# TO DO:
# - Validate input vars postgresql_install & postgresql_enabled
# - Put ~13 stanzas just below into install.yml
#   - Triggered by... 'when: postgresql_installed is undefined'

- name: Install 'postgresql' package
  package:
    name: postgresql
    state: present

- name: Install 'postgresql-client' package (debuntu)
  package:
    name: postgresql-client
    state: present
  when: is_debuntu | bool

- name: Install 'postgresql-server' package (OS's other than debuntu)
  package:
    name: postgresql-server
    state: present
  when: not is_debuntu

- name: Install /etc/systemd/system/postgresql-iiab.service from template
  template:
    src: postgresql-iiab.service
    dest: /etc/systemd/system/postgresql-iiab.service
    # owner: root
    # group: root
    # mode: '0644'

- name: Create PostgreSQL data dir /library/pgsql-iiab, owned by postgres:postgres
  file:
    path: /library/pgsql-iiab
    owner: postgres
    group: postgres
    mode: '0700'
    state: directory

- name: Make sure locale {{ postgresql_locale }} is enabled (debuntu)    # en_US.UTF-8
  lineinfile:
    dest: /etc/locale.gen
    line: "{{ postgresql_locale }} UTF-8"
  when: is_debuntu | bool

- name: Generate locales (debuntu)
  command: /usr/sbin/locale-gen
  when: is_debuntu | bool

- name: Initialize the PostgreSQL db, creating /library/pgsql-iiab/pg_hba.conf (debuntu)
  #command: su - postgres -c "/usr/lib/postgresql/{{ postgresql_version }}/bin/initdb -E 'UTF-8' --locale={{ postgresql_locale }} -D /library/pgsql-iiab"
  command: /usr/lib/postgresql/{{ postgresql_version }}/bin/initdb -E 'UTF-8' --locale={{ postgresql_locale }} -D /library/pgsql-iiab
  args:
    creates: /library/pgsql-iiab/pg_hba.conf
  become: yes
  become_user: postgres
  when: is_debuntu | bool

- name: Initialize the PostgreSQL db, creating /library/pgsql-iiab/pg_hba.conf (OS's other than debuntu)
  #command: su - postgres -c "/usr/bin/initdb -E 'UTF-8' --lc-collate={{ postgresql_locale }} --lc-ctype={{ postgresql_locale }} -D /library/pgsql-iiab"
  command: /usr/bin/initdb -E 'UTF-8' --lc-collate={{ postgresql_locale }} --lc-ctype={{ postgresql_locale }} -D /library/pgsql-iiab
  args:
    creates: /library/pgsql-iiab/pg_hba.conf
  become: yes
  become_user: postgres
  when: not is_debuntu

- name: Install /library/pgsql-iiab/postgresql.conf owned by postgres:postgres, from template
  template:
    backup: yes
    src: postgresql.conf.j2
    dest: /library/pgsql-iiab/postgresql.conf
    owner: postgres
    group: postgres
    mode: '0640'

# Likely No Longer Nec!  Given stanza below does the same...
#- name: 'Stop postgresql service: /etc/init.d/postgresql stop (debuntu)'
#  command: "/etc/init.d/postgresql stop"
#  ignore_errors: True
#  when: postgresql_install and is_debuntu

- name: Disable & Stop stock 'postgresql' systemd service
  systemd:
    name: postgresql
    state: stopped
    enabled: no


# RECORD PostgreSQL AS INSTALLED

- name: "Set 'postgresql_installed: True'"
  set_fact:
    postgresql_installed: True

- name: "Add 'postgresql_installed: True' to {{ iiab_state_file }}"
  lineinfile:
    dest: "{{ iiab_state_file }}"    # /etc/iiab/iiab_state.yml
    regexp: '^postgresql_installed'
    line: 'postgresql_installed: True'


- name: Enable & Start 'postgresql-iiab' systemd service, if 'postgresql_enabled'
  systemd:
    name: postgresql-iiab
    state: started
    enabled: yes
  when: postgresql_enabled | bool

- name: Disable 'postgresql-iiab' systemd service, if not 'postgresql_enabled'
  systemd:
    name: postgresql-iiab
    state: stopped
    enabled: no
  when: not postgresql_enabled


- name: Add 'postgresql' variable values to {{ iiab_ini_file }}
  ini_file:
    path: "{{ iiab_ini_file }}"
    section: postgresql
    option: "{{ item.option }}"
    value: "{{ item.value | string }}"
  with_items:
    - option: name
      value: PostgreSQL
    - option: description
      value: '"PostgreSQL is a powerful, open source object-relational database system."'
    - option: install
      value: "{{ postgresql_install }}"
    - option: enabled
      value: "{{ postgresql_enabled }}"