98 lines
2.3 KiB
Go
98 lines
2.3 KiB
Go
package main
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import (
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"context"
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"fmt"
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"net/url"
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"strings"
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"time"
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"github.com/PuerkitoBio/goquery"
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"github.com/chromedp/chromedp"
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)
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func PerformGoogleTextSearch(query, safe, lang string, page int) ([]TextSearchResult, error) {
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opts := append(chromedp.DefaultExecAllocatorOptions[:],
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chromedp.DisableGPU,
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chromedp.NoDefaultBrowserCheck,
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chromedp.NoFirstRun,
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chromedp.Flag("disable-javascript", true),
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)
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ctx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
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defer cancel()
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ctx, cancel = chromedp.NewContext(ctx)
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defer cancel()
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var results []TextSearchResult
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searchURL := buildSearchURL(query, safe, lang, page, 10)
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var pageSource string
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err := chromedp.Run(ctx,
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chromedp.Navigate(searchURL),
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chromedp.Sleep(2*time.Second),
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chromedp.OuterHTML("html", &pageSource),
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)
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if err != nil {
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return nil, fmt.Errorf("failed to retrieve page source: %v", err)
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}
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newResults, err := parseResults(pageSource)
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if err != nil {
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return nil, fmt.Errorf("error parsing results: %v", err)
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}
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results = append(results, newResults...)
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return results, nil
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}
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func buildSearchURL(query, safe, lang string, page, resultsPerPage int) string {
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safeParam := "&safe=off"
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if safe == "active" {
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safeParam = "&safe=active"
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}
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langParam := ""
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if lang != "" {
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langParam = "&lr=" + lang
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}
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startParam := fmt.Sprintf("&start=%d", (page-1)*resultsPerPage)
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return fmt.Sprintf("https://www.google.com/search?q=%s%s%s%s", url.QueryEscape(query), safeParam, langParam, startParam)
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}
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func parseResults(pageSource string) ([]TextSearchResult, error) {
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var results []TextSearchResult
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doc, err := goquery.NewDocumentFromReader(strings.NewReader(pageSource))
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if err != nil {
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return nil, fmt.Errorf("loading HTML document: %v", err)
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}
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doc.Find(".yuRUbf").Each(func(i int, s *goquery.Selection) {
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link := s.Find("a")
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href, exists := link.Attr("href")
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if !exists {
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return
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}
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header := link.Find("h3").Text()
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header = strings.TrimSpace(strings.TrimSuffix(header, "›"))
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description := ""
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descSelection := doc.Find(".VwiC3b").Eq(i)
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if descSelection.Length() > 0 {
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description = descSelection.Text()
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}
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result := TextSearchResult{
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URL: href,
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Header: header,
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Description: description,
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}
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results = append(results, result)
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})
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return results, nil
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}
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