Organise unknown podcasts a bit better

Rather than showing a podcast's URL in the podcast menu, instead group
all unknown episodes under a single fake podcast called "Unrecognised".
This should make navigating one-off stuff a bit easier - as well as
making the UI nicer.

data/queue.go

@@ -32,8 +32,12 @@ var PossibleDirs = []string{
 	".newsboat",
 }
 
-// QueueFilename is the name of the file for the queue.
-const QueueFilename = "queue"
+const (
+	// QueueFilename is the name of the file for the queue.
+	QueueFilename = "queue"
+	// UnknownPodcastName is the name used for episodes from an unknown podcast.
+	UnknownPodcastName = "Unrecognised"
+)
 
 // Possible states of download queue.
 const (
@@ -293,15 +297,24 @@ func (q *Queue) GetPodcasts() (podcasts []string) {
 	defer q.mutex.RUnlock()
 
 	seen := make(map[string]bool)
+	uncat := false
+
 	for i := range q.Items {
 		name := DB.GetFriendlyName(q.Items[i].URL)
+		if name == q.Items[i].URL {
+			uncat = true
+			continue
+		}
 
 		if !seen[name] {
 			podcasts = append(podcasts, name)
 			seen[name] = true
 		}
 	}
 
+	if uncat {
+		podcasts = append(podcasts, UnknownPodcastName)
+	}
 	return
 }
 

ui/library.go

@@ -59,7 +59,12 @@ func (l *Library) renderEpisodes(x, y int) {
 
 	data.Q.RevRange(func(i int, elem *data.QueueItem) bool {
 		_, sel := l.men[0].GetSelection()
-		if data.DB.GetFriendlyName(elem.URL) == sel {
+		pc := data.DB.GetFriendlyName(elem.URL)
+
+		// Render this item if:
+		//   - It is a member of the current podcast
+		//   - It is uncategorised and we are showing those
+		if pc  == sel || (sel == data.UnknownPodcastName && pc == elem.URL) {
 			var text string
 			entry, ok := data.Downloads.Query(elem.Path)
 			title := entry.Title