#!/usr/bin/env bash

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

# OREF0_DEBUG makes this script much more verbose
# and allows it to print additional debug information.
# OREF0_DEBUG=1 generally means to print everything that usually
# goes to stderr. (It will will include stack traces in case
# of errors or exceptions in sub commands)
# OREF0_DEBUG=2 is for debugging only. It will print all commands
# being executed as well as all their output, (use with care as it
# might overflow your log files)
# The default value is 0. A silent mode could also be implemented, but
# it hasn't been done at this point.
# Note: for future changes:
# -  when subcommand outputs are not needed in the main log file:
#    - redirect the output to either fd >&3 or fd >&4 based on
#    - when you want the output visible.
export MEDTRONIC_PUMP_ID=`get_pref_string .pump_serial | tr -cd 0-9`
export MEDTRONIC_FREQUENCY=`cat monitor/medtronic_frequency.ini`
OREF0_DEBUG=${OREF0_DEBUG:-0}
if [[ "$OREF0_DEBUG" -ge 1 ]] ; then
  exec 3>&1
else
  exec 3>/dev/null
fi
if [[ "$OREF0_DEBUG" -ge 2 ]] ; then
  exec 4>&1
  set -x
else
  exec 4>/dev/null
fi

usage "$@" <<EOT
Usage: $self
The main pump loop. Syncs with an insulin pump, enacts temporary basals and
SMB boluses. Normally runs from crontab.
EOT

# main pump-loop
main() {
    check_duty_cycle
    prep
    if ! overtemp; then
        echo && echo "Starting oref0-pump-loop at $(date) with $upto30s second wait_for_silence:"
        try_fail wait_for_bg
        try_fail wait_for_silence $upto30s
        retry_fail preflight
        try_fail if_mdt_get_bg
        # try_fail refresh_old_pumphistory
        try_fail refresh_old_profile
        try_fail touch /tmp/pump_loop_enacted -r monitor/glucose.json
        if retry_fail smb_check_everything; then
            if ( grep -q '"units":' enact/smb-suggested.json 2>&3); then
                if try_return smb_bolus; then
                    touch /tmp/pump_loop_completed -r /tmp/pump_loop_enacted
                    smb_verify_status
                else
                    echo "Bolus failed: retrying"
                    if retry_fail smb_check_everything; then
                        if ( grep -q '"units":' enact/smb-suggested.json 2>&3); then
                            if try_fail smb_bolus; then
                                touch /tmp/pump_loop_completed -r /tmp/pump_loop_enacted
                                smb_verify_status
                            fi
                        fi
                    fi
                fi
            fi
            touch /tmp/pump_loop_completed -r /tmp/pump_loop_enacted
            # run pushover immediately after completing loop for more timely carbsReq notifications without race conditions
            PUSHOVER_TOKEN="$(get_pref_string .pushover_token "")"
            PUSHOVER_USER="$(get_pref_string .pushover_user "")"
            if [[ ! -z "$PUSHOVER_TOKEN" && ! -z "$PUSHOVER_USER" ]]; then
                oref0-pushover $PUSHOVER_TOKEN $PUSHOVER_USER # 2>&1 >> /var/log/openaps/pushover.log &
            fi

            # before each of these (optional) refresh checks, make sure we don't have fresh glucose data
            # if we do, then skip the optional checks to finish up this loop and start the next one
            if ! glucose-fresh; then
                wait_for_silence $upto10s
                if onbattery; then
                    refresh_profile 30
                else
                    refresh_profile 15
                fi
                if ! glucose-fresh; then
                    pumphistory_daily_refresh
                    if ! glucose-fresh; then
                        refresh_after_bolus_or_enact
                    fi
                fi
            fi
            cat /tmp/oref0-updates.txt 2>&3
            touch /tmp/pump_loop_success
            echo Completed oref0-pump-loop at $(date)
            update_display
            run_plugins
            # skip bgproxy if we already have a new glucose value and it's time for another loop
            if ! glucose-fresh; then
                update_bgproxy
            fi
            echo
        else
            # pump-loop errored out for some reason
            fail "$@"
        fi
    fi
}

function run_script() {
  file=$1

  wait_for_silence $upto10s
  echo "Running plugin script ($file)... "
  timeout 60 $file
  echo "Completed plugin script ($file). "

  # -d means to only run the script once, so remove it once run
  if [[ "$2" == "-d" ]]
  then
    #echo "Removing script file ($file)"
    rm $file
  fi
}


function update_bgproxy {
    if [ "$(get_pref_string .enableEnliteBgproxy '')" == "true" ]; then
        echo Calling Bgproxy
        jq 'map({sgv:.sgv, date:.date, dateString:.dateString})' monitor/glucose.json  > monitor/bgproxydata.json
        bgproxy -f monitor/bgproxydata.json
        echo Bgproxy completed
    fi

}

function run_plugins {
        once=plugins/once
        every=plugins/every
        mkdir -p $once
        mkdir -p $every
        echo "scripts placed in this directory will run once after curent loop and be removed" > $once/readme.txt
        echo "scripts placed in this directory will run after every loop" > $every/readme.txt
        find $once/* -executable | while read file; do run_script "$file" -d ; done
        find $every/* -executable | while read file; do run_script "$file" ; done

