126 lines
3.4 KiB
Go
126 lines
3.4 KiB
Go
package spider
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import (
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"context"
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"fmt"
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"gitea.timerzz.com/kedaya_haitao/cn-coach-spider/pkg/options"
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"gitea.timerzz.com/kedaya_haitao/common/model/product"
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coach_client "gitea.timerzz.com/kedaya_haitao/common/pkg/coach-client"
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"github.com/golang/glog"
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"github.com/samber/lo"
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"gorm.io/gorm"
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"gorm.io/gorm/clause"
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"time"
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)
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type Controller struct {
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ctx context.Context
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client *coach_client.CN
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db *gorm.DB
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interval time.Duration
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website productv1.Website
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linkPrefix string
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pid string
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calculates []productv1.CalculateProcess
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}
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func NewController(client *coach_client.CN, db *gorm.DB, interval time.Duration, shopType string) *Controller {
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ctl := &Controller{
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client: client,
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db: db,
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interval: interval,
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website: productv1.WebSite_CN_Coach,
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linkPrefix: "https://www.coach.com.cn/products/",
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pid: CNCoachPid,
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}
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if shopType == options.ShopType_outlet {
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ctl.website = productv1.WebSite_CN_Coach_Outlet
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ctl.linkPrefix = "https://www.coach.com.cn/outlet/products/"
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ctl.pid = CNCoachOutletPid
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}
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ctl.AutoMigrate()
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ctl.LoadCalculateProcess()
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return ctl
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}
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func (c *Controller) AutoMigrate() {
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if err := c.db.AutoMigrate(&productv1.Product{}, &productv1.HistoryPrice{}); err != nil {
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panic(err)
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}
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}
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func (c *Controller) Run(ctx context.Context) {
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c.ctx = ctx
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ticker := time.NewTicker(c.interval)
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defer ticker.Stop()
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if err := c.Crawl(); err != nil {
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glog.Error(err.Error())
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} else {
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glog.Info("抓取信息成功")
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}
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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if err := c.Crawl(); err != nil {
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glog.Error(err.Error())
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} else {
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glog.Info("抓取信息成功")
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}
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}
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}
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}
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func (c *Controller) Crawl() error {
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glog.Info("开始抓取信息")
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for page, totalPage := 1, 1; page <= totalPage; page++ {
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resp, err := c.client.ListItems(c.ctx, page, 50)
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if err != nil {
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return fmt.Errorf("访问coach第%d页失败: %w", page, err)
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}
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totalPage = resp.TotalPages
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if err = c.saveRespData(resp.Items); err != nil {
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return fmt.Errorf("保存第%d页数据失败: %w", page, err)
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}
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glog.Infof("第%d页数据保存成功", page)
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}
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return nil
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}
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func (c *Controller) saveRespData(list []coach_client.CNItem) error {
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var products = make([]productv1.Product, 0, len(list))
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for _, item := range list {
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var savedProduct productv1.Product
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c.db.Model(&savedProduct).Where("pid = ?", item.Code).Select("dw_price").Scan(&savedProduct)
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p := productv1.Product{
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UpdatedAt: time.Now(),
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Name: item.Title,
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Pid: item.Code,
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Link: fmt.Sprintf("%s%s", c.linkPrefix, item.Code),
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Image: item.Images[0].Imgs[0].Img,
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Orderable: item.Stock > 0,
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DiscPercent: 100 - int(item.DiscountRateMin*100),
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OriginalPrice: item.SkuMaxPrice,
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Website: c.website,
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DWPrice: savedProduct.DWPrice,
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}
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var calculate []productv1.CalculateProcess
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c.db.Model(&productv1.CalculateProcess{}).Find(&calculate, "pid = ? AND website = ?", p.Pid, c.website)
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p.CalCNY(append(calculate, c.calculates...))
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products = append(products, p)
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}
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// 去重
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products = lo.UniqBy(products, func(p productv1.Product) string {
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return p.Pid
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})
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return c.db.Clauses(clause.OnConflict{
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Columns: []clause.Column{{Name: "pid"}},
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DoUpdates: clause.AssignmentColumns([]string{"name", "link", "orderable", "original_price", "rate", "price_status", "disc_percent", "updated_at"}),
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}).Create(products).Error
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}
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