Prva verzija - klix scraper

internal/scraper/klix.go

@@ -0,0 +1,96 @@
+package scraper
+
+import (
+	"fmt"
+	"github.com/gocolly/colly"
+	"github.com/gosimple/slug"
+	"gitlab.com/kbr4/svevijesti/internal/model"
+	"regexp"
+	"strings"
+	"time"
+)
+
+var KlixArticles = make(chan model.ScrapedArticle)
+var KlixCandidates = make(chan string)
+var KlixApprovedSites = make(chan string, 2)
+
+func CrawlKlix() {
+
+	crHomePage := colly.NewCollector(colly.AllowedDomains("www.klix.ba"))
+	crArticlePage := colly.NewCollector(colly.AllowedDomains("www.klix.ba"))
+
+	setupArticlePageCrawler(crArticlePage)
+	setupHomepageCrawler(crHomePage, crArticlePage)
+
+	go visitApprovedPages(crArticlePage)
+}
+
+func visitApprovedPages(crArticlePage *colly.Collector) {
+	fmt.Println("Consuming sites!")
+	for url := range KlixApprovedSites {
+		fmt.Println("Visiting: ", url)
+		crArticlePage.Visit(url)
+	}
+}
+
+func setupHomepageCrawler(crHomePage *colly.Collector, crArticlePage *colly.Collector) {
+
+	articleUrlR, _ := regexp.Compile("\\d\\d+$")
+	crHomePage.OnHTML(".container a", func(e *colly.HTMLElement) {
+		url := e.Attr("href")
+		completeUrl := "https://www.klix.ba" + url
+		if articleUrlR.MatchString(url) {
+			KlixCandidates <- completeUrl
+		}
+	})
+
+	crHomePage.OnScraped(func(_ *colly.Response) {
+		time.Sleep(5 * time.Second)
+		close(KlixArticles)
+		close(KlixApprovedSites)
+		close(KlixCandidates)
+	})
+
+	crHomePage.OnError(func(_ *colly.Response, _ error) {
+		close(KlixArticles)
+		close(KlixApprovedSites)
+		close(KlixCandidates)
+	})
+
+	go crHomePage.Visit("https://www.klix.ba")
+}
+
+func setupArticlePageCrawler(crArticlePage *colly.Collector) {
+	crArticlePage.OnHTML("html", func(e *colly.HTMLElement) {
+
+		url := e.Request.URL.String()
+
+		title := ""
+		e.ForEachWithBreak("title", func(_ int, el *colly.HTMLElement) bool {
+			title = el.Text
+			return false
+		})
+
+		text := ""
+
+		e.ForEach("div#text, p.lead", func(_ int, el *colly.HTMLElement) {
+			text += extractJustText(el.DOM)
+		})
+
+		article := model.ScrapedArticle{}
+
+		trimmedText := strings.TrimSpace(text)
+		article.OriginalUrl = url
+		article.Title = title
+		article.Content = trimmedText
+		article.SourceId = model.KlixSource
+		article.Slug = slug.Make(title)
+
+		KlixArticles <- article
+	})
+
+	crArticlePage.OnError(func(_ *colly.Response, _ error) {
+		fmt.Println("Problem crawling!")
+	})
+
+}

internal/scraper/scraper.go

@@ -0,0 +1,26 @@
+package scraper
+
+import (
+	"github.com/PuerkitoBio/goquery"
+)
+
+func extractJustText(el *goquery.Selection) string {
+	textPart := ""
+	htmlPart, _ := el.Html()
+	if len(el.Nodes) == 0 {
+		return ""
+	}
+
+	//fmt.Println("Checking: ", htmlPart, "Duzina: ", strconv.Itoa(len(el.Nodes)), " Type je ", el.Nodes[0].Type, " jednakost ", el.Text() == htmlPart)
+	if len(el.Nodes) == 1 && el.Text() == htmlPart {
+		return el.Text() + "\n"
+	}
+
+	el.Children().Each(func(_ int, el2 *goquery.Selection) {
+		if el2.Is("div, p, span, a") {
+			textPart += extractJustText(el2)
+		}
+	})
+
+	return textPart
+}