}

function update_display {
    # TODO: install this globally
    if [ -e /root/src/openaps-menu/scripts/status.sh ]; then
        /root/src/openaps-menu/scripts/status.sh
    elif [ -e /root/src/openaps-menu/scripts/status.js ]; then
        echo "Updating HAT Display..."
        node /root/src/openaps-menu/scripts/status.js
    fi
}

function fail {
    echo -n "oref0-pump-loop failed. "
    if file_is_recent enact/smb-suggested.json && grep "too old" enact/smb-suggested.json >&4; then
        touch /tmp/pump_loop_completed
        wait_for_bg
        echo "Unsuccessful oref0-pump-loop (BG too old) at $(date)"
    # don't treat suspended pump as a complete failure
    elif file_is_recent monitor/status.json && grep -q '"suspended": true' monitor/status.json; then
        refresh_profile 15; pumphistory_daily_refresh
        refresh_after_bolus_or_enact
        echo "Incomplete oref0-pump-loop (pump suspended) at $(date)"
    else
        pumphistory_daily_refresh
        maybe_mmtune
        echo "If pump and rig are close enough, this error usually self-resolves. Stand by for the next loop."
        echo Unsuccessful oref0-pump-loop at $(date)
    fi
    if grep -q "percent" monitor/temp_basal.json; then
        echo "Error: pump is set to % basal type. The pump won’t accept temporary basal rates in this mode. Please change the pump to absolute u/hr so temporary basal rates will then be able to be set."
    fi
    if ! cat preferences.json | jq . >&4; then
        echo Error: syntax error in preferences.json: please go correct your typo.
    fi
    update_display
    run_plugins
    echo
    exit 1
}

# The function "check_duty_cycle" checks if the loop has to run and it returns 0 if so.
# It exits the script with code 0 otherwise.
#
# The given duty cycle time defines in which time frames the loop should start. 
# E.g., if the duty cycle is 300 seconds (5 min) and a loop starts now and will be successful, the next round won't start earlier than in 300 seconds.
# The decision is based on the time since last *successful* loop started.
# Hence, the loop will not be limited if the last loop was unsuccessful.
# On the other hand, it is not guaranteed that a loop will run as often as defined by the time frames.
# This is due to the fact that the script is just called every minute, and thus may start later then the given number of seconds.
# Additionally, if the loop takes more than the given time to complete it also can not execute in the given time frame.
#
# The intention is that the battery consumption is reduced (Pump and Pi) if the loop runs less often.
# This is most dramatic for Enlite CGM, where wait_for_bg can't be used.
#
# !Note duty cycle times are set in seconds.
# Use DUTY_CYCLE=0 (default) if you don't want to limit the loop
#
# Suggestion for PI HAT + MDT users
# DUTY_CYCLE=150 
DUTY_CYCLE=${DUTY_CYCLE:-0}    #0=off, other = delay in seconds

function check_duty_cycle { 
    DUTY_CYCLE_FILE="/tmp/pump_loop_start"
    LOOP_SUCCESS_FILE="/tmp/pump_loop_success"
    if [ -e "$DUTY_CYCLE_FILE" ]; then
        DIFF_SECONDS=$(expr $(date +%s) - $(stat -c %Y $DUTY_CYCLE_FILE))
        DIFF_NEXT_SECONDS=$(expr $DIFF_SECONDS + 30)
        if [ -e "$LOOP_SUCCESS_FILE" ]; then
            DIFF_SUCCESS=$(expr $(stat -c %Y $DUTY_CYCLE_FILE) - $(stat -c %Y $LOOP_SUCCESS_FILE))
        else
            # didn't find the loop success file --> start new cycle
            DIFF_SUCCESS=1
        fi
        
        if [ "$DUTY_CYCLE" -gt "0" ]; then
            if [ "$DIFF_SUCCESS" -gt "0" ]; then
                # fast return if last loop was unsuccessful
                echo "Last loop was not successful --> start new cycle."
                return 0
            elif [ "$DIFF_SECONDS" -gt "$DUTY_CYCLE" ]; then 
                touch "$DUTY_CYCLE_FILE"
                echo "$DIFF_SECONDS (of $DUTY_CYCLE) since last run --> start new cycle."
                return 0
            elif [ "$DIFF_NEXT_SECONDS" -gt "$DUTY_CYCLE" ]; then
                WAIT=$(expr $DUTY_CYCLE - $DIFF_SECONDS)
                echo -n "Wait for $WAIT seconds till duty cylce starts... "
                # we want to avoid wait since it keeps the CPU busy
                sleep $WAIT
                touch "$DUTY_CYCLE_FILE"
                echo "start new cycle."
                return 0
            else 
                echo "$DIFF_SECONDS (of $DUTY_CYCLE) since last run --> stop now."
                exit 0
            fi
        else
            #fast return if duty cycling is disabled
            #echo "duty cycling disabled; start loop"
            return 0 
        fi
    elif [ "$DUTY_CYCLE" -gt "0" ]; then
        echo "$DUTY_CYCLE_FILE does not exist; create it to start the loop duty cycle."
        # do not use timestamp from system uptime, since this could result in a endless reboot loop...
        touch "$DUTY_CYCLE_FILE"
        return 0
    fi
}


function smb_reservoir_before {
    # Refresh reservoir.json and pumphistory.json
    retry_fail refresh_pumphistory_and_meal
    try_fail cp monitor/reservoir.json monitor/lastreservoir.json
    wait_for_silence $upto10s
    retry_fail check_clock
    echo -n "Checking that pump clock: "
    (cat monitor/clock-zoned.json; echo) | nonl
    echo -n " is within 90s of current time: " && date +'%Y-%m-%dT%H:%M:%S%z'
    if (( $(bc <<< "$(to_epochtime $(cat monitor/clock-zoned.json)) - $(epochtime_now)") < -55 )) || (( $(bc <<< "$(to_epochtime $(cat monitor/clock-zoned.json)) - $(epochtime_now)") > 55 )); then
        echo Pump clock is more than 55s off: attempting to reset it and reload pumphistory
        # Check for bolus in progress and issue 3xESC to back out of pump bolus menu
        smb_verify_status \
        && try_return mdt -f internal button esc esc esc 2>&3 \
        && oref0-set-device-clocks
        echo "Checking system clock against pump clock:"
        oref0-set-system-clock
    fi
    (( $(bc <<< "$(to_epochtime $(cat monitor/clock-zoned.json)) - $(epochtime_now)") > -90 )) \
    && (( $(bc <<< "$(to_epochtime $(cat monitor/clock-zoned.json)) - $(epochtime_now)") < 90 )) || { echo "Error: pump clock refresh error / mismatch"; fail "$@"; }
    find monitor/ -mmin -5 -size +5c | grep -q pumphistory || { echo "Error: pumphistory-24h >5m old (or empty)"; fail "$@"; }
}

