fix an issue with an input template

fan-cadence.yaml

@@ -1,8 +1,7 @@
 blueprint:
   name: Fan Cadence with Light Check
   description: >
-    Runs a fan on a cadence every X minutes.
-    Turns it off after Y seconds unless any of the specified lights are on.
+    Turns on a fan every X minutes for Y seconds, but keeps it on if any selected lights are on.
   domain: automation
   input:
     fan_entity:
@@ -12,8 +11,8 @@ blueprint:
           domain: fan
 
     interval_minutes:
-      name: Fan Activation Interval (minutes)
-      description: How often to turn the fan on
+      name: Interval (minutes)
+      description: How often to start the fan cycle
       default: 15
       selector:
         number:
@@ -22,8 +21,8 @@ blueprint:
           unit_of_measurement: minutes
 
     duration_seconds:
-      name: How Long to Keep Fan On (seconds)
-      description: How long the fan stays on before trying to turn it off
+      name: Fan On Duration (seconds)
+      description: How long the fan stays on each cycle
       default: 60
       selector:
         number:
@@ -33,33 +32,42 @@ blueprint:
 
     override_lights:
       name: Override Lights
-      description: Fan will not be turned off if any of these lights are on
+      description: Fan will not turn off if any of these lights are on
       selector:
         entity:
           domain: light
           multiple: true
 
 trigger:
-  - platform: time_pattern
-    minutes: "/{{ iif(interval_minutes | int > 0, interval_minutes, 15) }}"
+  - platform: homeassistant
+    event: start
+  - platform: time
+    at: "00:00:00"  # ensures automation starts at midnight if HA is already running
 
 variables:
   fan: !input fan_entity
   lights: !input override_lights
+  interval: !input interval_minutes
+  duration: !input duration_seconds
 
 condition: []
 
 action:
+  - repeat:
+      while: []
+      sequence:
         - service: fan.turn_on
           target:
             entity_id: "{{ fan }}"
         - delay:
-      seconds: !input duration_seconds
+            seconds: "{{ duration }}"
         - condition: template
           value_template: >
             {{ lights | map('states') | select('eq', 'on') | list | length == 0 }}
         - service: fan.turn_off
           target:
             entity_id: "{{ fan }}"
+        - delay:
+            minutes: "{{ interval }}"
 
-mode: parallel
+mode: restart