#!/bin/sh

# 20250627
# A tool script to test a value greater or less than threhold

data=$1
direction=$2
threhold=$3
param_num=$#

print_usage(){
    echo "  Script Usage"
    echo "  ./check_threhold.sh <value> <direction> <threhold>"
    echo "      @Param direction : greater , >"
    echo "                         less , <"
    echo "                         equal , ="
    echo ""
    echo "      E.G. ./check_threhold.sh 500 > 1000"
    echo "        +--> Result : 0"
    echo ""
    echo "      About Result: 1 means true, 0 means fault"
    echo ""
}

main(){
    if [ ${param_num} -ne 3 ];then
        print_usage
        exit 0
    fi

    if [ "${direction}" = "great" ] || [ "${direction}" = ">" ];then
        res= `echo " $data > $threhold" | bc -l`
    elif [ "${direction}" = "less" ] || [ "${direction}" = "<" ];then
        res= `echo " $data < $threhold" | bc -l`
    elif [ "${direction}" = "equal" ] || [ "${direction}" = "=" ];then
        res= `echo " $data = $threhold" | bc -l`
    else
        echo "Invalid direction"
        print_usage
    fi

    echo $res
}

main