download episode file before adding it to db

main.go

@@ -252,17 +252,17 @@ func main() {
 				newestEpisode := feed.Channel.Items[0]
 				episode, err := getEpisodeByGuid(db, newestEpisode.Guid)
 				if err != nil && episode == nil {
-					if err := addEpisode(db, newestEpisode, podcast.ID); err != nil {
-						log.Printf("failed to add new episode [%s]: %v\n", podcast.Name, err)
-						continue
-					}
-
 					data, err := downloadEpisodeAudioFile(newestEpisode.Enclosure.URL)
 					if err != nil {
 						log.Printf("failed to download newest episode audio file: %v\n", err)
 						continue
 					}
 
+					if err := addEpisode(db, newestEpisode, podcast.ID); err != nil {
+						log.Printf("failed to add new episode [%s]: %v\n", podcast.Name, err)
+						continue
+					}
+
 					f, err := os.OpenFile(path.Join(podcastsDirPath, podcast.Name, newestEpisode.Title+".mp3"), os.O_CREATE|os.O_RDWR, 0644)
 					if err != nil {
 						log.Printf("failed to create file for newest episode: %v\n", err)