#! /bin/bash

FULLPATH=$(readlink -f $0)
DST=${FULLPATH%/*}/algs4

mkdir -p $DST
pushd $DST

mkdir bin
wget http://algs4.cs.princeton.edu/code/stdlib.jar
wget http://algs4.cs.princeton.edu/code/algs4.jar
wget http://algs4.cs.princeton.edu/linux/checkstyle.zip
wget http://algs4.cs.princeton.edu/linux/findbugs.zip

unzip checkstyle.zip
rm checkstyle.zip
unzip findbugs.zip
rm findbugs.zip

wget http://algs4.cs.princeton.edu/linux/checkstyle.xml
wget http://algs4.cs.princeton.edu/linux/findbugs.xml
wget http://algs4.cs.princeton.edu/linux/checkstyle
wget http://algs4.cs.princeton.edu/linux/findbugs
wget http://algs4.cs.princeton.edu/linux/config.sh

chmod 700 checkstyle findbugs config.sh
mv checkstyle findbugs config.sh bin
mv checkstyle.xml checkstyle-5.5
mv findbugs.xml findbugs-2.0.1

sed -i "s'INSTALL=.*$'INSTALL=$DST'" $DST/bin/checkstyle
sed -i "s'INSTALL=.*$'INSTALL=$DST'" $DST/bin/findbugs
sed -i "s'\(if \[.*$\)'\1\n\n\tDST=$DST'" $DST/bin/config.sh
sed -i "s'HOME\/algs4'DST'g" $DST/bin/config.sh

popd

(cat << EOF
public class HelloWorld {
   public static void main(String[] args) {
      System.out.println("Hello, World");
   }
}
EOF
) > HelloWorld.java && javac HelloWorld.java && java -cp . HelloWorld

$DST/bin/checkstyle HelloWorld.java
$DST/bin/findbugs HelloWorld.class
rm HelloWorld.java HelloWorld.class

echo "now point to:"
echo "  http://algs4.cs.princeton.edu/code/"
echo "  http://algs4.cs.princeton.edu/home/"
echo "  https://class.coursera.org/algs4partI-002/class/index"
echo "  http://coursera.cs.princeton.edu/algs4/testing/percolation/"
echo "  http://coursera.cs.princeton.edu/algs4/testing/collinear/"
echo "  http://coursera.cs.princeton.edu/algs4/testing/8puzzle/"
echo "  http://coursera.cs.princeton.edu/algs4/testing/kdtree/"