install.sh

# MACCEL_ENABLE_USBMOUSE=0
# MACCEL_DEBUG_INSTALL=0
# MACCEL_BRANCH

bold_start() {
  printf "\e[1m"
}

bold_end() {
  printf "\e[22m"
}

print_bold() {
  bold_start
  printf "$1"
  bold_end
}

print_yellow() {
  printf "\e[33m$1\e[0m"
}

print_green() {
  printf "\e[32m$1\e[0m"
}

underline_start() {
  printf "\e[4m"
}

underline_end() {
  printf "\e[24m\n"
}

get_current_version(){
  if ! which maccel &>/dev/null; then
    return
  fi

  maccel -V | awk '{ print $2 }'
}

CURR_VERSION=$(get_current_version)

set -e

setup_dirs() {
  rm -rf /opt/maccel && mkdir -p /opt/maccel
  cd /opt/maccel

  if [[ -n $MACCEL_BRANCH ]]; then
    print_bold "Will do an install, using the branch: $MACCEL_BRANCH\n"
    git clone --depth 1 --no-single-branch https://github.com/Gnarus-G/maccel.git .
    git switch $MACCEL_BRANCH
  else
    git clone --depth 1 https://github.com/Gnarus-G/maccel.git .
  fi
}

version_update_warning() {
  if [[ -n $CURR_VERSION && "$CURR_VERSION" < "0.1.3" ]]; then
    print_yellow $(print_bold "ATTENTION!")
    printf "\n\n"

    print_yellow "The precision for the processed values has been updated since version '$CURR_VERSION';\n"
    EMPHASIS=$(print_bold "MUST re-enter your parameter values in maccel")
    print_yellow "This means that you $EMPHASIS.\n"
    print_yellow "Otherwise your curve and mouse movement won't behave as expected.\n"

    printf "\nHere were your values as maccel understands them in '$CURR_VERSION':\n"

    print_bold "SENS MULT:  "
    maccel get sens-mult

    print_bold "ACCEL:      "
    maccel get accel

    print_bold "OFFSET:     "
    maccel get offset

    print_bold "OUTPUT CAP: "
    maccel get output-cap
  fi
}

install_driver() {
  make uninstall || true
  if [[ $MACCEL_DEBUG_INSTALL -eq 1 ]]; then
    print_bold "Will do a debug install as requested, MACCEL_DEBUG_INSTALL=1\n"
    make debug_install
  else
    make install
  fi
}

install_cli() {
  VERSION=$(wget -qO- https://github.com/Gnarus-G/maccel/releases/latest | grep -oP 'v\d+\.\d+\.\d+' | tail -n 1)
  curl -fsSL https://github.com/Gnarus-G/maccel/releases/download/$VERSION/maccel-cli.tar.gz -o maccel-cli.tar.gz
  tar -zxvf maccel-cli.tar.gz maccel_$VERSION/maccel
  mkdir -p bin
  sudo install -m 755 -v -D maccel_$VERSION/maccel* bin/
  sudo ln -vfs $(pwd)/bin/maccel* /usr/local/bin/
}

install_udev_rules() {
	sudo rm -f /usr/lib/udev/rules.d/99-maccel*.rules /usr/lib/udev/maccel_*

  sudo install -m 644 -v -D $(pwd)/udev_rules/99-maccel.rules /usr/lib/udev/rules.d/99-maccel.rules
  sudo install -m 755 -v -D $(pwd)/udev_rules/maccel_param_ownership_and_resets /usr/lib/udev/maccel_param_ownership_and_resets 

  # We must maintain the usbmouse driver with its binding rules if an old maccel version is installed.
  if [[ -n "$CURR_VERSION" && "$CURR_VERSION" < "0.1.5" ]]; then 
    sudo install -m 755 -v -D $(pwd)/udev_rules/maccel_bind /usr/lib/udev/maccel_bind
    sudo install -m 644 -v -D $(pwd)/udev_rules/99-maccel-bind.rules /usr/lib/udev/rules.d/99-maccel-bind.rules
  fi
}

trigger_udev_rules() {
  udevadm control --reload-rules
  udevadm trigger --subsystem-match=usb --subsystem-match=input --subsystem-match=hid --attr-match=bInterfaceClass=03 --attr-match=bInterfaceSubClass=01 --attr-match=bInterfaceProtocol=02
}

# ---- Install Process ----

ATTENTION=$(version_update_warning)

underline_start
print_bold "\nFetching the maccel github repo"
underline_end

setup_dirs

underline_start
print_bold "\nInstalling the driver (kernel module)"
underline_end

install_driver

underline_start
print_bold "\nInstalling the CLI"
underline_end

install_cli

underline_start
print_bold "\nInstalling udev rules..."
underline_end

install_udev_rules
trigger_udev_rules

print_bold $(print_green "[Recommended]")
print_bold ' Add yourself to the "maccel" group\n'
print_bold $(print_green "[Recommended]")
print_bold ' usermod -aG maccel $USER\n'

if [[ -n "$ATTENTION" ]]; then
  printf "\n$ATTENTION\n"
fi

if [[ -n "$CURR_VERSION" && "$CURR_VERSION" < "0.2.0" ]]; then 
  bold_start
  print_yellow "\nNOTE: There are two drivers now, and the new (default) one has better compatibility. For more info, see https://github.com/Gnarus-G/maccel/blob/main/TWO_IMPLEMENTATIONS.md.md\n"
  bold_end
fi