#!/bin/bash

# =================================================================
# Shell script to download JDK and JRE binaries from Oracle 
# website using wget in terminal/command prompt.
# =================================================================
# Forked from: https://gist.github.com/P7h/9741922
# -----------------------------------------------------------------
#
# You can download all the binaries at once just by changing:
# - VER_UPDATE
# - BASE_URL
#
# Features:
# 1. Resumes a broken / interrupted [previous] download, if any.
# 2. Renames the file to a proper name with including platform info.
# 3. Downloads the following from Oracle Website with one shell invocation.
#    a. Windows 64 and 32 bit;
#    b. Linux 64 and 32 bit (use more enhanced 'array')
#    c. API Docs (use more enhanced 'array')
#    d. You can add more to the list of downloads are per your requirement.
#
# If you have you own scripts location and you want to download to another
# instead of placing the scipt there, you will have to source it, for example:
# $ cd ~/desired/location
# $ chmod 700 ~/path/to/script.sh
# $ . ~/path/to/script.sh
# -----------------------------------------------------------------

# Latest JDK/JRE version (in this case 8u74 released in February 2016)
VER_UPDATE=8u74

# URL for the lates updates
BASE_URL=http://download.oracle.com/otn-pub/java/jdk/8u74-b02/

# JDK URL PART
JDK=jdk-${VER_UPDATE}

# JRE URL PART
JRE=jre-${VER_UPDATE}

# create subdir for version in cwd - this is the reason for sourcing 
# or running the script ONLY from within the target location either way 
# the subdirectory will be created in root location for the script
mkdir ${VER_UPDATE} && cd ${VER_UPDATE}

# declare 'array' of packages
declare -a PACKAGES=(${JDK} ${JRE})

# declare 'array' of platform specific downloads
declare -a PLATFORMS=("-windows-x64.exe" "-windows-i586.exe")

# more enhanced 'array' of downloads (more files)
# # declare -a PLATFORMS=("-windows-x64.exe" "-linux-x64.tar.gz" "-docs-all.zip" "-windows-i586.exe" "-linux-i586.tar.gz")

# loop to get what you need
for package in "${PACKAGES[@]}"
do
  for platform in "${PLATFORMS[@]}"
  do
    wget -c --no-check-certificate --no-cookies \
    --header "Cookie: oraclelicense=accept-securebackup-cookie" \
    "${BASE_URL}${package}${platform}"
  done
done