#!/bin/bash

nvidia_pkg=(
  nvidia-dkms
  nvidia-settings
  nvidia-utils
  libva
  libva-nvidia-driver-git
)

hypr=(
  hyprland
)

############## WARNING DO NOT EDIT BEYOND THIS LINE if you dont know what you are doing! ######################################

# Set some colors for output messages
OK="$(tput setaf 2)[OK]$(tput sgr0)"
ERROR="$(tput setaf 1)[ERROR]$(tput sgr0)"
NOTE="$(tput setaf 3)[NOTE]$(tput sgr0)"
WARN="$(tput setaf 166)[WARN]$(tput sgr0)"
CAT="$(tput setaf 6)[ACTION]$(tput sgr0)"
ORANGE=$(tput setaf 166)
YELLOW=$(tput setaf 3)
RESET=$(tput sgr0)

# Set the name of the log file to include the current date and time
LOG="install-$(date +%d-%H%M%S)_nvidia.log"

ISAUR=$(command -v yay || command -v paru)

# Set the script to exit on error
set -e

# Function for installing packages
install_package() {
  # Checking if package is already installed
  if $ISAUR -Q "$1" &>> /dev/null; then
    echo -e "${OK} $1 is already installed. Skipping..."
  else
    # Package not installed
    echo -e "${NOTE} Installing $1 ..."
    $ISAUR -S --noconfirm "$1" 2>&1 | tee -a "$LOG"
    # Making sure package is installed
    if $ISAUR -Q "$1" &>> /dev/null; then
      echo -e "\e[1A\e[K${OK} $1 was installed."
    else
      # Something is missing, exiting to review log
      echo -e "\e[1A\e[K${ERROR} $1 failed to install :( , please check the install.log. You may need to install manually! Sorry, I have tried :("
      exit 1
    fi
  fi
}

# nvidia stuff
printf "${YELLOW} Checking for other hyprland packages and remove if any..${RESET}\n"
if pacman -Qs hyprland > /dev/null; then
  printf "${YELLOW} Hyprland detected. uninstalling to install Hyprland-git...${RESET}\n"
    for hyprnvi in hyprland-git hyprland-nvidia hyprland-nvidia-git hyprland-nvidia-hidpi-git; do
    sudo pacman -R --noconfirm "$hyprnvi" 2>/dev/null | tee -a "$LOG" || true
    done
fi

# Hyprland
printf "${NOTE} Installing Hyprland......\n"
 for HYPR in "${hypr[@]}"; do
   install_package "$HYPR" 2>&1 | tee -a "$LOG"
   [ $? -ne 0 ] && { echo -e "\e[1A\e[K${ERROR} - $HYPR install had failed, please check the install.log"; exit 1; }
  done

# Install additional Nvidia packages
printf "${YELLOW} Installing addition Nvidia packages...\n"
for krnl in $(cat /usr/lib/modules/*/pkgbase); do
  for NVIDIA in "${krnl}-headers" "${nvidia_pkg[@]}"; do
    install_package "$NVIDIA" 2>&1 | tee -a "$LOG"
  done
done

# Check if the Nvidia modules are already added in mkinitcpio.conf and add if not
if grep -qE '^MODULES=.*nvidia. *nvidia_modeset.*nvidia_uvm.*nvidia_drm' /etc/mkinitcpio.conf; then
  echo "Nvidia modules already included in /etc/mkinitcpio.conf" 2>&1 | tee -a "$LOG"
else
  sudo sed -Ei 's/^(MODULES=\([^\)]*)\)/\1 nvidia nvidia_modeset nvidia_uvm nvidia_drm)/' /etc/mkinitcpio.conf 2>&1 | tee -a "$LOG"
  echo "Nvidia modules added in /etc/mkinitcpio.conf"
fi

sudo mkinitcpio -P 2>&1 | tee -a "$LOG"
printf "\n\n\n"

# Additional Nvidia steps
NVEA="/etc/modprobe.d/nvidia.conf"
if [ -f "$NVEA" ]; then
  printf "${OK} Seems like nvidia-drm modeset=1 is already added in your system..moving on.\n"
  printf "\n"
else
  printf "\n"
  printf "${YELLOW} Adding options to $NVEA..."
  sudo echo -e "options nvidia-drm modeset=1" | sudo tee -a /etc/modprobe.d/nvidia.conf 2>&1 | tee -a "$LOG"
  printf "\n"
fi

# additional for GRUB users
# Check if /etc/default/grub exists
if [ -f /etc/default/grub ]; then
    # Check if nvidia_drm.modeset=1 is already present
    if ! sudo grep -q "nvidia-drm.modeset=1" /etc/default/grub; then
        # Add nvidia_drm.modeset=1 to GRUB_CMDLINE_LINUX_DEFAULT
        sudo sed -i 's/\(GRUB_CMDLINE_LINUX_DEFAULT=".*\)"/\1 nvidia-drm.modeset=1"/' /etc/default/grub
        # Regenerate GRUB configuration
        sudo grub-mkconfig -o /boot/grub/grub.cfg
        echo "nvidia-drm.modeset=1 added to /etc/default/grub"
    else
        echo "nvidia-drm.modeset=1 is already present in /etc/default/grub"
    fi
else
    echo "/etc/default/grub does not exist"
fi

# Blacklist nouveau
read -n1 -rep "${CAT} Would you like to blacklist nouveau? (y/n)" response
echo
if [[ $response =~ ^[Yy]$ ]]; then
  NOUVEAU="/etc/modprobe.d/nouveau.conf"
  if [ -f "$NOUVEAU" ]; then
    printf "${OK} Seems like nouveau is already blacklisted..moving on.\n"
  else
    printf "\n"
    echo "blacklist nouveau" | sudo tee -a "$NOUVEAU" 2>&1 | tee -a "$LOG"
    printf "${NOTE} has been added to $NOUVEAU.\n"
    printf "\n"

    # To completely blacklist nouveau (See wiki.archlinux.org/title/Kernel_module#Blacklisting 6.1)
    if [ -f "/etc/modprobe.d/blacklist.conf" ]; then
      echo "install nouveau /bin/true" | sudo tee -a "/etc/modprobe.d/blacklist.conf" 2>&1 | tee -a "$LOG"
    else
      echo "install nouveau /bin/true" | sudo tee "/etc/modprobe.d/blacklist.conf" 2>&1 | tee -a "$LOG"
    fi
  fi
else
  printf "${NOTE} Skipping nouveau blacklisting.\n"
fi

clear