add possibility to update models

tasks/main.yml

@@ -12,3 +12,7 @@
 - name: Deploy systemd
   include_tasks: systemd.yml
   tags: systemd
+
+- name: Update language models
+  include_tasks: models.yml
+  tags: models

tasks/models.yml

@@ -0,0 +1,49 @@
+---
+
+- name: "[SYSTEMD] - Stop systemd"
+  service:
+    name: libretranslate
+    state: stopped 
+  tags: models
+
+- name: "[MODELS] - Update models"
+  shell: ". /etc/profile.d/libretranslate.sh && {{ libretranslate_venv_path }}/bin/python3 {{ libretranslate_venv_path }}/bin/libretranslate --update-models --host {{ libretranslate_host }} > {{ libretranslate_venv_path }}/update_models.log"
+  args:
+    chdir: "{{ libretranslate_venv_path }}"
+  become: yes
+  become_user: '{{ libretranslate_user }}'
+  async: 300
+  poll: 0
+  register: updating_models
+  tags: models
+
+- name: "[MODELS] - Wait for the 'Running on' message that we get when updating models is done"
+  command: "grep 'Running on' {{ libretranslate_venv_path }}/update_models.log"
+  register: grep_running
+  until: "'Running on' in grep_running.stdout"
+  retries: 20 # it means retry 20 times.
+  delay: 10 # it means retry every 10 seconds
+  ignore_errors: true
+  tags: models
+
+- name: Handle result
+  debug:
+    msg: "{{ updating_models.ansible_job_id }}"
+  tags: models
+
+- name: Find the process ID (PID) of the asynchronous task
+  command: pgrep -f "libretranslate"
+  register: pid_result
+  ignore_errors: true
+  tags: models
+
+- name: Kill the process if it is still running
+  command: "kill -9 {{ pid_result.stdout }}"
+  when: pid_result.rc == 0
+  tags: models
+
+- name: "[SYSTEMD] - Start systemd"
+  service:
+    name: libretranslate
+    state: started 
+  tags: models