- name: install postfix
  apt:
    pkg:
      - postfix

- name: install prometheus postfix exporter
  apt:
    pkg:
    - prometheus-postfix-exporter

- name: configure prometheus postfix exporter
  template:
    src: prometheus-postfix-exporter.j2
    dest: /etc/default/prometheus-postfix-exporter
    owner: root
    group: root
    mode: 0644
  notify:
  - restart prometheus-postfix-exporter

- name: Install and setup utilities for LDAP
  when: postfix.ldap.enable
  block:
    - name: install utility packages for LDAP auth & config
      apt:
        pkg:
          - postfix-ldap
          - sasl2-bin

    - name: Configure saslauthd
      template:
        src: saslauthd.conf.j2
        dest: /etc/saslauthd.conf
        owner: root
        group: root
        mode: 0644
      notify:
      - restart saslauthd

    - name: Copy saslauthd defaults
      copy:
        src: saslauthd-defaults
        dest: /etc/default/saslauthd
        owner: root
        group: root
        mode: 0644
      notify:
        - restart saslauthd

    - name: Copy smtpd.conf
      copy:
        src: smtpd.conf
        dest: /etc/postfix/sasl/smtpd.conf
        owner: root
        group: root
        mode: 0644
      notify:
        - restart postfix

    - name: Add postfix to sasl group
      user:
        name: postfix
        append: yes
        groups: sasl
      notify:
        - restart postfix

- name: remove exim4 package
  apt:
    name: exim4
    state: absent

- name: copy postfix config
  template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    owner: root
    group: root
    mode: 0644
  with_items:
    - { src: "main.cf.j2", dest: "/etc/postfix/main.cf" }
    - { src: "master.cf.j2", dest: "/etc/postfix/master.cf" }
    - { src: "virtual-aliases.cf.j2", dest: "/etc/postfix/virtual-aliases.cf" }
    - { src: "header_checks.j2", dest: "/etc/postfix/header_checks" }
  notify:
  - restart postfix

- name: copy postfix maps
  template:
    src: maps.j2
    dest: "{{ item }}"
    owner: root
    group: root
    mode: 0644
  with_items: "{{ postfix.postfixmaps }}"
  notify:
  - restart postfix

- name: create virtual table
  template:
    src: virtual.in.j2
    dest: /etc/postfix/virtual.in
    owner: root
    group: root
    mode: 0644
  register: create_virtual_table

- name: check virtual table db
  loop:
  - /etc/postfix/virtual.in
  - /etc/postfix/virtual.db
  ansible.builtin.stat:
    path: '{{ item }}'
  register: virtual_table_stats

- name: update virtual table db
  when: create_virtual_table.changed
        or not virtual_table_stats.results[1].stat.exists
        or virtual_table_stats.results[0].stat.mtime > virtual_table_stats.results[1].stat.mtime
  ansible.builtin.shell: 'postmap hash:/etc/postfix/virtual.in && mv /etc/postfix/virtual.in.db /etc/postfix/virtual.db'

- name: create sender logins table
  template:
    src: sender_logins.in.j2
    dest: /etc/postfix/sender_logins.in
    owner: root
    group: root
    mode: 0644
  register: create_sender_logins_table

- name: check sender logins table db
  loop:
  - /etc/postfix/sender_logins.in
  - /etc/postfix/sender_logins.db
  ansible.builtin.stat:
    path: '{{ item }}'
  register: sender_logins_table_stats

- name: update sender logins table db
  when: create_sender_logins_table.changed
        or not sender_logins_table_stats.results[1].stat.exists
        or sender_logins_table_stats.results[0].stat.mtime > sender_logins_table_stats.results[1].stat.mtime
  ansible.builtin.shell: 'postmap hash:/etc/postfix/sender_logins.in && mv /etc/postfix/sender_logins.in.db /etc/postfix/sender_logins.db'