#!/bin/bash

destdir="/usr/lib/mozilla-firefox"
FILE="$destdir/res/forms.css"

BEGIN="/*** BEGIN EXTRA FIREFOX WIDGETS ***/"
sed_BEGIN="$(echo "$BEGIN" | sed 's@\*@\\*@g')"
END="/*** END EXTRA FIREFOX WIDGETS ***/"
sed_END="$(echo "$END" | sed 's@\*@\\*@g')"

function install()
{

# Check if widgets have already been installed
grep "$sed_BEGIN" "$FILE" &> /dev/null
if [ "$?" = 0 ] ; then
	echo "The text \"$BEGIN\" was found in $FILE."
	echo "The CSS appears to have already been installed."
	css=true
else
	css=false
fi

if [ -d "$destdir/res/form-widgets" ] ; then
	echo "The directory "$destdir/res/form-widgets" already exists."
	echo "The widget images appear to be installed."
	css=true
else
	css=false
fi

if [ "$css" = false ] ; then
	# Create a backup if wanted
	echo "We are about to overwrite $FILE."
	echo "Would you like to create a backup? (y/n)"
	read backup_choice
	case "$backup_choice" in
		y | Y | yes | Yes | YES ) 
			echo "Creating backup $FILE.bak"
			#sudo cp "$FILE" "$FILE".bak
		;;
		n | N | no | No | NO )
			:	
		;;
	esac

	# append forms-extra.css to forms.css
	temp="$(cat forms-extra.css)"
	#sudo echo "$temp" >> "$destdir"/res/forms.css
	#sudo cp -r form-widgets "$destdir"/res
}	
	
function uninstall()
{
grep "$sed_BEGIN" "$FILE" &> /dev/null
if [ "$?" = 0 ] ; then
	css=true
else
	echo "Text \"$BEGIN\" not found in $FILE"
	echo "The CSS does not appear to be installed."
	css=false
fi	

if [ -d "$destdir/res/form-widgets" ] ; then
	widgets=true
else
	echo "The directory "$destdir/res/form-widgets" does not exist."
	echo "The widget images do not appear to be installed."
	widgets=false
fi

delete=false
if [ "$css" = true ] ; then
	temp="$(cat "$FILE" | while read line; do
		if [ "$line" = "$BEGIN" ]; then
			delete=true
		fi

		if [ "$delete" = false ]; then
			echo "$line"
		fi

		if [ "$delete" = true ] ; then
			if [ "$line" = "$END" ] ; then
				delete=false
			fi
		fi
	done)"
	
	echo "Restoring "$FILE""
	echo "$temp" > "$FILE"
fi

if [ "$widgets" = true ] ; then
	echo "Removing widget images."
	sudo rm -r "$destdir/res/form-widgets"
fi

echo "Firefox widgets successfully removed."
}


echo "1 ) Install Firefox Widgets"
echo "2 ) Remove Firefox Widgets"
echo "Select an Option: "
read option
case  "$option" in
	1 ) 
		install
	;;
	2 ) 
		uninstall
	;;
	* ) 
		echo "Unknown Option!"
	;;
esac