#!/bin/bash

ARCH="armv7l"
DOWNLOAD_ARCH="arm"
APPVERSION=""
CURRENT_APPVERSION=""
RELEASE=""
UPDATE_URL="https://storage3.q-play.net/releases"

if [ -z "${2}" ]
then
  CURRENT_APPVERSION="N/A"
else
  CURRENT_APPVERSION=${2}
fi

FREE_DISKSPACE=$(df ${HOME} | grep '^/' | awk '{ print $4 }')
REQUIRED_DISKSPACE="409600"

if [ "${FREE_DISKSPACE}" -le ${REQUIRED_DISKSPACE} ]
then
    echo "Not enough disk space avaialble to continue install or update Q-Play, 400 MB free disk space is required."
    exit 1
fi

if [ -z "${1}" ]
then
  echo "Install default"
else
  if [ "${1}" == "dev" ]
  then
    echo "Install dev release"
    RELEASE="dev"
  elif [ "${1}" == "beta" ]
  then
    echo "Install beta release"
    RELEASE="beta"
  else
    echo "Install default release"
  fi
fi

# Install wget and unzip
sudo apt-get update -y
sudo apt-get install wget unzip xdotool -y
if [ "$?" != 0 ]
then
  echo "Error with sudo apt-get command, it is possible process lack sudo permission. Try a full reboot to update."
  sudo dpkg --configure -a
  if [ -f "${HOME}/q-play-linux-${ARCH}/q-play" ]
  then
    echo "Will reboot in 20 seconds."
    sleep 20
    reboot
  fi
  exit 1
fi

# Remember to set arch.
APPVERSION=$(wget -qO - ${UPDATE_URL}/index.php?arch=${DOWNLOAD_ARCH}\&platform=linux\&release=${RELEASE} | grep -Po '"version":.*?[^\\]",' | awk -F':' '{print $2}' | sed 's/"\(.*\)",/\1/')

if [ -z "${APPVERSION}" ]
then
  echo "APPVERSION was not returned from server!"
else
  echo "Start install/update cycle to version: ${APPVERSION}"

  cd ${HOME}
  wget -O q-play-linux-${ARCH}_v${APPVERSION}.zip ${UPDATE_URL}/linux/${ARCH}/q-play-linux-${ARCH}_v${APPVERSION}.zip

  unzip -t q-play-linux-${ARCH}_v${APPVERSION}.zip
  if [ "$?" != 0 ]
  then
    echo "Received invalid zip file from server."
    exit 1
  fi
  rm -rf q-play-linux-${ARCH}
  unzip -o q-play-linux-${ARCH}_v${APPVERSION}.zip
  rm -f q-play-linux-${ARCH}_v${APPVERSION}.zip

  chmod 755 -R q-play-linux-${ARCH}/q-play

  echo "Cleanup of old ScreenBuddy content."
  echo "Try to remove ScreenBuddy.desktop autostart script."
  sudo rm /etc/xdg/autostart/ScreenBuddy.desktop
  echo "Try to remove ScreenBuddy.desktop desktop shortcut."
  rm ${HOME}/Desktop/ScreenBuddy.desktop
  echo "Try to remove ScreenBuddy program folders."
  rm -rf ScreenBuddy*

  # Autostart
  echo "Create autostart script /etc/xdg/autostart/q-play.desktop"
  sudo touch /etc/xdg/autostart/q-play.desktop
  sudo truncate -s0 /etc/xdg/autostart/q-play.desktop
  echo "[Desktop Entry]" | sudo tee -a /etc/xdg/autostart/q-play.desktop
  echo "Type=Application" | sudo tee -a /etc/xdg/autostart/q-play.desktop
  echo "Name=Q-play" | sudo tee -a /etc/xdg/autostart/q-play.desktop
  echo "Comment=Q-play app" | sudo tee -a /etc/xdg/autostart/q-play.desktop
  echo "NoDisplay=false" | sudo tee -a /etc/xdg/autostart/q-play.desktop
  echo "Exec=${HOME}/q-play-linux-${ARCH}/q-play ${RELEASE}" | sudo tee -a /etc/xdg/autostart/q-play.desktop
  if [ ! -f "${HOME}/q-play-linux-${ARCH}/q-play" ]
  then
    echo "Create q-play symlink to qplay executable"
    chmod 755 -R q-play-linux-${ARCH}/qplay
    ln -s "${HOME}/q-play-linux-${ARCH}/qplay" "${HOME}/q-play-linux-${ARCH}/q-play"
  fi
  sudo chmod 755 /etc/xdg/autostart/q-play.desktop
  sudo chown ${USER} /etc/xdg/autostart/q-play.desktop

