Add Dawarich stack

apps/dawarich/homeassistant-dawarich.example.yaml

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+# Add `dawarich_api_key` to Home Assistant `secrets.yaml`.
+# The endpoint is the current OwnTracks-compatible Dawarich endpoint:
+# https://<host>/api/v1/owntracks/points?api_key=<api-key>
+
+rest_command:
+  dawarich_push_owntracks:
+    url: "https://dawarich.kaleschke.info/api/v1/owntracks/points?api_key={{ api_key }}"
+    method: POST
+    content_type: "application/json"
+    payload: >-
+      {
+        "_type": "location",
+        "lat": {{ latitude }},
+        "lon": {{ longitude }},
+        "tst": {{ timestamp }},
+        "acc": {{ accuracy | default(0) }},
+        "alt": {{ altitude | default(0) }},
+        "batt": {{ battery | default(0) }},
+        "tid": "{{ tracker_id[:2] }}"
+      }
+
+automation:
+  - id: dawarich_push_device_tracker_location
+    alias: Dawarich - push device tracker location
+    mode: queued
+    max: 20
+    trigger:
+      - platform: state
+        entity_id:
+          - device_tracker.your_phone
+    condition:
+      - condition: template
+        value_template: >-
+          {{ trigger.to_state is not none
+             and state_attr(trigger.entity_id, 'latitude') is number
+             and state_attr(trigger.entity_id, 'longitude') is number }}
+    action:
+      - service: rest_command.dawarich_push_owntracks
+        data:
+          api_key: !secret dawarich_api_key
+          tracker_id: "{{ trigger.entity_id.split('.')[1] }}"
+          latitude: "{{ state_attr(trigger.entity_id, 'latitude') }}"
+          longitude: "{{ state_attr(trigger.entity_id, 'longitude') }}"
+          accuracy: "{{ state_attr(trigger.entity_id, 'gps_accuracy') | default(0, true) }}"
+          altitude: "{{ state_attr(trigger.entity_id, 'altitude') | default(0, true) }}"
+          battery: "{{ state_attr(trigger.entity_id, 'battery_level') | default(0, true) }}"
+          timestamp: "{{ as_timestamp(trigger.to_state.last_updated) | int }}"