Log info about Issue #4 when running in GUI mode

pyproject.toml

@@ -21,7 +21,8 @@ dependencies = [
     "pyinstaller==6.4.0",
     "waitress==3.0.0",
     "Flask-JWT-Extended==4.6.0",
-    "pywebview==4.4.1"
+    "pywebview==4.4.1",
+    "requests==2.31.0"
 ]
 classifiers = [
     "Programming Language :: Python :: 3",

requirements.txt

@@ -7,4 +7,5 @@ Flask==3.0.2
 pyinstaller==6.4.0
 waitress==3.0.0
 Flask-JWT-Extended==4.6.0
-pywebview==4.4.1
+pywebview==4.4.1
+requests==2.31.0

src/palworld_pal_editor/gui.py

@@ -1,6 +1,7 @@
 import sys
 import threading
 import time
+import requests
 import traceback
 import webbrowser
 import webview
@@ -13,12 +14,25 @@ def main():
     t = threading.Thread(target=web_main)
     t.daemon = True
     t.start()
+
+    while True:
+        LOGGER.info("Waiting for backend response...")
+        try:
+            response = requests.get(f"http://127.0.0.1:{Config.port}/api/ready")
+            if response.status_code == 200:
+                LOGGER.info("Backend ready, launching GUI...")
+                break
+        except requests.exceptions.ConnectionError:
+            time.sleep(0.5)
+
+    LOGGER.info("If GUI doesn't work for you, check out this post: https://github.com/KrisCris/Palworld-Pal-Editor/issues/4")
+
     try:
-        webview.create_window(f"Palworld Pal Editor, developed by _connlost with ❤️. VERSION: {VERSION}", url=f"http://localhost:{Config.port}/", width=1600, height=1000, min_size=(960, 600))
+        webview.create_window(f"Palworld Pal Editor, developed by _connlost with ❤️. VERSION: {VERSION}", url=f"http://127.0.0.1:{Config.port}/", width=1600, height=1000, min_size=(960, 600))
         webview.start()
     except:
         LOGGER.warning(f"Failed Launching pywebview: {traceback.format_exc()}")
-        LOGGER.info("Fallback to web browser...")
+        LOGGER.info(f"Fallback to web browser, opening http://127.0.0.1:{Config.port} ...")
         threading.Timer(1, lambda: webbrowser.open(f"http://127.0.0.1:{Config.port}") ).start()
         t.join()
     sys.exit()

src/palworld_pal_editor/webui.py

@@ -47,6 +47,9 @@ def serve(path):
     else:
         return send_from_directory(str(static_folder_path), 'index.html')
 
+@app.route('/api/ready')
+def ready():
+    return reply(status=0), 200
 
 @jwt.invalid_token_loader
 def invalid_token_callback(error_string):