#!/bin/bash -xe

#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

REPOSITORY=$1
USE_DOC=$2
DOCNAME=$3

if [ $# -lt 3 ] ; then
    echo "usage $0 REPOSITORY USE_DOC DOCNAME"
    exit 1
fi

DIRECTORY=$DOCNAME
TOPDIR=""
if [ "$USE_DOC" = "1" ] ; then
    DIRECTORY="doc/$DOCNAME"
    TOPDIR="doc/"
fi

if [ -x "$(command -v getconf)" ]; then
    NUMBER_OF_CORES=$(getconf _NPROCESSORS_ONLN)
else
    NUMBER_OF_CORES=2
fi

# common is imported from various RST documents, but what files are
# used varies across RST documents. Thus we need an index file to include
# all files under common. To this aim, we create such document called
# 'common-work' dynamically to generate the POT file of common.
if [[ "$REPOSITORY" = "openstack-manuals" && "$DOCNAME" = "common" ]] ; then
    DIRECTORY="doc/common-work"
    TOPDIR="doc/"
    mkdir -p $DIRECTORY/source
    cp doc/common/source/conf.py $DIRECTORY/source/conf.py
    ln -sf ../../common $DIRECTORY/source/common
    cat <<EOF > $DIRECTORY/source/index.rst
.. toctree::
   :maxdepth: 2
   :glob:

   common/*
EOF
fi

# First remove the old pot file, otherwise the new file will contain
# old references

rm -f ${DIRECTORY}/source/locale/$DOCNAME.pot

sphinx-build -j $NUMBER_OF_CORES -b gettext ${DIRECTORY}/source/ \
    ${DIRECTORY}/source/locale/

if [[ "$REPOSITORY" = "openstack-manuals" && "$DOCNAME" = "common" ]] ; then
    # In case of common, we use the working directory 'common-work'.
    # Copies the generated POT to common/source/locale
    # and finally removes the working directory.
    msgcat ${DIRECTORY}/source/locale/common.pot \
        > ${TOPDIR}common/source/locale/common.pot
    rm -rf $DIRECTORY
else
    # common is translated as part of openstack-manuals, do not
    # include the file in the combined tree if it exists.
    rm -f ${DIRECTORY}/source/locale/common.pot
    # Take care of deleting all temporary files so that
    # "git add ${DIRECTORY}/source/locale" will only add the
    # single pot file.
    msgcat --sort-by-file ${DIRECTORY}/source/locale/*.pot \
        > ${DIRECTORY}/source/$DOCNAME.pot
    rm  ${DIRECTORY}/source/locale/*.pot
    rm -rf ${DIRECTORY}/source/locale/.doctrees/
    mv ${DIRECTORY}/source/$DOCNAME.pot ${DIRECTORY}/source/locale/$DOCNAME.pot
fi