feat: Support custom ISO (#21)

BASE="$VERSION.iso"

[ -f "$STORAGE/$BASE" ] && return 0

rm -rf "$STORAGE/tmp"

mkdir -p "$STORAGE/tmp"

SCRIPT="$STORAGE/tmp/mido.sh"

TMP="$STORAGE/tmp"

rm -rf "$TMP"

mkdir -p "$TMP"

if [ -f "$STORAGE/custom.iso" ]; then

  cp "$STORAGE/custom.iso" "$TMP/$BASE"

fi

if [ ! -f "$TMP/$BASE" ]; then

  SCRIPT="$TMP/mido.sh"

  cp /run/mido.sh "$SCRIPT"

  chmod +x "$SCRIPT"

cd "$STORAGE/tmp"

  cd "$TMP"

  bash "$SCRIPT" "$VERSION"

  cd /run

  rm -f "$SCRIPT"

[ ! -f "$STORAGE/tmp/$BASE" ] && error "Failed to download $VERSION.iso from the Microsoft servers!" && exit 66

  [ ! -f "$TMP/$BASE" ] && error "Failed to download $VERSION.iso from the Microsoft servers!" && exit 66

info "Customizing ISO to remove keypress requirement during boot..."

fi

7z x "$BASE" -ounpack

genisoimage -b boot/etfsboot.com -no-emul-boot -c BOOT.CAT -iso-level 4 -J -l -D -N -joliet-long -relaxed-filenames -v -V "Custom" -udf -boot-info-table -eltorito-alt-boot -eltorito-boot efi/microsoft/boot/efisys_noprompt.bin -no-emul-boot -o "$STORAGE/tmp/$BASE.tmp" -allow-limited-size unpack

info "Customizing ISO to remove keypress requirement during boot..."

mv "$STORAGE/tmp/$BASE.tmp" "$STORAGE/$BASE"

rm -rf "$STORAGE/tmp"

DIR="$TMP/unpack"

7z x "$TMP/$BASE" -o"$DIR"

genisoimage -b boot/etfsboot.com -no-emul-boot -c BOOT.CAT -iso-level 4 -J -l -D -N -joliet-long -relaxed-filenames -v -V "$VERSION" -udf -boot-info-table -eltorito-alt-boot -eltorito-boot efi/microsoft/boot/efisys_noprompt.bin -no-emul-boot -o "$TMP/$BASE.tmp" -allow-limited-size "$DIR"

cd /run

mv "$TMP/$BASE.tmp" "$STORAGE/$BASE"

rm -rf "$TMP"

return 0