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Svilen Markov
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Svilen Markov
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Svilen Markov
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Svilen Markov
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@ -0,0 +1,161 @@
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package glance
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import (
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"strings"
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"golang.org/x/net/html"
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)
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type searchableNode html.Node
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func (n *searchableNode) findFirst(tag string, attrs ...string) *searchableNode {
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if tag == "" || n == nil {
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return nil
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}
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if len(attrs)%2 != 0 {
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panic("attributes must be in key-value pairs")
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}
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if n.matches(tag, attrs...) {
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return n
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}
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for child := n.FirstChild; child != nil; child = child.NextSibling {
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if child.Type != html.ElementNode {
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continue
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}
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if found := (*searchableNode)(child).findFirst(tag, attrs...); found != nil {
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return found
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}
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}
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return nil
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}
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func (n *searchableNode) nthChild(index int) *searchableNode {
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if n == nil || index < 0 {
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return nil
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}
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if index == 0 {
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return n
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}
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count := 0
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for child := n.FirstChild; child != nil; child = child.NextSibling {
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if child.Type != html.ElementNode {
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continue
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}
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count++
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if count == index {
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return (*searchableNode)(child)
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}
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}
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return nil
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}
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func (n *searchableNode) findFirstChild(tag string, attrs ...string) *searchableNode {
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if tag == "" || n == nil {
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return nil
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}
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if len(attrs)%2 != 0 {
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panic("attributes must be in key-value pairs")
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}
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for child := n.FirstChild; child != nil; child = child.NextSibling {
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if child.Type != html.ElementNode {
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continue
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}
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if child.Type == html.ElementNode && (*searchableNode)(child).matches(tag, attrs...) {
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return (*searchableNode)(child)
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}
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}
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return nil
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}
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func (n *searchableNode) findAll(tag string, attrs ...string) []*searchableNode {
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if tag == "" || n == nil {
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return nil
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}
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if len(attrs)%2 != 0 {
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panic("attributes must be in key-value pairs")
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}
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var results []*searchableNode
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if n.matches(tag, attrs...) {
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results = append(results, n)
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}
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for child := n.FirstChild; child != nil; child = child.NextSibling {
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if child.Type != html.ElementNode {
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continue
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}
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results = append(results, (*searchableNode)(child).findAll(tag, attrs...)...)
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}
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return results
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}
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func (n *searchableNode) matches(tag string, attrs ...string) bool {
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if tag == "" || n == nil {
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return false
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}
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if len(attrs)%2 != 0 {
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panic("attributes must be in key-value pairs")
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}
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if n.Data != tag {
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return false
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}
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for i := 0; i < len(attrs); i += 2 {
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key := attrs[i]
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value := attrs[i+1]
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found := false
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for _, attr := range n.Attr {
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if attr.Key == key && attr.Val == value {
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found = true
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break
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}
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}
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if !found {
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return false
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}
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}
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return true
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}
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func (n *searchableNode) text() string {
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if n == nil {
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return ""
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}
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if n.Type == html.TextNode {
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return strings.TrimSpace(n.Data)
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}
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var builder strings.Builder
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for child := n.FirstChild; child != nil; child = child.NextSibling {
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switch child.Type {
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case html.TextNode:
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builder.WriteString(strings.TrimSpace(child.Data))
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case html.ElementNode:
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builder.WriteString((*searchableNode)(child).text())
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}
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}
