#!/bin/sh

# To run from Internet: 
#     sudo sh -c "$(curl -s https://apps.control2net.com/apt/install-dingo-lorawan-server)"

DIRECTORYBACKUP="/home/pi/goiot-backups"
DIRECTORYBACKUP_OLD="/opt/GoIoT/backup"
DIRECTORYTMP="/home/pi/download"
FILENAME=$DIRECTORYBACKUP"/lns-db-and-config-"`date +%y%m%d_%H%M%S`.tar.gz
FILE="/opt/dingo-lorawan-server/dingo-lorawan-server.js"

echo "Check Node.js environment..."
nodejs=$(nodejs --version 2>&1 | grep v)
if [ -z "$nodejs" ]; then
    #echo "Install Node.js first. Instructions:"
    #echo "    sudo su"
    #echo "    curl -fsSL https://deb.nodesource.com/setup_16.x | bash -"
    #echo "    apt-get install -y nodejs"
    echo "Install Node.js 16.x..."
    sudo curl -fsSL https://deb.nodesource.com/setup_16.x | bash -
    sudo apt-get install -y nodejs
else
    nv=$(echo $nodejs | tr -d "v" | tr -d ".")
    if [ "$nv" -lt "16150" ]; then
        echo "Install Node.js 16.x"
        sudo curl -fsSL https://deb.nodesource.com/setup_16.x | bash -
        sudo apt-get install -y nodejs
    fi
fi
echo "\e[32mNode.js environment is ready\e[0m"
echo

# Create working folder if not exist
if [ ! -d "$DIRECTORYTMP" ]; then
	mkdir $DIRECTORYTMP
	chmod 0755 $DIRECTORYTMP
fi

if [ -f "$FILE" ]; then
    echo "DINGO LORAWAN SERVER IS ALREADY INSTALLED."
    echo "Doing upgrade..."
    echo "Stop LNS service..."
    sudo systemctl stop dingo-lorawan-server.service
    echo "e[32mLNS service stopped successfully\e[0m"

	# To have the database for sure closed, run this SQL
	sudo sqlite3 /opt/dingo-lorawan-server/db/dingo-lorawan-server.db 'SELECT * FROM db_revision;'	
	
    if [ $(ls /opt/dingo-lorawan-server/db/dingo-lorawan-server.db-* 2>/dev/null | wc -l) -gt 0 ]; then
        echo "\033[0;31mDATABASE IS OPEN!!"
        echo "Can not take databse backup because"
        echo "a temporary database file(s) exist."
        echo "Can not continue with install!!\033[0m"
        exit
    fi

    echo "Uninstall obsolete modules..."
    cd /opt/dingo-lorawan-server
    sudo npm uninstall @goiot/goiot
	echo "\e[32mObsolete modules uninstalled\e[0m"
	echo

	echo "Copy database and config file to temp folder $DIRECTORYTMP""..."
    sudo cp -p /opt/dingo-lorawan-server/server.json $DIRECTORYTMP
    sudo cp -p /opt/dingo-lorawan-server/db/dingo-lorawan-server.db $DIRECTORYTMP
	echo "\e[32mDone copying server.json and dingo-lorawan-server.db to folder"
	echo "$DIRECTORYTMP to be later restored\e[0m"
	echo
	
	echo "Backup to folder $DIRECTORYBACKUP""..."
	if [ ! -d "$DIRECTORYBACKUP" ]; then
		mkdir $DIRECTORYBACKUP
		chmod 0755 $DIRECTORYBACKUP
	fi
    #cp -p /opt/dingo-lorawan-server/server.json $DIRECTORYBACKUP/server.json.`date +%Y%m%d%H%M%S`
    #cp -p /opt/dingo-lorawan-server/db/dingo-lorawan-server.db /opt/GoIoT/backup/dingo-lorawan-server.db.`date +%Y%m%d%H%M%S`
	# Instead compress to a .tar.gz file
	sudo tar -czf $FILENAME \
		 -C /opt/dingo-lorawan-server server.json \
		 -C /opt/dingo-lorawan-server/db dingo-lorawan-server.db
	if [ $? -eq 0 ]; then
		echo "\e[32mBackup successfull to $FILENAME""\e[0m"
	else
		echo "\033[0;31mBackup failed, patch upgrade will exit!!\033[0m"
		exit
	fi
	echo

    echo "Upgrade DINGO LoRaWAN Server..."
    cd $DIRECTORYTMP
    wget https://apps.control2net.com/apt/lorawan/dingo-lorawan-server-1.0.0.zip
    sudo unzip -o -q dingo-lorawan-server-1.0.0.zip -d /opt

    echo "  Return the files that were backed-up..."
    sudo cp -p "$DIRECTORYTMP/server.json" /opt/dingo-lorawan-server/
    sudo cp -p "$DIRECTORYTMP/dingo-lorawan-server.db" /opt/dingo-lorawan-server/db/
    echo "    Backed-up files restored successfully"

