feat(desktop): pass instance id as flag or environment variable

internal/command/player/run.go

@@ -21,13 +21,20 @@ func Run() *cli.Command {
 				EnvVars: []string{"ARCAST_DESKTOP_ADDITIONAL_CHROME_ARGS"},
 				Value:   cli.NewStringSlice("incognito"),
 			},
-			&cli.IntFlag{
-				Name:  "window-height",
-				Value: defaults.Height,
+			&cli.StringFlag{
+				Name:    "instance-id",
+				EnvVars: []string{"ARCAST_DESKTOP_INSTANCE_ID"},
+				Value:   "",
 			},
 			&cli.IntFlag{
-				Name:  "window-width",
-				Value: defaults.Width,
+				Name:    "window-height",
+				EnvVars: []string{"ARCAST_DESKTOP_WINDOW_HEIGHT"},
+				Value:   defaults.Height,
+			},
+			&cli.IntFlag{
+				Name:    "window-width",
+				EnvVars: []string{"ARCAST_DESKTOP_WINDOW_WIDTH"},
+				Value:   defaults.Width,
 			},
 		},
 		Action: func(ctx *cli.Context) error {
@@ -57,7 +64,12 @@ func Run() *cli.Command {
 				}
 			}()
 
-			server := server.New(browser)
+			instanceID := ctx.String("instance-id")
+			if instanceID == "" {
+				instanceID = server.NewRandomInstanceID()
+			}
+
+			server := server.New(browser, server.WithInstanceID(instanceID))
 
 			if err := server.Start(); err != nil {
 				return errors.Wrap(err, "could not start server")