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return builder.String()
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}
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@ -0,0 +1,22 @@
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{{ template "widget-base.html" . }}
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{{ define "widget-content" }}
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<ul class="list list-gap-14 collapsible-container" data-collapse-after="{{ .CollapseAfter }}">
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{{ range .Repositories }}
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<li>
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<a class="size-h4 block text-truncate color-primary-if-not-visited" href="https://github.com/{{ .Slug }}" target="_blank" rel="noreferrer">{{ .Slug }}</a>
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{{ if .Description}}
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<p class="text-truncate-2-lines margin-top-3">{{ .Description }}</p>
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{{ end }}
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<ul class="list-horizontal-text margin-top-3">
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{{ if .Language }}
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<li>{{ .Language }}</li>
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{{ end }}
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<li>{{ .Stars | formatNumber }} stars</li>
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</ul>
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</li>
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{{ else }}
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<p>No repositories found.</p>
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{{ end }}
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</ul>
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{{ end }}
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@ -0,0 +1,113 @@
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package glance
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import (
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"context"
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"fmt"
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"html/template"
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"slices"
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"strconv"
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"strings"
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"time"
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"golang.org/x/net/html"
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)
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var trendingRepositoriesWidgetTemplate = mustParseTemplate("trending-repositories.html", "widget-base.html")
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type trendingRepositoriesWidget struct {
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widgetBase `yaml:",inline"`
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Repositories []trendingRepository `yaml:"-"`
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Language string `yaml:"language"`
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DateRange string `yaml:"date-range"`
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CollapseAfter int `yaml:"collapse-after"`
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}
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func (widget *trendingRepositoriesWidget) initialize() error {
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widget.withTitle("Trending Repositories").withCacheDuration(8 * time.Hour)
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if widget.CollapseAfter == 0 || widget.CollapseAfter < -1 {
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widget.CollapseAfter = 4
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}
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if !slices.Contains([]string{"daily", "weekly", "monthly"}, widget.DateRange) {
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widget.DateRange = "daily"
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}
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return nil
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}
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func (widget *trendingRepositoriesWidget) update(ctx context.Context) {
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repositories, err := widget.fetchTrendingRepositories()
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if !widget.canContinueUpdateAfterHandlingErr(err) {
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return
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}
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widget.Repositories = repositories
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}
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func (widget *trendingRepositoriesWidget) Render() template.HTML {
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return widget.renderTemplate(widget, trendingRepositoriesWidgetTemplate)
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}
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type trendingRepository struct {
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Slug string
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Description string
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Language string
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Stars int
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}
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func (widget *trendingRepositoriesWidget) fetchTrendingRepositories() ([]trendingRepository, error) {
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url := fmt.Sprintf("https://github.com/trending/%s?since=%s", widget.Language, widget.DateRange)
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response, err := defaultHTTPClient.Get(url)
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if err != nil {
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return nil, fmt.Errorf("failed to fetch trending repositories: %w", err)
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}
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defer response.Body.Close()
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if response.StatusCode != 200 {
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return nil, fmt.Errorf("unexpected status code %d for %s", response.StatusCode, url)
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}
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parsedDoc, err := html.Parse(response.Body)
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if err != nil {
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return nil, fmt.Errorf("failed to parse HTML response: %w", err)
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}
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doc := (*searchableNode)(parsedDoc)
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repositories := make([]trendingRepository, 0, 15)
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repoElems := doc.
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findFirst("main").
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findFirst("div", "class", "Box").
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findAll("article", "class", "Box-row")
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for _, repoElem := range repoElems {
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nameElem := repoElem.findFirstChild("h2").findFirst("a", "class", "Link")
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name := strings.ReplaceAll(nameElem.text(), " ", "")
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description := repoElem.findFirstChild("p").text()
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metaElem := repoElem.findFirstChild("div", "class", "f6 color-fg-muted mt-2")
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language := metaElem.findFirst("span", "itemprop", "programmingLanguage").text()
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starsIndex := 2
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if language == "" {
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starsIndex = 1
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}
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starsText := metaElem.nthChild(starsIndex).text()
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starsText = strings.ReplaceAll(starsText, ",", "")
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stars, _ := strconv.Atoi(starsText)
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repositories = append(repositories, trendingRepository{
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Slug: name,
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Description: description,
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Language: language,
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Stars: stars,
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})
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}
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return repositories, nil
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}
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