---
# The home-server project produces a multi-purpose setup using Ansible.
# Copyright © 2018 Y. Gablin, under the GPL-3.0-or-later license.
# Full licensing information in the LICENSE file, or gnu.org/licences/gpl-3.0.txt if the file is missing.

### UPSTREAM BEGIN ⇒ ###
- name: pull prerequisites from upstream
  include_role: name=etckeeper.inc allow_duplicates=true tasks_from=upstream.yml
  vars:
    msg: PostgreSQL
### ⇐ UPSTREAM BEGIN ###

- name: install software
  package:
    name: "{{item}}"
    state: present
  with_items:
    - postgresql
    - postgresql-old-upgrade
    - python-psycopg2

### UPSTREAM END ⇒ ###
- name: merge upstream
  include_role: name=etckeeper.inc allow_duplicates=true tasks_from=merge.yml
  vars:
    msg: PostgreSQL
### ⇐ UPSTREAM END ###

- name: ensure ownership of postgresql directory
  file:
    path: /var/lib/postgres
    state: directory
    owner: postgres
    group: postgres

- name: init PostgreSQL cluster
  command: >
    bash -c "initdb --locale {{locales_default}} -E UTF8
    -D /var/lib/postgres/data
    -A md5 --pwfile <(echo \"$PGPASSWORD\")"
  environment:
    PGPASSWORD: "{{pgpassword}}"
  become: true
  become_user: postgres
  args:
    creates: /var/lib/postgres/data/*
  notify:
    - restart postgresql.service

- name: allow local peer authent to PostgreSQL
  lineinfile:
    path: /var/lib/postgres/data/pg_hba.conf
    regexp: '^local.*peer\s*$'
    line: 'local   all             postgres                                peer'
    insertafter: '^#\s*TYPE\s+DATABASE\s'
  notify:
    - restart postgresql.service

- name: include custom settings
  lineinfile:
    path: /var/lib/postgres/data/postgresql.conf
    line: "include '/etc/postgresql.conf'"
    insertafter: EOF
  notify:
    - restart postgresql.service

- name: send custom settings
  copy:
    src: files/postgresql.conf
    dest: /etc/postgresql.conf
    owner: root
    group: postgres
    mode: 0640
  notify:
    - restart postgresql.service

- name: make sure /etc/systemd/system/postgresql.service.d exists
  file:
    path: /etc/systemd/system/postgresql.service.d
    state: directory
    mode: 0755

- name: override postgresql.service settings
  copy:
    content: |
      [Unit]
      After=systemd-tmpfiles-setup.service
    dest: /etc/systemd/system/postgresql.service.d/shared_sockets.conf
    mode: 0644

# TODO: https://www.postgresql.org/docs/current/static/creating-cluster.html

- name: enable PostgreSQL
  systemd:
    daemon_reload: true
    name: postgresql.service
    enabled: true

### LOCAL COMMIT ⇒ ###
- name: commit local changes
  include_role: name=etckeeper.inc allow_duplicates=true tasks_from=local.yml
  vars:
    msg: PostgreSQL
### ⇐ LOCAL COMMIT ###
- meta: flush_handlers