---
- name: Install curated Ubuntu packages
  hosts: all
  become: true
  gather_facts: true

  vars:
    ubuntu_package_matrix:
      - name: python3-venv
        enabled: << install_python3_venv >>
      - name: python3-pip
        enabled: << install_python3_pip >>
      - name: python3-apt
        enabled: << install_python3_apt >>
      - name: curl
        enabled: << install_curl >>
      - name: wget
        enabled: << install_wget >>
      - name: git
        enabled: << install_git >>
      - name: jq
        enabled: << install_jq >>
      - name: rsync
        enabled: << install_rsync >>
      - name: unzip
        enabled: << install_unzip >>
      - name: ca-certificates
        enabled: << install_ca_certificates >>
      - name: gnupg
        enabled: << install_gnupg >>
      - name: lsb-release
        enabled: << install_lsb_release >>
      - name: prometheus-node-exporter
        enabled: << install_prometheus_node_exporter >>
      - name: nfs-common
        enabled: << install_nfs_common >>
      - name: qemu-guest-agent
        enabled: << install_qemu_guest_agent >>

  tasks:
    - name: Validate Ubuntu APT target
      ansible.builtin.assert:
        that:
          - ansible_facts['distribution'] == 'Ubuntu'
          - ansible_facts['pkg_mgr'] == 'apt'
        fail_msg: "This playbook only supports Ubuntu hosts that use APT."

    - name: Build selected package list
      ansible.builtin.set_fact:
        ubuntu_selected_packages: "{{ ubuntu_package_matrix | selectattr('enabled') | map(attribute='name') | list }}"

    - name: Refresh APT package index
      ansible.builtin.command:
        cmd: apt-get update
      environment:
        DEBIAN_FRONTEND: noninteractive
      register: ubuntu_packages_apt_update
      changed_when: false

    - name: Install selected Ubuntu packages
      ansible.builtin.apt:
        name: "{{ ubuntu_selected_packages }}"
        state: present
        update_cache: false
      when: ubuntu_selected_packages | length > 0

    - name: Enable and start Prometheus node exporter
      ansible.builtin.service:
        name: prometheus-node-exporter
        state: started
        enabled: true
      when: << install_prometheus_node_exporter >>

    - name: Enable and start QEMU guest agent
      ansible.builtin.service:
        name: qemu-guest-agent
        state: started
        enabled: true
      when: << install_qemu_guest_agent >>

    - name: Show selected package summary
      ansible.builtin.debug:
        msg:
          - "Host: {{ inventory_hostname }}"
          - "Selected packages: {{ ubuntu_selected_packages | join(', ') if (ubuntu_selected_packages | length > 0) else 'none' }}"