#!/usr/bin/env bash

# Installs Ripple Middle Tier on Raspberry Pi
# run using: source install_ripple_rpi.sh
# run as normal user, eg pi

# 20 June 2017

echo "-----------------------------------------------------------------------"
echo 'Preparing environment'
echo "-----------------------------------------------------------------------"

sudo apt-get update
sudo apt-get install -y build-essential libssl-dev
sudo apt-get install -y wget gzip openssh-server curl python-minimal unzip

# Install NVM

echo "-----------------------------------------------------------------------"
echo 'Installing NVM'
echo "-----------------------------------------------------------------------"

curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.32.1/install.sh | bash

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh" # This loads nvm

command -v nvm

echo "NVM installed"

echo "-----------------------------------------------------------------------"
echo 'Installing Node.js'
echo "-----------------------------------------------------------------------"

nvm install 6

#make Node.js available to sudo

sudo ln -s /usr/local/bin/node /usr/bin/node
sudo ln -s /usr/local/lib/node /usr/lib/node
sudo ln -s /usr/local/bin/npm /usr/bin/npm
sudo ln -s /usr/local/bin/node-waf /usr/bin/node-waf
n=$(which node);n=${n%/bin/node}; chmod -R 755 $n/bin/*; sudo cp -r $n/{bin,lib,share} /usr/local

echo "Node.js installed:"
node -v

echo "-----------------------------------------------------------------------"
echo 'Installing QEWD and the Ripple Middle Tier components'
echo "-----------------------------------------------------------------------"

cd ~
mkdir qewd
cd qewd
npm install qewd-ripple ewd-client
npm install tcp-netx
npm install ewd-redis-globals
sudo npm install -g pm2

echo "-----------------------------------------------------------------------"
echo 'Moving qewd-ripple and QEWD files into place'
echo "-----------------------------------------------------------------------"

mv ~/qewd/node_modules/qewd-ripple/example/ripple-rpi.js ~/qewd/ripple-rpi.js

cd ~/qewd
mkdir www
cd www
mkdir qewd-monitor
mkdir qewd-content-store

cp ~/qewd/node_modules/qewd-monitor/www/bundle.js ~/qewd/www/qewd-monitor
cp ~/qewd/node_modules/qewd-monitor/www/*.html ~/qewd/www/qewd-monitor
cp ~/qewd/node_modules/qewd-monitor/www/*.css ~/qewd/www/qewd-monitor

cp ~/qewd/node_modules/qewd-content-store/www/bundle.js ~/qewd/www/qewd-content-store
cp ~/qewd/node_modules/qewd-content-store/www/*.html ~/qewd/www/qewd-content-store

cp ~/qewd/node_modules/ewd-client/lib/proto/ewd-client.js ~/qewd/www/ewd-client.js

# ============ WebRTC installation ========

# Server

cp -r ~/qewd/node_modules/qewd-ripple/webrtc/server/ ~/videochat-socket-server/
cp -r ~/qewd/node_modules/qewd-ripple/webrtc/ssl/ ~/qewd/ssl/
cd ~/videochat-socket-server
npm install
pm2 start pm2.json
pm2 save

# Client

# cp -r ~/qewd/node_modules/qewd-ripple/webrtc/client/ ~/qewd/www/videochat/
#   this is copied from the client s/w repository later

# TURN Server

# Optional - uncomment if needed
#  You'll also need to change the turnServer definition
#  at the top of ~/qewd/www/videochat/videochat.js

# cd ~/qewd/node_modules/qewd-ripple/webrtc/turn
# echo 'deb http://http.us.debian.org/debian jessie main' | sudo tee /etc/apt/sources.list.d/coturn.list
# gpg --keyserver pgpkeys.mit.edu --recv-key 8B48AD6246925553
# gpg -a --export 8B48AD6246925553 | sudo apt-key add -
# gpg --keyserver pgpkeys.mit.edu --recv-key 7638D0442B90D010
# gpg -a --export 7638D0442B90D010 | sudo apt-key add -
# gpg --keyserver pgpkeys.mit.edu --recv-key CBF8D6FD518E17E1
# gpg -a --export CBF8D6FD518E17E1 | sudo apt-key add -
# sudo apt-get update
# sudo apt-get install coturn=4.2.1.2-1 -y
# sudo cp -f ./turnserver.conf /etc/
# sudo cp -f ./turnuserdb.conf /etc/
# sudo cp -f ./coturn /etc/default
# sudo service coturn start

