# Maintainer: Chris Severance aur.severach aATt spamgourmet dott com

# Todo: should we make a udev startup for setserial RS-422 485

# lsmod | grep -Ee '(mxu11x0|ti_usb_3410_5052)'

_opt_DKMS=1           # This can be toggled between installs

set -u
pkgname='moxa-mxu11x0'
pkgver='1.4'
pkgrel='1'
pkgdesc='kernel module driver for Moxa UPort USB serial 1110 1130i 1150i RS-232 422 485'
arch=('i686' 'x86_64')
url='https://www.moxa.com/support/support_home.aspx'
license=('GPL')
depends=('glibc')
optdepends=('setserial: set RS-422 485 modes')
install="${pkgname}-install.sh"
_srcdir="${pkgname#*-}"
source=("https://www.moxa.com/drivers/IDC_SW/UPort/Driver/UPort%201100%20Series/Linux/V${pkgver}/legacy/driv_linux_kernel2.x_uport1p_v${pkgver}_build_18050314.tgz")
sha256sums=('b9878842c3cd05f66647b584e10ed0689f7614b2b37ac31ba9c4da87d0bcba19')

if [ "${_opt_DKMS}" -ne 0 ]; then
  depends+=('linux' 'dkms' 'linux-headers')
else
  makedepends+=('linux-headers')
fi

_modulename="${pkgname#*-}"
_builtinmod='ti_usb_3410_5052'

# We can't modify .install but we can stop and force the user to fix it.
_install_check() {
  local _ckvar
  local _ckline
  local _pkgname="${pkgname}"
  for _ckvar in '_pkgname' '_modulename' '_builtinmod'; do
    _ckline="${_ckvar}='${!_ckvar}'"
    if ! grep -q "^${_ckline}"'$' "${startdir}/${install}"; then
      msg "${install} must be fixed"
      echo "${_ckline}"
      set +u
      false
    fi
  done
}

prepare() {
  set -u
  _install_check
  cd "${_srcdir}"

  # Fix /lib
  sed -e 's:/lib/:/usr/lib/:g' -i driver/*/Makefile driver/*/mxconf

  # Fix umbrella Makefile
  sed -e '# Too quiet' \
      -e '/make / s: -s::g' \
      -e '# Disable kernel 2.4 detection' \
      -e '/^KERNEL_VERSION_MAJOR_NUMBER/,/^$/ s:^.:#&:g' \
      -e '# Improve chdir technique' \
      -e 's:^.*@cd.*$:#&-:g' \
      -e 's:^\tmake:\t@make -C $(DRIVER_PATH):g' \
    -i 'Makefile'

  # Fix driver Makefile
  sed -e '# CentOS option is only for Kernel 3.10, its easier to redo blackisting than to fix it' \
      -e '/^TI_3410/,/^BLACKLIST_LINE/ s:^.:#&:g' \
      -e '# Ungroup make targets' \
      -e '/^module:/ s: envchk::g' \
      -e '/^install:/ s: module::g' \
      -e '# Extra file in gcc8' \
      -e 's/^clean_local:.*$/&\n\t@rm -f .cache.mk/g' \
      -e '# Make package compatible' \
      -e '/^install:/,/^$/ s:/usr:$(DESTDIR)&:g' \
      -e '# Fix install by removing every line' \
      -e '/^install:/,/^$/ s:^\t:#&:g' \
      -e '# Put back the lines we want' \
      -e '\:kernel/drivers/usb/serial: s:^#::g' \
      -e '# Fedora detection isnt used anywhere' \
      -e 's:^KDISVER:#&:g' \
      -e '/fc6/,/^$/ s:^.:#&:g' \
      -e '# Cut the noise' \
      -e '/^module:/,/^$/ s:\t@echo:#&:g' \
      -e 's:^DRV_VER:#&:g' \
      -e 's:^REL_DATE:#&:g' \
      -e '# Change to kernel built in make clean' \
      -e 's/^clean:/clean_orig:/g' \
      -e 's/^clean_orig:/clean:\n\t@$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) clean\n\n&/g' \
    -i 'driver/kernel2.6/Makefile'

