play_cntrl bash script

play_cntrl.sh

#!/bin/bash
set +v
clear 
PLAY_VERSION=$1
PLAY_DIR="/usr/local/share/play"
PLAY_EXT_PATH=$PLAY_DIR/play-$PLAY_VERSION

main() {
	echo "check for availability in the system..."
	if [ ! -d $PLAY_DIR/$PLAY_VERSION ]; then
		down_version;
		set_links_to_play;
	else
		echo "play version $PLAY_VERSION available in the system"
		echo "do change the default version to $PLAY_VERSION"
		set_links_to_play;
	fi
}

set_links_to_play() {
	cd $PLAY_DIR
	check_link_dir $PLAY_VERSION
	ln -s play-$PLAY_VERSION $PLAY_VERSION
	check_link_exists /usr/local/bin/play
	ln -s $PLAY_DIR/$PLAY_VERSION/play /usr/local/bin/play		
}

check_play_ext_path() {
	if [ -d $PLAY_EXT_PATH ]; then
		rm -RI $PLAY_EXT_PATH;
	fi;
};

check_link_dir() {
	if [ -d $1 ]; then
		rm $1;
	fi;

}

check_link_exists() {
	if [ -f $1 ]; then
		rm $1;
	fi;
};

check_main_path() {
	if [ ! -d $PLAY_DIR ]; then
		mkdir $PLAY_DIR;
	fi
};

down_version() {
	echo "downloading $PLAY_VERSION"
	check_main_path
	cd $PLAY_DIR

	if [ ! -f play-$PLAY_VERSION ]; then
		wget -c http://download.playframework.org/releases/play-$PLAY_VERSION.zip
	fi

	if [ -d $PLAY_DIR ]; then
		#directory exists
		check_play_ext_path
		unzip play-$PLAY_VERSION.zip -d $PLAY_DIR
	else
		#dir not exists
		mkdir $PLAY_DIR
		unzip play-$PLAY_VERSION.zip -d $PLAY_DIR
	fi

	set_links_to_play;	
};

main