# SPDX-FileCopyrightText: 2023 - 2024 MDAD project contributors
# SPDX-FileCopyrightText: 2023 Catalan Lover <catalanlover@protonmail.com>
# SPDX-FileCopyrightText: 2024 David Mehren
# SPDX-FileCopyrightText: 2024 Slavi Pantaleev
# SPDX-FileCopyrightText: 2024 Suguru Hirahara
#
# SPDX-License-Identifier: AGPL-3.0-or-later

---

- ansible.builtin.set_fact:
    matrix_bot_draupnir_migration_requires_restart: false

- name: Ensure matrix-bot-draupnir paths exist
  ansible.builtin.file:
    path: "{{ item.path }}"
    state: directory
    mode: '0750'
    owner: "{{ matrix_user_name }}"
    group: "{{ matrix_group_name }}"
  with_items:
    - {path: "{{ matrix_bot_draupnir_base_path }}", when: true}
    - {path: "{{ matrix_bot_draupnir_config_path }}", when: true}
    - {path: "{{ matrix_bot_draupnir_data_path }}", when: true}
    - {path: "{{ matrix_bot_draupnir_container_src_files_path }}", when: "{{ matrix_bot_draupnir_container_image_self_build }}"}
  when: "item.when | bool"

- name: Ensure matrix-bot-draupnir support files installed
  ansible.builtin.template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    owner: "{{ matrix_user_name }}"
    group: "{{ matrix_group_name }}"
    mode: '0644'
  with_items:
    - src: "{{ role_path }}/templates/labels.j2"
      dest: "{{ matrix_bot_draupnir_base_path }}/labels"
  register: matrix_bot_draupnir_support_files_result

- name: Ensure Draupnir Docker image is pulled
  community.docker.docker_image_pull:
    name: "{{ matrix_bot_draupnir_container_image }}"
    pull: always
  when: "not matrix_bot_draupnir_container_image_self_build | bool"
  register: matrix_bot_draupnir_container_image_pull_result
  retries: "{{ devture_playbook_help_container_retries_count }}"
  delay: "{{ devture_playbook_help_container_retries_delay }}"
  until: matrix_bot_draupnir_container_image_pull_result is not failed

- name: Ensure Draupnir repository is present on self-build
  ansible.builtin.git:
    repo: "{{ matrix_bot_draupnir_container_image_self_build_repo }}"
    dest: "{{ matrix_bot_draupnir_container_src_files_path }}"
    version: "{{ matrix_bot_draupnir_container_image.split(':')[1] }}"
    force: "yes"
  become: true
  become_user: "{{ matrix_user_name }}"
  register: matrix_bot_draupnir_git_pull_results
  when: "matrix_bot_draupnir_container_image_self_build | bool"

- name: Ensure Draupnir Docker image is built
  # Using docker_image_build with BuildKit for modern, efficient builds.
  # Rebuild when the git checkout advanced to a new commit; otherwise keep the build idempotent.
  # Technically the idempotency of rebuilds is more that if a build has already been executed for that name:tag
  # then we won't rebuild while in idempotent mode even if git moved. That's what the force rebuild logic is for.
  community.docker.docker_image_build:
    name: "{{ matrix_bot_draupnir_container_image }}"
    dockerfile: Dockerfile
    path: "{{ matrix_bot_draupnir_container_src_files_path }}"
    pull: true
    rebuild: "{{ 'always' if matrix_bot_draupnir_git_pull_results.changed | bool else 'never' }}"
  when: "matrix_bot_draupnir_container_image_self_build | bool"
  register: matrix_bot_draupnir_container_image_build_result

- name: Ensure matrix-bot-draupnir config installed
  ansible.builtin.copy:
    content: "{{ matrix_bot_draupnir_configuration | to_nice_yaml(indent=2, width=999999) }}"
    dest: "{{ matrix_bot_draupnir_config_path }}/production.yaml"
    mode: '0644'
    owner: "{{ matrix_user_name }}"
    group: "{{ matrix_group_name }}"
  register: matrix_bot_draupnir_config_result

- name: Ensure matrix-bot-draupnir container network is created
  when: matrix_bot_draupnir_container_network != 'host'
  community.general.docker_network:
    enable_ipv6: "{{ devture_systemd_docker_base_ipv6_enabled }}"
    name: "{{ matrix_bot_draupnir_container_network }}"
    driver: bridge
    driver_options: "{{ devture_systemd_docker_base_container_networks_driver_options }}"

- name: Ensure matrix-bot-draupnir.service installed
  ansible.builtin.template:
    src: "{{ role_path }}/templates/systemd/matrix-bot-draupnir.service.j2"
    dest: "{{ devture_systemd_docker_base_systemd_path }}/matrix-bot-draupnir.service"
    mode: '0644'
  register: matrix_bot_draupnir_systemd_service_result

# matrix-bot-draupnir and matrix-appservice-draupnir-for-all share the
# same upstream container image. When both are enabled and force-pull is
# on, the second role to run sees the image as already up-to-date (the
# first role just pulled it), so its pull_result.changed is false and
# conditional restart would skip it. To avoid that, we also treat
# force-pull itself as a restart trigger for this role. The downside is
# that both Draupnir services restart on every run when force-pull is
# enabled (e.g. with rolling tags like `latest` or `main`), even when the
# upstream image has not moved. That is wasteful but acceptable.
# See: https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/5186
- name: Determine whether Draupnir needs a restart
  ansible.builtin.set_fact:
    matrix_bot_draupnir_restart_necessary: >-
      {{
        matrix_bot_draupnir_migration_requires_restart | default(false)
        or matrix_bot_draupnir_support_files_result.changed | default(false)
        or matrix_bot_draupnir_config_result.changed | default(false)
        or matrix_bot_draupnir_systemd_service_result.changed | default(false)
        or matrix_bot_draupnir_container_image_pull_result.changed | default(false)
        or matrix_bot_draupnir_container_image_build_result.changed | default(false)
        or matrix_bot_draupnir_force_restart | bool
      }}

- name: Ensure matrix-bot-draupnir.service restarted, if necessary
  ansible.builtin.service:
    name: "matrix-bot-draupnir.service"
    state: restarted
    daemon_reload: true
  when: "matrix_bot_draupnir_migration_requires_restart | bool"
