coupon
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*
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* @param integer $id
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* @return array|boolen
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*/
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private static function getCouponInfo($id)
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{
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$row = Com_Model_Coupon::instance()->getCouponInfo($id);
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if (! empty($row) && $row['status'] == 0) {
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return $row;
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}
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self::$res['status'] = 1004;
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self::$res['error'] = self::$_ERR[1004];
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return false;
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}
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/**
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* 获取categoryautoid
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*
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* @param ineteger $categoryid
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* @return boolen|integer
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*/
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private static function getCategoryAutoId($categoryid = 0)
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{
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$autoid = Com_Model_Coupon::instance()->getCategoryAutoId($categoryid);
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if (! $autoid) {
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return false;
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}
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return $autoid;
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}
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/**
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* 获取categorylink
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*
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* @param integer $categoryautoid
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* @return boolen|array
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*/
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private static function getCategoryLink($categoryid = 0)
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{
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$autoid = self::getCategoryAutoId($categoryid);
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if ($autoid) {
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$linkInfo = Com_Model_Coupon::instance()->getLinkByAutoId($autoid, $categoryid);
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if (! empty($linkInfo)) {
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return $linkInfo;
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}
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}
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self::$res['status'] = 1002;
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self::$res['error'] = self::$_ERR[1002];
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return false;
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}
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/**
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* 获取当前活动的末接点分类
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*
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* @param integer $categoryid
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* @return void
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*/
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private static function getEndnodeCategory($categoryid)
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{
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$subcategories = Com_Model_Coupon::instance()->getCategoriesByWhere(" parentid = '$categoryid' AND amount > currentid");
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if (! empty($subcategories)) {
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$list = array();
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$weight = array();
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foreach ($subcategories as $item) {
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$list[$item['categoryid']] = $item;
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$weight[$item['categoryid']] = $item['weight'];
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}
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$roll = self::roll($weight);
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$subcategory = $list[$roll];
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if (! empty($subcategory)) {
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if ($subcategory['endnode'] == 1) {
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self::$endnodecategory = $subcategory;
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} else {
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self::getEndnodeCategory($subcategory['categoryid']);
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}
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}
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}
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}
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/**
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* 根据权重 roll
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*
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* @param array $weight
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* @return integer
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*/
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private static function roll($weight = array())
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{
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$roll = rand(1, array_sum($weight));
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$temp = 0;
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$rollnum = 0;
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foreach ($weight as $k => $v) {
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$min = $temp;
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$temp += $v;
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$max = $temp;
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if ($roll > $min && $roll <= $max) {
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$rollnum = $k;
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break;
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}
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}
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return $rollnum;
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}
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}
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// End ^ LF ^ UTF-8
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