# The old mailman2 exim config refers to this file. Write it out
# to make basic testing happy, but we may need to clean it up or
# modify it for mailman3.
- name: Write /etc/aliases.domain
  template:
    src: "domain_aliases.j2"
    dest: "/etc/aliases.domain"
    mode: '0444'

- name: Create Mailman Group
  group:
    name: mailman
    gid: 10010
    system: yes

- name: Create Mailman User
  user:
    name: mailman
    uid: 10010
    comment: Mailman User
    shell: /bin/bash
    home: /var/lib/mailman
    group: mailman
    create_home: yes
    system: yes

#### Install Mailman ####

- name: Ensure Mailman core volume directory exists
  file:
    state: directory
    path: "/var/lib/mailman/core"
    # TODO: undo for https://github.com/maxking/docker-mailman/issues/550
    owner: 100
    group: 65533
    mode: '0755'

- name: Copy our mailman-extra.cfg for mailman-core
  template:
    src: mailman-extra.cfg.j2
    dest: /var/lib/mailman/core/mailman-extra.cfg
    # TODO: undo for https://github.com/maxking/docker-mailman/issues/550
    owner: 100
    group: 65533
    mode: '0644'
  notify: mailman restart containers

- name: Ensure Mailman database volume directory exists
  file:
    state: directory
    path: "/var/lib/mailman/database"
    # TODO: undo for https://github.com/maxking/docker-mailman/issues/550
    owner: 999
    group: 999
    mode: '0755'

- name: Ensure Mailman web volume directories exist
  file:
    state: directory
    path: "/var/lib/mailman/{{ item }}"
    # TODO: undo for https://github.com/maxking/docker-mailman/issues/550
    owner: 100
    group: 101
    mode: '0755'
  loop:
    - import
    - web
    - web-data
    - web-data/fulltext_index
    - web-data/mm2archives

- name: Copy our overridden settings.py for mailman-web
  copy:
    src: web-settings.py
    dest: /var/lib/mailman/web/settings.py
    # TODO: undo for https://github.com/maxking/docker-mailman/issues/550
    owner: 100
    group: 101
    mode: '0644'
  notify: mailman restart containers

- name: Check for initial setup flag file
  stat:
    path: /var/lib/mailman/bootstrapped
  register: _mailman_bootstrapped

# https://docs.mailman3.org/en/latest/faq.html#the-domain-name-displayed-in-hyperkitty-shows-example-com-or-something-else
- name: Temporarily turn off magic domain guessing
  lineinfile:
    state: present
    backrefs: yes
    path: /var/lib/mailman/web/settings.py
    regexp: '^SITE_ID = 0$'
    line: 'SITE_ID = 1'
  when: not _mailman_bootstrapped.stat.exists

- name: Copy our settings_local.py for mailman-web
  copy:
    src: web-settings_local.py
    dest: /var/lib/mailman/web-data/settings_local.py
    # TODO: undo for https://github.com/maxking/docker-mailman/issues/550
    owner: 100
    group: 101
    mode: '0644'
  notify: mailman restart containers

- name: Copy our max_allowed_packet override config
  copy:
    src: 99-max_allowed_packet.cnf
    dest: /var/lib/mailman/99-max_allowed_packet.cnf
    owner: 999
    group: 999
    mode: '0644'
  notify: mailman restart containers

- name: Ensure /etc/mailman-compose directory
  file:
    state: directory
    path: /etc/mailman-compose
    mode: '0755'

- name: Put docker-compose file in place
  template:
    src: docker-compose.yaml.j2
    dest: /etc/mailman-compose/docker-compose.yaml
    mode: '0600'
  notify: mailman restart containers

- name: Run docker-compose pull
  shell:
    cmd: docker-compose pull
    chdir: /etc/mailman-compose/

- name: Run docker-compose up
  shell:
    cmd: docker-compose up -d
    chdir: /etc/mailman-compose/
  register: mailman_dcup

- name: Run docker prune to cleanup unneeded images
  shell:
    cmd: docker image prune -f

- name: Install apache2
  package:
    name:
      - apache2
      - apache2-utils
    state: present

- name: Apache modules
  apache2_module:
    state: present
    name: "{{ a2_mod }}"
  loop:
    - authz_host
    - proxy
    - proxy_uwsgi
    - ssl
    - rewrite
  loop_control:
    loop_var: a2_mod
  notify: mailman restart apache2

- name: Make sure packaged default site disabled
  command: a2dissite 000-default.conf
  args:
    removes: /etc/apache2/sites-enabled/000-default.conf

- name: Create mailman vhost config
  template:
    src: mailman.vhost.j2
    dest: "/etc/apache2/sites-enabled/50-{{ mailman_sites.0.listdomain }}.conf"
    owner: root
    group: root
    mode: '0644'
  notify: mailman reload apache2

- name: Enable apache2 server
  service:
    name: "apache2"
    enabled: yes

#### Configure Mailman Services ####

- name: Wait for mm3 REST API to be up and running
  uri:
    url: 'http://localhost:8001/3.1/domains'
    url_username: restadmin
    url_password: "{{ mailman3_rest_password }}"
    force_basic_auth: yes
    method: GET
  register: mm_rest_api_up
  delay: 1
  retries: 300
  until: mm_rest_api_up and mm_rest_api_up.status == 200
  no_log: true

