---

- set_fact:
    matrix_appservice_discord_requires_restart: false

- block:
    - name: Check if an SQLite database already exists
      stat:
        path: "{{ matrix_appservice_discord_sqlite_database_path_local }}"
      register: matrix_appservice_discord_sqlite_database_path_local_stat_result

    - block:
        - set_fact:
            matrix_postgres_db_migration_request:
              src: "{{ matrix_appservice_discord_sqlite_database_path_local }}"
              dst: "{{ matrix_appservice_discord_database_connString }}"
              caller: "{{ role_path|basename }}"
              engine_variable_name: 'matrix_appservice_discord_database_engine'
              engine_old: 'sqlite'
              systemd_services_to_stop: ['matrix-appservice-discord.service']

        - import_tasks: "{{ role_path }}/../matrix-postgres/tasks/util/migrate_db_to_postgres.yml"

        - set_fact:
            matrix_appservice_discord_requires_restart: true
      when: "matrix_appservice_discord_sqlite_database_path_local_stat_result.stat.exists|bool"
  when: "matrix_appservice_discord_database_engine == 'postgres'"

- name: Ensure Appservice Discord image is pulled
  docker_image:
    name: "{{ matrix_appservice_discord_docker_image }}"
    source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
    force_source: "{{ matrix_appservice_discord_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_appservice_discord_docker_image_force_pull }}"

- name: Ensure AppService Discord paths exist
  file:
    path: "{{ item }}"
    state: directory
    mode: 0750
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_groupname }}"
  with_items:
    - "{{ matrix_appservice_discord_base_path }}"
    - "{{ matrix_appservice_discord_config_path }}"
    - "{{ matrix_appservice_discord_data_path }}"

- name: Check if an old database file already exists
  stat:
    path: "{{ matrix_appservice_discord_base_path }}/discord.db"
  register: matrix_appservice_discord_stat_db

- name: (Data relocation) Ensure matrix-appservice-discord.service is stopped
  service:
    name: matrix-appservice-discord
    state: stopped
    enabled: false
    daemon_reload: true
  failed_when: false
  when: "matrix_appservice_discord_stat_db.stat.exists"

- name: (Data relocation) Move AppService Discord discord.db file to ./data directory
  command: "mv {{ matrix_appservice_discord_base_path }}/{{ item }} {{ matrix_appservice_discord_data_path }}/{{ item }}"
  with_items:
    - discord.db
    - user-store.db
    - room-store.db
  when: "matrix_appservice_discord_stat_db.stat.exists"

- name: Ensure AppService Discord config.yaml installed
  copy:
    content: "{{ matrix_appservice_discord_configuration|to_nice_yaml }}"
    dest: "{{ matrix_appservice_discord_config_path }}/config.yaml"
    mode: 0644
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_groupname }}"

- name: Ensure AppService Discord registration.yaml installed
  copy:
    content: "{{ matrix_appservice_discord_registration|to_nice_yaml }}"
    dest: "{{ matrix_appservice_discord_config_path }}/registration.yaml"
    mode: 0644
    owner: "{{ matrix_user_username }}"
    group: "{{ matrix_user_groupname }}"

# If `matrix_appservice_discord_client_id` hasn't changed, the same invite link would be generated.
# We intentionally suppress Ansible changes.
- name: Generate AppService Discord invite link
  shell: >-
    {{ matrix_host_command_docker }} run --rm --name matrix-appservice-discord-link-gen
    --user={{ matrix_user_uid }}:{{ matrix_user_gid }}
    --cap-drop=ALL
    --mount type=bind,src={{ matrix_appservice_discord_config_path }},dst=/cfg
    -w /cfg
    {{ matrix_appservice_discord_docker_image }}
    /bin/sh -c "node /build/tools/addbot.js > /cfg/invite_link"
  changed_when: false

- name: Ensure matrix-appservice-discord.service installed
  template:
    src: "{{ role_path }}/templates/systemd/matrix-appservice-discord.service.j2"
    dest: "{{ matrix_systemd_path }}/matrix-appservice-discord.service"
    mode: 0644
  register: matrix_appservice_discord_systemd_service_result

- name: Ensure systemd reloaded after matrix-appservice-discord.service installation
  service:
    daemon_reload: true
  when: "matrix_appservice_discord_systemd_service_result.changed"

- name: Ensure matrix-appservice-discord.service restarted, if necessary
  service:
    name: "matrix-appservice-discord.service"
    state: restarted
  when: "matrix_appservice_discord_requires_restart|bool"