#!/bin/bash

# Script: osmc-java-jdownloader-installer.sh
# Author: Jozef Pažin
# Description: Wizard to install the current version of jdownloader on raspberry pi running osmc kodi.
# License: MIT
# How to run:
# - Check it first if this code is correct because this script need to be run under root
#   and run gist from web is not recommended procedure in terms of security 
#   https://gist.github.com/atiris/34dc670264274b3a472f2a718e4de83a
# - And then run it:
#     curl https://gist.github.com/atiris/34dc670264274b3a472f2a718e4de83a/raw | sudo bash
#   or
#     wget https://gist.github.com/atiris/34dc670264274b3a472f2a718e4de83a/raw | sudo bash
# Inspiration:
# - https://gist.github.com/ribasco/fff7d30b31807eb02b32bcf35164f11f
# - https://github.com/PlusMinus0/headless-jd2-docker
# - https://gist.github.com/leosuncin/50367b3c905fe8699b13bd85ad26071b

if [[ "$EUID" -ne 0 ]]; then
  echo ""
  echo "Please login as root: sudo su"
  echo ""
  return
fi

# Colors
NC='\033[0m'
RED='\033[0;91m'
GREEN='\033[0;92m'
BLUE='\033[0;94m'
YELLOW='\033[0;93m'

echo ""
# Java

JAVA_VERSION_LOCAL=`echo $(java -version 2>&1)| awk -F \" '{print $2}'`
if [[ $JAVA_VERSION_LOCAL = *[!\ ]* ]]; then
  echo -e "Local java version is ""$BLUE""$JAVA_VERSION_LOCAL""$NC"
  response="n"
  read -r -p $'\e[91mInstall java anyway?\e[0m [y/N] ' response
  response=${response,,}
else
  echo -e "$YELLOW""Java is not installed.""$GREEN"" I will run the installation for you.""$NC"
  response="y"
fi

if [[ $response =~ ^(yes|y) ]] || [[ -z $response ]]; then
  echo "-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: SKS 1.1.5
Comment: Hostname: keyserver.ubuntu.com
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=CziK
-----END PGP PUBLIC KEY BLOCK-----" > temporarykey.txt

  apt-key add temporarykey.txt

  rm -f temporarykey.txt

  echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee /etc/apt/sources.list.d/webupd8team-java.list
  echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list

  apt-get update

  apt-get install -y oracle-java8-installer

  apt-get install -y oracle-java8-set-default

  echo ""
  echo -e "$GREEN""Java installation is complete.""$NC"
  echo "Actual java vesion on your system is:"
  java -version
else
  echo "Java installation skipped."
fi

echo ""
# JDownloader

if [ -e /opt/JDownloader/JDownloader.jar ]; then
  FILE_DATE=$(date -r /opt/JDownloader/JDownloader.jar +%Y-%m-%d)
  echo -e "JDownloader already installed. File date is ""$BLUE""$FILE_DATE""$NC""."
  echo ""
  response="n"
  read -r -p $'\e[0mRemove it and install actual JDownloader anyway?\e[0m [y/N] ' response
  response=${response,,}
else
  echo -e "$YELLOW""JDownloader is not installed.""$GREEN"" Let me run it.""$NC"
  response="y"
fi

if [[ $response =~ ^(yes|y) ]] || [[ -z $response ]]; then
  echo -e "$BLUE"
  echo "I'll download JDownloader from official site jdownloader.org."
  echo "Then I will run the installation process several times, until JDownloader"
  echo "ask you for login and password. Please press \"y\" at that time, and set"
  echo "your credentials from my.jdownloader.org (you must first be registered)."
  echo "Then wait some time (few seconds) until JDownloader save this settings"
  echo "and interrupt JDownloader installation by pressing \"CTRL+C\"."
  echo "You can continue in next step with installation of daemon,"
  echo "to start JDownloader automatically on reboot or after crash."
  echo -e "$NC"
  read -p "Press enter to OK"
  echo ""

