enhance: use public gateway if none is set (#5)

Signed-off-by: Grant Linville <[email protected]>

Author: g-linville

main.go

@@ -45,6 +45,8 @@ var (
 	optionalScope = os.Getenv("OPTIONAL_SCOPE")
 )
 
+const publicGatewayURL = "https://gateway-api.gptscript.ai"
+
 func main() {
 	configPath, err := xdg.ConfigFile("gptscript/config.json")
 	if err != nil {
@@ -73,6 +75,10 @@ func main() {
 		integrationAppID = integration
 	}
 
+	if cfg.GatewayURL == "" {
+		cfg.GatewayURL = publicGatewayURL
+	}
+
 	var (
 		authorizeURL = fmt.Sprintf("%s/oauth-apps/%s/authorize", cfg.GatewayURL, integrationAppID)
 		refreshURL   = fmt.Sprintf("%s/oauth-apps/%s/refresh", cfg.GatewayURL, integrationAppID)