#Debian PostgreSQL installation automatically calls initdb i.e. it initializes the cluster with default encoding and locale.
#https://wiki.debian.org/PostgreSql
#RHEL requires manual initialisation

- name: "Find out if PostgreSQL is initialized"
  stat:
    path: "/var/lib/pgsql/data/pg_hba.conf"
  register: postgres_data
  when:
    - ansible_os_family == "RedHat"

- name: "Initialize PostgreSQL"
  shell: "postgresql-setup initdb"
  when:
    - ansible_os_family == "RedHat"
    - not postgres_data.stat.exists

- name: "Start and enable services"
  become: true
  #Workaround for "Interactive authentication required" issue
  become_user: root
  service: "name={{ item }} state=started enabled=yes"
  with_items:
    - postgresql

- name: Create remote database {{ mastodon_db }}
  postgresql_db:
    name: "{{ mastodon_db }}"
    login_host: "{{ mastodon_db_login_host }}"
    login_password: "{{ mastodon_db_login_password }}"
    login_user: "{{ mastodon_db_login_user }}"
    port: "{{ mastodon_db_port }}"
  register: create_remote_db
  when:
    - mastodon_db_login_user is defined
    - mastodon_db_login_host is defined
    - mastodon_db_login_password is defined
    - mastodon_db_port is defined

- name: Create remote database user {{ mastodon_db_user }}
  postgresql_user:
    db: "{{ mastodon_db }}"
    name: "{{ mastodon_db_user }}"
    password: "{{ mastodon_db_password }}"
    login_host: "{{ mastodon_db_login_host }}"
    login_password: "{{ mastodon_db_login_password }}"
    login_user: "{{ mastodon_db_login_user }}"
    port: "{{ mastodon_db_port }}"
    role_attr_flags: CREATEDB
  register: create_remote_db_user
  when:
    - mastodon_db_login_user is defined
    - mastodon_db_login_host is defined
    - mastodon_db_login_password is defined
    - mastodon_db_port is defined

- name: Create database {{ mastodon_db }}
  become: true
  postgresql_db:
    name: "{{ mastodon_db }}"
    login_unix_socket: "{{ mastodon_db_login_unix_socket }}"
  register: create_local_db
  when: create_remote_db is skipped

- name: Create database user {{ mastodon_db_user }}
  become: true
  postgresql_user:
    db: "{{ mastodon_db }}"
    name: "{{ mastodon_db_user }}"
    password: "{{ mastodon_db_password }}"
    encrypted: true
    login_unix_socket: "{{ mastodon_db_login_unix_socket }}"
    role_attr_flags: CREATEDB
  when: create_remote_db_user is skipped