87 lines
1.9 KiB
Go
87 lines
1.9 KiB
Go
package bunicomic
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import (
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"aleesa-webapp-go/internal/config"
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"context"
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"errors"
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"fmt"
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"math/rand/v2"
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"regexp"
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"strings"
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"github.com/carlmjohnson/requests"
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"golang.org/x/net/html"
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)
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// APIClient клиент сервиса bunicomic.com.
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func APIClient(cfg *config.MyConfig) (string, error) {
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var (
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ctx = context.Background()
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body string
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userAgent = cfg.UserAgents[rand.IntN(len(cfg.UserAgents))]
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url = "https://www.bunicomic.com/?random&nocache=1"
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)
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err := requests.
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URL(url).
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UserAgent(userAgent).
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ToString(&body).
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Fetch(ctx)
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if err != nil {
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return "", fmt.Errorf("unable to GET %s: %w", url, err)
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}
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// Парсим body ответа от сервера.
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doc, err := html.Parse(strings.NewReader(body))
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if err != nil {
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return "", err
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}
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var (
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metaTags []string
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meta func(*html.Node)
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)
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meta = func(n *html.Node) {
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if n.Type == html.ElementNode && n.Data == "meta" {
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for _, meta := range n.Attr {
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if meta.Key == "content" {
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// adds a new link entry when the attribute matches
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metaTags = append(metaTags, meta.Val)
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}
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}
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}
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// traverses the HTML of the webpage from the first child node
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for c := n.FirstChild; c != nil; c = c.NextSibling {
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meta(c)
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}
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}
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meta(doc)
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// Возвращаем ссылку на картинку buni comic.
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if len(metaTags) != 0 {
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// А теперь среди полученнного мусора найдём ссылку на урл.
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for _, buni := range metaTags {
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match, err := regexp.MatchString(`wp-content/uploads`, buni) //nolint: staticcheck
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if err != nil {
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return "", err
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}
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if match {
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return buni, nil
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}
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}
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}
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// Картинки не выпарсилось, это точно ошибка.
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err = errors.New("unable to get link to buni comic strip image")
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return "", err
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}
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/* vim: set ft=go noet ai ts=4 sw=4 sts=4: */
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