# check if the temp was read more than 5m ago, or has been running more than 10m
function smb_old_temp {
    (find monitor/ -mmin +5 -size +5c | grep -q temp_basal && echo temp_basal.json more than 5m old) \
    || ( jq --exit-status "(.duration-1) % 30 < 20" monitor/temp_basal.json >&4 \
        && echo -n "Temp basal set more than 10m ago: " && jq .duration monitor/temp_basal.json
        )
}

# make sure everything is in the right condition to SMB
function smb_check_everything {
    try_fail smb_reservoir_before
    retry_fail smb_enact_temp
    if (grep -q '"units":' enact/smb-suggested.json 2>&3); then
        # wait_for_silence and retry if first attempt fails
        ( smb_verify_suggested || smb_suggest ) \
        && wait_for_silence $upto10s \
        && smb_verify_reservoir \
        && smb_verify_status \
        || ( echo Retrying SMB checks
            wait_for_silence 10
            smb_verify_status \
            && smb_reservoir_before \
            && smb_enact_temp \
            && ( smb_verify_suggested || smb_suggest ) \
            && smb_verify_reservoir \
            && smb_verify_status
            )
    else
        echo -n "No bolus needed. "
    fi
}

function smb_suggest {
    rm -rf enact/smb-suggested.json
    #changed the check below to report the error for the correct file...
    ls enact/smb-suggested.json 2>&3 >&4 && die "enact/smb-suggested.json present"
    # Run determine-basal
    echo -n Temp refresh
    retry_fail check_clock
    retry_fail check_tempbasal
    try_fail calculate_iob && echo -n "ed: "
    echo -n "monitor/temp_basal.json: " && cat monitor/temp_basal.json | colorize_json
    try_fail determine_basal && cp -up enact/smb-suggested.json enact/suggested.json
    try_fail smb_verify_suggested
}

function determine_basal {
    #cat monitor/meal.json

    update_glucose_noise

    if ( grep -q 12 settings/model.json ); then
      oref0-determine-basal monitor/iob.json monitor/temp_basal.json monitor/glucose.json settings/profile.json --auto-sens settings/autosens.json --meal monitor/meal.json --reservoir monitor/reservoir.json > enact/smb-suggested.json
    else
      oref0-determine-basal monitor/iob.json monitor/temp_basal.json monitor/glucose.json settings/profile.json --auto-sens settings/autosens.json --meal monitor/meal.json --microbolus --reservoir monitor/reservoir.json > enact/smb-suggested.json
    fi
    cp -up enact/smb-suggested.json enact/suggested.json
}

# enact the appropriate temp before SMB'ing, (only if smb_verify_enacted fails or a 0 duration temp is requested)
function smb_enact_temp {
    smb_suggest
    echo -n "enact/smb-suggested.json: "
    cat enact/smb-suggested.json | colorize_json '. | del(.predBGs) | del(.reason)'
    cat enact/smb-suggested.json | colorize_json .reason
    if (jq --exit-status .predBGs.COB enact/smb-suggested.json >&4); then
        echo -n "COB: " && cat enact/smb-suggested.json |colorize_json .predBGs.COB
    fi
    if (jq --exit-status .predBGs.UAM enact/smb-suggested.json >&4); then
        echo -n "UAM: " && cat enact/smb-suggested.json |colorize_json .predBGs.UAM
    fi
    if (jq --exit-status .predBGs.IOB enact/smb-suggested.json >&4); then
        echo -n "IOB: " && cat enact/smb-suggested.json |colorize_json .predBGs.IOB
    fi
    if (jq --exit-status .predBGs.ZT enact/smb-suggested.json >&4); then
        echo -n "ZT:  " && cat enact/smb-suggested.json |colorize_json .predBGs.ZT
    fi
    if ( grep -q duration enact/smb-suggested.json 2>&3 && ! smb_verify_enacted || jq --exit-status '.duration == 0' enact/smb-suggested.json >&4 ); then (
        rm enact/smb-enacted.json
        ( mdt settempbasal enact/smb-suggested.json && jq '.  + {"received": true}' enact/smb-suggested.json > enact/smb-enacted.json ) 2>&3 >&4
        grep -q duration enact/smb-enacted.json || ( mdt settempbasal enact/smb-suggested.json && jq '.  + {"received": true}' enact/smb-suggested.json > enact/smb-enacted.json ) 2>&3 >&4
        cp -up enact/smb-enacted.json enact/enacted.json
        echo -n "enact/smb-enacted.json: " && cat enact/smb-enacted.json | colorize_json '. | "Rate: \(.rate) Duration: \(.duration)"'
        ) 2>&1 | egrep -v "^  |subg_rfspy|handler"
    else
        echo -n "No smb_enact needed. "
    fi
    try_fail smb_verify_status
    smb_verify_enacted
}

function smb_verify_enacted {
    # Read the currently running temp and
    # verify rate matches (within 0.03U/hr) and duration is no shorter than 5m less than smb-suggested.json
    rm -rf monitor/temp_basal.json
    ( echo -n Temp refresh \
        && ( check_tempbasal || check_tempbasal ) 2>&3 >&4 && echo -n "ed: " \
    ) && echo -n "monitor/temp_basal.json: " && cat monitor/temp_basal.json | colorize_json \
    && jq --slurp --exit-status 'if .[1].rate then (.[0].rate > .[1].rate - 0.03 and .[0].rate < .[1].rate + 0.03 and .[0].duration > .[1].duration - 5 and .[0].duration < .[1].duration + 20) else true end' monitor/temp_basal.json enact/smb-suggested.json >&4
}

