more helpful errors

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"flag"
 	"log"
 	"time"
 
@@ -10,43 +11,51 @@ import (
 	"github.com/andreykaipov/goobs/api/typedefs"
 )
 
-/* TODO:
+/*
+	TODO:
+
 1. Set password with a flag instead of text in the code
-3. Change Panic(err) to code that doesn't crash the program if it fails
 4. Document functions
 */
+var password string
+
+func init() {
+	flag.StringVar(&password, "p", "", "your obs websocket password")
+	flag.Parse()
+}
 
 func main() {
 	// change this password lol!
-	sleepTime := 2.0
-	client, err := goobs.New("localhost:4455", goobs.WithPassword("lwihuN0OUVTMeCMM"))
+	sleepTime := 1.0
+	client, err := goobs.New("localhost:4455", goobs.WithPassword(password))
 	if err != nil {
-		panic(err)
+		log.Fatalf("Authentication failed, password %v absent or incorrect.", password)
 	}
 	defer client.Disconnect()
 	params := sceneitems.NewGetSceneItemListParams().WithSceneName("cmus")
 	scil, err := client.SceneItems.GetSceneItemList(params)
-
 	if err != nil {
-		panic(err)
+		// i should force create the scene if it does not exist. but this is solely for me.
+		// failing in this way is probably smarter since it forces to arrange the scene how i want it.
+		log.Fatalf("Expecting a scene named \"cmus\", but the scene was not found.\n%v", err.Error())
 	}
 	out, err := CmusRemoteOutput()
 	if err != nil {
-		panic(err)
+		log.Fatalf("%v\nCmus is likely not running.", err.Error())
 	}
 	path, err := getAttribute(out, "file ")
 	if err != nil {
-		panic(err)
+		log.Fatal(err.Error())
 	}
 	var prevPath string
 	for {
 		out, err = CmusRemoteOutput()
 		if err != nil {
-			panic(err)
+			log.Fatalf("%v\nCmus is likely not running.", err.Error())
 		}
 		path, err = getAttribute(out, "file ")
 		if err != nil {
-			panic(err)
+			log.Fatal(err.Error())
 		}
 		if path != prevPath {
 			artist, err := getAttribute(out, "tag artist ", "tag albumartist ", "tag composer ")
@@ -93,6 +102,8 @@ func updateItem(client *goobs.Client, sI *typedefs.SceneItem, value string, key
 	params.InputSettings[key] = value
 	_, err := client.Inputs.SetInputSettings(params)
 	if err != nil {
+		// i should probably forcefully create the item element missing, but
+		// this is fine for personal use.
 		log.Fatal(err)
 	}
 }