#!/bin/sh

# Data here https://docs.miromico.ch/gateways-cards/miro-edgecard/
# Gitlab here https://gitlab.com/fmlr/miro_edge/sx1302_hal
# https://docs.miromico.ch/gateways-cards/miro-edgecard/integration/

# To run from Internet: 
#     sudo sh -c "$(curl -s https://apps.control2net.com/apt/install-miromico-pico-packet-forwarder)"

_UPGRADING=0
_DIR_INSTALL="/opt/miromico/sx1302_hal-master/packet_forwarder"
_LOCAL_CONF_EXIST=0
_GLOBAL_CONF_EXIST=0 # 0: Not Exist, 1: Exist as file, 2: Exist as soft-link.

# clear screen
tput clear

echo ""

# Check if we are upgrading or installing a clean install
_FILE="$_DIR_INSTALL/lora_pkt_fwd"
if [ -f "$_FILE" ]; then
    #
    # Upgrade is going to be done
    # Take backup of config files if upgrading
    #

    _UPGRADING=1

    echo "\e[1;36m-------------------------------------------------------"
    echo "| MIROMICO PICO PACKET FORWARDER IS ALREADY INSTALLED |"
    echo "|            UPGRADING WILL BE PERFORMED!             |"
    echo "-------------------------------------------------------\e[0m"
    echo ""
    
    echo "\e[1;33mTAKE BACKUP"
    echo "==========================================================\e[0m"

    #
    # Prepare backup folder for all configuration files that apply
    #
    _DIR="$HOME/miromico_cfg_backup"
    if [ ! -d "$_DIR" ]; then
        mkdir $_DIR
        # sudo chmod 0755 /opt/miromico
        echo " * Backup folder for configuration files created at '$_DIR'."
    else
        echo " * Backup folder '$_DIR' for configuration files already exist."
    fi
    echo ""

    #
    # Take backup of all configuration files
    #
    _FILE="$_DIR_INSTALL/local_conf.json"
    if [ -f "$_FILE" ]; then
        _LOCAL_CONF_EXIST=1
        sudo cp $_FILE $_DIR
        echo " * '$_FILE'"
        echo "    is backed up."
    else
        echo " * '$_FILE'"
        echo "   does not exist, no backup taken."
    fi
    echo ""

    _FILE="$_DIR_INSTALL/global_conf.json"
    if [ -L "$_FILE" ]; then
        _GLOBAL_CONF_EXIST=2
        sudo cp -a $_FILE $_DIR
        echo " * '$_FILE'"
        echo "   is a symlink. Link only backed up."
    elif [ -f "$_FILE" ]; then
        _GLOBAL_CONF_EXIST=1
        sudo cp $_FILE $_DIR
        echo " * '$_FILE'"
        echo "   is backed up."
    else
        echo " * '$_FILE'"
        echo "   does not exist, no backup taken."
    fi
    echo ""

    _FILE="$_DIR_INSTALL/cfg"
    if [ -d "$_FILE" ]; then
        sudo cp -r $_FILE $_DIR
        echo " * Subfolder 'cfg' is backed up."
    else
        echo " * Subfolder 'cfg' does not exist, no backup taken"
    fi
    echo ""
    
    #
    # Stop the Packet Forwarder if running
    # I decided to comment out the below two lines because of possible reboot in old shit!
    #echo "Stopping Packet Forwarder..."
    #sudo systemctl stop miromico-pico-packet-forwarder.service
    echo "BACKUP COMPLEATE"
    echo "UPGRADING WILL NOW START after 3sec..."
    sleep 3
else
    echo "\e[1;36m---------------------------------------------------"
    echo "| MIROMICO PICO PACKET FORWARDER IS NOT INSTALLED |"
    echo "|         CLEAN INSTALL WILL BE PERFORMED!        |"
    echo "---------------------------------------------------\e[0m"
fi

echo ""
echo "\e[1;33mDOWNLOAD AND INSTALL"
echo "==========================================================\e[0m"
    
