- name: install duplicity
  apt:
    name: duplicity
    state: present
  become: yes
- name: generate commands
  set_fact:
    backup_command: |-
      {% set source = item.0 %}
      {% set target = item.1 %}
      {% if source.source_host is defined %}
      mount_path="$(mktemp --tmpdir --directory ansible-duplicity-sshfs-XXXXXXXX)"; sshfs "{{source.source_host}}:{{source.source_path}}" $mount_path;
      {%- endif %}
      duplicity --no-print-statistics --verbosity warning
      {%- if target.encrypt_key is defined %}
       --encrypt-key "{{target.encrypt_key}}"
      {%- else %}
       --no-encryption
      {%- endif %}
      {%- for selector in source.selectors|default([]) %}
      {% if selector['option'] in ['exclude', 'include'] %}
       --{{selector['option']}}
      {%- if source.source_host is defined %}
       "{{ selector['shell_pattern'] | replace(source.source_path, '$mount_path') }}"
      {%- else %}
       "{{selector['shell_pattern']}}"
      {%- endif %}
      {%- endif %}
      {% endfor %}
      {%- if source.source_host is defined %}
       --allow-source-mismatch "$mount_path"
      {%- else %}
       "{{source.source_path}}"
      {%- endif %}
       "{{target.url}}";
      {%- if source.source_host is defined %}
      fusermount -u "$mount_path" && rm -r "$mount_path";
      {%- endif %}
  with_subelements:
  - '{{duplicity_backups}}'
  - targets
  register: duplicity_backup_commands
- name: setup cron jobs
  blockinfile:
    dest: '/etc/crontab'
    marker: '# ANSIBLE DUPLICITY BACKUPS {mark}'
    block: |-
      {% for backup in duplicity_backup_commands.results %}
      {% set source = backup.item.0 %}
      {% set target = backup.item.1 %}
      {% for backup_job in target.backup_cron_jobs %}
      {{backup_job.minute}} {{backup_job.hour}} * * * {{source.local_user}} {{backup.ansible_facts.backup_command}}
      {% endfor %}
      {% endfor %}
  become: yes