# SPDX-FileCopyrightText: 2019 - 2022 MDAD project contributors
# SPDX-FileCopyrightText: 2019 - 2026 Slavi Pantaleev
# SPDX-FileCopyrightText: 2025 - 2026 Thom Wiggers
# SPDX-FileCopyrightText: 2019 Dan Arnfield
# SPDX-FileCopyrightText: 2020 Chris van Dijk
# SPDX-FileCopyrightText: 2021 Panagiotis Georgiadis
# SPDX-FileCopyrightText: 2022 Jim Myhrberg
# SPDX-FileCopyrightText: 2022 Marko Weltzer
# SPDX-FileCopyrightText: 2022 Nikita Chernyi
# SPDX-FileCopyrightText: 2022 Sebastian Gumprich
# SPDX-FileCopyrightText: 2024 David Mehren
#
# SPDX-License-Identifier: AGPL-3.0-or-later

---

- ansible.builtin.include_role:
    name: custom/matrix-base
    tasks_from: ensure_openssl_installed

- name: Ensure Appservice IRC paths exist
  ansible.builtin.file:
    path: "{{ item.path }}"
    state: directory
    mode: '0750'
    owner: "{{ matrix_user_name }}"
    group: "{{ matrix_group_name }}"
  with_items:
    - {path: "{{ matrix_appservice_irc_base_path }}", when: true}
    - {path: "{{ matrix_appservice_irc_config_path }}", when: true}
    - {path: "{{ matrix_appservice_irc_data_path }}", when: true}
    - {path: "{{ matrix_appservice_irc_container_src_files_path }}", when: "{{ matrix_appservice_irc_container_image_self_build }}"}
  when: item.when | bool

- name: Check if an old passkey file already exists
  ansible.builtin.stat:
    path: "{{ matrix_appservice_irc_base_path }}/passkey.pem"
  register: matrix_appservice_irc_stat_passkey

- when: "matrix_appservice_irc_stat_passkey.stat.exists"
  block:
    - name: (Data relocation) Ensure matrix-appservice-irc.service is stopped
      ansible.builtin.service:
        name: matrix-appservice-irc
        state: stopped
        daemon_reload: true
      failed_when: false

    - name: (Data relocation) Move AppService IRC passkey.pem file to ./data directory
      ansible.builtin.command:
        cmd: "mv {{ matrix_appservice_irc_base_path }}/passkey.pem {{ matrix_appservice_irc_data_path }}/passkey.pem"
      register: matrix_appservice_irc_move_passkey_result
      changed_when: matrix_appservice_irc_move_passkey_result.rc == 0

    - name: (Data relocation) Move AppService IRC database files to ./data directory
      ansible.builtin.command:
        cmd: "mv {{ matrix_appservice_irc_base_path }}/{{ item }} {{ matrix_appservice_irc_data_path }}/{{ item }}"
      register: matrix_appservice_irc_move_dbs_result
      changed_when: matrix_appservice_irc_move_dbs_result.rc == 0
      with_items:
        - rooms.db
        - users.db
      failed_when: false

- ansible.builtin.set_fact:
    matrix_appservice_irc_migration_requires_restart: false

- when: "matrix_appservice_irc_database_engine == 'postgres'"
  block:
    - name: Check if a nedb database already exists
      ansible.builtin.stat:
        path: "{{ matrix_appservice_irc_data_path }}/users.db"
      register: matrix_appservice_irc_nedb_database_path_local_stat_result

    - when: "matrix_appservice_irc_nedb_database_path_local_stat_result.stat.exists | bool"
      block:
        - ansible.builtin.include_tasks: "{{ role_path }}/tasks/migrate_nedb_to_postgres.yml"

        - ansible.builtin.set_fact:
            matrix_appservice_irc_migration_requires_restart: true

- name: Ensure Appservice IRC image is pulled
  community.docker.docker_image_pull:
    name: "{{ matrix_appservice_irc_container_image }}"
    pull: always
  when: "matrix_appservice_irc_enabled | bool and not matrix_appservice_irc_container_image_self_build | bool"
  register: matrix_appservice_irc_container_image_pull_result
  retries: "{{ devture_playbook_help_container_retries_count }}"
  delay: "{{ devture_playbook_help_container_retries_delay }}"
  until: matrix_appservice_irc_container_image_pull_result is not failed

