#!/bin/sh

# check if there is variable file in /tmp for source. if it's not there, copy it
if [ -f /tmp/wms_var ]; then
    . /tmp/wms_var
else
    cp $HOME/.config/wms/wms_var /tmp/wms_var
    . /tmp/wms_var
fi

FLAG=$1                  # input
RID=$(lsw -r)            # root window id
FW=$(pfw)                # focused window 
WMSVAR="/tmp/wms_var"    # variable temporary file

usage() {
    cat<<EOF
usage:
wms_revalue.sh [ -b, -B, -d, -g, -G, -m, -M, -w, -W]
-b) minimize borderwidth
-B) maximize borderwidth
-d) load default
-g) minimize gaps
-G) maximize
-m) minimize tiling master area
-M) maximize tiling master area
-w) minimize window percentage
-W) maximize window percentage
EOF
}

border_inc() {
    if [ $BW -le 10 ]; then
	sed -i "s/^.*\bBW=\b.*$/BW=$((BW + 2))/" $WMSVAR
	wms_mainrole.sh $FW
    fi
}    # +2 pixel calculation

border_dec() {
    if [ $BW -ge 4 ]; then
	sed -i "s/^.*\bBW=\b.*$/BW=$((BW - 2))/" $WMSVAR
	wms_mainrole.sh $FW
    fi
}    # -2 pixel calculation

gap_inc() {
    if [ $GAP -le 40 ]; then
	sed -i "s/^.*\bGAP=\b.*$/GAP=$((GAP + 2))/" $WMSVAR
	wms_usher.sh -t
    fi
}

gap_dec() {
    if [ $GAP -ge 2 ]; then
	sed -i "s/^.*\bGAP=\b.*$/GAP=$((GAP - 2))/" $WMSVAR
	wms_usher.sh -t
    fi
}

master_inc() {
    if [ $MP -le 80 ]; then
	sed -i "s/^.*\bMP=\b.*$/MP=$((MP + 5))/" $WMSVAR
	wms_usher.sh -t
    fi
}    # 5% + calculation

master_dec() {
    if [ $MP -ge 20 ]; then
	sed -i "s/^.*\bMP=\b.*$/MP=$((MP - 5))/" $WMSVAR
	wms_usher.sh -t
    fi
}    # 5% - calculation

windowperc_inc() {
    if [ $WP -le 90 ]; then
	sed -i "s/^.*\bWP=\b.*$/WP=$((WP + 5))/" $WMSVAR
	wms_usher.sh -w
    fi
}    # 5% + calculation

windowperc_dec() {
    if [ $WP -ge 60 ]; then
	sed -i "s/^.*\bWP=\b.*$/WP=$((WP - 5))/" $WMSVAR
	wms_usher.sh -w
    fi
}    # 5% - calculation

if [ -n "$FLAG" ]; then
    case $FLAG in
	-b)    # decrease border width
	    border_dec
	    ;;
	-B)    # increase border width
	    border_inc
	    ;;
	-d)    # load defaults
	    cp $HOME/.config/wms/wms_var /tmp/wms_var
	    ;;
	-g)    # decrease gaps
	    gap_dec
	    ;;
	-G)    # increase gaps
	    gap_inc
	    ;;
	-m)    # reduce tiling master area
	    master_dec
	    ;;
	-M)    # increase tiling master area
	    master_inc
	    ;;
	-w)    # reduce window size
	    windowperc_dec
	    ;;
	-W)    # increase window size
	    windowperc_inc
	    ;;
	*)
	    usage
	    ;;
    esac

else
    exit 0
fi