#!/usr/bin/env bash

# The Raspberry Pi doesn't contain a real hardware clock, so the time is lost on
# reboots. This updates the Raspberry Pi fake Hardware Clock so that it matches
# the meter time, and will be set to this value on reboot. This helps when there
# is no network connection
#
# Released under MIT license. See the accompanying LICENSE.txt file for
# full terms and conditions
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

source $(dirname $0)/oref0-bash-common-functions.sh || (echo "ERROR: Failed to run oref0-bash-common-functions.sh. Is oref0 correctly installed?"; exit 1)


PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

CLOCK=${1-monitor/clock-zoned.json}
GLUCOSE=${2-monitor/glucose.json}
PUMP=${3-pump}
CGM=${4-cgm}

usage "$@" <<EOF
Usage: $self
Set pump and CGM clocks based on NTP time if available.
EOF


checkNTP() { ntp-wait -n 1 -v || ( sudo /etc/init.d/ntp restart && ntp-wait -n 1 -v ) }

if checkNTP; then
    sudo ntpdate -s -b time.nist.gov
    echo Setting pump time to $(date)
    mdt -f internal setclock now 2>&1 >/dev/null
    if hash g4setclock 2>/dev/null; then
        echo Setting G4 CGM time to $(date) with g4setclock
        g4setclock now
    fi
    #TODO: deprecate openaps toolkit based CGM setups
    # xdripaps CGM does not have a clock to set, so don't try. 
    # suppress cgm update if mdt is configured, since it is same clock as pump
    if [ ! -d xdrip ] && [ "$(get_pref_string .cgm '')" != "mdt" ]; then
        echo Setting CGM time to $(date) with openaps use $CGM UpdateTime --to now
        openaps use $CGM UpdateTime --to now 2>&1 >/dev/null | tail -1
    fi
fi