#!/bin/sh

## move and resize windows ##

. /tmp/wms_var 

FLAG=$1                          # flag
FW=$(pfw)                        # focused window id
RID=$(lsw -r)                    # root window id
RW=$(wattr w $RID)               # root window width
RH=$(wattr h $RID)               # root window heigth
SW=$((RW - 2 * BW - 2 * GAP))    # screen utilizable width
SH=$((RH - 2 * BW - 2 * GAP))    # screen utilizable height

usage() {
    cat<<EOF
usage:
wms_moveresize.sh [ -n, -s, -e, -o, -r, -l, -d, -u, -w, -W, -h, -H ]
-f) fullsize
-n) half north
-s) half south
-e) half est
-o) half west
-r) move right
-l) move left
-d) move down
-u) move up
-w) resize width -
-W) resize width +
-h) resize height -
-H) resize height +
EOF
}

# half north value
north() {
    x=$GAP
    y=$GAP
    w=$SW
    h=$((SH / 2 - GAP - BW))
}

# half south value
south() {
    x=$GAP
    y=$((SH / 2 + GAP + BW))
    w=$SW
    h=$((SH / 2))
}

# half est value
est() {
    x=$((SW / 2 + GAP + BW))
    y=$GAP
    w=$((SW / 2))
    h=$SH
}

# half west value
west() {
    x=$GAP
    y=$GAP
    w=$((SW / 2 - BW - GAP))
    h=$SH
}

# fulsize function
fullsize() {
    fs=$(atomx WM_FS $FW)        # atom fullsize and original size position
    fs_width=$((RW - BW * 2))    # fullsize width
    fs_height=$((RH - BW * 2))    # fullsize height
    x=0 
    y=0

    # if atom exist and it is in fullsize
    if [ -n "$fs" ] & [ "$(wattr wh $FW)" = "$fs_width $fs_height" ]; then
        wtp $fs $FW    # restore size and position 
        atomx -d WM_FS $FW    # remove from list
	
    else    # if it's not atom and it's not in fullsize
        atomx WM_FS="$(wattr xywh $FW)" $FW    # create atom and save original size an position
        wtp $x $y $fs_width $fs_height $FW    # gets fullsize

    fi
}

case $FLAG in
    -f)
	fullsize
	wtp $x $y $w $h $FW
	;;
    -n)
	north
	wtp $x $y $w $h $FW
	;;
    -s)
	south
	wtp $x $y $w $h $FW
	;;
    -e)
	est
	wtp $x $y $w $h $FW
	;;
    -o)
	west
	wtp $x $y $w $h $FW
	;;
    -r)    # rigth
	wmv 10 0 $FW
	;;
    -l)    # left
	wmv -10 0 $FW
	;;
    -d)    # down
	wmv 0 10 $FW
	;;
    -u)    # up
	wmv 0 -10 $FW
	;;
    -w)    # width -
        wrs -10 0 $FW
        ;;
    -W)    # width +
        wrs 10 0 $FW
        ;;
    -h)    # higth -
        wrs 0 -10 $FW
        ;;
    -H)    # hight +
        wrs 0 10 $FW
        ;;
    *)
	usage
	;;
esac