---
# Attach this app's network to the shared Postgres unit, and make sure the
# database exists.

- name: Attach Nextcloud to Postgres
  ansible.builtin.include_tasks: "{{ playbook_dir }}/../postgres/roles/attach/tasks/main.yaml"

# The restart that joins Postgres to nextcloud_net is a handler, so by default it
# would run at the end of the play — after the app has started and failed to
# resolve `db`. Flushing first also applies the Caddy restart queued by the
# register pre_task. Nothing is pending on later runs.
- name: Apply the network change before starting Nextcloud
  ansible.builtin.meta: flush_handlers

# Postgres ships one default database and only this app knows the name of its own,
# so on a fresh cluster the installer would otherwise fail with "database
# nextcloud does not exist". The retry is for the restart the flush above may have
# just done.
- name: Check whether the {{ pg_database }} database exists
  ansible.builtin.command: >-
    podman exec -e PGPASSWORD={{ pg_password }} {{ postgres_container }}
    psql -U {{ pg_user }} -d postgres -tAc
    "select datname from pg_database where datname = '{{ pg_database }}'"
  register: nextcloud_db
  until: nextcloud_db.rc == 0
  retries: 12
  delay: 5
  changed_when: false
  failed_when: false

- name: Fail if the shared Postgres is not reachable
  ansible.builtin.assert:
    that: nextcloud_db.rc == 0
    fail_msg: >-
      {{ postgres_container }} did not answer. Run postgres/playbook.yml on this
      host first — this play attaches to that cluster and creates its own database
      in it.

- name: Create the {{ pg_database }} database
  ansible.builtin.command: >-
    podman exec -e PGPASSWORD={{ pg_password }} {{ postgres_container }}
    createdb -U {{ pg_user }} -O {{ pg_user }} {{ pg_database }}
  when: nextcloud_db.stdout | trim | length == 0