- block:
  - name: check if system table is missing
    community.postgresql.postgresql_query:
      db: "{{ database_name | mandatory }}"
      query: SELECT to_regclass('public.system');
    register: db_result
    changed_when: false

  - name: set db_is_empty fact
    set_fact:
      db_is_empty: "{{ (db_result.query_result is defined) and (db_result.query_result[0].to_regclass is none) }}"
  delegate_to: postgres


- name: fetch script from mail to ansible
  fetch:
    src: "{{ mail_dir }}/SQL/postgres.initial.sql"
    dest: /tmp/
    flat: yes
  register: fetched
  when: db_is_empty


- block:
  - name: create temporary file on postgres for holding the script
    tempfile:
      state: file
    register: tf

  - name: upload script
    copy:
      src: "{{ fetched.dest }}"
      dest: "{{ tf.path }}"
      force: yes

  - name: execute script
    community.postgresql.postgresql_query:
      db: "{{ database_name | mandatory }}"
      path_to_script: "{{ tf.path }}"
      as_single_query: no

  - name: remove temp script
    file:
      path: "{{ tf.path }}"
      state: absent

  when: db_is_empty
  delegate_to: postgres


- name: remove fetched script
  file:
    path: "{{ fetched.dest }}"
    state: absent
  when: db_is_empty


- name: update db privileges
  include_tasks: tasks/psql_grant_privs.yml
  when: db_is_empty