Split time_pattern triggers from time trigger (#19825)

* Split interval triggers from time trigger

* Default smaller interval units to zero

* Rename interval to schedule

* Rename schedule to time_pattern

homeassistant/components/automation/time_pattern.py

@@ -0,0 +1,53 @@
+"""
+Offer time listening automation rules.
+
+For more details about this automation rule, please refer to the documentation
+at https://home-assistant.io/docs/automation/trigger/#time-trigger
+"""
+import logging
+
+import voluptuous as vol
+
+from homeassistant.core import callback
+from homeassistant.const import CONF_PLATFORM
+from homeassistant.helpers import config_validation as cv
+from homeassistant.helpers.event import async_track_time_change
+
+CONF_HOURS = 'hours'
+CONF_MINUTES = 'minutes'
+CONF_SECONDS = 'seconds'
+
+_LOGGER = logging.getLogger(__name__)
+
+TRIGGER_SCHEMA = vol.All(vol.Schema({
+    vol.Required(CONF_PLATFORM): 'time_pattern',
+    CONF_HOURS: vol.Any(vol.Coerce(int), vol.Coerce(str)),
+    CONF_MINUTES: vol.Any(vol.Coerce(int), vol.Coerce(str)),
+    CONF_SECONDS: vol.Any(vol.Coerce(int), vol.Coerce(str)),
+}), cv.has_at_least_one_key(CONF_HOURS, CONF_MINUTES, CONF_SECONDS))
+
+
+async def async_trigger(hass, config, action, automation_info):
+    """Listen for state changes based on configuration."""
+    hours = config.get(CONF_HOURS)
+    minutes = config.get(CONF_MINUTES)
+    seconds = config.get(CONF_SECONDS)
+
+    # If larger units are specified, default the smaller units to zero
+    if minutes is None and hours is not None:
+        minutes = 0
+    if seconds is None and minutes is not None:
+        seconds = 0
+
+    @callback
+    def time_automation_listener(now):
+        """Listen for time changes and calls action."""
+        hass.async_run_job(action, {
+            'trigger': {
+                'platform': 'time_pattern',
+                'now': now,
+            },
+        })
+
+    return async_track_time_change(hass, time_automation_listener,
+                                   hour=hours, minute=minutes, second=seconds)