#!/bin/bash

# translated documents need to be translated at least to this degree to get
# published.  (use an integer number between 0 an 100)
PO4A_KEEP="100"

set -e

echo $PWD

if ! which po4a; then
    echo "ERROR: Missing po4a (apt-get install po4a)"
    exit 1
fi

version=$(po4a --version | sed -En 's,po4a version ([0-9][0-9.]+[0-9]).*,\1,p')
if ruby -e "exit(Gem::Version.new('$version') < Gem::Version.new('0.58'))"; then
    echo "ERROR: po4a v0.58 or higher required (try from backports)"
    exit 1
fi

PROJECT_ROOT="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )/.."
cd ${PROJECT_ROOT}
mkdir -p po

languages=$(ruby -ryaml -e "data = YAML::load(open('_config.yml')); puts data['languages']")
test -n "$languages"

if [ "$1" == "md2po" ]; then
    languages=$(cd _data; find * -type d)
fi

# convert newlines to spaces
languages=`echo $languages`

for section in _docs _pages; do
    po4a_conf=$(mktemp)
    echo "[po4a_langs] $languages" > $po4a_conf
    echo "[po4a_paths] po/${section}.pot \$lang:po/${section}.\$lang.po" >> $po4a_conf
    cat >> $po4a_conf <<EOF

[options] opt:"--addendum-charset=UTF-8" opt:"--localized-charset=UTF-8" opt:"--master-charset=UTF-8" opt:"--master-language=en_US" opt:"--msgmerge-opt='--no-wrap'" opt:"--porefs=file" opt:"--wrap-po=newlines"

[po4a_alias:markdown] text opt:"--option markdown" opt:"--option yfm_keys=title,title_head" opt:"--addendum-charset=UTF-8" opt:"--localized-charset=UTF-8" opt:"--master-charset=UTF-8" opt:"--keep=${PO4A_KEEP}"

EOF
    if [ $section == "_docs" ]; then
	for f in ${section}/*.md; do
	    echo "[type: markdown] $f \$lang:$section/\$lang/$(basename $f)" >> $po4a_conf
	done
    else
	for f in *.md contribute/*.md; do

            # exclude this file from translations
            [ $f == "how-to-chair-a-meeting.md" ] && continue

	    echo "[type: markdown] $f \$lang:\$lang/$f" >> $po4a_conf
	done
    fi
    po4a --verbose $po4a_conf &
done
wait # wait for the po4a processes to complete

# no need to keep these around
rm -f po/*.en.po