#!/usr/bin/env bash
#
# Copyright 2014 Red Hat
# All Rights Reserved.
#
# 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.
#
# Script to spam tripleo-cd-admin on #tripleo while there is a outage of
# the tripleo-ci cloud. Send messages to irc with irc messages from
# https://etherpad.openstack.org/p/cloud-outage, each time the irc message
# changes or every 30 minutes if no changes occurs.


if [ -z "$1" ] ; then
    echo "Supply channel name"
    exit 1
fi

SCRIPTDIR=$(dirname $0)
CURRENT=/var/tmp/outage-bot.current
LAST=/var/tmp/outage-bot.last
NEXTMESSAGE=0
CHANNEL=$1

touch $LAST

function sendmessage {
    PEOPLE=$(cut -d , -f 1 $SCRIPTDIR/../tripleo-cloud/tripleo-cd-admins | xargs echo)
    $SCRIPTDIR/send-irc $CHANNEL CLOUDOUTAGE "$PEOPLE $(sed -e 's/^ircmessage: \?//g' $CURRENT | xargs -0 -I LINE echo -n " --" LINE)"
    NEXTMESSAGE=$(( $(date +%s) + 1800 ))
}

while true ; do
    sleep 60
    curl https://etherpad.openstack.org/p/cloud-outage/export/txt | grep "^ircmessage:" > $CURRENT

    if [ ! -s $CURRENT ] ; then
        continue
    fi

    if ! diff $CURRENT $LAST &> /dev/null ; then
        sendmessage
    fi

    if [ $NEXTMESSAGE -lt $(date +%s) ] ; then
        sendmessage
    fi

    cp $CURRENT $LAST
done