client.py: Always restart on errors if on kiosk mode except on graceful exit

playbook/templates/client.py

@@ -51,7 +51,15 @@ def select_ui(win, args):
         pass
     if args.kiosk:
         subprocess.call(['systemctl', 'poweroff'])
+    return True # exited as expected
 
+def retry(fun):
+    last_return = False
+    while not last_return:
+        try:
+            last_return = fun()
+        except:
+            pass # TODO save log file with error
 
 def main():
     parser = argparse.ArgumentParser(add_help=False)
@@ -66,7 +74,12 @@ def main():
         parts = [part.replace('_', ' ') for part in parts]
         print(str(' - '.join(parts)))
         return
+    def run():
         curses.wrapper(select_ui, args)
+    if args.kiosk:
+        retry(run)
+    else:
+        run()
 
 if __name__ == '__main__':
     main()