---

- name: "Debian | Set name if state != latest"
  set_fact:
    telegraf_agent_package: telegraf={{ telegraf_agent_version }}-{{ telegraf_agent_version_patch }}
  when:
    - telegraf_agent_package_state != "latest"

- name: "Debian | Set telegraf_agent_package_arch"
  set_fact:
    telegraf_agent_package_arch: "{{ ansible_architecture }}"

- name: "Debian | Set telegraf_agent_package_arch specific for x86_64"
  set_fact:
    telegraf_agent_package_arch: "amd64"
  when:
    - ansible_architecture == "x86_64"

- name: "Debian | Set telegraf_agent_package_arch specific for arm64"
  set_fact:
    telegraf_agent_package_arch: "armhf"
  when:
    - ansible_architecture == "arm64"

- name: "Debian | Ensure the system can use the HTTPS transport for APT"
  stat:
    path: /usr/lib/apt/methods/https
  register: apt_https_transport

- name: "Debian | Install APT HTTPS transport"
  apt:
    name: "apt-transport-https"
    state: present
  register: are_telegraf_dependencies_packages_installed
  until: are_telegraf_dependencies_packages_installed is succeeded
  when:
    - not apt_https_transport.stat.exists
  become: true

- name: "Debian | Configure Telegraf apt repository"
  when:
    - telegraf_agent_package_method == "repo"
  block:
    - when: (ansible_distribution == "Debian" and ansible_distribution_major_version|int < 9) or (ansible_distribution == "Ubuntu" and ansible_distribution_major_version|int < 18)
      name: "Debian | Download Telegraf apt key"
      apt_key:
        url: "https://repos.influxdata.com/influxdata-archive.key"
        id: 7df8b07e
        state: present
      register: are_telegraf_dependencies_keys_installed
      until: are_telegraf_dependencies_keys_installed is succeeded
      become: true
    - when: (ansible_distribution == "Debian" and ansible_distribution_major_version|int >= 9) or (ansible_distribution == "Ubuntu" and ansible_distribution_major_version|int >= 18)
      block:  
        - name: "Debian | Ensure the shared keyrings directory exists"
          stat:
            path: /usr/share/keyrings
          register: usr_share_keyrings

        - name: "Debian | Create shared keyrings directory"
          file:
            state: directory
            path: /usr/share/keyrings
            owner: root
            group: root
            mode: 0755
          when:
            - not usr_share_keyrings.stat.exists
          become: true
          
        - name: "Debian | Install Telegraf apt key"
          get_url:
            url: https://repos.influxdata.com/influxdata-archive.key
            dest: /usr/share/keyrings/influxdata-archive.asc
          register: are_telegraf_dependencies_keys_installed
          until: are_telegraf_dependencies_keys_installed is succeeded
          become: true

        - name: "Debian | Set Telegraf apt repository parameters"
          set_fact: 
            telegraf_repository_params: "[signed-by=/usr/share/keyrings/influxdata-archive.asc]"

    - name: "Debian | Add Telegraf repository (using LSB)"
      copy:
        content: "deb {{ telegraf_repository_params | default('') }} https://repos.influxdata.com/{{ ansible_distribution|lower }} {{ ansible_lsb.codename }} stable"
        dest: /etc/apt/sources.list.d/telegraf.list
      when:
        - ansible_lsb is defined
        - ansible_lsb.codename is defined

    - name: "Debian | Add Telegraf repository"
      copy:
        content: "deb {{ telegraf_repository_params | default('') }} https://repos.influxdata.com/{{ ansible_distribution|lower }} {{ ansible_distribution_release }} stable"
        dest: /etc/apt/sources.list.d/telegraf.list
      become: true
      when:
        - ansible_lsb is not defined or ansible_lsb.codename is not defined
    
    - name: "Debian | Install Telegraf package (repo)"
      apt:
        name: "{{ telegraf_agent_package }}"
        state: "{{ telegraf_agent_package_state }}"
        update_cache: true
      register: is_telegraf_package_installed
      until: is_telegraf_package_installed is succeeded
      notify: "Restart Telegraf"
      become: true
      when:
        - telegraf_agent_package_method == "repo"
      ignore_errors: "{{ ansible_check_mode }}"

    - name: "Debian | Install Telegraf package (repo)"
      apt:
        name: "{{ telegraf_agent_package }}"
        state: "{{ telegraf_agent_package_state }}"
        update_cache: true
      register: is_telegraf_package_installed
      until: is_telegraf_package_installed is succeeded
      notify: "Restart Telegraf"
      become: true
      ignore_errors: "{{ ansible_check_mode }}"

- name: "Debian | Download Telegraf package (online)"
  get_url:
    url: https://dl.influxdata.com/telegraf/releases/{{ telegraf_agent_package_file_deb }}
    dest: "{{ telegraf_agent_package_path }}/{{ telegraf_agent_package }}"
    use_proxy: "{{ true if http_proxy is defined and http_proxy else false }}"
  environment:
    http_proxy: "{{ http_proxy | default(None) | default(omit) }}"
    https_proxy: "{{ https_proxy | default(None) | default(omit) }}"
  when:
    - telegraf_agent_package_method == "online"

- name: "Debian | Install Telegraf package (online)"
  apt:
    deb: "{{ telegraf_agent_package_path }}/{{ telegraf_agent_package }}"
    state: "present"
    allow_downgrade: true
  register: is_telegraf_package_installed
  until: is_telegraf_package_installed is succeeded
  notify: "Restart Telegraf"
  become: true
  when:
    - telegraf_agent_package_method == "online" or telegraf_agent_package_method == "offline"
  ignore_errors: "{{ ansible_check_mode }}"

- name: "Debian | Remove repository (online/offline install)"
  file:
    path: "/etc/apt/sources.list.d/telegraf.list"
    state: absent
  become: true
  when:
    - telegraf_agent_package_method == "online" or telegraf_agent_package_method == "offline"