#!/bin/sh

# https://github.com/gotthardp/lorawan-server/blob/master/doc/Installation.md

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

DIRECTORYTMPBACKUP="/opt/GoIoT/tmpcompactlorawanserverbackup"
if [ ! -d "$DIRECTORYTMPBACKUP" ]; then
    mkdir /opt/GoIoT/tmpcompactlorawanserverbackup
    sudo chmod 0755 /opt/GoIoT/tmpcompactlorawanserverbackup
fi

FILE="/usr/lib/lorawan-server/bin/lorawan-server"
if [ -f "$FILE" ]; then
    echo "SERVER IS ALREADY INSTALLED !"
    #exit 0
else
    # Special Debian Buster case.
    version=$(cat /etc/os-release | grep VERSION_ID= | cut -d'"' -f2) 
    if [ "$version" -eq "10" ]; then
        echo "Installing the Erlang/OTP 21.0 or later..."
        cd ~
        wget https://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb
        sudo dpkg -i erlang-solutions_1.0_all.deb
    fi
    echo "Install dependencies..."
    cd ~
    sudo apt-get update
    sudo apt-get -y install apt-transport-https
    sudo apt-get -y install erlang-base erlang-crypto erlang-syntax-tools erlang-inets \
      erlang-mnesia erlang-runtime-tools erlang-ssl erlang-public-key erlang-asn1 \
      erlang-os-mon erlang-snmp erlang-xmerl

    echo "Install lorawan-server..."
    wget https://github.com/gotthardp/lorawan-server/releases/download/v0.6.7/lorawan-server_0.6.7_all.deb
    sudo dpkg -i lorawan-server_0.6.7_all.deb
    sudo systemctl enable lorawan-server
    cd /opt/GoIoT/tmpcompactlorawanserverbackup
    wget http://apps.control2net.com/apt/lorawan/Erlang/sys.txt
    cp sys.txt /usr/lib/lorawan-server/releases/0.6.7/sys.config

    # THIS SHOULD ALSO BE INSTALLED FOR BUSTER
    #if [ "$version" -eq "9" ]; then
        echo "Installing the Erlang/OTP 24.0..."
        cd /opt/GoIoT/tmpcompactlorawanserverbackup
        wget http://apps.control2net.com/apt/lorawan/Erlang/erlang24.tar.gz
        sudo tar -xzf erlang24.tar.gz -C /opt
        sudo ln -sfn /opt/erlang/24/bin/ct_run /usr/local/bin/
        sudo ln -sfn /opt/erlang/24/bin/dialyzer /usr/local/bin/
        sudo ln -sfn /opt/erlang/24/bin/epmd /usr/local/bin/
        sudo ln -sfn /opt/erlang/24/bin/erl /usr/local/bin/
        sudo ln -sfn /opt/erlang/24/bin/erlc /usr/local/bin/
        sudo ln -sfn /opt/erlang/24/bin/escript /usr/local/bin/
        sudo ln -sfn /opt/erlang/24/bin/run_erl /usr/local/bin/
        sudo ln -sfn /opt/erlang/24/bin/to_erl /usr/local/bin/
        sudo ln -sfn /opt/erlang/24/bin/typer /usr/local/bin/
    #fi
    #sudo systemctl start lorawan-server
    echo "Finished."
fi

echo "Take backup..."
DIRECTORYBACKUP="/opt/GoIoT/backup"
if [ ! -d "$DIRECTORYBACKUP" ]; then
    mkdir /opt/GoIoT/backup
    sudo chmod 0755 /opt/GoIoT/backup
fi
cp -p /usr/lib/lorawan-server/releases/0.6.7/sys.config /opt/GoIoT/backup/lorawan_compact_sys.config.`date +%Y%m%d%H%M%S`

echo "Install any new decoders (internal applications)..."
sudo systemctl stop lorawan-server

cd /opt/GoIoT/tmpcompactlorawanserverbackup
wget http://apps.control2net.com/apt/lorawan/Erlang/internal-applications.txt
wget -i internal-applications.txt
cp *.beam /usr/lib/lorawan-server/lib/lorawan_server-0.6.7/ebin/
wget http://apps.control2net.com/apt/lorawan/Erlang/sys-addon.txt
lines=$(cat /opt/GoIoT/tmpcompactlorawanserverbackup/sys-addon.txt)
lines=`echo ${lines} | tr '\n' "\\n"`
if grep -q "applications," /usr/lib/lorawan-server/releases/0.6.7/sys.config; then
    #sed -i "/{applications,/,/]},/c$lines" /usr/lib/lorawan-server/releases/0.6.7/sys.config
    sed -i "/{applications/c$lines" /usr/lib/lorawan-server/releases/0.6.7/sys.config
else
    #sed -i '/^\s*{lorawan_server/r sys-addon.txt' /usr/lib/lorawan-server/releases/0.6.7/sys.config
    sed -i "/{lorawan_server/a$lines" /usr/lib/lorawan-server/releases/0.6.7/sys.config
fi
DIRECTORYTMPBACKUP="/opt/GoIoT/tmpcompactlorawanserverbackup"
if [ -d "$DIRECTORYTMPBACKUP" ]; then
    sudo rm -r /opt/GoIoT/tmpcompactlorawanserverbackup
fi
echo "Starting lorawan-server service..."
sudo systemctl start lorawan-server
echo "Finished."

echo "Use these commands to control the service:"
echo " sudo systemctl status lorawan-server   (show service status)"
echo " sudo systemctl start lorawan-server    (start the service)"
echo " sudo systemctl stop lorawan-server     (stop the service)"
echo " sudo systemctl restart lorawan-server  (restart the service)"
echo " sudo systemctl enable lorawan-server   (service starts after reboot)"
echo " sudo systemctl disable lorawan-server  (service does not start after reboot)"
echo " /usr/lib/lorawan-server/bin/lorawan-server      (start server directly, not as service)"
echo " journalctl -f -u lorawan-server.service         (show service log)"
echo " sudo tail -f /var/log/lorawan-server/debug.log  (show application log)"
echo " Web-administration: http://localhost:8080       (Default credentials admin, admin)"