  RUN_AS_USER=root
  if [[ "$RUN_AS_USER" == 'root' ]] && [[ `id -u osmc 2>/dev/null || echo -1` -ge 0 ]]; then 
    echo "Install JDownloader with 'osmc' user rights."
    RUN_AS_USER=osmc
  fi
  if [[ "$RUN_AS_USER" == 'root' ]] && [[ `id -u pi 2>/dev/null || echo -1` -ge 0 ]]; then 
    echo "Install JDownloader with 'pi' user rights."
    RUN_AS_USER=pi
  fi
  if [ "$RUN_AS_USER" == 'root' ]; then 
    echo "Installing as 'root'."
  fi

  if [ ! -d /opt/JDownloader ]; then
    mkdir -p /opt/JDownloader
    echo "Folder /opt/JDownloader created."
  else
    rm -rf /opt/JDownloader/*
    echo "Folder for JDownloader cleaned."
  fi
  chown -fR $RUN_AS_USER:users /opt/JDownloader

  sudo -u $RUN_AS_USER wget -O /opt/JDownloader/JDownloader.jar --progress=bar:force http://installer.jdownloader.org/JDownloader.jar

  echo -e "$BLUE"
  echo "Starting JDownloader installation."
  echo "Wait for the login / password request."
  echo "Register here: https://my.jdownloader.org/"
  echo -e "$NC"

  doNextLoop=1
  while [ $doNextLoop -eq 1 ]
  do
    doNextLoop=0
    sudo -u $RUN_AS_USER java -jar /opt/JDownloader/JDownloader.jar -norestart
    echo ""
    read -r -p $'\e[0mYou have already seen a request to enter your login information?\e[0m [y/N] ' response
      response=${response,,}
      if [[ $response =~ ^(no|n| ) ]] || [[ -z $response ]]; then
        doNextLoop=1
      fi
  done
  echo -e "$GREEN""JDownloader instalation is complete.""$NC"
else
  echo "JDownloader installation skipped."
fi

echo ""
# Service systemd jdownloader

if [ -e /etc/systemd/system/jdownloader.service ]; then
  FILE_DATE=$(date -r /etc/systemd/system/jdownloader.service +%Y-%m-%d)
  echo "Service jdownloader already exists. File changed at $FILE_DATE."
  echo ""
  response="n"
  read -r -p $'\e[0mReplace existing with default service implementation?\e[0m [y/N] ' response
  response=${response,,}
else
  echo -e "$YELLOW""Service for jdownloader not exists yet.""$GREEN""No worries, I will create it.""$NC"
  response="y"
fi

if [[ $response =~ ^(yes|y| ) ]] || [[ -z $response ]]; then
  echo ""
  touch /opt/JDownloader/JDownloader.pid

  echo "[Unit]
Description=JDownloader2 headless server daemon with autorestart.
After=network.target

[Service]
Type=simple
Environment=\"DIR=/opt/JDownloader\"
WorkingDirectory=\${DIR}
ExecStart=/usr/bin/java -Djava.awt.headless=true -jar \${DIR}/JDownloader.jar
Restart=on-failure
RestartSec=10s

[Install]
WantedBy=multi-user.target
" > /etc/systemd/system/jdownloader.service

  if [ -e /etc/systemd/system/jdownloader.service ]; then
    systemctl daemon-reload
    echo -e "Service /etc/systemd/user/jdownloader.service > ""$GREEN""created OK""$NC"
    systemctl enable jdownloader
    echo -e "Service jdownloader enabled > ""$GREEN""OK""$NC"
    systemctl start jdownloader

    SERVICE_STATE=$(pgrep mysql | wc -l)
    if ["$SERVICE_STATE" -eq 0]; then
      echo -e "$RED""WARNING! Service jdownloader is down.""$NC"
    else
      echo "Service jdownloader started > ""$GREEN""OK""$NC"
    fi

    echo ""
    echo -e "$GREEN""Service installation is complete.""$NC"
    echo "You can check service status with: systemctl status jdownloader"
  else
    echo -e "$RED""ERROR! I can not create a service.""$NC"
  fi
else
  echo "Service installation skipped."
fi

echo ""
# Final message

echo -e "$GREEN""That's all, I hope everything works for you.""$NC"
echo -e "$GREEN""Now you can check JDownloader on https://my.jdownloader.org/""$NC"