#!/usr/bin/env bash
: ${SC_DBD:="/home/$USER/Dropbox"}
: ${SC_DBS:="$SC_DBD/Public/screenshots"}
: ${SC_DBT:="$SC_DBD/Public/temp"}
: ${SC_DOM:="http://eaguru.guru"}

sc_shorten() {
    REPLY="${1:2:2}${1:5:2}${1:8:2}${1:11:12}"
}

# http://stackoverflow.com/a/10797966
uri_encode() {
    REPLY="$(echo -En "$@" | curl -Gso /dev/null -w %{url_effective} --data-urlencode @- "")"
    REPLY="${REPLY:2}"
}

copy_scr() {
    local fn="$1"
    local short="$(basename $fn)"
    local r='20\d\d-\d\d-\d\d_\d\d\d\d\d\d\d\d.(png|jpg)'
    grep -Pq "$r" <<<"$short" || return 1

    cp "$fn" "$SC_DBS/"
    sc_shorten "$short"
    uri_encode "$REPLY"
    REPLY="$SC_DOM/s/$REPLY"
    return 0
}

copy_tmp() {
    local fn="$1"
    local dlen=${#SC_DBT}
    if [ "${fn:0:dlen}" != "${SC_DBT}" ]; then
        cp "$fn" "$SC_DBT/"
    fi
    local short="$(basename "$fn")"

    uri_encode "$short"
    REPLY="$SC_DOM/t/$REPLY"
    return 0
}

sc() {
    if [ -n "${ZSH_VERSION:-}" ]; then
        # syntax is too different to bother tbh
        echo "please run with bash"
        return 1
    fi
    which xsel &>/dev/null || {
        echo "please install xsel"
        return 1
    }

    local clipboard=""
    for f; do
        f="$(readlink -f "$f")"
        if [ ! -e "$f" ]; then
            continue
        fi
        copy_scr "$f" || copy_tmp "$f"
        clipboard="$clipboard"$'\n'"$REPLY"
    done
    xsel -b <<<"${clipboard:1}"
    return 0
}

sc "$@"