#!/bin/sh

TARGET=$1                             # image target
TMPCOL="/tmp/tmpcol"                  # path to the extracted colors file
WMSVAR="$HOME/.config/wms/wms_var"    # window manager variables
XVAR="$HOME/.Xresources"              # default x variable file
NC="3"                                # number of colors to extract

# color extractor
colext() {
    convert $TARGET -colors $NC -depth 6 -format '%c' -alpha off histogram:info:- | awk -v RS="" '{print $11,$7,$3}' | tr -d '#'
}

# if the image file exists, extract the colors and store them temporarily
if [ -f "$TARGET" ]; then
    colext > $TMPCOL

    # check if N colors have been extracted
    if [ "$(wc -w < $TMPCOL)" = "$NC" ]; then
	# load extracted colors into variables
	read ac ic bc < $TMPCOL
	    	
	# overwrite the values in ~/.config/wms/wms_var
	sed -i "s/^.*\bAC=\b.*$/AC=$ac/" $WMSVAR    # new acive color
	sed -i "s/^.*\bIC=\b.*$/IC=$ic/" $WMSVAR    # new inactive color
	sed -i "s/^.*\bBC=\b.*$/BC=$bc/" $WMSVAR    # new background color

	# overwrite the term and nsxiv values in ~/.Xresources
	sed -i "s/\(XTerm\*background:\).*/\XTerm\*background: \#$bc/" $XVAR
	sed -i "s/\(Nsxiv\*window.background:\).*/\Nsxiv\*window.background: \#$bc/" $XVAR

	# apply the change
	wms_value.sh -d
	wms_mainrole.sh -t
	xrdb -merge $XVAR

    fi
fi