---
- name: Create Config Dir
  file:
    path: "{{ matrix_maubot_host_data_dir }}"
    state: directory
    mode: 0755
    owner: "{{ matrix_user_username }}"
  when: matrix_maubot_enabled|bool

- name: Create User Config Dir
  file:
    path: "{{ matrix_maubot_host_config_dir }}"
    state: directory
    mode: 0755
    owner: "{{ matrix_user_username }}"
  when: matrix_maubot_enabled|bool and matrix_maubot_host_config_dir|bool

- name: Create Config File
  template:
    src: maubot_config.yaml.j2
    dest: "{{ matrix_maubot_config_path }}"
    owner: "{{ matrix_user_username }}"
    mode: "u=rwx"
  when: matrix_maubot_enabled|bool

- name: Ensure Maubot image is pulled
  docker_image:
    name: "{{ matrix_maubot_docker_image }}"
    source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
    force_source: "{{ matrix_maubot_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
    force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_maubot_docker_image_force_pull }}"
  when: matrix_maubot_enabled|bool

- name: Ensure matrix-maubot.service installed
  template:
    src: "{{ role_path }}/templates/matrix-maubot.service.j2"
    dest: "/etc/systemd/system/matrix-maubot.service"
    mode: 0644
  register: matrix_maubot_systemd_service_result
  when: matrix_maubot_enabled|bool

- set_fact:
    matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-maubot'] }}"

- name: Fail if matrix-nginx-proxy role already executed
  fail:
    msg: >-
      Trying to append Maubot's reverse-proxying configuration to matrix-nginx-proxy,
      but it's pointless since the matrix-nginx-proxy role had already executed.
      To fix this, please change the order of roles in your plabook,
      so that the matrix-nginx-proxy role would run after the matrix-maubot role.
  when: matrix_nginx_proxy_role_executed|default(False)|bool and matrix_maubot_enabled|bool

- name: Generate Maubot proxying configuration for matrix-nginx-proxy
  set_fact:
    matrix_maubot_matrix_nginx_proxy_configuration: |
      location /_matrix/maubot {
      {% if matrix_nginx_proxy_enabled|default(False) %}
      	{# Use the embedded DNS resolver in Docker containers to discover the service #}
      	resolver 127.0.0.11 valid=5s;
      	set $backend "matrix-maubot:{{ matrix_maubot_management_port }}";
      	proxy_pass http://$backend;
      {% else %}
      	{# Generic configuration for use outside of our container setup #}
      	proxy_pass http://127.0.0.1:{{ matrix_maubot_management_port }};
      {% endif %}
      }
  when: matrix_maubot_enabled|bool

- name: Register Maubot's proxying configuration with matrix-nginx-proxy
  set_fact:
    matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks: |
      {{
        matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks|default([])
        +
        [matrix_maubot_matrix_nginx_proxy_configuration]
      }}
  when: matrix_maubot_enabled|bool

- name: Warn about reverse-proxying if matrix-nginx-proxy not used
  debug:
    msg: >-
      NOTE: You've enabled Maubot but are not using the matrix-nginx-proxy
      reverse proxy.
      Please make sure that you're proxying the `/_matrix/maubot`
      URL endpoint to the matrix-maubot container.
  when: "matrix_maubot_enabled|bool and matrix_nginx_proxy_enabled is not defined"

#
# Tasks related to getting rid of the maubot (if it was previously enabled)
#

- name: Check existence of matrix-maubot service
  stat:
    path: "/etc/systemd/system/matrix-maubot.service"
  register: matrix_maubot_service_stat
  when: "not matrix_maubot_enabled|bool"

- name: Ensure matrix-maubot is stopped
  service:
    name: matrix-maubot
    state: stopped
    daemon_reload: yes
  register: stopping_result
  when: "not matrix_maubot_enabled|bool and matrix_maubot_service_stat.stat.exists"

- name: Ensure matrix-maubot.service doesn't exist
  file:
    path: "/etc/systemd/system/matrix-maubot.service"
    state: absent
  when: "not matrix_maubot_enabled|bool and matrix_maubot_service_stat.stat.exists"

- name: Ensure systemd reloaded after matrix-maubot.service removal
  service:
    daemon_reload: yes
  when: "not matrix_maubot_enabled|bool and matrix_maubot_service_stat.stat.exists"

- name: Ensure maubot Docker image doesn't exist
  docker_image:
    name: "{{ matrix_maubot_docker_image }}"
    state: absent
  when: "not matrix_maubot_enabled|bool"