function smb_verify_reservoir {
    # Read the pump reservoir volume and verify it is within 0.1U of the expected volume
    rm -rf monitor/reservoir.json
    echo -n "Checking reservoir: " \
    && ( check_reservoir || check_reservoir ) 2>&3 >&4 \
    && echo -n "reservoir level before: " \
    && cat monitor/lastreservoir.json | nonl \
    && echo -n ", suggested: " \
    && jq -r -C -c .reservoir enact/smb-suggested.json | nonl \
    && echo -n " and after: " \
    && cat monitor/reservoir.json \
    && (( $(bc <<< "$(< monitor/lastreservoir.json) - $(< monitor/reservoir.json) <= 0.1") )) \
    && (( $(bc <<< "$(< monitor/lastreservoir.json) - $(< monitor/reservoir.json) >= 0") )) \
    && (( $(bc <<< "$(jq -r .reservoir enact/smb-suggested.json | nonl) - $(< monitor/reservoir.json) <= 0.1") )) \
    && (( $(bc <<< "$(jq -r .reservoir enact/smb-suggested.json | nonl) - $(< monitor/reservoir.json) >= 0") ))
}

function smb_verify_suggested {
    if grep incorrectly enact/smb-suggested.json 2>&3; then
        echo "Checking system clock against pump clock:"
        oref0-set-system-clock 2>&3 >&4
    fi
    if grep "!= lastTemp rate" enact/smb-suggested.json; then
        echo Pumphistory/temp mismatch: retrying
        return 1
    fi
    if [ -s enact/smb-suggested.json ] && jq -e -r .deliverAt enact/smb-suggested.json; then
        echo -n "Checking deliverAt: " && jq -r .deliverAt enact/smb-suggested.json | nonl \
        && echo -n " is within 1m of current time: " && date \
        && (( $(bc <<< "$(to_epochtime $(jq -r .deliverAt enact/smb-suggested.json)) - $(epochtime_now)") > -60 )) \
        && (( $(bc <<< "$(to_epochtime $(jq -r .deliverAt enact/smb-suggested.json)) - $(epochtime_now)") < 60 )) \
        && echo "and that smb-suggested.json is less than 1m old" \
        && (file_is_recent_and_min_size enact/smb-suggested.json 1)
    else
        echo No deliverAt found.
        cat enact/smb-suggested.json
        false
    fi
}

function smb_verify_status {
    # Read the pump status and verify it is not bolusing
    rm -rf monitor/status.json
    echo -n "Checking pump status (suspended/bolusing): "
    ( check_status || check_status ) 2>&3 >&4 \
    && if grep -q 12 monitor/status.json; then
    echo -n "x12 model detected. "
        return 0
    fi \
    && cat monitor/status.json | colorize_json \
    && grep -q '"status": "normal"' monitor/status.json \
    && grep -q '"bolusing": false' monitor/status.json \
    && if grep -q '"suspended": true' monitor/status.json; then
        echo -n "Pump suspended; "
        unsuspend_if_no_temp
        refresh_pumphistory_and_meal
        false
    fi
}

function smb_bolus {
    # Verify that the suggested.json is less than 5 minutes old
    # and administer the supermicrobolus
    #mdt bolus does not work on the 723 yet. Only tested on 722 pump
    file_is_recent enact/smb-suggested.json \
    && if (grep -q '"units":' enact/smb-suggested.json 2>&3); then
        # press ESC four times on the pump to exit Bolus Wizard before SMBing, to help prevent A52 errors
        echo -n "Sending ESC ESC, ESC ESC ESC ESC to exit any open menus before SMBing "
        try_return mdt -f internal button esc esc 2>&3 \
        && sleep 0.5s \
        && try_return mdt -f internal button esc esc esc esc 2>&3 \
        && echo -n "and bolusing " && jq .units enact/smb-suggested.json | nonl && echo " units" \
        && ( try_return mdt bolus enact/smb-suggested.json 2>&3 && jq '.  + {"received": true}' enact/smb-suggested.json > enact/bolused.json ) \
        && rm -rf enact/smb-suggested.json
    else
        echo -n "No bolus needed. "
    fi
}
# keeping this here in case mdt bolus command does not work, just swap the lines.
# && try_return openaps report invoke enact/bolused.json 2>&3 >&4 | tail -1 \

function refresh_after_bolus_or_enact {
    last_treatment_time=$(date -d $(cat monitor/pumphistory-24h-zoned.json | jq .[0].timestamp | noquotes))
    newer_enacted=$(find enact -newer monitor/pumphistory-24h-zoned.json -size +5c | egrep /enacted)
    newer_bolused=$(find enact -newer monitor/pumphistory-24h-zoned.json -size +5c | egrep /bolused)
    enacted_duration=$(grep duration enact/enacted.json)
    bolused_units=$(grep units enact/bolused.json)
    if [[ $newer_enacted && $enacted_duration ]] || [[ $newer_bolused && $bolused_units ]]; then
        echo -n "Refreshing pumphistory because: "
        if [[ $newer_enacted && $enacted_duration ]]; then
            echo -n "enacted, "
        fi
        if [[ $newer_bolused && $bolused_units ]]; then
            echo -n "bolused, "
        fi
        # refresh profile if >5m old to give SMB a chance to deliver
        refresh_profile 3
        refresh_pumphistory_and_meal || return 1
        # TODO: check that last pumphistory record is newer than last bolus and refresh again if not
        calculate_iob && determine_basal 2>&3 \
        && cp -up enact/smb-suggested.json enact/suggested.json \
        && echo -n "IOB: " && cat enact/smb-suggested.json | jq .IOB
        true
    fi

}

function unsuspend_if_no_temp {
    # If temp basal duration is zero, unsuspend pump
    if (cat monitor/temp_basal.json | jq '. | select(.duration == 0)' | grep duration); then
        if check_pref_bool .unsuspend_if_no_temp false; then
            echo Temp basal has ended: unsuspending pump
            mdt resume 2>&3
        else
            echo unsuspend_if_no_temp not enabled in preferences.json: leaving pump suspended
        fi
    else
        # If temp basal duration is > zero, do nothing
        echo Temp basal still running: leaving pump suspended
    fi
}

