# wsl --import  rocky C:\Users\myuser\Desktop\ C:\Users\myuser\Desktop\Rocky-9-Container-Base-9.1-20230215.0.x86_64.tar.xz --version 2
# wsl -d rocky -u root
# dnf install -y sudo procps systemd NetworkManager iputils openssh-server chrony man man-pages ansible-core
# ansible-playbook /mnt/c/dev/wsl/playbook-wsl.yml -e "firstboot="
# wsl --shutdown   or   wsl --terminate rocky
# ansible-playbook /mnt/c/dev/wsl/playbook-wsl.yml
# (You can ignore if it gives you mount error the first time you restart)
# wsl -d rocky -u username
# ansible-playbook /mnt/c/dev/wsl/playbook-wsl.yml

- hosts: localhost
  become: true

  vars:
    hostname:       'rocky'
    ip:             '192.168.2.6'
    gateway:        '192.168.2.1'
    username:       'myuser'
    wsl_win_path:   'C:\dev\wsl'
    wsl_linux_path: '{{playbook_dir}}'
    dev_path:       '{{wsl_win_path | win_dirname}}'

  tasks:

    - name: Copy /etc templates
      when: firstboot is defined
      template:
        src: '{{wsl_linux_path}}/{{item}}.j2'
        dest: '/etc/{{item}}'
      loop: ['fstab','wsl.conf']

    - name: Update host
      when: firstboot is defined
      block:
        - lineinfile:
            path: '/etc/hosts'
            regexp: '{{item.old_ip}}\s+.*'
            line: "{{item.new_ip}}\t{{hostname}}"
            backrefs: yes
          loop:
            - {old_ip: '127.0.0.1', new_ip: '127.0.0.1'}
            - {old_ip: '127.0.1.1', new_ip: '{{ip}}'}

    - name: 'Create user {{username}} with root privileges'
      when: firstboot is defined
      block:
        - user:
            name: '{{username}}'
            password: '{{username | password_hash("sha512")}}'
        - copy:
            content: '{{username}} ALL=(ALL) NOPASSWD:ALL'
            dest: '/etc/sudoers.d/{{username}}'

    - name: Add network configuration script
      when: firstboot is defined
      vars:
        update_ip: 'update-ip.sh'
      block:
        - lineinfile:
            path: '/usr/lib/systemd/system/NetworkManager.service'
            insertafter: '^\[Service\]'
            line: 'ExecStartPost=/home/{{username}}/{{update_ip}}'
        - template:
            src: '{{wsl_linux_path}}/{{update_ip}}.j2'
            dest: '/home/{{username}}/{{update_ip}}'
            mode: 0755

    - name: Enable network services and update hostname
      when: firstboot is undefined
      block:
        - service:
            name: '{{item}}'
            enabled: true
          loop: ['NetworkManager','sshd','chronyd']
        - hostname:
            name: '{{hostname}}'
            use: systemd