#
# Make temporary folder for the install
#
_DIR_TEMP="$HOME/tmp_miromico_install"
if [ ! -d "$_DIR_TEMP" ]; then
    mkdir $_DIR_TEMP
    sudo chmod 0755 $_DIR_TEMP
    echo " * Temporary folder while installing created at '$_DIR_TEMP'."
else
    echo " * Temporary folder '$_DIR_TEMP' for installation files already exist."
    echo " * Any existing files will be overwritten."
fi
echo ""

#
# Create install folder if needed.
#
_DIR_OPT_MIROMICO="/opt/miromico"
if [ ! -d "$_DIR_OPT_MIROMICO" ]; then
    sudo mkdir $_DIR_OPT_MIROMICO
    sudo chmod 0755 $_DIR_OPT_MIROMICO
    echo " * Install folder '$_DIR_OPT_MIROMICO' created."
else
    echo " * Install folder '$_DIR_OPT_MIROMICO' already exist."
fi
echo ""

#
# Get the compressed tar file for installation from apps.go-iot.io and uncompress it
#
echo " * Downloading install file from Go-IoT web site to"
echo "   '$_DIR_TEMP'..."
echo "\e[1;35m----------------- BEGIN -----------------"
cd $_DIR_TEMP
wget https://apps.control2net.com/apt/lorawan/miromico-pico-packet-forwarder.tar.gz
echo "------------------ END ------------------\e[0m"
echo ""

echo " * Uncompressing downloaded install file to"
echo "   '$_DIR_OPT_MIROMICO'..."
sudo tar -xzf miromico-pico-packet-forwarder.tar.gz -C $_DIR_OPT_MIROMICO
echo ""

if [ $_UPGRADING -gt 0 ]; then
    #
    # Restore backed up config files:
    #   global_conf.json
    #   local_conf.json
    # if previously backed up.
    #
    # If there where not local_conf.json originally then remove the one.
    # copied in with the install.
    #
    # The config backup will be left in user home folder if needed for disaster restore.
    #
    
    echo "RESTORING CONFIGURATION FILES"
    if [ $_LOCAL_CONF_EXIST -gt 0 ]; then
        echo " * Restoring 'local_conf.json'."
        sudo cp $_DIR/local_conf.json $_DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/
    else
        sudo rm $_DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/local_conf.json
    fi

    if [ $_GLOBAL_CONF_EXIST -eq 1 ]; then
        echo " * Restoring 'global_conf.json' file."
        sudo rm _DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/global_conf.json
        sudo cp $_DIR/global_conf.json $_DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/
    elif [ $_GLOBAL_CONF_EXIST -eq 2 ]; then
        echo " * Restoring 'global_conf.json' symlink."
        # sudo rm _DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/global_conf.json
        sudo cp -a $_DIR/global_conf.json $_DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/
    else
        echo " * There was no global_conf.json, default symlink will point to EU868 MHz, 8 channnel config file."
        echo "   Change this symlink if needed to a different region config file in subfolder 'cfg/'"
    fi  
fi
echo ""

echo " * Removing '$_DIR_TEMP'"
cd $HOME
sudo rm -r $_DIR_TEMP
echo ""

#
# Configuring
#
echo "\e[1;33mCONFIGURING..."
echo "==========================================================\e[0m"
echo " * Setting up the packet-forwarder as systemd service."
#echo "----------------- BEGIN -----------------"
cd $_DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/systemd
sudo cp -p miromico-pico-packet-forwarder.service /lib/systemd/system
sudo systemctl daemon-reload
#echo "------------------ END ------------------"
echo ""

