#!/bin/bash


NAME="lora-basic-station"
ENABLED="yes"


[ -f /etc/default/$NAME ] && source /etc/default/$NAME

run_dir=/var/run/lora
opt_conf_dir=/opt/lora
conf_dir=/var/config/lora
conf_file=$conf_dir/station.conf
tc_uri_file=$conf_dir/tc.uri
tc_key_file=$conf_dir/tc.key
tc_trust_file=$conf_dir/tc.trust

pkt_fwd=$run_dir/1/station
pkt_fwd_pidfile=$run_dir/station.pid

port1=/sys/devices/platform/mts-io/ap1
port2=/sys/devices/platform/mts-io/ap2

lora_mtac_id="MTAC-LORA"
lora_1_0_hw="MTAC-LORA-1.0"
lora_1_5_h_hw="MTAC-LORA-1.5"
lora_2_1_hw="MTAC-LORA-2.1"

lora_mtac_id="MTAC-LORA"
lora_mtac_id915="MTAC-LORA-915"
lora_mtac_id868="MTAC-LORA-868"
lora_mtac_h_id915="MTAC-LORA-H-915"
lora_mtac_h_id868="MTAC-LORA-H-868"

lora_mtcap_id="MTCAP-LORA"
lora_mtcap_id868="MTCAP-LORA-868"
lora_mtcap_id915="MTCAP-LORA-915"

lora_mtac_g_id="MTAC-LORA-G"
lora_mtac_g16_id868="MTAC-LORA-G16-868"
lora_mtac_g16_id915="MTAC-LORA-G16-915"
lora_mtac_g64_id868="MTAC-LORA-G64-868"
lora_mtac_g64_id915="MTAC-LORA-G64-915"

pkt_fwd_options=""

gps_path="/dev/gps0"

read_lora_hw_info() {
    lora_id=$(mts-io-sysfs show lora/product-id 2> /dev/null)
    lora_hw=$(mts-io-sysfs show lora/hw-version 2> /dev/null)
    lora_eui=$(mts-io-sysfs show lora/eui 2> /dev/null)
    lora_eui_raw=${lora_eui//:/}
}

hardware_found() {
    if [[ "$lora_id" =~ "$lora_mtac_g_id" ]]; then
        setup_mtcdt_2_1
    elif [[ "$lora_id" =~ "$lora_mtcap_id" ]]; then
        setup_mtcap
    elif [[ "$lora_id" =~ "$lora_mtac_id" ]]; then
        setup_mtcdt
    else
        return 1
    fi
    return 0
}

setup_mtcdt() {
    ln -sf /opt/lora/station $pkt_fwd
}

setup_mtcap() {
    ln -sf /opt/lora/station $pkt_fwd
}

setup_mtcdt_2_1() {
    echo LORA-2.1 not supported
    return 1
}

do_start() {

    mkdir -p $run_dir/1
    rm -rf $run_dir/1/*

    read_lora_hw_info

    if hardware_found; then
        echo "Found $lora_id with $lora_hw hardware. Configuring"
    else
        echo "$0: LORA card not detected"
        exit 1
    fi

    if ! [ -f $conf_file ]; then
        echo "$0: $conf_file missing"
        exit 1
    fi

    #
    # copy conf files to the run directory
    #
    cp $conf_file $run_dir/1/
    cp $tc_uri_file $run_dir/1/
    cp $tc_key_file $run_dir/1/
    cp $tc_trust_file $run_dir/1/

    sed -i.bak "s/\(.*routerid\"\s*\:\s*\"\)<.*>[^\"]*\(.*\)/\1${lora_eui_raw}\2/g" /var/run/lora/1/station.conf

    #
    # start packet forwarder
    #
    echo -n "Starting $NAME: "

    /usr/sbin/start-stop-daemon --chdir $run_dir/1 --background --start --make-pidfile \
        --pidfile $pkt_fwd_pidfile --startas /bin/bash -- -c "exec $pkt_fwd $pkt_fwd_options"

    renice -n -20 -p $(pgrep $(basename $pkt_fwd))

    echo "OK"
}


do_stop() {
    echo -n "Stopping $NAME: "
    start-stop-daemon --stop --quiet --oknodo --pidfile $pkt_fwd_pidfile --retry 5
    rm -f $pkt_fwd_pidfile
    echo "OK"
}


if [ "$ENABLED" != "yes" ]; then
    echo "$NAME: disabled in /etc/default"
    exit
fi


case "$1" in
    "start")
    do_start
        ;;
    "stop")
    do_stop
        ;;
    "restart")
        ## Stop the service and regardless of whether it was
        ## running or not, start it again.
        do_stop
        do_start
        ;;
    *)
        ## If no parameters are given, print which are avaiable.
        echo "Usage: $0 {start|stop|restart}"
        exit 1
    ;;
esac