ansible_role_restic/tasks/install.yml

---
- name: (INSTALL) install and verify restic binary
  become: true
  block:
    - name: (INSTALL) Download client binary
      ansible.builtin.get_url:
        url: '{{ restic_url }}'
        dest: '{{ restic_download_path }}/restic.bz2'
        force: true
        mode: 0644
      register: get_url_restic

    # TODO: This needs to become independent of the shell module to actually work
    - name: (INSTALL) Decompress the binary
      ansible.builtin.shell: "bzip2 -dc {{ get_url_restic.dest }} > {{ restic_bin_path }}"
      args:
        creates: '{{ restic_download_path }}/bin/restic-{{ restic_version }}'

    - name: (INSTALL) Ensure permissions are correct
      ansible.builtin.file:
        path: '{{ restic_download_path }}/bin/restic-{{ restic_version }}'
        mode: '0755'
        owner: '{{ restic_dir_owner }}'
        group: '{{ restic_dir_group }}'

    - name: (INSTALL) Test the binary
      ansible.builtin.command: "{{ restic_bin_path }} version"
      ignore_errors: true
      register: restic_test_result
      changed_when: false

    - name: (INSTALL) Remove faulty binary
      ansible.builtin.file:
        path: '{{ restic_bin_path }}'
        state: absent
      when: "'FAILED' in restic_test_result.stderr"

    - name: (INSTALL) Fail if restic could not be installed
      ansible.builtin.fail:
        msg: >-
          Restic binary has been faulty and has been removed.
          Try to re-run the role and make sure you have bzip2 installed!
      when: "'FAILED' in restic_test_result.stderr"

    - name: (INSTALL) Create symbolic link to the correct version
      ansible.builtin.file:
        src: '{{ restic_download_path }}/bin/restic-{{ restic_version }}'
        path: '{{ restic_install_path }}/restic'
        state: link
        force: true
  rescue:
    - name: (INSTALL) try restic self-update
      become: true
      ansible.builtin.command: "{{ restic_install_path }}/restic self-update"
      changed_when: true