#!/bin/bash

# Functions
echodep()
{
	line=" - $1"
	
	while [ ${#line} -lt 50 ]
	do
		line="$line."
	done
	
	echo -ne "$line"
    
	if eval "$2"
	then
		echo -e "\e[32m[Found]\e[0m"
	else
		echo -e "\e[31m[Not Found]\e[0m"
	fi
}

# Check installation priviledge
if [ "$(id -u)" != "0" ]; then
	echo "Please make sure you are running this installer with sudo or as root." 1>&2
	exit 1
fi

DIR=$(pwd)
IDIR="/usr/lib/mono/xbuild/MonoGame/v3.0"

# Show dependency list
echo "Dependencies:"
echodep "mono-runtime" "type 'mono' > /dev/null 2>&1"
echo ""
read -p "Continue (Y, n): " choice2
case "$choice2" in 
	n|N ) exit ;;
	*) ;;
esac

# Check previous versions
if type "mgcb" > /dev/null 2>&1
then
	echo "Previous version detected, trying to uninstall..."
	
	# Try and uninstall previus versions
	if [ -f /opt/monogame/uninstall.sh ]
	then
		sudo bash /opt/monogame/uninstall.sh
	elif [ -f /opt/MonoGameSDK/uninstall.sh ]
	then
		sudo bash /opt/MonoGameSDK/uninstall.sh
	else
		echo "Could not uninstall, please uninstall any previous version of MonoGame SDK manually." 1>&2
		exit 1
	fi
fi

# MonoGame SDK installation
echo "Installing MonoGame SDK..."

rm -rf "$IDIR"
mkdir -p "$IDIR"
cp -rf "$DIR/MonoGameSDK/." "$IDIR" -R
rm -rf "/opt/MonoGameSDK"
ln -s "$IDIR" "/opt/MonoGameSDK"

# Fix Permissions
chmod +x "$IDIR/Tools/ffmpeg"
chmod +x "$IDIR/Tools/ffprobe"

# Monogame Pipeline terminal commands
echo "Creating launcher items..."

cat > /usr/bin/monogame-pipeline-tool <<'endmsg'
#!/bin/bash
mono /usr/lib/mono/xbuild/MonoGame/v3.0/Tools/Pipeline.exe "$@"
endmsg
chmod +x /usr/bin/monogame-pipeline-tool

cat > /usr/bin/mgcb <<'endmsg'
#!/bin/bash
mono /usr/lib/mono/xbuild/MonoGame/v3.0/Tools/MGCB.exe "$@"
endmsg
chmod +x /usr/bin/mgcb
cp "$DIR/Main/mgcbcomplete" "/etc/bash_completion.d/mgcb"

# MonoGame icon
mkdir -p /usr/share/icons/hicolor/scalable/mimetypes
cp $DIR/Main/monogame.svg /usr/share/icons/hicolor/scalable/mimetypes/monogame.svg
gtk-update-icon-cache /usr/share/icons/hicolor/ -f &> /dev/null

# Application launcher
cat > /usr/share/applications/MonogamePipeline.desktop <<'endmsg'
[Desktop Entry]
Version=1.0
Encoding=UTF-8
Name=MonoGame Pipeline Tool
GenericName=MonoGame Pipeline Tool
Comment=Creates platform specific content files.
Exec=monogame-pipeline-tool %F
TryExec=monogame-pipeline-tool
Icon=monogame
StartupNotify=true
Terminal=false
Type=Application
MimeType=text/x-mgcb;
Categories=Development;
StartupWMClass=Pipeline
endmsg

# Man pages
echo "Installing man pages..."
IFS=':' read -r -a ARRAY <<< "$(manpath)"
for MANPATH in "${ARRAY[@]}"
do
	if [ -d "$MANPATH/man1" ]
	then
		cp -f "$DIR/Main/mgcb.1" "$MANPATH/man1/mgcb.1"
		gzip -f "$MANPATH/man1/mgcb.1"
    	break
    fi
done

# Mimetype
echo "Adding mimetype..."
touch mgcb.xml
xdg-mime uninstall mgcb.xml
xdg-mime install $DIR/Main/x-mgcb.xml > /dev/null
xdg-mime default "MonogamePipeline.desktop" text/mgcb

# Uninstall script
chmod +x $IDIR/uninstall.sh
ln -s $IDIR/uninstall.sh /usr/bin/monogame-uninstall

echo "Installation complete"
echo ""
echo " - To uninstall MonoGame SDK you can run 'monogame-uninstall' from terminal."
echo " - To install templates for MonoDevelop, go Tools > Extensions > Gallery > Game Development > MonoGame Extensions, and install it."
echo " - To install templates for Rider simply run 'dotnet new --install MonoGame.Templates.CSharp'"
echo ""
echo ""