# 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='5.0'
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/en/products/industrial-edge-connectivity/usb-to-serial-converters-usb-hubs/usb-to-serial-converters/uport-1000-series'
license=('GPL')
depends=('glibc')
optdepends=('setserial: set RS-422 485 modes')
options=('!strip')
install="${pkgname}-install.sh"
_srcdir='moxa-all'
#source=("https://www.moxa.com/drivers/IDC_SW/UPort/Driver/UPort%201100%20Series/Linux/V${pkgver}/legacy/driv_linux_kernel2.x_uport1p_v${pkgver}_build_18050314.tgz")
source=(
  "https://www.moxa.com/Moxa/media/PDIM/S100000385/moxa-uport-1000-series-linux-kernel-5.0-for-uport-11x0-series-driver-v${pkgver}.zip"
  'https://www.moxa.com/Moxa/media/PDIM/S100000385/moxa-uport-1000-series-linux-kernel-4.0-for-uport-11x0-series-driver-v4.0.zip'
  'https://www.moxa.com/Moxa/media/PDIM/S100000385/moxa-uport-1000-series-linux-kernel-3.0-for-uport-11x0-series-driver-v3.0.zip'
)
noextract=("${source[@]##*/}")
md5sums=('e38bb66d6b830c490a90ce9c549d6124'
         '611e04ddfc0432a98776368ff899c0b6'
         'e1ae31fdac579083afe96051cd9ceaa6')
sha256sums=('e4fd3cd953c98017691daf51e25cad4f311877aa498531efff0075fbdd9819df'
            '809f5d1a3e75498727ecf4a0925483672b0e8c7f3583c4839e84dcbc8cc0b935'
            'da510884b6ea2a6c72a822d84bc7faea85908ad5736ea18f4bafdd2f7e22e761')

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

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

declare -gA _folders
_setfolders() {
  local _src _dst
  for _src in "${source[@]##*/}"; do
    if [[ "${_src}" =~ 'driver-v'([0-9]+)'.' ]]; then
      _dst="moxa-${BASH_REMATCH[1]}"
      _folders["${_src}"]="${_dst}"
    else
      echo "Unable to identify version in ${_src}"
      set +u
      false
    fi
  done
}
_setfolders

# 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}='${!_ckvar}'"
    if ! grep -qe "^${_ckline}"'$' "${startdir}/${install}"; then
      set +u
      msg "${install} must be fixed"
      echo "${_ckline}"
      false
    fi
  done
}

_multipatch() {
  # Remove MACOS files
  rm -r '__MACOSX'
  rm -f 'readme.txt'

  cd 'source'

  # Scorched Earth, all new Makefile now that the build system is totally broken for any distro with more than one kernel version.
  rm '.DS_Store' 'Makefile' 'mxinstall'
  rm -f 'readme.txt'

  cd 'driver'
  rm 'Makefile' 'mxconf' 'ver.mk'
}

prepare() {
  set -u

  mkdir "${_srcdir}"
  local _src _dst
  for _src in "${!_folders[@]}"; do
    _dst="${_folders[${_src}]}"
    mkdir "${_dst}"
    set +u; msg2 "Extracting ${_src} with bsdtar"; set -u
    bsdtar -x -C "${_dst}" -f "${_src}"
    pushd "${_dst}" > /dev/null
    _multipatch
    popd > /dev/null
    mv "${_dst}/source/driver" "${_srcdir}/${_dst}"
    rmdir "${_dst}/source" "${_dst}"
  done

  _install_check

  cd "${_srcdir}"

  echo > 'Makefile' "
# Automatically generated by ${pkgname}-${pkgver} PKGBUILD from Arch Linux AUR
# https://aur.archlinux.org/"'

KVER   := $(shell uname -r)
KDIR   := /usr/lib/modules/$(KVER)/build
KMAJOR := moxa-$(shell cut -d. -f1 <<<"$(KVER)")
PWD    := $(shell pwd)
TARGET := mxu11x0

all: module

ifneq ($(SUBDIRS),)
obj-m := $(KMAJOR)/$(TARGET).o
else
module:
	$(MAKE) -s -C $(KDIR) M=$(PWD) SUBDIRS=$(PWD) modules
	cp -p $(KMAJOR)/$(TARGET).ko .
endif

clean:
	$(MAKE) -s -C $(KDIR) M=$(PWD) SUBDIRS=$(PWD) clean

install:
	install -Dp $(TARGET).ko -t $(DESTDIR)$(KDIR)/../kernel/drivers/usb/serial/
'

  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
  set +u; msg2 'Blacklist built in module'; set -u
  install -Dm644 <(cat << EOF
# Automatically generated by ${pkgname}-${pkgver} PKGBUILD from Arch Linux AUR
# https://aur.archlinux.org/

# This will kill other TI devices like some Multitech MT9234ZBA-USB 93537152LF
#blacklist ${_builtinmod}

# Override alias list in ti_usb_3410_5052
# Moxa 1110 1130 1150 1151 1131
alias usb:v110Ap1151d*dc*dsc*dp*ic*isc*ip*in* mxu11x0
alias usb:v110Ap1150d*dc*dsc*dp*ic*isc*ip*in* mxu11x0
alias usb:v110Ap1131d*dc*dsc*dp*ic*isc*ip*in* mxu11x0
alias usb:v110Ap1130d*dc*dsc*dp*ic*isc*ip*in* mxu11x0
alias usb:v110Ap1110d*dc*dsc*dp*ic*isc*ip*in* mxu11x0
# This prefers the Moxa driver over the TI driver for boot and hotplug
softdep ${_builtinmod} pre: ${_modulename}
EOF
  ) "${pkgdir}/usr/lib/modprobe.d/${pkgname}.conf"

  if [ "${_opt_DKMS}" -ne 0 ]; then
    set +u; msg2 'Installing DKMS files'; set -u
    rm -r "${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]="${_modulename}"
#BUILT_MODULE_LOCATION[0]=""
# Using all processors doesn't compile this tiny module any faster.
MAKE[0]="make -j1"
CLEAN[0]="make -j1 clean"
# The install version is .ko.gz. The DKMS version is .ko. No conflicts.
DEST_MODULE_LOCATION[0]="/kernel/drivers/usb/serial"
EOF
    ) "${_dkms}/dkms.conf"
    cp -pr './' "${_dkms}/"
    sed -e '# No DKMS instructions say to do this but it works and keeps the MAKE line real simple' \
        -e 's:shell uname -r:KERNELRELEASE:g' \
      -i "${_dkms}/Makefile"
    make -s -C "${_dkms}/" clean KERNELRELEASE="$(uname -r)"
  fi
  set +u
}

set +u