# calculate random sleep intervals, and get TTY port
function prep {
    set -o pipefail

    upto10s=$[ ( $RANDOM / 3277 + 1) ]
    upto30s=$[ ( $RANDOM / 1092 + 1) ]
    upto45s=$[ ( $RANDOM / 728 + 1) ]
    # override random upto30s and upto45s waits with contents of /tmp/wait_for_silence if it exists (for multi-rig testing)
    if [ -f "/tmp/wait_for_silence" ]; then
        upto30s=$(head -1 /tmp/wait_for_silence)
        upto45s=$(head -1 /tmp/wait_for_silence)
    fi

    # necessary to enable SPI communication over edison GPIO 110 on Edison + Explorer Board
    [ -f /sys/kernel/debug/gpio_debug/gpio110/current_pinmux ] && echo mode0 > /sys/kernel/debug/gpio_debug/gpio110/current_pinmux
}

# requests new cgm values from enlite sensor if configured as cgm
function if_mdt_get_bg {
    echo -n
    if [ "$(get_pref_string .cgm '')" == "mdt" ]; then
        echo \
        && echo Attempting to retrieve MDT CGM data from pump
        retry_fail mdt_get_bg 
        echo MDT CGM data retrieved
    fi
}

# helper function for if_mdt_get_bg
function mdt_get_bg {
        if oref0-mdt-update 2>&1 | tee -a /var/log/openaps/cgm-loop.log >&3; then
            return 0
        else
            # if Enlite data retrieval fails, run smb_reservoir_before function to see if time needs to be reset
            smb_reservoir_before
            return 1
        fi
}

# make sure we can talk to the pump and get a valid model number
function preflight {
    echo -n "Preflight "
    # re-create directories if they got manually deleted
    mkdir -p settings
    mkdir -p monitor
    # only 515, 522, 523, 715, 722, 723, 554, and 754 pump models have been tested with SMB
    ( check_model || check_model ) 2>&3 >&4 \
    && ( egrep -q "[57](15|22|23|54)" settings/model.json || (grep -q 12 settings/model.json && echo -n "(x12 models do not support SMB safety checks, SMB will not be available.) ") ) \
    && echo -n "OK. " \
    || ( echo -n "fail. "; false )
}

# reset radio, init world wide pump (if applicable), mmtune, and wait_for_silence 60 if no signal
function mmtune {
    #carelink is deprecated in 0.7.0
    #if grep "carelink" pump.ini 2>&1 >/dev/null; then
    #echo "using carelink; skipping mmtune"
    #    return
    #fi

    echo -n "Listening for $upto45s s silence before mmtuning: "
    wait_for_silence $upto45s

    oref0-mmtune

    MEDTRONIC_FREQUENCY=`cat monitor/medtronic_frequency.ini`

    #Determine how long to wait, based on the RSSI value of the best frequency
    rssi_wait=$(grep -v setFreq monitor/mmtune.json | grep -A2 $(jq .setFreq monitor/mmtune.json) | tail -1 | awk '($1 < -60) {print -($1+60)*2}')
    if [[ $rssi_wait -gt 1 ]]; then
        if [[ $rssi_wait -gt 90 ]]; then
            rssi_wait=90
        fi
        echo "waiting for $rssi_wait second silence before continuing"
        wait_for_silence $rssi_wait
        echo "Done waiting for rigs with better signal."
    else
        echo "No wait required."
    fi
}

function maybe_mmtune {
    if file_is_recent /tmp/pump_loop_completed 15; then
        # mmtune ~ 25% of the time
        [[ $(( ( RANDOM % 100 ) )) > 75 ]] \
        && mmtune
    else
        echo "pump_loop_completed more than 15m old; waiting for $upto45s s silence before mmtuning"
        update_display
        wait_for_silence $upto45s
        mmtune
    fi
}

# Refresh pumphistory etc.
function refresh_pumphistory_and_meal {
    retry_return check_status 2>&3 >&4 || return 1
    ( grep -q 12 settings/model.json || \
         test $(jq .suspended monitor/status.json) == true || \
         test $(jq .bolusing monitor/status.json) == false ) \
         || { echo; cat monitor/status.json | colorize_json; return 1; }
    try_return invoke_pumphistory_etc || return 1
    try_return invoke_reservoir_etc || return 1
    echo -n "meal.json "
    
    dir_name=~/test_data/oref0-meal$(date +"%Y-%m-%d-%H%M")
    #echo dir_name = $dir_name
    # mkdir -p $dir_name
    #cp monitor/pumphistory-24h-zoned.json settings/profile.json monitor/clock-zoned.json monitor/glucose.json settings/basal_profile.json monitor/carbhistory.json $dir_name
    if ! retry_return run_remote_command 'oref0-meal monitor/pumphistory-24h-zoned.json settings/profile.json monitor/clock-zoned.json monitor/glucose.json settings/basal_profile.json monitor/carbhistory.json' > monitor/meal.json.new ; then
        echo; echo "Couldn't calculate COB"
        return 1
    fi
    try_return check_cp_meal || return 1
    echo -n "refreshed: "
    cat monitor/meal.json | jq -cC .
}

function check_cp_meal {
    if ! [ -s monitor/meal.json.new ]; then
        echo meal.json.new not found
        return 1
    fi
    if grep "Could not parse input data" monitor/meal.json.new; then
        cat monitor/meal.json
        return 1
    fi
    if jq -e .carbs monitor/meal.json.new >&3; then
        cp monitor/meal.json.new monitor/meal.json
    else
        echo meal.json.new invalid
        return 1
    fi
}

function calculate_iob {
    dir_name=~/test_data/oref0-calculate-iob$(date +"%Y-%m-%d-%H%M")
    #echo dir_name = $dir_name
    # mkdir -p $dir_name
    #cp  monitor/pumphistory-24h-zoned.json settings/profile.json monitor/clock-zoned.json settings/autosens.json $dir_name