# ============  WebRTC installed ==========

echo "QEWD / Node.js and Ripple middle tier is now installed"

echo "-----------------------------------------------------------------------"
echo " Installing Redis..."
echo "-----------------------------------------------------------------------"

cd ~
wget http://download.redis.io/redis-stable.tar.gz
tar xvzf redis-stable.tar.gz

# rename the created redis directory to just redis

mv redis-stable redis
cd redis

# build Redis

echo "-----------------------------------------------------------------------"
echo "Building Redis - be patient, this will take some time!"
echo "-----------------------------------------------------------------------"

make
sudo make install
cd utils

PORT=6379
CONFIG_FILE=/etc/redis/6379.conf
LOG_FILE=/var/log/redis_6379.log
DATA_DIR=/var/lib/redis/6379
EXECUTABLE=/usr/local/bin/redis-server

echo -e "${PORT}\n${CONFIG_FILE}\n${LOG_FILE}\n${DATA_DIR}\n${EXECUTABLE}\n" | sudo ./install_server.sh
sudo update-rc.d redis_6379 defaults

echo "Redis is now installed and running, listening on port 6379"

cd ~/qewd


echo "-----------------------------------------------------------------------"
echo " Installing MySQL Server..."
echo "-----------------------------------------------------------------------"

# Set default MySQL password to get rid of the prompt during install
sudo debconf-set-selections <<< 'mysql-server mysql-server/root_password password password'
sudo debconf-set-selections <<< 'mysql-server mysql-server/root_password_again password password'

# Install MySQL packages
sudo apt-get install -y mysql-server
sudo service mysql start

# Run the database scripts
cd ~
mysql -u root -ppassword < ~/qewd/node_modules/qewd-ripple/data/create_database_and_tables.sql
mysql -u root -ppassword < ~/qewd/node_modules/qewd-ripple/data/populate_general_practitioners_table.sql
mysql -u root -ppassword < ~/qewd/node_modules/qewd-ripple/data/populate_medical_departments_table.sql
mysql -u root -ppassword < ~/qewd/node_modules/qewd-ripple/data/populate_patients_table.sql

echo "-----------------------------------------------------------------------"
echo " MySQL environment and data set up"
echo "-----------------------------------------------------------------------"


echo "-----------------------------------------------------------------------"
echo "Fetching and installing the Ripple UI code"
echo "-----------------------------------------------------------------------"

# Retrieve the UI code

# To download the version of the UI that contains only core headings, please use the following link: 

#   https://github.com/PulseTile/PulseTile/blob/master/build/PulseTile-core-1.0.0.zip;
 
# In case you need a previous UI build - you'll see the builds available for downloading at:

#   https://github.com/PulseTile/PulseTile/blob/master/build/" 

cd ~
#
# If you want the latest development version: 
#   wget -O ripple_ui.zip https://github.com/PulseTile/PulseTile/blob/develop/build/PulseTile-latest.zip?raw=true
#

wget -O ripple_ui.zip https://github.com/PulseTile/PulseTile/blob/master/build/PulseTile-latest.zip?raw=true

unzip ripple_ui.zip

# move the files into place

mv -v ~/dist/* ~/qewd/www/

# Install Swagger UI and specification

echo "-----------------------------------------------------------------------"
echo " Installing Swagger UI & Specification for Ripple"
echo "-----------------------------------------------------------------------"

cd ~/qewd/www
mkdir swagger
git clone https://github.com/swagger-api/swagger-ui.git
cp ~/qewd/node_modules/qewd-ripple/swagger/index.html ~/qewd/www/swagger-ui/dist
cp ~/qewd/node_modules/qewd-ripple/swagger/*.json ~/qewd/www/swagger
cp ~/qewd/node_modules/qewd-ripple/swagger/createSwaggerSpec.js ~/qewd


# ========== Install nginx Proxy, listening on port 80 =================

#  alias /var/www to the QEWD www directory

sudo ln -s ~/qewd/www/ /var/www
sudo apt-get install -y nginx
sudo cp ~/qewd/node_modules/qewd-ripple/nginx/sites-available/default.rpi /etc/nginx/sites-available/default
sudo systemctl restart nginx

cd ~/qewd
pm2 start ripple-rpi.js

echo "----------------------------------------------------------------------------------"
echo " The set up of the QEWD Ripple Middle Tier on your Raspberry Pi is now complete!  "
echo "  The Startup template file (ripple-rpi.js) is in the ~/qewd directory.           "
echo "                                                                                  "
echo "  ripple-rpi has been started in PM2 for you and should be ready for use          "
echo "                                                                                  "
echo " Just point your browser at your RPi's IP address, eg http://192.168.1.100        "
echo "  to start RippleOSI                                                              "
echo "----------------------------------------------------------------------------------"