# It has been difficult to nail down a reliable mathod for determining
# when the database is sufficiently populated that we can create the django
# admin user. We apply a number of approaches in response to this. If we
# can identify a single method that is reliable this list can be trimmed.
- name: Wait for DB to be populated
  command: >
    docker exec mailman-compose_database_1 bash -c
    'mysql -u mailman -p"$MYSQL_PASSWORD" -D mailmandb -e
    "SHOW TABLES LIKE \"auth_user\";"'
  register: django_db_exists
  delay: 1
  retries: 300
  until: django_db_exists.stdout_lines | length > 1 and django_db_exists.stdout_lines[1] == "auth_user"

- name: Wait for DB to be populated second approach
  command: >
    docker exec mailman-core sh -c 'alembic -c /usr/lib/python*/site-packages/mailman/config/alembic.cfg current'
  register: alembic_version
  delay: 1
  retries: 300
  until: alembic_version.stdout_lines | length > 0 and "(head)" in alembic_version.stdout_lines[0]

- name: Wait for DB to be populated third approach
  shell: >
    docker exec mailman-web bash -c
    'python3 manage.py showmigrations' |
    grep -q '^ \[ \] [0-9]\+_.*'
  register: django_db_migrations
  delay: 1
  retries: 300
  failed_when: false
  # When grep stops matching the empty '[ ]' that indicates all migrations
  # are marked with '[X]' and are complete. Grep returns non zero when we
  # reach this point.
  until: django_db_migrations.rc != 0

- name: Check if django admin user exists
  command: >
    docker exec mailman-compose_database_1 bash -c
    'mysql -u mailman -p"$MYSQL_PASSWORD" -D mailmandb -e
    "SELECT COUNT(id) FROM auth_user WHERE id = 1 AND is_superuser = 1;"'
  register: django_admin_exists

- name: Create django admin user
  when: django_admin_exists.stdout_lines[1] == "0"
  command: >
    docker exec mailman-web bash -c
    "DJANGO_SUPERUSER_PASSWORD={{ mailman3_admin_password }}
    python3 manage.py createsuperuser --no-input
    --username {{ mailman3_admin_user }}
    --email '{{ mailman3_admin_email }}'"
  no_log: true

- name: Complete new server bootstrapping
  when: not _mailman_bootstrapped.stat.exists
  block:
  - name: Run docker-compose down
    shell:
      cmd: docker-compose down
      chdir: /etc/mailman-compose/

  - name: Turn magic domain guessing back on
    lineinfile:
      state: present
      backrefs: yes
      path: /var/lib/mailman/web/settings.py
      regexp: '^SITE_ID = 0$'
      line: 'SITE_ID = 1'

  - name: Create the bootstrapped flag file
    copy:
      content: ""
      dest: /var/lib/mailman/bootstrapped
      force: no
      owner: 100
      group: 101
      mode: '0644'

  - name: Run docker-compose up
    shell:
      cmd: docker-compose up -d
      chdir: /etc/mailman-compose/

  - name: Wait for mm3 REST API to be up and running
    uri:
      url: 'http://localhost:8001/3.1/domains'
      url_username: restadmin
      url_password: "{{ mailman3_rest_password }}"
      force_basic_auth: yes
      method: GET
    register: mm_rest_api_up
    delay: 1
    retries: 300
    until: mm_rest_api_up and mm_rest_api_up.status == 200
    no_log: true

- name: Create lists in mm3
  include_tasks: create_lists.yaml
  loop: "{{ mailman_sites }}"
  loop_control:
    loop_var: mm_site

#### Logrotate for service logs ####

- name: Rotate mailman logs
  include_role:
    name: logrotate
  vars:
    logrotate_rotate: 90
    logrotate_file_name: '/var/lib/mailman/web-data/logs/*.log'

#### Database Backups ####

- name: Create db backup dest
  file:
    state: directory
    path: /var/backups/mailman-mariadb
    mode: 0700
    owner: root
    group: root

- name: Set up cron job to backup the database
  cron:
    name: mailman-db-backup
    state: present
    user: root
    job: >
      /usr/local/bin/docker-compose -f /etc/mailman-compose/docker-compose.yaml exec -T database
      bash -c '/usr/bin/mysqldump --opt --databases mailmandb --single-transaction -uroot -p"$MYSQL_ROOT_PASSWORD"' |
      gzip -9 > /var/backups/mailman-mariadb/mailman-mariadb.sql.gz
    minute: 14
    hour: 5

- name: Rotate db backups
  include_role:
    name: logrotate
  vars:
    logrotate_file_name: /var/backups/mailman-mariadb/mailman-mariadb.sql.gz
    logrotate_compress: false

- name: Setup db backup streaming job
  block:
    - name: Create backup streaming config dir
      file:
        path: /etc/borg-streams
        state: directory

    - name: Create db streaming file
      copy:
        content: >-
            /usr/local/bin/docker-compose -f /etc/mailman-compose/docker-compose.yaml exec -T database
            bash -c '/usr/bin/mysqldump --skip-extended-insert --databases mailmandb --single-transaction -uroot -p"$MYSQL_ROOT_PASSWORD"'
        dest: /etc/borg-streams/mysql