#!/usr/bin/env bash
# shellcheck disable=SC2034

iso_name="Alvin archlinux"
iso_label="AlvinArch_$(date --date="@${SOURCE_DATE_EPOCH:-$(date +%s)}" +%Y%m)"
iso_publisher="Arch Linux <https://archlinux.org>"
iso_application="Alvin Arch Linux Live ISO"
iso_version="$(date --date="@${SOURCE_DATE_EPOCH:-$(date +%s)}" +%Y.%m.%d)"
install_dir="arch"
buildmodes=('iso')
bootmodes=('bios.syslinux'
  'uefi.systemd-boot')
pacman_conf="pacman.conf"
airootfs_image_type="squashfs"
airootfs_image_tool_options=('-comp' 'xz' '-Xbcj' 'x86,arm64' '-b' '1M' '-Xdict-size' '1M')
bootstrap_tarball_compression=('zstd' '-c' '-T0' '--auto-threads=logical' '--long' '-19')
file_permissions=(
  ["/etc/shadow"]="0:0:400"
  ["/root"]="0:0:750"
  ["/root/.automated_script.sh"]="0:0:755"
  ["/root/.gnupg"]="0:0:700"
  ["/usr/local/bin/choose-mirror"]="0:0:755"
  ["/usr/local/bin/alvin-install"]="0:0:755"
  ["/usr/local/bin/Installation_guide"]="0:0:755"
  ["/usr/local/bin/livecd-sound"]="0:0:755"
)

# ── Build stamp (staged file, never committed) ────────────────────────────────
# airootfs/root/.iso-build-stamp lands at /root/.iso-build-stamp on the ISO;
# customize_airootfs.sh keeps it as /etc/alvin-build-stamp and appends it to
# the live medium's /etc/motd (the installed system's motd is left alone).
# Only stamp builds from a git
# checkout or CI — a random source-tarball build would record a bogus commit.
# Sourced by mkarchiso under `set -eu`, hence every expansion is defaulted.
_stamp_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
_stamp_file="${_stamp_dir}/airootfs/root/.iso-build-stamp"
rm -f "${_stamp_file}"
if [[ -e "${_stamp_dir}/.git" || -n "${CI:-}" || -n "${GITEA_ACTIONS:-}" ]]; then
    _stamp_build="$(date --date="@${SOURCE_DATE_EPOCH:-$(date +%s)}" +%Y-%m-%d)"
    # git ≥2.46 honours -c safe.directory even when mkarchiso runs as root
    # over a user-owned checkout; older gits ignore it (protected-config
    # scope) and fall through to the "unknown" line below instead of failing
    # the build (`|| true` keeps set -e happy either way).
    _stamp_commit="$(git -C "${_stamp_dir}" -c safe.directory="${_stamp_dir}" \
        log -1 --format='%cs|%h' 2>/dev/null || true)"
    if [[ -n "${_stamp_commit}" && "${_stamp_commit}" == *"|"* ]]; then
        _stamp_hash="${_stamp_commit##*|}"
        printf 'AlvinArch build %s | commit %s | %s\n' \
            "${_stamp_build}" "${_stamp_commit%%|*}" "${_stamp_hash:0:4}" \
            > "${_stamp_file}"
    else
        printf 'AlvinArch build %s | commit unknown\n' \
            "${_stamp_build}" > "${_stamp_file}"
    fi
fi
unset _stamp_dir _stamp_file _stamp_build _stamp_commit _stamp_hash