if [ $_UPGRADING -eq 0 ]; then
    echo " * Enabling externa antenna as the default antenna..."
    echo "\e[1;35m----------------- BEGIN -----------------"
    sudo $_DIR_OPT_MIROMICO/sx1302_hal-master/util_ant_sel/ant_sel -d /dev/ttyACM0 -a 1
    echo "------------------ END ------------------\e[0m"
    echo ""
    echo " * Set unique ID for packet-forwarder in local_conf.json from eth0 MAC address..."
    echo "\e[1;35m----------------- BEGIN -----------------"
    sudo $_DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/update_gwid_from_eth0_mac.sh $_DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/local_conf.json
    echo "------------------ END ------------------\e[0m"
    echo ""
    echo " * The 'global_conf.json', defaults to be a copy from 'global_conf.json.sx1250.EU868.USB', "
	echo "   a 8 channnel config file."
    echo "   If that is not correct, copy any of the other 'global_conf.json.sx125....' to file"
    echo "   'global_conf.json'"
else
    echo " * Antenna settings left as was before upgrade."
	echo "   To set to external antenna run this command:"
	echo "   sudo /opt/miromico/sx1302_hal-master/util_ant_sel/ant_sel -d /dev/ttyACM0 -a 1"
	echo "   For further details refer to 'Anetnna Selection' section in:"
	echo "   https://docs.miromico.ch/gateways-cards/miro-edgecard/integration/"
fi
echo ""

#
# Enabling and starting/restarting the packet-forwarder as a service
#
echo "\e[1;33mENABLING & STARTING THE PACKET-FORWARDER SERVICE...."
echo "==========================================================\e[0m"
if [ $_UPGRADING -eq 0 ]; then
    echo " * Packet Forwarder service enabled such that it will autostart at each reboot"
    sudo systemctl enable miromico-pico-packet-forwarder.service
    echo ""
    echo " * Please configure properly the forward-to 'server_address'"
    echo "   properties in file 'local_conf.json' before starting the packet forwarder service."
    echo "   'The same file; local_conf.json' contains details of how to do that."
    echo ""
    echo "   If not done before, we strongly recommend you read content in files"
    echo "   'how_to_use.README' and global_conf.json.README'".
    echo ""
    echo "   NOTE: If DINGO-manager refers to 'global_conf.json' please read about how to"
    echo "         change that to local_conf.json in file 'how_to_use.README'"
else
    echo " * Packet Forwarder 'enabled' configuration left as was before upgrade."
    echo ""
    echo " * Stopping Packet Forwarder service if currently running after 3 seconds..."
    echo "   NOTE! If the previous version is so old that it had to reboot to restart"
    echo "         the box will now reboot after 5 seconds."
    echo "         REMEMBER: If this installation is on hardware still with this problem"
    echo "                   Then please add this configuration line into your global_conf.json"
    echo "                   or local_conf.json file:"
    echo "                   "reboot_at_shutdown": false"
    echo "                   You can find a template for this in subfolder file:"
    echo "                   cfg/local_conf.json"
    sleep 3
    sudo systemctl stop miromico-pico-packet-forwarder.service
    echo ""
    echo " * Starting Packet Forwarder service after 5 seconds..."
    sleep 5
    sudo systemctl start miromico-pico-packet-forwarder.service
fi
echo ""

echo "\e[1;33mFINISHED"
echo "==========================================================\e[0m"
echo ""
cd $_DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder

#echo "Use thOSE commands to control the service:"
#echo " sudo systemctl status miromico-pico-packet-forwarder.service   (show service status)"
#echo " sudo systemctl start miromico-pico-packet-forwarder.service    (start the service)"
#echo " sudo systemctl stop miromico-pico-packet-forwarder.service     (stop the service)"
#echo " sudo systemctl restart miromico-pico-packet-forwarder.service  (restart the service)"
#echo " sudo systemctl enable miromico-pico-packet-forwarder.service   (service starts after reboot)"
#echo " sudo systemctl disable miromico-pico-packet-forwarder.service  (service does not start after reboot)"
#echo " $_DIR_OPT_MIROMICO/sx1302_hal-master/packet_forwarder/lora_pkt_fwd    (start server directly, not as service)"
#echo " journalctl -f -u miromico-pico-packet-forwarder.service                        (show service log)"