#!/bin/bash
cd $(dirname ${0}) >/dev/null
source inc/main-inc.sh

# Test mode, only run specified sensor script once
if [[ "${1}" == *".sh" ]]; then
    log -t "TEST" "Test mode, only running sensor script '${1}'"

    source "sensors.d/${1}"
    log -t "TEST" "Sensor script quit with exit code $?"
    
    exit 0
fi

START_TIME=$(date +%s)

# Load all sensor scripts and their intervals
declare -A SCRIPTS
for SCRIPT in $(ls sensors.d/*.sh); do
    BASENAME="$(basename ${SCRIPT})"

    eval $(cat "${SCRIPT}" | head -n1)
    log "Loaded sensor '$(basename ${SCRIPT})', runs every ${INTERVAL} seconds"
    
    SCRIPTS["${BASENAME}"]=${INTERVAL}
done

log "Starting scheduler routine"

if [[ "$@" == *"-qs"* ]]; then
    log "Will suppress sensor script outputs"
    export SCRIPTS_QUIET=yes
fi

while true; do
    NOW=$(date +%s)
    DIFF=$(expr ${START_TIME} - ${NOW})

    for SCRIPT in "${!SCRIPTS[@]}"; do
        SCRIPT_EVERY=${SCRIPTS[${SCRIPT}]}
        if [ $( expr ${DIFF} % ${SCRIPT_EVERY} ) -eq 0 ]; then
            log -t "SCHD" "Launching $(basename ${SCRIPT})"
            source "sensors.d/${SCRIPT}" &
        fi
    done

    # Wait one second to make sure the if statements don't fire repeatedly
    # during any specific unix time second, not elegant but works
    sleep 1
done