  # Disable any form of screen saver / screen blanking / power management
  echo "Create file ${HOME}/.xinitrc to disable any form of screen saver / screen blanking / power management."
  touch ${HOME}/.xinitrc
  chmod 755 ${HOME}/.xinitrc
  truncate -s0 ${HOME}/.xinitrc
  echo "xset s off" >> ${HOME}/.xinitrc
  echo "xset -dpms" >> ${HOME}/.xinitrc
  echo "xset s noblank" >> ${HOME}/.xinitrc
  echo "exec /etc/alternatives/x-session-manager" >> ${HOME}/.xinitrc

  # Disable any form of screen saver / screen blanking / power management
  echo "Create file /etc/xdg/openbox/autostart to disable any form of screen saver / screen blanking / power management."
  sudo touch /etc/xdg/openbox/autostart
  sudo chmod 755 /etc/xdg/openbox/autostart
  sudo truncate -s0 /etc/xdg/openbox/autostart
  echo "xset s off" | sudo tee -a /etc/xdg/openbox/autostart
  echo "xset s noblank" | sudo tee -a /etc/xdg/openbox/autostart
  echo "xset -dpms" | sudo tee -a /etc/xdg/openbox/autostart
  # Allow quitting the X server with CTRL-ATL-Backspace
  echo "setxkbmap -option terminate:ctrl_alt_bksp" | sudo tee -a /etc/xdg/openbox/autostart

  # Disable any form of screen saver / screen blanking / power management
  echo "Create file /etc/xdg/lxsession/LXDE-pi/autostart to disable any form of screen saver / screen blanking / power management."
  sudo touch /etc/xdg/lxsession/LXDE-pi/autostart
  sudo chmod 755 /etc/xdg/lxsession/LXDE-pi/autostart
  sudo truncate -s0 /etc/xdg/lxsession/LXDE-pi/autostart
  echo "@lxpanel --profile LXDE-pi" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart
  echo "@pcmanfm --desktop --profile LXDE-pi" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart
  echo "@point-rpi" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart
  echo "@xset dpms 0 0 0" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart
  echo "@xset s off" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart
  echo "@xset -dpms" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart
  echo "@xset s noblank" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart

  # Disable any form of screen saver / screen blanking / power management
  echo "Create file /etc/xdg/lxsession/LXDE/autostart to disable any form of screen saver / screen blanking / power management."
  sudo touch /etc/xdg/lxsession/LXDE/autostart
  sudo chmod 755 /etc/xdg/lxsession/LXDE/autostart
  sudo truncate -s0 /etc/xdg/lxsession/LXDE/autostart
  echo "@lxpanel --profile LXDE" | sudo tee -a /etc/xdg/lxsession/LXDE/autostart
  echo "@pcmanfm --desktop --profile LXDE" | sudo tee -a /etc/xdg/lxsession/LXDE/autostart
  echo "xset s off" | sudo tee -a /etc/xdg/lxsession/LXDE/autostart
  echo "xset s noblank" | sudo tee -a /etc/xdg/lxsession/LXDE/autostart
  echo "xset -dpms" | sudo tee -a /etc/xdg/lxsession/LXDE/autostart

  # Disable any form of screen saver / screen blanking / power management
  echo "Create file ${HOME}/.config/lxsession/LXDE-pi/autostart to disable any form of screen saver / screen blanking / power management."
  mkdir -p ${HOME}/.config/lxsession/LXDE-pi/
  touch ${HOME}/.config/lxsession/LXDE-pi/autostart
  truncate -s0 ${HOME}/.config/lxsession/LXDE-pi/autostart
  echo "@lxpanel --profile LXDE-pi" >> ${HOME}/.config/lxsession/LXDE-pi/autostart
  echo "@pcmanfm --desktop --profile LXDE-pi" >> ${HOME}/.config/lxsession/LXDE-pi/autostart
  echo "@point-rpi" >> ${HOME}/.config/lxsession/LXDE-pi/autostart
  echo "@xset dpms 0 0 0" >> ${HOME}/.config/lxsession/LXDE-pi/autostart
  echo "@xset s off" >> ${HOME}/.config/lxsession/LXDE-pi/autostart
  echo "@xset -dpms" >> ${HOME}/.config/lxsession/LXDE-pi/autostart
  echo "@xset s noblank" >> ${HOME}/.config/lxsession/LXDE-pi/autostart

  # Clear terminal history
  #history -c clears
  #> ~/.bash_history

  # Reboot
  echo "Will reboot in 20 seconds."
  sleep 20
  sudo reboot
fi