cleanup errors

main.go

@@ -52,7 +52,8 @@ func parse() {
 }
 
 func main() {
-	fmt.Println("vim-go")
+	log.Print("Youtube UI")
+	log.SetFlags(log.Flags() | log.Lshortfile)
 	parse()
 	tmpl := template.New("page")
 	tmpl = tmpl.Funcs(map[string]any{
@@ -60,11 +61,11 @@ func main() {
 	})
 	tmpl, err := tmpl.Parse(page)
 	if err != nil {
-		panic(err)
+		log.Panic(err)
 	}
 	d, err = db.Load(dbPath)
 	if err != nil {
-		panic(err)
+		log.Panic(err)
 	}
 	defer d.Save()
 	seen := map[string]struct{}{}
@@ -77,17 +78,16 @@ func main() {
 		if r.Method == http.MethodGet {
 			d.Run(func(d *db.Jdb) {
 				if err := tmpl.Execute(w, d); err != nil {
-					panic(err)
+					log.Panic(err)
 				}
 			})
 			return
 		}
-		if err := r.ParseForm(); err != nil {
-			panic(err)
-		}
 		yturl := r.PostFormValue("youtube_url")
 		if yturl == "" {
-			panic("yturl empty")
+			log.Printf("yturl empty, postform:%v\n", r.PostForm)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
 		}
 		if _, ok := seen[yturl]; !ok {
 			seen[yturl] = struct{}{}
@@ -104,18 +104,21 @@ func main() {
 		}
 		http.Redirect(w, r, "/", http.StatusSeeOther)
 	})
-	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%v", port), nil))
+	log.Panic(http.ListenAndServe(fmt.Sprintf(":%v", port), nil))
 }
 
 func getTitle(id int, yturl string) {
 	args := append(ytdlCmd, "--get-title", yturl)
 	cmd := exec.Command(args[0], args[1:]...)
-	op, err := cmd.Output()
-	if err != nil {
-		panic(err)
+	var title string
+	if op, err := cmd.Output(); err != nil {
+		log.Printf("command failed, cmd: %v, err: %v", cmd, err)
+		title = "ERROR"
+	} else {
+		title = string(op)
 	}
 	d.Update(id, true, func(i *db.Item) {
-		i.Title = string(op)
+		i.Title = title
 	})
 }