include:
  - .base

system_bootloader_pkgs:
  pkg.installed:
    - pkgs:
      - grub
      - grub-efi
      - mkinitfs
      - mkinitfs-doc
      - efibootmgr

{% set CURRENT_SUBVOLUME_TIMESTAMP = salt['cmd.shell']('CURRENT_SUBVOLUME=$(LC_ALL=C btrfs sub show / | LC_ALL=C grep Name: | tr -d \'[:space:]\'); TIMESTAMP_FORMAT=\'[[:digit:]]{4}-[[:digit:]]{2}-[[:digit:]]{2}_[[:digit:]]{2}-[[:digit:]]{2}-[[:digit:]]{2}\'; echo "$CURRENT_SUBVOLUME" | grep -Eo "$TIMESTAMP_FORMAT"') %}
{% set CURRENT_SUBVOLUME_TIMESTAMP_HUMAN = salt['cmd.shell']('CURRENT_SUBVOLUME_TIMESTAMP=\'' + CURRENT_SUBVOLUME_TIMESTAMP + '\'; echo "${CURRENT_SUBVOLUME_TIMESTAMP:0:10} ${CURRENT_SUBVOLUME_TIMESTAMP:11:2}:${CURRENT_SUBVOLUME_TIMESTAMP:14:2}"') %}
{% set KERNEL_VERSION = salt['cmd.shell']('uname -r') %}

system_bootloader_install:
  cmd.run:
    - name: "grub-install --target=x86_64-efi --efi-directory=/efi --bootloader-id=alpine-{{ CURRENT_SUBVOLUME_TIMESTAMP }}"
    - require:
      - system_bootloader_pkgs

system_bootloader_grub_dir:
  file.directory:
    - name: /efi/grub
    - makedirs: true
    - user: root
    - group: root
    - mode: '0755'
    - require:
      - system_bootloader_pkgs
      - system_bootloader_install

system_bootloader_mkinitfs_conf:
  file.keyvalue:
    - name: /etc/mkinitfs/mkinitfs.conf
    - key_values:
        features: '"ata base cdrom ext4 btrfs keymap kms mmc nvme raid scsi usb virtio"'
    - separator: '='
    - uncomment: '# '
    - key_ignore_case: false
    - value_ignore_case: false
    - append_if_not_found: true
    - require:
      - system_base_pkgs
      - system_bootloader_pkgs

system_bootloader_os-release:
  file.keyvalue:
    - name: /etc/os-release
    - key_values:
        VERSION_ID: '"Timestamp: {{ CURRENT_SUBVOLUME_TIMESTAMP_HUMAN }} | Kernel: {{ KERNEL_VERSION }}"'
    - separator: '='
    - uncomment: '# '
    - key_ignore_case: False
    - append_if_not_found: True

system_bootloader_menuentry:
  file.blockreplace:
    - name: /etc/grub.d/40_custom
    - marker_start: "#!/bin/sh"
    - marker_end: "# the 'exec tail' line above."
    - source: salt://{{ tpldir }}/files/bootloader_menuentry
    - template: jinja
    - context:
        CURRENT_SUBVOLUME_TIMESTAMP_HUMAN: {{ CURRENT_SUBVOLUME_TIMESTAMP_HUMAN }}
        CURRENT_SUBVOLUME_TIMESTAMP: {{ CURRENT_SUBVOLUME_TIMESTAMP }}
    - prepend_if_not_found: true
    - require:
      - system_base_pkgs
      - system_bootloader_pkgs

system_bootloader_menuentry_clean:
  file.replace:
    - name: /etc/grub.d/40_custom
    - pattern: {{ "# the 'exec tail' line above." | regex_escape }}
    - repl: null
    - require:
      - system_bootloader_menuentry

system_bootloader_config:
  cmd.run:
    - name: 'grub-mkconfig -o /efi/grub/grub.cfg'
    - require:
      - system_bootloader_pkgs
      - system_bootloader_install
      - system_bootloader_grub_dir
      - system_bootloader_menuentry_clean

system_bootloader_remove_default_menuentry:
  file.blockreplace:
    - name: /efi/grub/grub.cfg
    - marker_start: "### BEGIN /etc/grub.d/10_linux ###"
    - marker_end: "### END /etc/grub.d/10_linux ###"
    - content: null
    - require:
      - system_bootloader_install
      - system_bootloader_config