Fix redirect bug, add note about serving under non-root path

wuttapos/app.py

@@ -210,7 +210,7 @@ def main(page: ft.Page):
             redirect = '/pos' if user_uuid else '/login'
 
         if redirect and page.route != redirect:
-            page.go(other)
+            page.go(redirect)
             return
 
         if page.route == '/pos':

wuttapos/commands.py

@@ -79,15 +79,28 @@ class Serve(commands.Subcommand):
         import flet as ft
         from wuttapos.app import main
 
+        kw = {}
+
         host = self.config.get('wuttapos', 'serve.host',
                                default='0.0.0.0')
+        kw['host'] = host
+
         port = self.config.getint('wuttapos', 'serve.port',
                                   default=8332)
-        path = self.config.get('wuttapos', 'serve.path')
+        kw['port'] = port
 
-        log.info(f"will serve WuttaPOS on http://{host}:{port}")
-        ft.app(name=path, target=main, view=None, host=host, port=port,
-               assets_dir=resource_path('wuttapos:assets'))
+        # TODO: we technically "support" this, in that we do pass the
+        # value on to Flet, but in practice it does not work right
+        path = self.config.get('wuttapos', 'serve.path', default='')
+        if path:
+            path = path.strip('/') + '/'
+            kw['name'] = path
+            # kw['route_url_strategy'] = 'hash'
+
+        log.info(f"will serve WuttaPOS on http://{host}:{port}/{path}")
+        ft.app(target=main, view=None,
+               assets_dir=resource_path('wuttapos:assets'),
+               **kw)
 
 
 class Status(commands.Subcommand):