Restructure & refactor codebase

internal/glance/widget-videos.go

@@ -0,0 +1,189 @@
+package glance
+
+import (
+	"context"
+	"fmt"
+	"html/template"
+	"log/slog"
+	"net/http"
+	"net/url"
+	"sort"
+	"strings"
+	"time"
+)
+
+var (
+	videosWidgetTemplate     = mustParseTemplate("videos.html", "widget-base.html", "video-card-contents.html")
+	videosWidgetGridTemplate = mustParseTemplate("videos-grid.html", "widget-base.html", "video-card-contents.html")
+)
+
+type videosWidget struct {
+	widgetBase        `yaml:",inline"`
+	Videos            videoList `yaml:"-"`
+	VideoUrlTemplate  string    `yaml:"video-url-template"`
+	Style             string    `yaml:"style"`
+	CollapseAfterRows int       `yaml:"collapse-after-rows"`
+	Channels          []string  `yaml:"channels"`
+	Limit             int       `yaml:"limit"`
+	IncludeShorts     bool      `yaml:"include-shorts"`
+}
+
+func (widget *videosWidget) initialize() error {
+	widget.withTitle("Videos").withCacheDuration(time.Hour)
+
+	if widget.Limit <= 0 {
+		widget.Limit = 25
+	}
+
+	if widget.CollapseAfterRows == 0 || widget.CollapseAfterRows < -1 {
+		widget.CollapseAfterRows = 4
+	}
+
+	return nil
+}
+
+func (widget *videosWidget) update(ctx context.Context) {
+	videos, err := FetchYoutubeChannelUploads(widget.Channels, widget.VideoUrlTemplate, widget.IncludeShorts)
+
+	if !widget.canContinueUpdateAfterHandlingErr(err) {
+		return
+	}
+
+	if len(videos) > widget.Limit {
+		videos = videos[:widget.Limit]
+	}
+
+	widget.Videos = videos
+}
+
+func (widget *videosWidget) Render() template.HTML {
+	if widget.Style == "grid-cards" {
+		return widget.renderTemplate(widget, videosWidgetGridTemplate)
+	}
+
+	return widget.renderTemplate(widget, videosWidgetTemplate)
+}
+
+type youtubeFeedResponseXml struct {
+	Channel     string `xml:"author>name"`
+	ChannelLink string `xml:"author>uri"`
+	Videos      []struct {
+		Title     string `xml:"title"`
+		Published string `xml:"published"`
+		Link      struct {
+			Href string `xml:"href,attr"`
+		} `xml:"link"`
+
+		Group struct {
+			Thumbnail struct {
+				Url string `xml:"url,attr"`
+			} `xml:"http://search.yahoo.com/mrss/ thumbnail"`
+		} `xml:"http://search.yahoo.com/mrss/ group"`
+	} `xml:"entry"`
+}
+
+func parseYoutubeFeedTime(t string) time.Time {
+	parsedTime, err := time.Parse("2006-01-02T15:04:05-07:00", t)
+
+	if err != nil {
+		return time.Now()
+	}
+
+	return parsedTime
+}
+
+type video struct {
+	ThumbnailUrl string
+	Title        string
+	Url          string
+	Author       string
+	AuthorUrl    string
+	TimePosted   time.Time
+}
+
+type videoList []video
+
+func (v videoList) sortByNewest() videoList {
+	sort.Slice(v, func(i, j int) bool {
+		return v[i].TimePosted.After(v[j].TimePosted)
+	})
+
+	return v
+}
+
+func FetchYoutubeChannelUploads(channelIds []string, videoUrlTemplate string, includeShorts bool) (videoList, error) {
+	requests := make([]*http.Request, 0, len(channelIds))
+
+	for i := range channelIds {
+		var feedUrl string
+		if !includeShorts && strings.HasPrefix(channelIds[i], "UC") {
+			playlistId := strings.Replace(channelIds[i], "UC", "UULF", 1)
+			feedUrl = "https://www.youtube.com/feeds/videos.xml?playlist_id=" + playlistId
+		} else {
+			feedUrl = "https://www.youtube.com/feeds/videos.xml?channel_id=" + channelIds[i]
+		}
+
+		request, _ := http.NewRequest("GET", feedUrl, nil)
+		requests = append(requests, request)
+	}
+
+	job := newJob(decodeXmlFromRequestTask[youtubeFeedResponseXml](defaultClient), requests).withWorkers(30)
+
+	responses, errs, err := workerPoolDo(job)
+
+	if err != nil {
+		return nil, fmt.Errorf("%w: %v", errNoContent, err)
+	}
+
+	videos := make(videoList, 0, len(channelIds)*15)
+
+	var failed int
+
+	for i := range responses {
+		if errs[i] != nil {
+			failed++
+			slog.Error("Failed to fetch youtube feed", "channel", channelIds[i], "error", errs[i])
+			continue
+		}
+
+		response := responses[i]
+
+		for j := range response.Videos {
+			v := &response.Videos[j]
+			var videoUrl string
+
+			if videoUrlTemplate == "" {
+				videoUrl = v.Link.Href
+			} else {
+				parsedUrl, err := url.Parse(v.Link.Href)
+
+				if err == nil {
+					videoUrl = strings.ReplaceAll(videoUrlTemplate, "{VIDEO-ID}", parsedUrl.Query().Get("v"))
+				} else {
+					videoUrl = "#"
+				}
+			}
+
+			videos = append(videos, video{
+				ThumbnailUrl: v.Group.Thumbnail.Url,
+				Title:        v.Title,
+				Url:          videoUrl,
+				Author:       response.Channel,
+				AuthorUrl:    response.ChannelLink + "/videos",
+				TimePosted:   parseYoutubeFeedTime(v.Published),
+			})
+		}
+	}
+
+	if len(videos) == 0 {
+		return nil, errNoContent
+	}
+
+	videos.sortByNewest()
+
+	if failed > 0 {
+		return videos, fmt.Errorf("%w: missing videos from %d channels", errPartialContent, failed)
+	}
+
+	return videos, nil
+}