#!/usr/bin/env bash


VOLTAGE_FILE=${1:-"/sys/class/power_supply/hidpp_battery_1/voltage_now"}    


declare -A LEVELS 

LEVELS["4186"]="100"					
# 4156	99%					
# 4143	98%					
# 4133	97%					
# 4122	96%					
# 4113	95%					
# 4103	94%					
# 4094	93%					
# 4086	92%					
# 4076	91%					
# 4067	90%					
# 406	89%					
# 4051	88%					
# 4043	87%					
# 4036	86%					
# 4027	85%					
# 4019	84%					
# 4012	83%					
# 4004	82%					
# 3997	81%					
# 3989	80%					
# 3983	79%					
# 3976	78%					
# 3969	77%					
# 3961	76%					
# 3955	75%					
# 3949	74%					
# 3942	73%					
# 3935	72%					
# 3929	71%					
# 3922	70%					
# 3916	69%					
# 3909	68%					
# 3902	67%					
# 3896	66%					
# 389	65%					
# 3883	64%					
# 3877	63%					
# 387	62%					
# 3865	61%					
# 3859	60%					
# 3853	59%					
# 3848	58%					
# 3842	57%					
# 3837	56%					
# 3833	55%					
# 3828	54%					
# 3824	53%					
# 3819	52%					
# 3815	51%					
# 3811	50%					
# 3808	49%					
# 3804	48%					
# 38	    47%					
# 3797	46%					
# 3793	45%					
# 379	44%					
# 3787	43%					
# 3784	42%					
# 3781	41%					
# 3778	40%					
# 3775	39%					
# 3772	38%					
# 377	37%					
# 3767	36%					
# 3764	35%					
# 3762	34%					
# 3759	33%					
# 3757	32%					
# 3754	31%					
# 3751	30%					
# 3748	29%					
# 3744	28%					
# 3741	27%					
# 3737	26%					
# 3734	25%					
# 373	24%					
# 3726	23%					
# 3724	22%					
# 372	21%					
# 3717	20%					
# 3714	19%					
# 371	18%					
# 3706	17%					
# 3702	16%					
# 3697	15%					
# 3693	14%					
# 3688	13%					
# 3683	12%					
# 3677	11%					
# 3671	10%					
# 3666	9%					
# 3662	8%					
# 3658	7%					
# 3654	6%					
# 3646	5%					
# 3633	4%					
# 3612	3%					
# 3579	2%					
# 3537	1%					
LEVELS["35"]="0"	
# )

VOLTAGE=`cat $VOLTAGE_FILE`
VOLTAGE=${VOLTAGE::-3}

for i in "${!LEVELS[@]}"
do
    if [ "$VOLTAGE" -ge "$i" ]; then
        echo "$LEVELS[$i]"
        break
    fi
done