add optional timezone parameter on screensaver time (#1027)

* add optional timezone parameter on screensaver time

Signed-off-by: Jean 'henyxia' Wasilewski <henyxia@revs0.com>

* change config name

* Update config-overview.md

* Update config-overview.md

---------

Signed-off-by: Jean 'henyxia' Wasilewski <henyxia@revs0.com>
Co-authored-by: Johannes <29555657+joBr99@users.noreply.github.com>

apps/nspanel-lovelace-ui/luibackend/pages.py

@@ -1,4 +1,5 @@
 import datetime
+from dateutil import tz
 import dateutil.parser as dp
 import time
 
@@ -108,10 +109,17 @@ class LuiPagesGen(object):
 
 
     def update_time(self, kwargs):
-        time = datetime.datetime.now().strftime(self._config.get("timeFormat"))
+        time = None
+        # get current time, with timezone if set
+        if self._config.get("timezone"):
+            timezone = tz.gettz(self._config.get("timezone"))
+            time = datetime.datetime.now(tz=timezone)
+        else:
+            time = datetime.datetime.now()
+        nice_time = time.strftime(self._config.get("timeFormat"))
         addTemplate = self._config.get("timeAdditionalTemplate")
         addTimeText = apis.ha_api.render_template(addTemplate)
-        self._send_mqtt_msg(f"time~{time}~{addTimeText}")
+        self._send_mqtt_msg(f"time~{nice_time}~{addTimeText}")
 
     def update_date(self, kwargs):
         global babel_spec

docs/config-overview.md

@@ -68,6 +68,7 @@ key | optional | type | default | description
 `dateAdditionalTemplate` | True | string | `""` | Addional Text dispayed after Date, can contain a Homeassistant Template Example `" - {{ states('sun.sun') }}"`
 `timeAdditionalTemplate` | True | string | `""` | Addional Text dispayed below Time, can contain a Homeassistant Template
 `dateFormat` | True | string | `%A, %d. %B %Y` | date format used if babel is not installed
+`timezone` | True | string | "" | Timezone for the time on the panel: `Europe/Berlin` - See https://en.wikipedia.org/wiki/List_of_tz_database_time_zones for a list of TZ Identifiers (supported from upcoming version v4.4)
 `defaultBackgroundColor` | True | string | ha-dark | backgroud color of all cards, valid values: `black`, `ha-dark`
 `cards` | False | complex | | configuration for cards that are displayed on panel; see docs for cards
 `screensaver` | True | complex | | configuration for screensaver; see docs for screensaver