#!/bin/bash

tmpfile="$(mktemp)"
if [ -t 0 ]; then
    [ "$#" = 0 ] && exit 1
    echo "$@" > "$tmpfile"
else
    cat > "$tmpfile"
    case "$1" in
        r*) dir=en-ru;;
        e*) dir=ru-en;;
    esac
fi

[ -z "$dir" ] &&
if (( $(grep -oP '\p{Latin}' < "$tmpfile" | wc -l) > $(grep -oP '\p{Cyrillic}' < "$tmpfile" | wc -l) )); then
    dir='en-ru'
else
    dir='ru-en'
fi

curl -s \
    http://ядро.орг:9000/translate \
    -H 'Content-Type: text/html' \
    -H "X-Translation-Direction: $dir" \
    --data-binary @- -o- < "$tmpfile" | \
        tail -n +2 | \
        perl -pe 's,<SPAN CLASS=UNKNOWN_WORD>(.*?)</SPAN>,\1,g' |
        sed -e 's/&gt;/>/g' -e 's/&lt;/</g' -e 's/&quot;/"/g'
echo