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132 lines
4.4 KiB
132 lines
4.4 KiB
<?php
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namespace addons\shopro\library\activity\provider;
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/**
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* 满额折扣
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*/
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class FullDiscount extends Base
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{
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protected $rules = [
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"type" => "require",
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"discounts" => "require|array"
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];
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protected $message = [
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"discounts.require" => '请填写优惠规则',
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"discounts.array" => '请填写优惠规则',
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];
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protected $default = [
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"type" => "money", // money=满足金额|num=满足件数
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"discounts" => []
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];
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public function check($params, $activity_id = 0)
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{
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// 数据验证
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$params = parent::check($params);
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// 检测活动之间是否存在冲突
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$this->checkActivityConflict($params, $params['goods_list'], $activity_id);
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return $params;
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}
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public function formatTags($rules, $type)
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{
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$tags = [];
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$discounts = $rules['discounts'] ?? [];
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foreach ($discounts as $discount) {
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$tags[] = $this->formatTag([
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'type' => $rules['type'],
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'full' => $discount['full'],
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'discount' => $discount['discount']
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]);
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}
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return array_values(array_filter($tags));
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}
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/**
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* 格式化 discount 折扣为具体优惠标签
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*
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* @param string $type
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* @param array $discountData
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* @return string
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*/
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public function formatTag($discountData)
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{
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$tag = '满' . $discountData['full'] . ($discountData['type'] == 'money' ? '元' : '件');
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$tag .= $discountData['discount'] . '折';
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return $tag;
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}
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public function formatTexts($rules, $type)
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{
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$texts = [];
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$discounts = $rules['discounts'] ?? [];
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foreach ($discounts as $discount) {
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$text = '满' . $discount['full'] . ($rules['type'] == 'money' ? '元' : '件');
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$text .= '，商品总价打' . $discount['discount'] . '折';
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$texts[] = $text;
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}
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return array_values(array_filter($texts));
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}
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public function getPromoInfo($promo, $data = [])
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{
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extract($this->promoGoodsData($promo));
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$rules = $promo['rules'];
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// 是按金额，还是按件数比较
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$compareif = $rules['type'] == 'num' ? 'promo_goods_num' : 'promo_goods_amount';
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// 将规则按照从大到校排列,优先比较是否满足最大规则
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$rulesDiscounts = isset($rules['discounts']) && $rules['discounts'] ? array_reverse($rules['discounts']) : []; // 数组反转
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// 满减， 满折多个规则从大到小匹配最优惠
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foreach ($rulesDiscounts as $d) {
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if (${$compareif} < $d['full']) {
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// 不满足条件，接着循环下个规则
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continue;
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}
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$dis = bcdiv($d['discount'], '10', 3); // 保留三位小数，转化折扣
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$dis = $dis > 1 ? 1 : ($dis < 0 ? 0 : $dis); // 定义边界 0 - 1
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$promo_dis = 1 - $dis;
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$current_promo_discount_money = bcmul($promo_goods_amount, (string)$promo_dis, 3);
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$current_promo_discount_money = number_format((float)$current_promo_discount_money, 2, '.', ''); // 计算折扣金额,四舍五入
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// 记录该活动的一些统计信息
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$promo_discount_info = [
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'activity_id' => $promo['id'], // 活动id
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'activity_title' => $promo['title'], // 活动标题
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'activity_type' => $promo['type'], // 活动类型
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'activity_type_text' => $promo['type_text'], // 活动类型中文
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'promo_discount_money' => $current_promo_discount_money, // 优惠金额
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'promo_goods_amount' => $promo_goods_amount, // 当前活动商品总金额
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'rule_type' => $rules['type'], // 满多少元|还是满多少件
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'discount_rule' => $d, // 满足的那条规则
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'goods_ids' => $goodsIds // 这个活动包含的这次购买的商品
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];
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break;
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}
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return $promo_discount_info ?? null;
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}
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} |