Add Wegmans module to fetch item details and prices

Introduce functionality to retrieve item details, including name and price, from Wegmans using a browser-based scraper. This includes a CLI tool to execute searches and robust error handling for URL validation and browser interactions.

sites/wegmans/wegmans.go

@@ -0,0 +1,93 @@
+package wegmans
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"gitea.stevedudenhoeffer.com/steve/go-extractor"
+)
+
+type Config struct {
+}
+
+var DefaultConfig = Config{}
+
+var ErrNilBrowser = errors.New("browser is nil")
+var ErrNilURL = errors.New("url is nil")
+var ErrInvalidURL = errors.New("invalid url")
+
+type Item struct {
+	ID    int
+	Name  string
+	Price float64
+}
+
+func deferClose(c io.Closer) {
+	if c != nil {
+		_ = c.Close()
+	}
+}
+
+func (c Config) GetItemPrice(ctx context.Context, b extractor.Browser, u *url.URL) (Item, error) {
+	if b == nil {
+		return Item{}, ErrNilBrowser
+	}
+
+	if u == nil {
+		return Item{}, ErrNilURL
+	}
+
+	// urls in the format of:
+	// https://shop.wegmans.com/product/24921[/wegmans-frozen-thin-crust-uncured-pepperoni-pizza]
+	// (the slug is optional)
+
+	// get the product ID
+	a := strings.Split(u.Path, "/")
+
+	if len(a) < 3 {
+		return Item{}, ErrInvalidURL
+	}
+
+	id, _ := strconv.Atoi(a[2])
+
+	if id == 0 {
+		return Item{}, ErrInvalidURL
+	}
+
+	doc, err := b.Open(ctx, u.String(), extractor.OpenPageOptions{})
+	defer deferClose(doc)
+
+	if err != nil {
+		return Item{}, err
+	}
+
+	timeout := 15 * time.Second
+	_ = doc.WaitForNetworkIdle(&timeout)
+
+	res := Item{
+		ID: id,
+	}
+
+	titles := doc.Select("h1[data-test]")
+
+	if len(titles) != 0 {
+		res.Name, _ = titles[0].Text()
+	}
+
+	prices := doc.Select("span[data-test=\"amount\"] span:nth-child(1)")
+
+	if len(prices) != 0 {
+		priceStr, _ := prices[0].Text()
+		priceStr = strings.ReplaceAll(priceStr, "$", "")
+		priceStr = strings.ReplaceAll(priceStr, ",", "")
+		price, _ := strconv.ParseFloat(priceStr, 64)
+		res.Price = price
+	}
+
+	return res, nil
+}