support parsing item page info

internal/interconnect/eway/client.go

@@ -11,12 +11,14 @@ import (
 	"reflect"
 	"strconv"
 	"strings"
+	"time"
 
 	"git.loyso.art/frx/eway/internal/config"
 	"git.loyso.art/frx/eway/internal/crypto"
 	"git.loyso.art/frx/eway/internal/entity"
 
 	"github.com/go-resty/resty/v2"
+	"github.com/gocolly/colly"
 	"github.com/rs/zerolog"
 )
 
@@ -26,6 +28,7 @@ type Client interface {
 		context.Context,
 		GetGoodsNewParams,
 	) (items []entity.GoodsItemRaw, total int, err error)
+	GetProductInfo(context.Context, int64) (entity.GoodsItemInfo, error)
 }
 
 type client struct {
@@ -40,7 +43,6 @@ type Config config.Eway
 func New(ctx context.Context, cfg Config, log zerolog.Logger) (client, error) {
 	httpclient := resty.New().
 		SetDebug(cfg.Debug).
-		// SetCookies(cookies).
 		SetBaseURL("https://eway.elevel.ru/api")
 
 	c := client{
@@ -269,3 +271,64 @@ func (c client) login(ctx context.Context, user, pass string) error {
 
 	return nil
 }
+
+type ProductInfo struct {
+	ImageLinks []string
+	Parameters map[string]string
+}
+
+type parameterSelector struct {
+	Name  string `selector:"div"`
+	Value string `selector:"div.text-right"`
+}
+
+func (c client) GetProductInfo(ctx context.Context, cart int64) (pi entity.GoodsItemInfo, err error) {
+	collector := colly.NewCollector(
+		colly.AllowedDomains("eway.elevel.ru"),
+		colly.AllowURLRevisit(),
+	)
+
+	pi.Parameters = map[string]string{}
+
+	start := time.Now()
+	defer func() {
+		elapsed := time.Since(start).Seconds()
+		c.log.Info().Float64("elapsed", elapsed).Msg("request processed")
+	}()
+
+	collector.OnHTML("body > div.page-container > div.page-content > div.content-wrapper > div.content > div.row > div.col-md-4 > div > div > div:nth-child(6)", func(e *colly.HTMLElement) {
+		e.ForEach("div.display-flex", func(i int, h *colly.HTMLElement) {
+			var s parameterSelector
+			err = h.Unmarshal(&s)
+			if err != nil {
+				c.log.Warn().Err(err).Msg("unable to unmarshal")
+				return
+			}
+
+			if s.Name == "" || s.Value == "" {
+				c.log.Warn().Msg("got empty key or value, skipping")
+				return
+			}
+
+			pi.Parameters[s.Name] = s.Value
+		})
+	})
+	collector.OnHTML("div.gallery_panel", func(h *colly.HTMLElement) {
+		h.ForEach("div.gallery_thumbnail > img", func(i int, h *colly.HTMLElement) {
+			imageURL := h.Attr("src")
+
+			if imageURL == "" {
+				return
+			}
+
+			pi.PhotoURLs = append(pi.PhotoURLs, imageURL)
+		})
+	})
+
+	err = collector.Visit("https://eway.elevel.ru/product/" + strconv.Itoa(int(cart)) + "/")
+	if err != nil {
+		return pi, fmt.Errorf("visiting site: %w", err)
+	}
+
+	return pi, nil
+}