---
- name: check if usb drive mountpoint exists
  run_once: true
  stat:
    path: "{{ usb_install_path }}"
  register: usb_install_mountpoint

- name: fail if usb drive mountpoint does not exist
  run_once: true
  assert:
    that: usb_install_mountpoint.stat.exists
    msg: the path to the usb drive does not exist

- block:
  - name: download installer
    vars:
      debian_installer_distro: "{{ install_distro }}"
      debian_installer_codename: "{{ install_codename }}"
      debian_installer_arch: "{{ install.arch | default('amd64') }}"
      debian_installer_variant: netboot
    run_once: true
    import_role:
      role: installer/debian/fetch

  - name: Create temporary workdir
    tempfile:
      prefix: "usb-install.{{ install_hostname }}."
      state: directory
    register: tmpdir

  - name: generate pressed file
    vars:
      preseed_orig_initrd: "{{ installer_base_path }}/{{ install_distro }}-{{ install_codename }}/{{ hostvars[install_hostname].install_cooked.arch | default('amd64') }}-netboot/initrd.gz"
      preseed_tmpdir: "{{ tmpdir.path }}"
    import_role:
      name: installer/debian/preseed

  - name: Copy the preseed initramfs to the usb drive
    copy:
      src: "{{ tmpdir.path }}/initrd.{{ install_hostname }}.gz"
      dest: "{{ usb_install_path }}/initrd.{{ install_hostname }}.gz"

  always:
  - name: Cleanup temporary workdir
    when: tmpdir.path is defined
    file:
      path: "{{ tmpdir.path }}"
      state: absent

- name: Copy linux kernel image to the USB drive
  run_once: true
  copy:
    src: "{{ global_cache_dir }}/debian-installer/{{ install_distro }}-{{ install_codename }}/{{ install.arch | default('amd64') }}-{{ debian_installer_variant }}/linux"
    dest: "{{ usb_install_path }}/"

- name: Generate syslinux configuration for BIOS boot
  run_once: true
  vars:
    syslinux_base_path: ""
  template:
    src: syslinux.cfg.j2
    dest: "{{ usb_install_path }}/syslinux.cfg"

- name: create EFI boot directory
  run_once: true
  file:
    path: "{{ usb_install_path }}/EFI/boot"
    state: directory

- name: Generate syslinux configuration for UEFI boot
  run_once: true
  vars:
    syslinux_base_path: "../../"
  template:
    src: syslinux.cfg.j2
    dest: "{{ usb_install_path }}/EFI/boot/syslinux.cfg"

- name: Make the USB disk bootable
  pause:
    seconds: 0
    prompt: |
      You should make sure the USB disk is bootable and
      has syslinux installed.

      $ sudo apt install mbr syslinux
      $ sudo install-mbr /dev/CHANGEME
      $ sudo syslinux -i /dev/CHANGEME1
      $ sudo fdisk       /dev/CHANGEME
      [Here, make sure partition 1 is marked bootable.]

      for UEFI these steps need to be done

      $ sudo apt install syslinux-efi
      $ cp /usr/lib/syslinux/modules/efi64/* {{ usb_install_path }}/EFI/boot/
      $ cp /usr/lib/SYSLINUX.EFI/efi64/syslinux.efi {{ usb_install_path }}/EFI/boot/bootx64.efi

      This will NOT be done automatically.