# This script will fetch necessary packages
echo Note: An Internet connection is REQUIRED for this script to succeed.

if [[ -e .alreadyrun ]]; then
sleep 1
cat .alreadyrun
sleep 1
exit
fi

#read -e -n 1 -p "Do you have an Internet connection? " ans
#if [ $ans == "n" ]; then
#  echo -e "\e[31mPlease connect to the Internet and rerun this command. \e[39m"
#  echo "Exiting..."
#  sleep .5
#  exit 1
#fi

# Asks the user if they're on the correct version
read -e -n 1 -p "Are you running Raspbian Stretch Lite? " ans
if [ &ans == "n" ]; then
  echo -e "\e[33m\e[1mThis script is useful only in Raspbian Lite."
  echo -e "Running this in the full Raspbian desktop is untested and will likely break.\e[39m\e[0m"
  read -e -n 1 -p "Do you still want to try? " ans
  if [ $ans == "n" ]; then
    echo "Exiting..."
    sleep .5
    exit 2
  fi
fi

# If the default rpi password is unchanged, skip prompting for the password
read -e -n 1 -p "Have you changed the default username or password? " ans
if [ $ans == "y" ]; then
  sudo apt update
else
  echo raspberry | sudo -S apt update
  sudo apt upgrade -y
fi

# Install drivers for LCD
sudo rpi-update
sudo apt install raspi-gpio
sudo raspi-gpio get
sleep 1
wget https://raw.githubusercontent.com/adafruit/Adafruit-DPI-Kippah/master/dt-blob.bin
sudo cp dt-blob.bin /boot/
sleep 1

touch tmpboot.txt

echo "# Disable spi and i2c, we need these pins." >> tmpboot.txt
echo "dtparam=spi=off" >> tmpboot.txt
echo "dtparam=i2c_arm=off" >> tmpboot.txt
echo "" >> tmpboot.txt
echo "# Set screen size and any overscan required" >> tmpboot.txt
echo "overscan_left=0" >> tmpboot.txt
echo "overscan_right=0" >> tmpboot.txt
echo "overscan_top=0" >> tmpboot.txt
echo "overscan_bottom=0" >> tmpboot.txt
echo "framebuffer_width=800" >> tmpboot.txt
echo "framebuffer_height=480" >> tmpboot.txt
echo "" >> tmpboot.txt
echo "# enable the DPI display" >> tmpboot.txt
echo "enable_dpi_lcd=1" >> tmpboot.txt
echo "display_default_lcd=1" >> tmpboot.txt
echo "" >> tmpboot.txt
echo "# set up the size to 800x480" >> tmpboot.txt
echo "dpi_group=2" >> tmpboot.txt
echo "dpi_mode=87" >> tmpboot.txt
echo "" >> tmpboot.txt
echo "# set up the hsync/vsync/clock polarity and format" >> tmpboot.txt
echo "dpi_output_format=454661" >> tmpboot.txt
echo "" >> tmpboot.txt
echo "# set up the size to 800x480" >> tmpboot.txt
echo "hdmi_timings=800 0 40 48 88 480 0 13 3 32 0 0 0 60 0 32000000 6" >> tmpboot.txt

sudo cat tmpboot.txt >> /boot/config.txt

# Install X server, DM, WM, vim (for some reason), and python stuff
sudo apt install vim xorg lightdm ratpoison idle3 python3-matplotlib -y

# Checks to see if the init config for X exists, and copies the skeleton file
if [[ -e ~/.xinitrc ]]; then
  echo "xinitrc exists... skipping"
else
  cp /etc/X11/xinit/xinitrc ~/.xinitrc
fi

# Modify init configs for X and Ratpoison
echo "exec /usr/bin/ratpoison" >> ~/.xinitrc
echo "banish" >> ~/.ratpoisonrc
echo "exec /usr/bin/idle3" >> ~/.ratpoisonrc

touch .alreadyrun
echo "This script can only be run once." >> .alreadyrun

echo "Shutting down. Connect LCD, then power back on."
sleep 2

sudo shutdown -h now
EOF