- name: Ensure matrix-appservice-irc repository is present when self-building
  ansible.builtin.git:
    repo: "{{ matrix_appservice_irc_container_repo }}"
    version: "{{ matrix_appservice_irc_container_repo_version }}"
    dest: "{{ matrix_appservice_irc_container_src_files_path }}"
    force: "yes"
  become: true
  become_user: "{{ matrix_user_name }}"
  register: matrix_appservice_irc_git_pull_results
  when: "matrix_appservice_irc_enabled | bool and matrix_appservice_irc_container_image_self_build | bool"

- name: Ensure matrix-appservice-irc Docker image is built
  community.docker.docker_image_build:
    name: "{{ matrix_appservice_irc_container_image }}"
    dockerfile: Dockerfile
    path: "{{ matrix_appservice_irc_container_src_files_path }}"
    pull: true
    rebuild: "{{ 'always' if matrix_appservice_irc_git_pull_results.changed | bool else 'never' }}"
  when: "matrix_appservice_irc_enabled | bool and matrix_appservice_irc_container_image_self_build | bool and matrix_appservice_irc_git_pull_results.changed"
  register: matrix_appservice_irc_container_image_build_result

- name: Ensure Matrix Appservice IRC config installed
  ansible.builtin.copy:
    content: "{{ matrix_appservice_irc_configuration | to_nice_yaml(indent=2, width=999999) }}"
    dest: "{{ matrix_appservice_irc_config_path }}/config.yaml"
    mode: '0644'
    owner: "{{ matrix_user_name }}"
    group: "{{ matrix_group_name }}"
  register: matrix_appservice_irc_config_result

- name: Ensure Matrix Appservice IRC labels file installed
  ansible.builtin.template:
    src: "{{ role_path }}/templates/labels.j2"
    dest: "{{ matrix_appservice_irc_base_path }}/labels"
    mode: '0644'
    owner: "{{ matrix_user_name }}"
    group: "{{ matrix_group_name }}"
  register: matrix_appservice_irc_labels_result

- name: Generate Appservice IRC passkey if it doesn't exist
  ansible.builtin.shell:
    cmd: "{{ matrix_host_command_openssl }} genpkey -out {{ matrix_appservice_irc_data_path }}/passkey.pem -outform PEM -algorithm RSA -pkeyopt rsa_keygen_bits:2048"
    creates: "{{ matrix_appservice_irc_data_path }}/passkey.pem"
  become: true
  become_user: "{{ matrix_user_name }}"

- name: Check if an authenticated media signing key exists
  ansible.builtin.stat:
    path: "{{ matrix_appservice_irc_data_path }}/auth-media.jwk"
  register: matrix_appservice_irc_stat_auth_media_key

- when: not matrix_appservice_irc_stat_auth_media_key.stat.exists
  block:
    - name: Generate IRC appservice signing key for authenticated media
      community.docker.docker_container:
        name: "create-auth-media-jwk-key"
        image: "{{ matrix_appservice_irc_container_image }}"
        cleanup: true
        network_mode: none
        entrypoint: "/usr/local/bin/node"
        command: >
          -e "const webcrypto = require('node:crypto');
          async function main() {
              const key = await webcrypto.subtle.generateKey({
                  name: 'HMAC',
                  hash: 'SHA-512',
              }, true, ['sign', 'verify']);
              console.log(JSON.stringify(await webcrypto.subtle.exportKey('jwk', key), undefined, 4));
          }
          main().then(() => process.exit(0)).catch(err => { throw err });"
        detach: false
      register: matrix_appservice_irc_jwk_result

    - name: Write auth media signing key to file
      ansible.builtin.copy:
        content: "{{ matrix_appservice_irc_jwk_result.container.Output }}"
        dest: "{{ matrix_appservice_irc_data_path }}/auth-media.jwk"
        mode: "0644"
        owner: "{{ matrix_user_name }}"
        group: "{{ matrix_group_name }}"

