us-coach-spider/product/controller.go

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package product
import (
"context"
"fmt"
"gitea.timerzz.com/kedaya_haitao/coach-spider/database"
coach_client "gitea.timerzz.com/kedaya_haitao/coach-spider/pkg/coach-client"
"github.com/samber/lo"
"gorm.io/gorm"
"gorm.io/gorm/clause"
"log/slog"
"time"
)
type Controller struct {
ctx context.Context
client *coach_client.Client
updateTime time.Time // 上次抓取时间
db *gorm.DB
Option
}
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func NewController(client *coach_client.Client, db *gorm.DB) *Controller {
ctl := &Controller{
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client: client,
db: db,
}
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ctl.AutoMigrate()
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ctl.LoadOption()
return ctl
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}
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func (c *Controller) AutoMigrate() {
if err := c.db.AutoMigrate(&database.Product{}, &database.HistoryPrice{}, &Option{}); err != nil {
panic(err)
}
}
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func (c *Controller) Run(ctx context.Context) {
c.ctx = ctx
ticker := time.NewTicker(c.Interval)
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if err := c.Crawl(); err != nil {
slog.Error(err.Error())
} else {
slog.Info("抓取信息成功")
c.updateTime = time.Now()
}
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for {
select {
case <-ctx.Done():
return
case <-ticker.C:
if err := c.Crawl(); err != nil {
slog.Error(err.Error())
} else {
slog.Info("抓取信息成功")
c.updateTime = time.Now()
}
}
}
}
func (c *Controller) Crawl() error {
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slog.Info("开始抓取信息")
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for page, totalPage := 1, -1; page <= totalPage || totalPage == -1; page++ {
resp, err := c.client.ViewAllBags(c.ctx, page)
if err != nil {
return fmt.Errorf("访问coach第%d页失败: %w", page, err)
}
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totalPage = resp.PageData.TotalPages
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if err = c.saveRespData(resp.PageData.Products); err != nil {
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return fmt.Errorf("保存第%d页数据失败: %w", page, err)
}
}
return nil
}
func (c *Controller) saveRespData(list []coach_client.Product) error {
var products = make([]database.Product, 0, len(list))
for _, resp := range list {
for _, color := range resp.Colors {
price, _ := lo.Find(resp.VariantsOnSale, func(item coach_client.Variant) bool {
return item.Id == color.VgId
})
products = append(products, database.Product{
Name: resp.Name,
Pid: color.VgId,
Color: color.Text,
Link: fmt.Sprintf("%s/%s", "https://www.coachoutlet.com", color.Url),
Image: color.Media.Thumbnail.Src,
Orderable: price.OnSale,
USPrice: price.Price.Sales.Value,
Freight: c.Freight,
ExchangeRate: c.ExchangeRate,
})
}
}
// 去重
products = lo.UniqBy(products, func(p database.Product) string {
return p.Pid
})
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return c.db.Clauses(clause.OnConflict{
Columns: []clause.Column{{Name: "pid"}},
DoUpdates: clause.AssignmentColumns([]string{"name", "color", "link", "orderable", "us_price", "cny_price", "cal_mark", "freight", "rate"}),
}).Create(products).Error
}