    # 250607 ÞJ: Removed as now the whole node_module folder is copied from the development machine as the latest valid & tested
    # echo "Install modules..."
    # cd /opt/dingo-lorawan-server
    # npm install node-machine-id
    # npm install enum
    # npm install neo-blessed
    # npm install blessed
    # npm install blessed-contrib
    # npm i --save gps-time
    # npm install json-multi-parse

    echo "  Restart DINGO-Stack will take care of LoRaWAN Server db-updates if any..."
    sudo systemctl restart dingo.service
    echo "    DINGO-Stack will restarted. Check for any SQL errors in /opt/GoIoT/DinGo/dingo.log"

    # 221220 TJ, Commented out. LoraWan server has to be manually restarted
    # This is done to be sure all DB-updates from the command above are finished
    #echo "Start service..."
    #sudo systemctl restart dingo-lorawan-server.service

else
    echo "Installing DINGO LoRaWAN Server..."
    cd $DIRECTORYTMP
    wget https://apps.control2net.com/apt/lorawan/dingo-lorawan-server-1.0.0.zip
    sudo unzip -q dingo-lorawan-server-1.0.0.zip -d /opt

    echo "  Setup service..."
    cd /opt/dingo-lorawan-server/systemd
    sudo cp -p dingo-lorawan-server.service /lib/systemd/system
    sudo systemctl daemon-reload
    echo "  Service setup finished"

    echo "Start service...."
    sudo systemctl enable dingo-lorawan-server.service
    sudo systemctl restart dingo-lorawan-server.service

    echo "Delete obsolete stuff"
    rm -r /opt/dingo-lorawan-server/node_modules/@goiot/
fi

echo "  Delete old obfusucated files on wrong location by Danjal..."
sudo rm /opt/dingo-lorawan-server/dev-time.js
sudo rm /opt/dingo-lorawan-server/dev-status.js
sudo rm /opt/dingo-lorawan-server/end-device_trans_params.js
sudo rm /opt/dingo-lorawan-server/link-check.js
sudo rm /opt/dingo-lorawan-server/link-adr.js
sudo rm /opt/dingo-lorawan-server/service_adr.js
sudo rm /opt/dingo-lorawan-server/WorkStuff.js
sudo rm /opt/dingo-lorawan-server/downlinks.js
sudo rm /opt/dingo-lorawan-server/downlink.js
sudo rm /opt/dingo-lorawan-server/entity.js
sudo rm /opt/dingo-lorawan-server/get_uid.js
sudo rm -r /opt/dingo-lorawan-server/node_modules/@goiot/
echo "    Old obfusucated files deleted"

echo "  Clean up..."
rm dingo-lorawan-server-1.0.0.zip
sudo rm server.json
sudo rm dingo-lorawan-server.db
echo "    Clean up finished"


sudo grep -q -F 'LORAWAN_SERVER_DB=' /etc/profile.d/dingo.sh || sudo sed -i -e '$i \# Refers to the DINGO LORAWAN SERVER Database location.\nexport LORAWAN_SERVER_DB="/opt/dingo-lorawan-server/db/"\n' /etc/profile.d/dingo.sh
sudo grep -q -F 'LORAWAN_SERVER_HOME=' /etc/profile.d/dingo.sh || sudo sed -i -e '$i \# Refers to the DINGO LORAWAN SERVER home directory.\nexport LORAWAN_SERVER_HOME="/opt/dingo-lorawan-server/"\n' /etc/profile.d/dingo.sh
sudo grep -q -F 'LORAWAN_SERVER_SERVICE=' /etc/profile.d/dingo.sh || sudo sed -i -e '$i \# Refers to the service that controls the DINGO LORAWAN SERVER\nexport LORAWAN_SERVER_SERVICE="dingo-lorawan-server.service"\n' /etc/profile.d/dingo.sh

echo "\e[32mFINISHED\e[0m"
echo

echo "Use these commands to control the service:"
echo " sudo systemctl status dingo-lorawan-server.service   (show service status)"
echo " sudo systemctl start dingo-lorawan-server.service    (start the service)"
echo " sudo systemctl stop dingo-lorawan-server.service     (stop the service)"
echo " sudo systemctl restart dingo-lorawan-server.service  (restart the service)"
echo " sudo systemctl enable dingo-lorawan-server.service   (service starts after reboot)"
echo " sudo systemctl disable dingo-lorawan-server.service  (service does not start after reboot)"
echo " cd /opt/dingo-lorawan-server && sudo node dingo-lorawan-server.js     (start server directly, not as service)"
echo " journalctl -f -u dingo-lorawan-server.service                         (show service log)"
echo