---
- name: Establish some role-related facts
  set_fact:
    mongodb_major_version: "{{ mongodb_version[0:3] }}"

- name: Disable transparent huge pages on systemd systems
  include_tasks: disable_transparent_hugepages.yml
  when:
    - mongodb_disable_transparent_hugepages | bool
    - ansible_service_mgr == "systemd"

- name: Add APT key
  apt_key:
    keyserver: "{{ mongodb_apt_keyserver }}"
    id: "{{ mongodb_apt_key_id[mongodb_major_version] }}"
  when: mongodb_package == 'mongodb-org'

- name: Fail when used wrong mongodb_version variable with Debian Stretch
  fail:
    msg: "mongodb_version variable should be '3.6' or '4.0' or '4.2' for Debian Stretch"
  when:
    - mongodb_package == 'mongodb-org'
    - (mongodb_major_version != '3.6' and mongodb_major_version != '4.0' and mongodb_major_version != '4.2')
    - ansible_distribution_release == 'stretch'

- name: Fail when used wrong mongodb_version variable with Ubuntu 18.04
  fail:
    msg: "mongodb_version variable should be '4.0' or '4.2', or else mongodb_package should be 'mongodb' for Ubuntu 18.04"
  when:
    - mongodb_package == 'mongodb-org'
    - (mongodb_major_version != '4.0' and mongodb_major_version != '4.2')
    - ansible_distribution_release == "bionic"

- name: Fail when used wrong mongodb_version variable
  fail:
    msg: "mongodb_version variable should be '3.4', '3.6' or '4.0' or '4.2'"
  when: (mongodb_package == 'mongodb-org' and
        (mongodb_version is not defined
         or mongodb_repository[mongodb_major_version] is not defined))

- name: Add APT repository
  apt_repository:
    repo: "{{ mongodb_repository[version_item] }}"
    update_cache: true
  with_items: "{{ mongodb_major_version }}"
  loop_control:
    loop_var: version_item
  when: mongodb_package == 'mongodb-org'

- name: Install MongoDB package
  apt:
    name: "{{ mongodb_package }}{% if (mongodb_version | length > 3) %}={{ mongodb_version }}{% endif %}"
    state: "{{ mongodb_package_state }}"
    update_cache: true

- name: Install numactl package
  apt:
    name: numactl
    state: present

- name: Add systemd configuration if present
  template:
    src: mongodb.service.j2
    dest: "/lib/systemd/system/{{mongodb_daemon_name}}.service"
    owner: root
    group: root
    mode: '0644'
  when:
    - ansible_service_mgr == "systemd"
    - mongodb_manage_systemd_unit | bool
  notify:
    - reload systemd

- name: Add symlink for systemd
  file:
    src: "/lib/systemd/system/{{mongodb_daemon_name}}.service"
    dest: "/etc/systemd/system/multi-user.target.wants/{{mongodb_daemon_name}}.service"
    state: link
  when:
    - ansible_service_mgr == "systemd"
    - mongodb_manage_systemd_unit | bool
  notify:
    - reload systemd

- name: Install PyMongo package
  apt:
    name: python-pymongo
  when: not mongodb_pymongo_from_pip

- name: Install PIP
  apt:
    pkg:
      - python-dev
      - python-pip
  when: mongodb_pymongo_from_pip | bool

- name: Install setuptools (required for ansible 2.7+)
  apt:
    pkg:
      - python-setuptools
  when: mongodb_pymongo_from_pip | bool

- name: Install PyMongo from PIP
  pip:
    name: pymongo
    state: "{{ mongodb_pymongo_pip_version is defined | ternary('present', 'latest') }}"
    version: "{{ mongodb_pymongo_pip_version | default(omit) }}"
  when: mongodb_pymongo_from_pip | bool