    run_remote_command 'oref0-calculate-iob monitor/pumphistory-24h-zoned.json settings/profile.json monitor/clock-zoned.json settings/autosens.json' > monitor/iob.json.new || { echo; echo "Couldn't calculate IOB"; fail "$@"; }
    [ -s monitor/iob.json.new ] && jq -e .[0].iob monitor/iob.json.new >&3 && cp monitor/iob.json.new monitor/iob.json || { echo; echo "Couldn't copy IOB"; fail "$@"; }
}

function invoke_pumphistory_etc {
    check_clock 2>&3 >&4 || return 1
    read_pumphistory 2>&3  || return 1
    check_tempbasal 2>&3 >&4 || return 1
}

function invoke_reservoir_etc {
    check_reservoir 2>&3 >&4 || return 1
    check_status 2>&3 >&4 || return 1
    check_battery 2>&3 >&4 || return 1
}

# refresh settings/profile if it's more than 1h old
function refresh_old_profile {
    file_is_recent_and_min_size settings/profile.json 60 && echo -n "Profile less than 60m old; " \
        || { echo -n "Old settings: " && get_settings; }
    if valid_pump_settings; then
        echo -n "Profile valid. "
    else
        echo -n "Profile invalid: "
        ls -lart settings/profile.json
        get_settings
    fi
}

# get-settings report invoke settings/model.json settings/bg_targets_raw.json settings/bg_targets.json settings/insulin_sensitivities_raw.json settings/insulin_sensitivities.json settings/basal_profile.json settings/settings.json settings/carb_ratios.json settings/pumpprofile.json settings/profile.json
function get_settings {
    SUCCESS=1
    
    [[ $SUCCESS -eq 1 ]] && retry_return check_model 2>&3 >&4 || SUCCESS=0
    [[ $SUCCESS -eq 1 ]] && retry_return read_insulin_sensitivities 2>&3 >&4 || SUCCESS=0
    [[ $SUCCESS -eq 1 ]] && retry_return read_carb_ratios 2>&3 >&4 || SUCCESS=0
    [[ $SUCCESS -eq 1 ]] && retry_return read_bg_targets 2>&3 >&4 || SUCCESS=0
    [[ $SUCCESS -eq 1 ]] && retry_return read_basal_profile 2>&3 >&4 || SUCCESS=0
    [[ $SUCCESS -eq 1 ]] && retry_return read_settings 2>&3 >&4 || SUCCESS=0
    [[ $SUCCESS -eq 1 ]] && retry_return openaps report invoke settings/insulin_sensitivities.json settings/bg_targets.json 2>&3 >&4 || SUCCESS=0

    # If there was a failure, force a full refresh on the next loop
    if [[ $SUCCESS -eq 0 ]]; then
        echo "pump profile refresh unsuccessful; trying again on next loop"
        touch -d "1 hour ago" settings/settings.json
        touch -d "1 hour ago" settings/profile.json
        return 1
    fi

    # generate settings/pumpprofile.json without autotune

    #dir_name=~/test_data/oref0-get-profile$(date +"%Y-%m-%d-%H%M")-pump
    #echo dir_name = $dir_name
    # mkdir -p $dir_name
    #cp  settings/settings.json settings/bg_targets.json settings/insulin_sensitivities.json settings/basal_profile.json preferences.json settings/carb_ratios.json settings/temptargets.json settings/model.json $dir_name
    
    run_remote_command 'oref0-get-profile settings/settings.json settings/bg_targets.json settings/insulin_sensitivities.json settings/basal_profile.json preferences.json settings/carb_ratios.json settings/temptargets.json --model=settings/model.json' 2>&3 | jq . > settings/pumpprofile.json.new || { echo "Couldn't refresh pumpprofile"; fail "$@"; }
    if [ -s settings/pumpprofile.json.new ] && jq -e .current_basal settings/pumpprofile.json.new >&4; then
        mv settings/pumpprofile.json.new settings/pumpprofile.json
        echo -n "Pump profile refreshed; "
    else
        echo "Invalid pumpprofile.json.new after refresh"
        ls -lart settings/pumpprofile.json.new
    fi
    # generate settings/profile.json.new with autotune
    dir_name=~/test_data/oref0-get-profile$(date +"%Y-%m-%d-%H%M")-pump-auto
    #echo dir_name = $dir_name
    # mkdir -p $dir_name
    #cp  settings/settings.json settings/bg_targets.json settings/insulin_sensitivities.json settings/basal_profile.json preferences.json settings/carb_ratios.json settings/temptargets.json settings/model.json settings/autotune.json $dir_name

    run_remote_command 'oref0-get-profile settings/settings.json settings/bg_targets.json settings/insulin_sensitivities.json settings/basal_profile.json preferences.json settings/carb_ratios.json settings/temptargets.json --model=settings/model.json --autotune settings/autotune.json' | jq . > settings/profile.json.new || { echo "Couldn't refresh profile"; fail "$@"; }
    if [ -s settings/profile.json.new ] && jq -e .current_basal settings/profile.json.new >&4; then
        mv settings/profile.json.new settings/profile.json
        echo -n "Settings refreshed; "
    else
        echo "Invalid profile.json.new after refresh"
        ls -lart settings/profile.json.new
    fi
}

function refresh_profile {
    if [ -z $1 ]; then
        profileage=10
    else
        profileage=$1
    fi
    file_is_recent_and_min_size settings/settings.json $profileage && echo -n "Settings less than $profileage minutes old. " \
    || get_settings
}

function onbattery {
    # check whether battery level is < 90%
    if is_edison; then
        jq --exit-status ".battery < 90 and (.battery > 70 or .battery < 60)" monitor/edison-battery.json >&4
    else
        jq --exit-status ".battery < 90" monitor/edison-battery.json >&4
    fi
}

