---
- name: Restoring OneLab (1.27.0)
  hosts: localhost
  vars_prompt:
    - name: "userchoice"
      prompt: "Confirm OneLab 1.27.0 restore: yes/no"
      private: no
  vars:
    onelab_path: '../..'
    onelab_images_path: '../../../onelab-images-1.27.0.tar.gz'
    main_path: '../../..'

  tasks: 
    - name: Checking if the OneLab images bundle is existing
      stat:
        path: "{{ onelab_images_path }}"
        get_checksum: no
      register: docker_images_tar

    - name: Aborting the restore process
      fail:
        msg: Aborting the restore process
      when: userchoice != "yes"

    # Stop OneLab if OneLab is running
    - name: Checking if OneLab is running
      shell: docker stack ls | grep 'onelab' | wc -l
      become: true
      register: stack_count

    # Stop OneLab (unkown version) if OneLab is running
    - include_tasks: "{{ onelab_path }}/installation/latest/app/playbooks/tasks/stop-onelab.yml"
      when: stack_count.stdout != "0"
    - include_tasks: "{{ onelab_path }}/installation/latest/app/playbooks/tasks/stop-proxy.yml"
      when: stack_count.stdout != "0"

    # Load docker images
    - name: Loading Docker images
      debug:
        msg:
        - "Loading images could take few minutes, please do not interrupt"
      when: (docker_images_tar is defined) and (docker_images_tar.stat.exists)

    - name: Loading OneLab images from the tar file
      shell:
        docker load --input {{ onelab_images_path }}
      become: true
      when: (docker_images_tar is defined) and (docker_images_tar.stat.exists)

    - name: Unzipping backup
      shell: |
        tar xzvf ./onelab.tar.gz -C ./../..
      become: true

    - name: Cleaning latest installation
      ansible.builtin.file:
        path: "{{ onelab_path }}/installation/latest"
        state: absent

    - name: Flagging restored version as current
      ansible.builtin.copy:
        src: ../../installation/1.27.0/
        dest: ../../installation/latest
        directory_mode: no
        remote_src: yes

    # Load configuration
    - include_vars:
        file: "{{ onelab_path }}/configurations.yml"

    # Perform reconfiguration
    - include_tasks: "{{ onelab_path }}/installation/latest/app/playbooks/tasks/reconfigure-task.yml"

    # Checking if volumes are existing
    - name: Getting the list of docker volumes
      shell: docker volume ls
      become: true
      register: volumes_result

    # Removing volumes

    - name: Resetting postgres database & cleaning cache
      shell: |
        docker volume rm onelab_pgdata -f
        docker volume rm onelab_rabbitmq_data -f
      become: true
      when: "'rabbitmq' in volumes_result.stdout or 'pgdata' in volumes_result.stdout"

    # Restoring database

    - include_tasks: "{{ onelab_path }}/installation/latest/app/playbooks/tasks/start-db-only.yml"

    - name: Restoring database
      shell: >
        docker exec -i $(docker ps --filter "name=onelab_db|onelab-db" -q) pg_restore -Upostgres -dpostgres -v -Fc  < ./db.tar.gz
      become: true

    - include_tasks: "{{ onelab_path }}/installation/latest/app/playbooks/tasks/stop-db-only.yml"

    # Start OneLab if OneLab was running
    - include_tasks: "{{ onelab_path }}/installation/latest/app/playbooks/tasks/start-proxy.yml"
      when: stack_count.stdout != "0"
    - include_tasks: "{{ onelab_path }}/installation/latest/app/playbooks/tasks/start-onelab.yml"
      when: stack_count.stdout != "0"