#!/bin/sh

# Display Clipboard Length
DICL_LEN=48
tmp="/tmp/dmclip"

NotImage () {
    echo -n "" | dmenu -p "NOT AN IMAGE"
    exit
}

selection="$(echo -e "primary\nclipboard\nswap" | 
	dmenu -l 1 -g 3 -p "selection:")"
if [[ "$selection" == "swap" ]]
then
    clipboard="$(xclip -o)"
    xclip -o | xclip -sel c
    echo -n "$clipboard" | xclip -sel c
    exit
elif [ "$selection" == "" ]
then
    exit 1
elif  [ "$selection" == "primary" ]
then
    selection2="clipboard"
else
    selection2="primary"
fi

if xclip -sel $selection -o -t TARGETS | grep "image/png"
then
   disp_clip="IMAGE"
else
	clipboard="$(xclip -out -sel "$selection" -r)"
    disp_clip="$(echo -n "$clipboard" | 
		tr -d '\n' | 
		cut -c -"$DICL_LEN")"
fi

menu_option="$(echo -e "save\nload\nimage\nreplace" | 
	dmenu -l 1 -g 4 -p "'$disp_clip'")"
[ "${menu_option}" ] || exit

case "$menu_option" in
    replace)
        replace_text="$(echo -n "" | 
			dmenu -l 0 -p "replace:")"
        [ "$replace_text" ] || exit
        replace_by_text="$(echo -n "" | 
			dmenu -l 0 -p "by:")"
        [ "$replace_by_text" ] || exit 
        echo "$clipboard" | 
			sed "s/$replace_text/$replace_by_text/g" |
			xclip -r -sel "$selection"
        ;;

    save)
        echo "$clipboard" >> /tmp/tmpclip.txt
        ;;
    load)
        choice="$(sort "${tmp}.txt" | 
			uniq | 
			dmenu -g 1 -l 5)"
		[ "$choice" ] || exit 1
        echo -n "$choice" | xclip -sel "$selection"
        ;;

    image)
        xclip -o -sel c > "${tmp}.png"
        file -bi "${tmp}.png" |
            grep "image/png" || NotImage
        # sed so that dmenu doesn't skip if one line
        tesseract "${tmp}.png" stdout > "$tmp"
        sed "1i\ " "$tmp" | 
			dmenu -l 10 -g 1 -p "PREVIEW:" -l 20 || 
			exit
        xclip -sel "$selection" -i "$tmp"
        ;;
esac