install.sh

#!/usr/bin/env bash
RED='\033[0;31m'
ORANGE='\033[0;33m'
NC='\033[0m'
MAKEPKG="makepkg -si --noconfirm"


error() {
  printf "${RED}%s${NC} %s\n" "ERROR:" "${1}"
  exit 1
}

warning() {
  printf "${ORANGE}%s${NC} %s\n" "WARNING:" "${1}"
}

# Configure package manager here if necessary:
if [[ -x "$(command -v yay)" ]]; then
  PKGMAN="yay -S --noconfirm"
elif [[ -x "$(command -v /bin/paru)" ]]; then
  PKGMAN="paru -S --noconfirm"
else
  error "Couldn't find a package manager, please install either yay or paru"
fi

build_and_install() {
  echo "# Build and install package: ${1}"
  pushd "${1}" || error "Not a directory: ${1}"
  eval "${MAKEPKG}"
  local installation_state="${?}"
  popd || error "Unable to go back to working directory."
  if [[ "${installation_state}" -eq 0 ]]; then
    echo "=> SUCCESS"
  else
    error "Failed to install: ${1}"
  fi
}

# ------------------------------------------------------------------------------

# Need to have the correct headers installed before proceding with DKMS
if pacman -Qq linux >/dev/null 2>/dev/null; then
  eval "${PKGMAN} --needed linux-headers"
fi
if pacman -Qq linux-lts >/dev/null 2>/dev/null; then
  eval "${PKGMAN} --needed linux-lts-headers"
fi
if pacman -Qq linux-zen >/dev/null 2>/dev/null; then
  eval "${PKGMAN} --needed linux-zen-headers"
fi
if pacman -Qq linux-hardened >/dev/null 2>/dev/null; then
  eval "${PKGMAN} --needed linux-hardened-headers"
fi

# General dependency(-ies?) to make the webcam work:
general_dependencies=( gst-plugin-pipewire )

# Install dependency for intel-ipu6-dkms-git
echo "# Install dependency for intel-ipu6-dkms-git"
if eval "${PKGMAN} intel-ivsc-firmware"; then
  echo "=> SUCCESS"
else
  error " Failed to install: intel-ivsc-firmware"
fi

build_and_install "intel-ipu6-dkms-git"

# Install dependency for intel-ipu6ep-camera-hal-git
echo "# Install dependency for intel-ipu6ep-camera-hal-git"
  if eval "${PKGMAN} intel-ipu6ep-camera-bin"; then
    echo "=> SUCCESS"
  else
    error " Failed to install: intel-ipu6ep-camera-bin"
  fi

build_and_install "intel-ipu6ep-camera-hal-git"
build_and_install "v4l2loopback-dkms-git"
build_and_install "v4l2-relayd"
build_and_install "icamerasrc-git"

# Install general dependencies
echo "# Install general dependencies"
if eval "${PKGMAN} ${general_dependencies[*]}"; then
  echo "=> SUCCESS"
elif pacman -Qq "${general_dependencies[@]}"; then
	warning "Dependencies failed to update, but are already installed. Trying to continue."
else
  error "Failed to install: ${general_dependencies[*]}"
fi

echo "# Enable: v4l2-relayd.service"
if sudo systemctl enable v4l2-relayd.service; then
  echo "=> SUCCESS"
else
  error "Failed to enable: v4l2-relayd.service"
fi
echo "# Start: v4l2-relayd.service"
if sudo systemctl start v4l2-relayd.service; then
  echo "=> SUCCESS"
else
  error "Failed to start: v4l2-relayd.service"
fi


if [[ "${1}" == "--workaround" ]]; then
  echo "# Creating /etc/systemd/system/v4l2-relayd.service.d/override.conf"
  sudo mkdir -p /etc/systemd/system/v4l2-relayd.service.d && \
  echo -e "[Service]\nExecStart=\nExecStart=/bin/sh -c 'DEVICE=\$(grep -l -m1 -E \"^\${CARD_LABEL}\$\" /sys/devices/virtual/video4linux/*/name | cut -d/ -f6); exec /usr/bin/v4l2-relayd -i \"\${VIDEOSRC}\" \$\${SPLASHSRC:+-s \"\${SPLASHSRC}\"} -o \"appsrc name=appsrc caps=video/x-raw,format=\${FORMAT},width=\${WIDTH},height=\${HEIGHT},framerate=\${FRAMERATE} ! videoconvert ! video/x-raw,format=YUY2 ! v4l2sink name=v4l2sink device=/dev/\$\${DEVICE}\"'" | \
    if sudo tee /etc/systemd/system/v4l2-relayd.service.d/override.conf >/dev/null ; then
      echo "=> SUCCESS"
    else
      error "Failed to write: /etc/systemd/system/v4l2-relayd.service.d/override.conf"
    fi

  echo "# Reloading systemd daemon"
  if sudo systemctl daemon-reload; then
    echo "=> SUCCESS"
  else
    error "Failed to reload systemd daemon"
  fi

  echo "# Restart: v4l2-relayd.service"
  if sudo systemctl restart v4l2-relayd.service; then
    echo "=> SUCCESS"
  else
    error "Failed to restart: v4l2-relayd.service"
  fi
fi
echo -e "\n\nAll done.\nRemember to reboot upon succesful installation!"