add some podcast nit changes and make podcasts mandatory

server/ctrlsubsonic/spec/construct_podcast.go

@@ -0,0 +1,45 @@
+package spec
+
+import "go.senan.xyz/gonic/server/db"
+
+func NewPodcastChannel(p *db.Podcast) *PodcastChannel {
+	ret := &PodcastChannel{
+		ID:               p.SID(),
+		OriginalImageURL: p.ImageURL,
+		Title:            p.Title,
+		Description:      p.Description,
+		URL:              p.URL,
+		CoverArt:         p.SID(),
+		Status:           "skipped",
+	}
+	for _, episode := range p.Episodes {
+		specEpisode := NewPodcastEpisode(p, episode)
+		ret.Episode = append(ret.Episode, specEpisode)
+	}
+	return ret
+}
+
+func NewPodcastEpisode(p *db.Podcast, e *db.PodcastEpisode) *PodcastEpisode {
+	if e == nil {
+		return nil
+	}
+	return &PodcastEpisode{
+		ID:          e.SID(),
+		StreamID:    e.SID(),
+		ContentType: e.MIME(),
+		ChannelID:   p.SID(),
+		Title:       e.Title,
+		Description: e.Description,
+		Status:      e.Status,
+		CoverArt:    p.SID(),
+		PublishDate: *e.PublishDate,
+		Genre:       "Podcast",
+		Duration:    e.Length,
+		Year:        e.PublishDate.Year(),
+		Suffix:      e.Ext(),
+		BitRate:     e.Bitrate,
+		IsDir:       false,
+		Path:        e.Path,
+		Size:        e.Size,
+	}
+}