#!/usr/bin/env bash

set -e

OZW_LIB=$(dirname $(find "${SNAP}/usr/local" -name libopenzwave.so -print -quit))
export LD_LIBRARY_PATH="${OZW_LIB}:${LD_LIBRARY_PATH}"

function lprint {
    echo ${1}
    logger "${SNAP_NAME}: ${1}"
}
if ! snapctl is-connected raw-usb; then
    lprint "Please connect raw-usb interface!"
    lprint "Run: snap connect ${SNAP_NAME}:raw-usb"
    exit 1
fi

USB_PATH=$(snapctl get usb-path)
STOP_ON_FAILURE=$(snapctl get stop-on-failure)

MQTT_SERVER=$(snapctl get mqtt.server)
MQTT_PORT=$(snapctl get mqtt.port) 
MQTT_USERNAME=$(snapctl get mqtt.username)
export MQTT_PASSWORD=$(snapctl get mqtt.password)
MQTT_TLS=$(snapctl get mqtt.tls)

OZW_INSTANCE=$(snapctl get ozw.instance)
export OZW_NETWORK_KEY=$(snapctl get ozw.network-key)
OZW_CONFIG_DIR=$(snapctl get ozw.config-dir)
OZW_USER_DIR=$(snapctl get ozw.user-dir)
export OZW_AUTH_KEY=$(snapctl get ozw.auth-key)

if [ ! -c "${USB_PATH}" ]; then 
    lprint "usb-path (${USB_PATH}) does not exist,"
    lprint "or is not a Character Device"
    lprint "See: snap get ${SNAP_NAME} -d usb-path"
    exit 1
fi
OZW_ARGS+=(--serial-port "${USB_PATH}")

if [ ${STOP_ON_FAILURE} == true ]; then
    OZW_ARGS+=(--stop-on-failure)
elif [ ${STOP_ON_FAILURE} != false ]; then
    lprint "Invalid value for stop-on-failure (${STOP_ON_FAILURE})"
    lprint "See: snap get ${SNAP_NAME} -d stop-on-failure"
    exit 1
fi

OZW_ARGS+=(--mqtt-server "${MQTT_SERVER}")
OZW_ARGS+=(--mqtt-port "${MQTT_PORT}")

if [ ${MQTT_TLS} != false ]; then
    OZW_ARGS+=(--mqtt-username "${MQTT_USERNAME}")
fi

if [ ${MQTT_TLS} == true ]; then
    OZW_ARGS+=(--mqtt-tls)
elif [ ${MQTT_TLS} != false ]; then
    lprint "Invalid value for mqtt.tls (${MQTT_TLS})"
    lprint "See: snap get ${SNAP_NAME} -d mqtt"
    exit 1
fi

OZW_ARGS+=(--mqtt-instance "${OZW_INSTANCE}")

if [ ! -d "${OZW_CONFIG_DIR}" ] || [ ! -w "${OZW_CONFIG_DIR}" ]; then
    lprint "Directory: ${OZW_CONFIG_DIR}"
    lprint "- Does not exist or not writable."
    exit 125
fi

OZW_ARGS+=(--config-dir "${OZW_CONFIG_DIR}")

if [ ! -d "${OZW_USER_DIR}" ] || [ ! -w "${OZW_USER_DIR}" ]; then
    lprint "Directory: ${OZW_USER_DIR}"
    lprint "- Does not exist or not writable."
    exit 126
fi

OZW_ARGS+=(--user-dir "${OZW_USER_DIR}")

# if ! timeout "${MQTT_CONNECT_TIMEOUT:=30}" \
#     bash -c "until echo /dev/tcp/${MQTT_SERVER}/${MQTT_PORT}; do sleep 1; done" &>/dev/null
# then
#     lprint "Could not connect to the MQTT broker after ${MQTT_CONNECT_TIMEOUT} seconds"
#     exit 124
# fi

set -- "$@" "${OZW_ARGS[@]}"

lprint "Env. variables"
lprint $(printenv | grep "OZW_")
lprint $(printenv | grep "MQTT_")
# ARGC=$#
# ARGV=("$@")
#
lprint "Exec: $@"
# echo "Arguments: "
# for ((i = 0; i < ${ARGC}; i++)); do
#     echo "${ARGV[$i]}"
# done

exec "$@"