function wait_for_bg {
    if [ "$(get_pref_string .cgm '')" == "mdt" ]; then
        echo "MDT CGM configured; not waiting"
    elif egrep -q "Warning:" enact/smb-suggested.json 2>&3 || egrep -q "Could not parse clock data" monitor/meal.json 2>&3; then
        echo "Retrying without waiting for new BG"
    elif egrep -q "Waiting [0](\.[0-9])?m ([0-6]?[0-9]s )?to microbolus again." enact/smb-suggested.json 2>&3; then
        echo "Retrying microbolus without waiting for new BG"
    else
        echo -n "Waiting up to 4 minutes for new BG: "
        for i in `seq 1 24`; do
            if glucose-fresh; then
                break
            else
                echo -n .
                sleep 10
                # flash the radio LEDs so we know the rig is alive
                listen -t 1s 2>&4
            fi
        done
        echo
    fi
}

function glucose-fresh {
    # set mtime of monitor/glucose.json to the time of its most recent glucose value
    if jq  -e .[0].display_time monitor/glucose.json >/dev/null; then
        touch -d $(jq -r .[0].display_time monitor/glucose.json) monitor/glucose.json 2>&3
    else
        touch -d "$(date -R -d @$(jq .[0].date/1000 monitor/glucose.json))" monitor/glucose.json 2>&3
    fi
    if [[ ! -e /tmp/pump_loop_completed ]]; then
        echo "First loop: not waiting"
        return 0;
    elif (find monitor/ -newer /tmp/pump_loop_completed | grep -q glucose.json); then
        echo glucose.json newer than pump_loop_completed
        return 0;
    else
        return 1;
    fi
}

#function refresh_pumphistory {
    #read_pumphistory;
#}

function setglucosetimestamp {
    touch -d "$(date -R -d @$(jq .[0].date/1000 monitor/glucose.json))" monitor/glucose.json
}

#These are replacements for pump control functions which call ecc1's mdt and medtronic repositories
function check_reservoir() {
  set -o pipefail
  mdt reservoir 2>&3 | tee monitor/reservoir.json && nonl < monitor/reservoir.json \
    && egrep -q "[0-9]" monitor/reservoir.json
}
function check_model() {
  set -o pipefail
  mdt model 2>&3 | tee settings/model.json
}
function check_status() {
  set -o pipefail
  if ( grep -q 12 settings/model.json ); then
    echo '{ "status":"status on x12 not supported" }' > monitor/status.json
  else
    mdt status 2>&3 | tee monitor/status.json 2>&3 >&4 && cat monitor/status.json | colorize_json .status
  fi
}
function check_clock() {
  set -o pipefail
  mdt clock 2>&3 | tee monitor/clock-zoned.json >&4 && grep -q T monitor/clock-zoned.json
}
function check_battery() {
  set -o pipefail
  mdt battery 2>&3 | tee monitor/battery.json && cat monitor/battery.json | jq .voltage
}
function check_tempbasal() {
  set -o pipefail
  mdt tempbasal 2>&3 | tee monitor/temp_basal.json >&4 && cat monitor/temp_basal.json | jq .temp | grep absolute >&4 && cp monitor/temp_basal.json monitor/last_temp_basal.json
}

# clear and refresh the 24h pumphistory file approximatively every 6 hours.
# It queries 27h of data, full refresh when oldest data is greater than 33 hours old.
function pumphistory_daily_refresh() {
    lastRecordTimestamp=$(jq -r '.[-1].timestamp' monitor/pumphistory-24h-zoned.json 2>&3)
    dateCutoff=$(to_epochtime "33 hours ago")
    echo "Daily refresh if $lastRecordTimestamp < $dateCutoff " >&3
    if [[ -z "$lastRecordTimestamp" || "$lastRecordTimestamp" == *"null"* || $(to_epochtime $lastRecordTimestamp) -le $dateCutoff ]]; then
            echo -n "Pumphistory >33h long: " && retry_return read_full_pumphistory
    fi
}

function read_pumphistory() {
  set -o pipefail
  topRecordId=$(jq -r '.[0].id' monitor/pumphistory-24h-zoned.json 2>&3)
  echo "Quering pump for history since: $topRecordId" >&3
  if [[ -z "$topRecordId" || "$topRecordId" == *"null"* ]]; then
    read_full_pumphistory
  else
    echo -n "Pump history update"
    try_fail mv monitor/pumphistory-24h-zoned.json monitor/pumphistory-24h-zoned-old.json
    if ((pumphistory -f $topRecordId  2>&3 | jq -f openaps.jq 2>&3 ) && cat monitor/pumphistory-24h-zoned-old.json) | jq -s '.[0] + .[1]'  > monitor/pumphistory-24h-zoned.json; then
      newRecords=$(jq -s '(.[0] | length) - (.[1] | length)' monitor/pumphistory-24h-zoned.json monitor/pumphistory-24h-zoned-old.json)
      try_fail rm monitor/pumphistory-24h-zoned-old.json
      echo -n "d through $(jq -r '.[0].timestamp' monitor/pumphistory-24h-zoned.json) with ${newRecords} new records; "
      #compare_with_fullhistory;
    else
      # exit status 2 means we didn't find the topRecordId in the pump, we should request a full history refresh.
      exit_status=$?
      if [ $exit_status -eq 2 ]; then
        read_full_pumphistory
      else
        try_fail mv monitor/pumphistory-24h-zoned-old.json monitor/pumphistory-24h-zoned.json
        echo " failed. Last record $(jq -r '.[0].timestamp' monitor/pumphistory-24h-zoned.json)"
        return 1
      fi
    fi
  fi
}

