#!/bin/bash
# 💫 https://github.com/JaKooLit 💫 #
# Nvidia - Check Readme for more details for the drivers #
# UBUNTU USERS, FOLLOW README!

nvidia_pkg=(
  libva-wayland2
  nvidia-vaapi-driver
)

# for ubuntu-nvidia owners! just delete #
sudo ubuntu-drivers install

## WARNING: DO NOT EDIT BEYOND THIS LINE IF YOU DON'T KNOW WHAT YOU ARE DOING! ##
# Determine the directory where the script is located
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

# Change the working directory to the parent directory of the script
PARENT_DIR="$SCRIPT_DIR/.."
cd "$PARENT_DIR" || exit 1

source "$(dirname "$(readlink -f "$0")")/Global_functions.sh"

# Set the name of the log file to include the current date and time
LOG="Install-Logs/install-$(date +%d-%H%M%S)_nvidia.log"
MLOG="install-$(date +%d-%H%M%S)_nvidia2.log"

## adding the deb source for nvidia driver
# Create a backup of the sources.list file
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup 2>&1 | tee -a "$LOG"

## UBUNTU - NVIDIA (comment this two by adding # you dont need this!)
# Add the comment and repository entry to sources.list
#echo "## for nvidia" | sudo tee -a /etc/apt/sources.list 2>&1 | tee -a "$LOG"
#echo "deb http://deb.debian.org/debian/ trixie main contrib non-free non-free-firmware" | sudo tee -a /etc/apt/sources.list 2>&1 | tee -a "$LOG"

# Update the package list
sudo apt update

# Function to add a value to a configuration file if not present
add_to_file() {
    local config_file="$1"
    local value="$2"
    
    if ! sudo grep -q "$value" "$config_file"; then
        echo "Adding $value to $config_file"
        sudo sh -c "echo '$value' >> '$config_file'"
    else
        echo "$value is already present in $config_file."
    fi
}

# Install additional Nvidia packages
printf "${YELLOW} Installing Nvidia packages...\n"
  for NVIDIA in "${nvidia_pkg[@]}"; do
    install_package "$NVIDIA" 2>&1 | tee -a "$LOG"
  done


printf "${YELLOW} nvidia-stuff to /etc/default/grub..."

  # Additional options to add to GRUB_CMDLINE_LINUX
  additional_options="rd.driver.blacklist=nouveau modprobe.blacklist=nouveau nvidia-drm.modeset=1 rcutree.rcu_idle_gp_delay=1"

  # Check if additional options are already present in GRUB_CMDLINE_LINUX
  if grep -q "GRUB_CMDLINE_LINUX.*$additional_options" /etc/default/grub; then
    echo "GRUB_CMDLINE_LINUX already contains the additional options"
  else
    # Append the additional options to GRUB_CMDLINE_LINUX
    sudo sed -i "s/GRUB_CMDLINE_LINUX=\"/GRUB_CMDLINE_LINUX=\"$additional_options /" /etc/default/grub
    echo "Added the additional options to GRUB_CMDLINE_LINUX"
  fi

  # Update GRUB configuration
  sudo update-grub 2>&1 | tee -a "$LOG"
    
  # Define the configuration file and the line to add
    config_file="/etc/modprobe.d/nvidia.conf"
    line_to_add="""
    options nvidia-drm modeset=1
    options nvidia NVreg_PreserveVideoMemoryAllocations=1
    """

    # Check if the config file exists
    if [ ! -e "$config_file" ]; then
        echo "Creating $config_file"
        sudo touch "$config_file" 2>&1 | tee -a "$LOG"
    fi

    add_to_file "$config_file" "$line_to_add"

   # Add NVIDIA modules to initramfs configuration
   modules_to_add="nvidia nvidia_modeset nvidia_uvm nvidia_drm"
   modules_file="/etc/initramfs-tools/modules"

   if [ -e "$modules_file" ]; then
    add_to_file "$modules_file" "$modules_to_add" 2>&1 | tee -a "$LOG"
    sudo update-initramfs -u 2>&1 | tee -a "$LOG"
   else
    echo "Modules file ($modules_file) not found." 2>&1 | tee -a "$LOG"
   fi

clear