Add input_weekday integration

source/_integrations/input_weekday.markdown

@@ -0,0 +1,117 @@
+---
+title: Input weekday
+description: Instructions on how to use the input weekday helper with Home Assistant.
+ha_category:
+  - Automation
+  - Helper
+ha_release: 2025.11
+ha_quality_scale: internal
+ha_codeowners:
+  - '@home-assistant/core'
+ha_domain: input_weekday
+ha_integration_type: helper
+---
+
+The **Input weekday** helper integration allows you to define a selection of weekdays that can be controlled via the user interface and used within conditions and triggers of an {% term automation %}. This makes it easy to dynamically manage weekday-based automations without having to manually specify weekdays in your automation configuration.
+
+## Configuration
+
+The preferred way to configure input weekday helpers is via the user interface,
+in which they are known as Weekday Helpers. To add one, go to
+**{% my helpers title="Settings > Devices & services > Helpers" %}** and click the add button;
+next choose the **{% my config_flow_start domain="input_weekday" title="Weekday" %}** option.
+
+To be able to add **Helpers** via the user interface you should have
+`default_config:` in your {% term "`configuration.yaml`" %}, it should already be there by
+default unless you removed it. If you removed `default_config:` from your
+configuration, you must add `input_weekday:` to your {% term "`configuration.yaml`" %} first,
+then you can use the UI.
+
+Input weekdays can also be configured via {% term "`configuration.yaml`" %} file:
+
+{% configuration %}
+  input_weekday:
+    description: Alias for the input. Multiple entries are allowed.
+    required: true
+    type: map
+    keys:
+      name:
+        description: Friendly name of the input.
+        required: false
+        type: string
+      weekdays:
+        description: List of initially selected weekdays.
+        required: false
+        type: list
+        default: a previous value is restored if available
+      icon:
+        description: Icon to display in front of the input element in the frontend.
+        required: false
+        type: icon
+{% endconfiguration %}
+
+```yaml
+# Example configuration.yaml entry
+input_weekday:
+  work_days:
+    name: Work days
+    weekdays:
+      - mon
+      - tue
+      - wed
+      - thu
+      - fri
+    icon: mdi:briefcase
+```
+
+Valid weekday values are: `mon`, `tue`, `wed`, `thu`, `fri`, `sat`, `sun`.
+
+## Actions
+
+This integration provides the following {% term actions %} to modify the state of the
+`input_weekday` and an action to reload the configuration without restarting
+Home Assistant itself.
+
+| Action            | Data                | Description                                                         |
+| ----------------- | ------------------- | ------------------------------------------------------------------- |
+| `set_weekdays`    | `weekdays`          | Set the selected weekdays (replaces all current selections)         |
+| `add_weekday`     | `weekday`           | Add a single weekday to the selection                               |
+| `remove_weekday`  | `weekday`           | Remove a single weekday from the selection                          |
+| `toggle_weekday`  | `weekday`           | Toggle a single weekday (add if not selected, remove if selected)   |
+| `clear`           |                     | Clear all selected weekdays                                         |
+| `reload`          |                     | Reload `input_weekday` configuration                                |
+
+## Automation examples
+
+Here's an example of an automation using the above `input_weekday` in a time trigger. This automation will only trigger on the selected weekdays.
+
+```yaml
+automation:
+  alias: "Weekday alarm"
+  triggers:
+    - trigger: time
+      at: "07:00:00"
+      weekday: input_weekday.work_days
+  actions:
+    - action: light.turn_on
+      target:
+        entity_id: light.bedroom
+```
+
+You can also use an `input_weekday` in a time condition:
+
+```yaml
+automation:
+  alias: "Weekday notifications"
+  triggers:
+    - trigger: state
+      entity_id: binary_sensor.motion_detected
+      to: "on"
+  conditions:
+    - condition: time
+      weekday: input_weekday.work_days
+  actions:
+    - action: notify.mobile_app
+      data:
+        message: "Motion detected on a work day"
+```