#!/usr/bin/env bash
# Configure the designate backend

# Requirements:
# Another Designate service is needed in order to install the SECONDARY zones in it.

# Enable with:
# DESIGNATE_BACKEND_DRIVER=designate

# Dependencies:
# ``functions`` file
# ``designate`` configuration

# install_designate_backend - install any external requirements
# configure_designate_backend - make configuration changes, including those to other services
# init_designate_backend - initialize databases, etc.
# start_designate_backend - start any external services
# stop_designate_backend - stop any external services
# cleanup_designate_backend - remove transient data and cache

# Save trace setting
DP_D2D_XTRACE=$(set +o | grep xtrace)
set +o xtrace

# Defaults
# --------

# This is the Primary Designate MDNS servers.
DESIGNATE_D2D_MASTERS=${DESIGNATE_D2D_MASTERS:-""}

# DNS server to notify (MiniDNS ip:port)
DESIGNATE_D2D_ALSO_NOTIES=${DESIGNATE_D2D_ALSO_NOTIES:-""}

# DNS server to check SOA etc against
DESIGNATE_D2D_NAMESERVERS=${DESIGNATE_D2D_NAMESERVERS:-""}

DESIGNATE_D2D_AUTH_URL=${DESIGNATE_D2D_AUTH_URL:-}
DESIGNATE_D2D_USERNAME=${DESIGNATE_D2D_USERNAME:-}
DESIGNATE_D2D_PASSWORD=${DESIGNATE_D2D_PASSWORD:-}
DESIGNATE_D2D_PROJECT_NAME=${DESIGNATE_D2D_PROJECT_NAME:-}
DESIGNATE_D2D_PROJECT_DOMAIN_NAME=${DESIGNATE_D2D_PROJECT_DOMAIN_NAME:-}
DESIGNATE_D2D_USER_DOMAIN_NAME=${DESIGNATE_D2D_USER_DOMAIN_NAME:-}
DESIGNATE_D2D_REGION_NAME=${DESIGNATE_D2D_REGION_NAME:-}


# Entry Points
# ------------

# install_designate_backend - install any external requirements
function install_designate_backend {
    :
}

# configure_designate_backend - make configuration changes, including those to other services
function configure_designate_backend {
    iniset $DESIGNATE_CONF pool_target:$DESIGNATE_TARGET_ID type designate
    iniset $DESIGNATE_CONF pool_target:$DESIGNATE_TARGET_ID masters $DESIGNATE_D2D_MASTERS

    options="auth_url: $DESIGNATE_D2D_AUTH_URL, username: $DESIGNATE_D2D_USERNAME, password: $DESIGNATE_D2D_PASSWORD,"
    options="$options project_name: $DESIGNATE_D2D_PROJECT_NAME, project_domain_name: $DESIGNATE_D2D_PROJECT_DOMAIN_NAME, user_domain_name: $DESIGNATE_D2D_USER_DOMAIN_NAME, region_name: $DESIGNATE_D2D_REGION_NAME"

    iniset $DESIGNATE_CONF pool_target:$DESIGNATE_TARGET_ID options "$options"

    # Create a Pool Nameserver for each of the Designate nameservers
    local nameserver_ids=""
    IFS=',' read -a nameservers <<< "$DESIGNATE_D2D_NAMESERVERS"

    for nameserver in "${nameservers[@]}"; do
        local nameserver_id
        nameserver_id=`uuidgen`
        iniset $DESIGNATE_CONF pool_nameserver:$nameserver_id host $(dig +short A $nameserver | head -n 1)
        iniset $DESIGNATE_CONF pool_nameserver:$nameserver_id port 53

        # Append the Nameserver ID to the list
        nameserver_ids+=${nameserver_id},
    done

    # Configure the Pool for the set of nameserver IDs, minus the trailing comma
    iniset $DESIGNATE_CONF pool:$DESIGNATE_POOL_ID nameservers "${nameserver_ids:0:-1}"

    # Configure the Pool to Notify the destination Mdns
    iniset $DESIGNATE_CONF pool:$DESIGNATE_POOL_ID also_notifies "$DESIGNATE_D2D_ALSO_NOTIFIES"
}

# create_designate_ns_records - Create Pool NS Records
function create_designate_ns_records_backend {
    # Build an array of the Designate nameservers.
    IFS=',' read -a ns_records <<< "$DESIGNATE_D2D_NAMESERVERS"

    # Create a NS Record for each of the Designate nameservers
    for ns_record in "${ns_records[@]}"; do
        designate server-create --name "${ns_record%%.}."
    done
}

# init_designate_backend - initialize databases, etc.
function init_designate_backend {
    :
}

# start_designate_backend - start any external services
function start_designate_backend {
    :
}

# stop_designate_backend - stop any external services
function stop_designate_backend {
    :
}

# cleanup_designate_backend - remove transient data and cache
function cleanup_designate_backend {
    :
}

# Restore xtrace
$DP_D2D_XTRACE