- name: Configure mailname
  template:
    src: ./filesystem/common/etc/mailname.j2
    dest: /etc/mailname
    mode: 0644
  register: mail_mailname

- name: Configure mailutils
  template:
    src: ./filesystem/common/etc/mailutils.conf.j2
    dest: /etc/mailutils.conf
    mode: 0644

- name: Install postfix
  apt:
    name:
      - postfix
      - ca-certificates
      - libsasl2-modules

- name: Configure aliases
  template:
    src: ./filesystem/common/etc/aliases.j2
    dest: /etc/aliases
    mode: 0644
  register: mail_aliases

- name: Update aliases
  command: newaliases
  when: mail_aliases is changed

- name: Configure postfix
  template:
    src: ./filesystem/common/etc/postfix/main.cf.j2
    dest: /etc/postfix/main.cf
    mode: 0644
  register: mail_postfix_conf

- name: Configure credentials
  template:
    src: ./filesystem/common/etc/postfix/sasl_passwd.j2
    dest: /etc/postfix/sasl_passwd
    mode: 0600
  register: mail_postfix_credentials

- name: Create hash database
  command: postmap /etc/postfix/sasl_passwd
  when:
    mail_postfix_credentials is changed

- name: Set hash database permissions
  file:
    path: /etc/postfix/sasl_passwd.db
    mode: 0600

- name: Enable postfix
  systemd:
    name: postfix
    enabled: yes

- name: Start postfix
  systemd:
    name: postfix
    state: started
  register:
    mail_postfix_start

- name: Restart postfix
  systemd:
    name: postfix
    state: restarted
  when:
    (mail_mailname is changed or
    mail_aliases is changed or
    mail_postfix_conf is changed or
    mail_postfix_credentials is changed) and
    mail_postfix_start is not changed