#!/bin/bash -xe
# Common code used by propose_translation_update.sh and
# upstream_translation_update.sh

# 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.

# Initial transifex setup
function setup_translation ()
{

    # Initialize the transifex client, if there's no .tx directory
    if [ ! -d .tx ] ; then
        tx init --host=https://www.transifex.com
    fi
}

# Setup a project for transifex
function setup_project ()
{
    project=$1

    tx set --auto-local -r ${project}.${project}-translations \
        "${project}/locale/<lang>/LC_MESSAGES/${project}.po" \
        --source-lang en \
        --source-file ${project}/locale/${project}.pot -t PO \
        --execute
}

# Setup git so that git review works
function setup_git ()
{
    git config user.name "OpenStack Proposal Bot"
    git config user.email "openstack-infra@lists.openstack.org"
    git config gitreview.username "proposal-bot"
}

# Setup project so that git review works, sets global variable
# COMMIT_MSG.
function setup_review ()
{
    ORG="$1"
    PROJECT="$2"

    COMMIT_MSG="Imported Translations from Transifex"

    git review -s

    # See if there is an open change in the transifex/translations
    # topic. If so, get the change id for the existing change for use
    # in the commit msg.
    change_info=`ssh -p 29418 proposal-bot@review.openstack.org gerrit query --current-patch-set status:open project:$ORG/$PROJECT topic:transifex/translations owner:proposal-bot`
    previous=`echo "$change_info" | grep "^  number:" | awk '{print $2}'`
    if [ "x${previous}" != "x" ] ; then
        change_id=`echo "$change_info" | grep "^change" | awk '{print $2}'`
        # Read returns a non zero value when it reaches EOF. Because we use a
        # heredoc here it will always reach EOF and return a nonzero value.
        # Disable -e temporarily to get around the read.
        set +e
        read -d '' COMMIT_MSG <<EOF
Imported Translations from Transifex

Change-Id: $change_id
EOF
        set -e
    fi
}

# Propose patch using COMMIT_MSG
function send_patch ()
{
    # Don't send a review if nothing has changed.
    if [ `git diff --cached |wc -l` -gt 0 ]
    then
        # Commit and review
        git commit -F- <<EOF
$COMMIT_MSG
EOF
        git review -t transifex/translations

    fi
}