- name: Create backup directory
  file:
    path: '{{ backup_dir }}'
    state: directory
    owner: postgres
    group: postgres
    mode: '0755'
  tags:
    - backup

- name: Perform database backup
  command: >
    pg_dump -U {{ postgres_user }} -F c -f "{{ backup_dir }}/db_backup_{{ postgres_db }}_{{ ansible_date_time.iso8601 }}.sql" {{ postgres_db }}
  become_user: postgres
  environment:
    PGPASSWORD: '{{ postgres_password }}'
  tags:
    - backup

- name: Daily cron full backup
  cron:
    name: 'PostgreSQL daily full backup'
    user: postgres
    minute: '0'
    hour: '1'
    job: "pg_dump -U {{ postgres_user }} -F c {{ postgres_db }} > {{ backup_dir }}/full_db_backup_{{ postgres_db }}_$(date +\\%F-\\%H-%M).sql"
  environment:
    PGPASSWORD: '{{ postgres_password }}'
  tags:
    - backup

- name: Hourly cron incremental backup
  cron:
    name: 'PostgreSQL hourly incremental backup'
    user: postgres
    minute: '0'
    job: "pg_dump -U {{ postgres_user }} -F c --data-only --file=\"{{ backup_dir }}/incremental_db_backup_{{ postgres_db }}_$(date +\\%F-\\%H-%M).sql\" {{ postgres_db }}"
  environment:
    PGPASSWORD: '{{ postgres_password }}'
  tags:
    - backup