function compare_with_fullhistory() {
  set -o pipefail
  rm monitor/full-pumphistory-24h-zoned.json
  echo -n "Full history for testing refresh" \
  && ((( pumphistory -n 27 2>&3 | jq -f openaps.jq 2>&3 | tee monitor/full-pumphistory-24h-zoned.json 2>&3 >&4 ) \
      && echo -n ed) \
     || (echo " failed. "; return 1)) \
  && echo " through $(jq -r '.[0].timestamp' monitor/full-pumphistory-24h-zoned.json)"
  match=$(jq --slurpfile full monitor/full-pumphistory-24h-zoned.json --slurpfile inc monitor/pumphistory-24h-zoned.json -n '([($inc[] | length), ($full[] | length)] | min) as $len | $len <= 0 or $inc[][0:$len] == $full[][0:$len]')
  if [ "$match" = "true" ] ; then
    echo "Incremental pump history matches full history"
  else
    timestamp=`date +%Y-%m-%d.%H:%M:%S`
    echo "ERROR! Incremental pump history does NOT matches full history, saving monitor/full-pumphistory-24h-zoned.json.$timestamp and monitor/pumphistory-24h-zoned.json.$timestamp"
    cp monitor/full-pumphistory-24h-zoned.json monitor/full-pumphistory-24h-zoned.json.$timestamp
    cp monitor/pumphistory-24h-zoned.json monitor/pumphistory-24h-zoned.json.$timestamp
  fi
}

function update_glucose_noise() {
    if check_pref_bool .calc_glucose_noise false; then
      echo "Recalculating glucose noise measurement"
      oref0-calculate-glucose-noise monitor/glucose.json > monitor/glucose.json.new
      mv monitor/glucose.json.new monitor/glucose.json
    fi
}

function valid_pump_settings() {
  SUCCESS=1

  [[ $SUCCESS -eq 1 ]] && valid_insulin_sensitivities >&3 || { [[ $SUCCESS -eq 0 ]] || echo "Invalid insulin_sensitivites.json"; SUCCESS=0; }
  [[ $SUCCESS -eq 1 ]] && valid_carb_ratios >&3 || { [[ $SUCCESS -eq 0 ]] || echo "Invalid carb_ratios.json"; SUCCESS=0; }
  [[ $SUCCESS -eq 1 ]] && valid_bg_targets >&3 || { [[ $SUCCESS -eq 0 ]] || echo "Invalid bg_targets.json"; SUCCESS=0; }
  [[ $SUCCESS -eq 1 ]] && valid_basal_profile >&3 || { [[ $SUCCESS -eq 0 ]] || echo "Invalid basal_profile.json"; SUCCESS=0; }
  [[ $SUCCESS -eq 1 ]] && valid_settings >&3 || { [[ $SUCCESS -eq 0 ]] || echo "Invalid settings.json"; SUCCESS=0; }
  
  if [[ $SUCCESS -eq 0 ]]; then
    return 1
  else
    return 0
  fi
}

function read_full_pumphistory() {
  set -o pipefail
  rm monitor/pumphistory-24h-zoned.json
  echo -n "Full history refresh" \
  && ((( pumphistory -n 27 2>&3 | jq -f openaps.jq 2>&3 | tee monitor/pumphistory-24h-zoned.json 2>&3 >&4 ) \
      && echo -n ed) \
     || (
        echo " failed. "
        rm monitor/pumphistory-24h-zoned.json
        return 1
        )) \
  && echo " through $(jq -r '.[0].timestamp' monitor/pumphistory-24h-zoned.json)"
}
function read_bg_targets() {
  set -o pipefail
  mdt targets 2>&3 | tee settings/bg_targets_raw.json && valid_bg_targets
}
function valid_bg_targets() {
  set -o pipefail
  local FILE="${1:-settings/bg_targets_raw.json}"
  [ -s $FILE ] && cat $FILE | jq .units | grep -e "mg/dL" -e "mmol"
}
function read_insulin_sensitivities() {
  set -o pipefail
  mdt sensitivities 2>&3 | tee settings/insulin_sensitivities_raw.json && valid_insulin_sensitivities
}
function valid_insulin_sensitivities() {
  set -o pipefail
  local FILE="${1:-settings/insulin_sensitivities_raw.json}"
  [ -s $FILE ] && cat $FILE | jq .units | grep -e "mg/dL" -e "mmol"
}
function read_basal_profile() {
  set -o pipefail
  mdt basal 2>&3 | tee settings/basal_profile.json && valid_basal_profile
}
function valid_basal_profile() {
  set -o pipefail
  local FILE="${1:-settings/basal_profile.json}"
  [ -s $FILE ] && cat $FILE | jq .[0].start | grep "00:00:00"
}
function read_settings() {
  set -o pipefail
  mdt settings 2>&3 | tee settings/settings.json && valid_settings
}
function valid_settings() {
  set -o pipefail
  local FILE="${1:-settings/settings.json}"
  [ -s $FILE ] && cat $FILE | jq .maxBolus | grep -e "[0-9]\+"
}
function read_carb_ratios() {
  set -o pipefail
  mdt carbratios 2>&3 | tee settings/carb_ratios.json && valid_carb_ratios
}
function valid_carb_ratios() {
  set -o pipefail
  local FILE="${1:-settings/carb_ratios.json}"
  [ -s $FILE ] && cat $FILE | jq .units | grep -e grams -e exchanges
}

retry_fail() {
    "$@" || { echo Retry 1 of $*; "$@"; } \
    || { wait_for_silence $upto10s; echo Retry 2 of $*; "$@"; } \
    || { wait_for_silence $upto30s; echo Retry 3 of $*; "$@"; } \
    || { echo "Couldn't $*"; fail "$@"; }
}
retry_return() {
    "$@" || { echo Retry 1 of $*; "$@"; } \
    || { wait_for_silence $upto10s; echo Retry 2 of $*; "$@"; } \
    || { wait_for_silence $upto30s; echo Retry 3 of $*; "$@"; } \
    || { echo "Couldn't $* - continuing"; return 1; }
}
try_fail() {
    "$@" || { echo "Couldn't $*"; fail "$@"; }
}
try_return() {
    "$@" || { echo "Couldn't $*" - continuing; return 1; }
}

main "$@"