#!/bin/sh

# A screen-grab will be saved in $SCREEN_GRAB_DEST_DIR if set, otherwise
# in $HOME/screen_grab/ if it exsts; otherwise $HOME.

default_basename=cutbuffer_grab
default_extension=txt
date_format=+%F_%H%M%S
SCREEN_GRAB_DEST_DIR=$HOME/$default_basename

chdir_to_destination()
{
    [ -d "$SCREEN_GRAB_DEST_DIR" ] || mkdir -p "$SCREEN_GRAB_DEST_DIR"
    cd "$SCREEN_GRAB_DEST_DIR"
}

choose_destination()
{
        local stamp basename extension now
        case $# in
                1) ;;
                0) now=$(date "$date_format")
                   DESTINATION=$default_basename.$now.$default_extension
                   return
                   ;;
                *) return 1 ;;
        esac

        case "$1" in
        *.*)
                basename=${1%.*}
                extension=${1##*.}
                ;;
        *)
                basename=$1
                extension=$default_extension
                ;;
        esac
        DESTINATION=$basename.$extension
}

get_out_the_way()
{
        local stamp basename extension destination
        [ -e "$1" ] || return 0

        stamp=$(date -r "$1" "$date_format") || return
        case "$1" in
        *.*)
                basename=${1%.*}
                extension=${1##*.}
                destination=$basename.$stamp.$extension
                ;;
        *)
                destination=$1.$stamp
                ;;
        esac
        [ ! -e "$destination" ] || return
        mv "$1" "$destination"
}

extract()
{
    sort -z -k1,1 -r | head -z -n 1 | xargs -0 printf '%s\n' | cut -d' ' -f2
}


set -e

chdir_to_destination

f=$(find . -maxdepth 1 -type f -printf "%C@ %h/%f\0" | extract)

set -x
exec 2> /tmp/cbp.log

xcb -s 0 < "$f"
xsel --input < "$f"
mkdir -p .popped
mv "$f" -t .popped