generated from kedaya_haitao/template
87 lines
2.3 KiB
Go
87 lines
2.3 KiB
Go
package rate
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import (
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"context"
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"fmt"
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"strconv"
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"gitea.timerzz.com/kedaya_haitao/common/pkg/subscribe"
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"gitea.timerzz.com/kedaya_haitao/common/structs/storage"
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"gitea.timerzz.com/kedaya_haitao/common/structs/utils"
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"github.com/golang/glog"
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"github.com/redis/go-redis/v9"
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)
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type Controller struct {
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ctx context.Context
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storage *storage.Storage
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subscribe *subscribe.Server
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}
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func NewController(ctx context.Context, storage *storage.Storage, rdb *redis.Client) *Controller {
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return &Controller{
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storage: storage,
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subscribe: subscribe.NewServer(ctx, rdb),
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}
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}
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func (c *Controller) Run() error {
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c.subscribe.SetErrorHandle(func(err error) {
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glog.Error(err)
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})
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if err := c.subscribe.Subscribe(utils.ProfitRate_Channel, c.Rate); err != nil {
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return fmt.Errorf("订阅失败：%v", err)
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}
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c.subscribe.Run()
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return nil
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}
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// 处理接受到的信息
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func (c *Controller) Rate(ctx context.Context, idString string) error {
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i, _ := strconv.Atoi(idString)
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if i <= 0 {
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return fmt.Errorf("接收到的id不正确：%s", idString)
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}
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id := uint(i)
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article, err := c.storage.Article().Get(storage.NewGetArticleQuery().SetID(id))
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if err != nil {
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return fmt.Errorf("获取商品 id: %d， 失败：%v", id, err)
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}
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// 拿到最低成本价和最低售价
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var cost, sell float64
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//检查能不能购买，只要有一个供应商能买，就认为能购买
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var available bool
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for _, provider := range article.Providers {
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final := provider.Cost.FinalPrice
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if final > 0 && (final < cost || cost == 0) && !provider.Exclude {
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cost = final
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}
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available = available || provider.Available
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}
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for _, seller := range article.Sellers {
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final := seller.Sell.FinalPrice
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if final > 0 && (final < sell || sell == 0) && !seller.Exclude {
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sell = final
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}
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}
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// 成本和售价没有改动，不保存，直接返回
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if cost == article.CostPrice && sell == article.SellPrice {
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return nil
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}
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// 到这里说明成本和售价有变动
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article.CostPrice = Decimal(cost)
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article.SellPrice = Decimal(sell)
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if cost > 0 {
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article.Rate = Decimal((article.SellPrice - article.CostPrice) * 100 / article.CostPrice)
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}
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// 保存更新
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return c.storage.Article().Update(article, "cost_price", "sell_price", "available", "updated_at", "rate")
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}
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func Decimal(num float64) float64 {
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num, _ = strconv.ParseFloat(fmt.Sprintf("%.2f", num), 64)
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return num
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}
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