# In the past, we used to generate the passkey.pem file with root, so permissions may not be okay.
# Fix it.
- name: (Migration) Ensure Appservice IRC passkey permissions are okay
  ansible.builtin.file:
    path: "{{ matrix_appservice_irc_data_path }}/passkey.pem"
    mode: '0644'
    owner: "{{ matrix_user_name }}"
    group: "{{ matrix_group_name }}"

# Ideally, we'd like to generate the final registration.yaml file by ourselves.
#
# However, the IRC bridge supports multiple servers, which leads to multiple
# users/aliases/rooms rules in the registration file.
#
# Generating a proper file by ourselves is complicated and may lead to deviation
# from what the bridge is doing.
#
# Instead, we do another hacky thing - asking the bridge to generate a template,
# and then we parse it and fix it up with our own AS/HS token.
# We need to do this, because:
# - we'd like to have an up-to-date registration file
# - we can achieve this by asking the bridge to rebuild it each time
# - however, the bridge insists on regenerating all tokens each time
# - .. which is not friendly for integrating with the homeserver
#
# So we have a hybrid approach. We ask the bridge to always generate
# an up-to-date file, and we fix it up with some static values later on,
# to produce a final registration.yaml file, as we desire.
- name: Generate Appservice IRC registration-template.yaml
  ansible.builtin.shell: >-
    {{ devture_systemd_docker_base_host_command_docker }} run --rm --name matrix-appservice-irc-gen
    --user={{ matrix_user_uid }}:{{ matrix_user_gid }}
    --cap-drop=ALL
    --mount type=bind,src={{ matrix_appservice_irc_config_path }},dst=/config
    --mount type=bind,src={{ matrix_appservice_irc_data_path }},dst=/data
    --entrypoint=/bin/bash
    {{ matrix_appservice_irc_container_image }}
    -c
    'node app.js
    -r
    -f /config/registration-template.yaml
    -u "http://matrix-appservice-irc:9999"
    -c /config/config.yaml
    -l irc_bot'
  changed_when: false

- name: Read Appservice IRC registration-template.yaml
  ansible.builtin.slurp:
    src: "{{ matrix_appservice_irc_config_path }}/registration-template.yaml"
  register: matrix_appservice_irc_registration_template_slurp

- name: Remove unnecessary Appservice IRC registration-template.yaml
  ansible.builtin.file:
    path: "{{ matrix_appservice_irc_config_path }}/registration-template.yaml"
    state: absent
  changed_when: false

- name: Parse registration-template.yaml
  ansible.builtin.set_fact:
    matrix_appservice_irc_registration_template: "{{ matrix_appservice_irc_registration_template_slurp['content'] | b64decode | from_yaml }}"

- name: Combine registration-template.yaml and own registration override config
  ansible.builtin.set_fact:
    matrix_appservice_irc_registration: "{{ matrix_appservice_irc_registration_template | combine(matrix_appservice_irc_registration_override, recursive=True) }}"

- name: Ensure Appservice IRC registration.yaml installed
  ansible.builtin.copy:
    content: "{{ matrix_appservice_irc_registration | to_nice_yaml(indent=2, width=999999) }}"
    dest: "{{ matrix_appservice_irc_config_path }}/registration.yaml"
    mode: '0644'
    owner: "{{ matrix_user_name }}"
    group: "{{ matrix_group_name }}"
  register: matrix_appservice_irc_registration_result

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

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

- name: Determine whether matrix-appservice-irc needs a restart
  ansible.builtin.set_fact:
    matrix_appservice_irc_restart_necessary: >-
      {{
        matrix_appservice_irc_migration_requires_restart | default(false)
        or matrix_appservice_irc_config_result.changed | default(false)
        or matrix_appservice_irc_labels_result.changed | default(false)
        or matrix_appservice_irc_registration_result.changed | default(false)
        or matrix_appservice_irc_systemd_service_result.changed | default(false)
        or matrix_appservice_irc_container_image_pull_result.changed | default(false)
        or matrix_appservice_irc_container_image_build_result.changed | default(false)
      }}

- name: Ensure matrix-appservice-irc.service restarted, if necessary
  ansible.builtin.service:
    name: "matrix-appservice-irc.service"
    state: restarted
    daemon_reload: true
  when: "matrix_appservice_irc_migration_requires_restart | bool"
