#!/usr/bin/env bash
NotImage () {
    echo -n "" | dmenu -p "NOT AN IMAGE"
    exit
}

# Display clipboard max length

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 [[ "${selection}" == "" ]]
then
    exit 1
fi
if "${selection}" == "primary" ]]
then
    selection2="clipboard"
else
    selection2="primary"
fi


clipboard="$(xclip -out -sel "${selection}" -r)"

DICL_LEN=48
if [[ "$(xclip -sel ${selection} -o | head -n1 | cut -c 2-4)" == "PNG" ]]
then
   disp_clip="IMAGE"
else
    disp_clip="$(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/tmpclip.txt \
            | uniq \
            | dmenu -g 1 -l 5 || exit \
        )"
        echo -n "${choice}" | xclip -sel "${selection}"
        ;;

    image)
        # Menu
        # 1: line from paragraph
        # 2: param 
        # 
        file_name="tmp_xclip"
        xclip -o -sel c > "/tmp/${file_name}.png"
        file "/tmp/${file_name}.png" \
            | cut -d ':' -f 2 \
            | grep "image" || NotImage
        # sed so that dmenu doesn't skip if one line
        tesseract "/tmp/${file_name}.png" stdout > "/tmp/${file_name}"
        sed "1i\ " "/tmp/${file_name}" | dmenu -l 10 -g 1 -p "PREVIEW:" -l 20 || exit
        xclip -sel "${selection}" -in "/tmp/${file_name}"
        ;;
esac