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

.env.dist

@@ -1 +1,2 @@
 ARCAST_DESKTOP_ADDITIONAL_CHROME_ARGS=
+ARCAST_DESKTOP_INSTANCE_ID=

cmd/desktop/main.go

@@ -9,6 +9,6 @@ func main() {
 	command.Main(
 		"arcast",
 		"Arcast desktop player",
-		player.Root(),
+		player.Root().Subcommands...,
 	)
 }

internal/command/player/run.go

@@ -21,12 +21,19 @@ func Run() *cli.Command {
 				EnvVars: []string{"ARCAST_DESKTOP_ADDITIONAL_CHROME_ARGS"},
 				Value:   cli.NewStringSlice("incognito"),
 			},
+			&cli.StringFlag{
+				Name:    "instance-id",
+				EnvVars: []string{"ARCAST_DESKTOP_INSTANCE_ID"},
+				Value:   "",
+			},
 			&cli.IntFlag{
 				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,
 			},
 		},
@@ -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")

modd.conf

@@ -4,5 +4,5 @@ modd.conf
 .env {
     prep: make build-client
     prep: make build-desktop
-    daemon: make run RUN_CMD="bin/desktop --debug --log-level debug player run"
+    daemon: make run RUN_CMD="bin/desktop --debug --log-level debug run"
 }