#! /bin/bash

# - Take new tar file as argument		DONE
# - Verify argument is valid			DONE
# - Verify script is running as sudo		DONE
# - Move existing firefox to firefox.OLD	DONE
# - create directory for new installation	DONE
# - unpack tar file to new location		DONE
# - Optional, verify desktop file extsts


helpFunction()
{
  echo " "
  echo "Provides convenient means to install a new Nextcloud AppImage file."
  echo "Pass new AppImage file as argument and this script will update the symlinks and verify installation."
  echo "Must run with root privileges."
  echo " "
  echo "Usage: sudo $0 [filename]"
  echo " "
}




## Take input and verify file and root user##

filename=$(basename $1)  ##Take Basename in case file in cae user is in unusual directory when calling script.
projectdir="/home/mike/Software/Nextcloud"
imagepath="$projectdir/apps"
executablelink="/usr/local/bin"
desktoppath="/usr/local/share/applications"
assetspath="$projectdir/assets"
version="0.2"

# Start Script #

echo "Nextcloud Client Update Script v$version"


# Check Arguments #

if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
  helpFunction
  exit 0
fi

  # Check if user-provided file is valid #

if ! [ -f "$1" ]; then
  echo "$1 not found."
  helpFunction
  exit 1
elif ! [ -f "$imagepath/$filename" ]; then
  echo "Moving $1 to $imagepath/"
  mv $1 $imagepath/
  echo "Done."
fi

if [ -z "$filename" ]
then
  echo " "
  echo "No filename given.  Aborting."
  helpFunction
  exit 1
fi

if [ "$USER" != "root" ]; then
  echo "Must be running as root to install new software.  Use sudo or root user"
  helpFunction
  exit 1
fi

# Argument and file checking complete...#

echo "Updating Nextcloud client..."


# Ensure AppImage is Executable

echo "Setting $filename as executable"
sudo chmod +x $imagepath/$filename
echo "Done."


# Ensure symlink is set

echo "Setting symlink /usr/local/bin/nextcloud/"
ln -fs $imagepath/$filename $executablelink/nextcloud
echo "Done."


# Ensure Desktop file is set

if ! [ -f "$assetspath/nextcloud.desktop" ]; then
  echo "WARNING: nextcloud.desktop file not found!"
  echo "WARNING: Desktop file not set!"
  exit 1
fi

echo "Setting nextcloud.desktop in /usr/local/share/applications and verifying permissions"
ln -fs $assetspath/nextcloud.desktop $desktoppath/
chmod +x $assetspath/nextcloud.desktop
echo "Done."

echo "Update Complete.  Done."
exit 0