  set +u
}

build() {
  set -u
  cd "${_srcdir}"
  make -j1 # too small for parallel make
  set +u
}

package() {
  set -u
  cd "${_srcdir}"

  if [ "${_opt_DKMS}" -eq 0 ]; then
    # I don't want Linux version info showing on AUR web. After a few months 'linux<0.0.0' makes it look like an out of date package.
    local _kernelversionsmall="$(uname -r)"
    _kernelversionsmall="${_kernelversionsmall%%-*}"
    _kernelversionsmall="${_kernelversionsmall%\.0}" # trim 4.0.0 -> 4.0, 4.1.0 -> 4.1
    # prevent the mksrcinfo bash emulator from getting these vars!
    #eval 'conf''licts=("linux>${_kernelversionsmall}" "linux<${_kernelversionsmall}")'
    eval 'dep''ends+=("linux=${_kernelversionsmall}")'
  fi

  make -j1 DESTDIR="${pkgdir}" install

  # The module is in the same folder as DKMS. Compress to a different name to prevent conflict.
  # When future versions of DKMS compress we'll stop doing this.
  find "${pkgdir}/usr/lib/modules/" -type 'f' -name '*.ko' -exec 'gzip' '-9' '{}' ';'

  # Blacklist built in module
  install -Dm644 <(cat << EOF
# Automatically generated by ${pkgname}-${pkgver} PKGBUILD from Arch Linux AUR
# https://aur.archlinux.org/

blacklist ${_builtinmod}
EOF
  ) "${pkgdir}/usr/lib/modprobe.d/${pkgname}.conf"

  if [ "${_opt_DKMS}" -ne 0 ]; then
    rm -r "${pkgdir}/usr/lib/modules/"
    local _dkms="${pkgdir}/usr/src/${pkgname}-${pkgver}"
    install -Dm644 <(cat << EOF
# Automatically generated by ${pkgname}-${pkgver} PKGBUILD from Arch Linux AUR
# https://aur.archlinux.org/

PACKAGE_NAME="${pkgname}"
PACKAGE_VERSION="${pkgver}"
AUTOINSTALL="yes"

BUILT_MODULE_NAME[0]="${_modulename}"
BUILT_MODULE_LOCATION[0]="driver/kernel2.6"
# Using all processors doesn't compile this tiny module any faster.
MAKE[0]="make -j1 -C 'driver/kernel2.6'"
CLEAN[0]="make -j1 -C 'driver/kernel2.6' clean"
# The install version is .ko.gz. The DKMS version is .ko. No conflicts.
DEST_MODULE_LOCATION[0]="/kernel/drivers/usb/serial"
EOF
    ) "${_dkms}/dkms.conf"
    install -dm755 "${_dkms}/driver/"
    cp -pr 'driver/' "${_dkms}/"
    rm -r "${_dkms}/driver/kernel2.4"
    rm "${_dkms}/driver/kernel2.6/mxconf"
    sed -e '# No DKMS instructions say to do this but it works and keeps the MAKE line real simple' \
        -e 's:shell uname -r:KERNELRELEASE:g' \
        -e '# DKMS sets KERNELRELEASE which accidentally launches phase 2 of this Makefile' \
        -e '# Fix by changing the detection var.' \
        -e '# SUBDIRS makes more sense to me because I can see it in the Makefile!' \
        -e 's:ifneq ($(KERNELRELEASE),):ifneq ($(SUBDIRS),):g' \
      -i "${_dkms}/driver/kernel2.6/Makefile"
    make -s -C "${_dkms}/driver/kernel2.6/" clean KERNELRELEASE="$(uname -r)"
  fi
  set +u
}

set +u