#!/bin/bash
#
# Author: Dimitri Mazmanov (dimitri.mazmanov@ericsson.com)
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
#

set -o xtrace
set -o errexit
set -o nounset
set -o pipefail

# Ensure that openrc containing OpenStack environment variables is present.
source openrc

# Endpoints. Dynamically get IP addresses from another service (keystone)
KINGBIRD_PUBLIC_URL=$(openstack endpoint list | grep keystone | grep public | cut -d '|' -f 8 | cut -d '/' -f 3 | cut -d ':' -f 1)
KINGBIRD_ADMIN_URL=$(openstack endpoint list | grep keystone | grep admin | cut -d '|' -f 8 | cut -d '/' -f 3 | cut -d ':' -f 1)
KINGBIRD_INTERNAL_URL=$(openstack endpoint list | grep keystone | grep internal | cut -d '|' -f 8 | cut -d '/' -f 3 | cut -d ':' -f 1)
KINGBIRD_PORT=8118
KINGBIRD_CONF_FILE=/etc/kingbird/kingbird.conf
KINGBIRD_VERSION='v1.0'
# MySQL
mysql_host=$(mysql -uroot -se "SELECT SUBSTRING_INDEX(USER(), '@', -1);")
mysql_user='kingbird'
mysql_pass='mysql_kb'
mysql_db='kingbird'

# Keystone
admin_password='keystone_kb_pass'
admin_user='kingbird'
admin_tenant_name='services'
auth_uri=$OS_AUTH_URL"v3"

bind_host=$(sed -n 's/^admin_bind_host *= *\([^ ]*.*\)/\1/p' < /etc/keystone/keystone.conf)

function ini_has_option {
    local file=$1
    local section=$2
    local option=$3
    local line
    line=$(sed -ne "/^\[$section\]/,/^\[.*\]/ { /^$option[ \t]*=/ p; }" "$file")
    [ -n "$line" ]
}

function iniset {
    local file=$1
    local section=$2
    local option=$3
    local value=$4

    [[ -z $section || -z $option ]] && return

    if ! grep -q "^\[$section\]" "$file" 2>/dev/null; then
        echo -e "\n[$section]" >>"$file"
    fi
    if ! ini_has_option "$file" "$section" "$option"; then
        sed -i -e "/^\[$section\]/ a\\
$option = $value
" "$file"
    else
        local sep=$(echo -ne "\x01")
        # Replace it
        sed -i -e '/^\['${section}'\]/,/^\[.*\]/ s'${sep}'^\('${option}'[ \t]*=[ \t]*\).*$'${sep}'\1'"${value}"${sep} "$file"
    fi
}

function iniget {
    local xtrace
    xtrace=$(set +o | grep xtrace)
    set +o xtrace
    local file=$1
    local section=$2
    local option=$3
    local line

    line=$(sed -ne "/^\[$section\]/,/^\[.*\]/ { /^$option[ \t]*=/ p; }" "$file")
    echo ${line#*=}
    $xtrace
}

export DEBIAN_FRONTEND=noninteractive
apt-get -qq update
apt-get install -y  \
        curl \
        git \
        libffi-dev \
        libssl-dev \
        libxml2-dev \
        libxslt1-dev \
        libyaml-dev \
        python-dev \
        python-pip \
        python-setuptools

sudo pip install --upgrade pip
sudo pip install tox==1.6.1


#Recreate database
mysql -uroot -e "DROP DATABASE IF EXISTS $mysql_db;"
mysql -uroot -e "CREATE DATABASE $mysql_db CHARACTER SET utf8;"
mysql -uroot -e "GRANT ALL PRIVILEGES ON $mysql_db.* TO '$mysql_user'@'$mysql_host' IDENTIFIED BY '$mysql_pass';"

set +e

#Configure kingbird user
openstack user show kingbird 2>/dev/null
if [ $? -eq 0 ]; then
    echo "User already exists. Skipping.."
else
    echo "Creating Kingbird user.."
    openstack user create --project=${admin_tenant_name} --password=${admin_password} ${admin_user}
    openstack role add --user=${admin_user} --project=${admin_tenant_name} admin
fi

#Configure kingbird endpoints
openstack service show kingbird 2>/dev/null
if [ $? -eq 0 ]; then
    echo "Kingbird service already exists. Skipping.."
else
    echo "Creating Kingbird endpoints.."
    openstack service create --name=kingbird --description="Kingbird" multisite

    openstack endpoint create kingbird public http://${KINGBIRD_PUBLIC_URL}:${KINGBIRD_PORT}/${KINGBIRD_VERSION} --region ${OS_REGION_NAME}
    openstack endpoint create kingbird admin http://${KINGBIRD_ADMIN_URL}:${KINGBIRD_PORT}/${KINGBIRD_VERSION} --region ${OS_REGION_NAME}
    openstack endpoint create kingbird internal http://${KINGBIRD_INTERNAL_URL}:${KINGBIRD_PORT}/${KINGBIRD_VERSION} --region ${OS_REGION_NAME}
fi

set -e

# Cleanup the folder before making a fresh clone
rm -rf kingbird/

#Setup Kingbird
git clone https://github.com/openstack/kingbird.git && cd kingbird/
git checkout tags/0.2.1 -b colorado

pip install -r requirements.txt
pip install --force-reinstall -U .

mkdir -p /etc/kingbird/
oslo-config-generator --config-file tools/config-generator.conf --output-file ${KINGBIRD_CONF_FILE}

# Configure host section
iniset ${KINGBIRD_CONF_FILE} DEFAULT bind_host ${bind_host}
iniset ${KINGBIRD_CONF_FILE} DEFAULT bind_port ${KINGBIRD_PORT}
iniset ${KINGBIRD_CONF_FILE} DEFAULT transport_url $(iniget /etc/nova/nova.conf DEFAULT transport_url)
iniset ${KINGBIRD_CONF_FILE} DEFAULT rpc_backend rabbit
iniset ${KINGBIRD_CONF_FILE} host_details host ${bind_host}

# Configure cache section. Ideally should be removed
iniset ${KINGBIRD_CONF_FILE} cache admin_tenant ${admin_tenant_name}
iniset ${KINGBIRD_CONF_FILE} cache admin_username ${admin<style>
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