matrix-docker-ansible-deploy/roles/custom/matrix-element-call/tasks/update_element_web_config.yml

- name: Update Element Web config.json settings
  vars:
    additional_settings: |
      {
          "features": {
              "feature_video_rooms": true,
              "feature_new_room_decoration_ui": true,
              "feature_group_calls": true,
              "feature_element_call_video_rooms": true
          },
          "element_call": {
              "url": "https://{{ matrix_element_call_domain }}",
              "participant_limit": 8,
              "brand": "Element Call",
              "use_exclusively": true
          }
      }
  set_fact:
    updated_element_web_config: "{{ (element_web_config_content.content | b64decode | from_json) | combine(additional_settings | from_json, recursive=True) }}"
    
- name: Write updated Element Web config.json
  copy:
    content: "{{ updated_element_web_config | to_nice_json }}"
    dest: "{{ element_web_config_path }}"
    mode: '0644'
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_groupname }}"