#!/usr/bin/env bash

set -o errexit
set -o pipefail

KOLLA_DEBUG=${KOLLA_DEBUG:-0}
KOLLA_CONFIG_PATH=${KOLLA_CONFIG_PATH:-/etc/kolla}

KOLLA_OPENSTACK_COMMAND=openstack

if [[ $KOLLA_DEBUG -eq 1 ]]; then
    set -o xtrace
    KOLLA_OPENSTACK_COMMAND="$KOLLA_OPENSTACK_COMMAND --debug"
fi

# This script is meant to be run once after running start for the first
# time.  This script downloads a cirros image and registers it.  Then it
# configures networking and nova quotas to allow 40 m1.small instances
# to be created.

ARCH=$(uname -m)
CIRROS_RELEASE=${CIRROS_RELEASE:-0.6.1}
IMAGE_PATH=/opt/cache/files/
IMAGE_URL=https://github.com/cirros-dev/cirros/releases/download/${CIRROS_RELEASE}/
IMAGE=cirros-${CIRROS_RELEASE}-${ARCH}-disk.img
IMAGE_NAME=cirros
IMAGE_TYPE=linux

IP_VERSION=${IP_VERSION:-4}

DEMO_NET_CIDR=${DEMO_NET_CIDR:-'10.0.0.0/24'}
DEMO_NET_GATEWAY=${DEMO_NET_GATEWAY:-'10.0.0.1'}
DEMO_NET_DNS=${DEMO_NET_DNS:-'8.8.8.8'}

# This EXT_NET_CIDR is your public network,that you want to connect to the internet via.
ENABLE_EXT_NET=${ENABLE_EXT_NET:-1}
EXT_NET_CIDR=${EXT_NET_CIDR:-'10.0.2.0/24'}
EXT_NET_RANGE=${EXT_NET_RANGE:-'start=10.0.2.150,end=10.0.2.199'}
EXT_NET_GATEWAY=${EXT_NET_GATEWAY:-'10.0.2.1'}

# Sanitize language settings to avoid commands bailing out
# with "unsupported locale setting" errors.
unset LANG
unset LANGUAGE
LC_ALL=C
export LC_ALL
for i in curl openstack; do
    if [[ ! $(type ${i} 2>/dev/null) ]]; then
        if [ "${i}" == 'curl' ]; then
            echo "Please install ${i} before proceeding"
        else
            echo "Please install python-${i}client before proceeding"
        fi
        exit
    fi
done

# Test for clouds.yaml
if [[ ! -f ${KOLLA_CONFIG_PATH}/clouds.yaml ]]; then
    echo "${KOLLA_CONFIG_PATH}/clouds.yaml is missing."
    echo " Did your deploy finish successfully?"
    exit 1
fi

# Specify clouds.yaml file to use
export OS_CLIENT_CONFIG_FILE=${KOLLA_CONFIG_PATH}/clouds.yaml

# Select admin account from clouds.yaml
export OS_CLOUD=kolla-admin


# Test to ensure configure script is run only once
if $KOLLA_OPENSTACK_COMMAND image list | grep -q cirros; then
    echo "This tool should only be run once per deployment."
    exit
fi

echo Checking for locally available cirros image.
# Let's first try to see if the image is available locally
# nodepool nodes caches them in $IMAGE_PATH
if ! [ -f "${IMAGE_PATH}/${IMAGE}" ]; then
    IMAGE_PATH='./'
    if ! [ -f "${IMAGE_PATH}/${IMAGE}" ]; then
        echo "None found, downloading cirros image (version $CIRROS_RELEASE)."
        curl --fail -L -o ${IMAGE_PATH}/${IMAGE} ${IMAGE_URL}/${IMAGE}
    fi
else
    echo Using cached cirros image from the nodepool node.
fi

echo Creating glance image.
$KOLLA_OPENSTACK_COMMAND image create --disk-format qcow2 --container-format bare --public \
    --property os_type=${IMAGE_TYPE} --file ${IMAGE_PATH}/${IMAGE} ${IMAGE_NAME}

echo Configuring neutron.

$KOLLA_OPENSTACK_COMMAND router create demo-router

SUBNET_CREATE_EXTRA=""

if [[ $IP_VERSION -eq 6 ]]; then
    # NOTE(yoctozepto): Neutron defaults to "unset" (external) addressing for IPv6.
    # The following is to use stateful DHCPv6 (RA for routing + DHCPv6 for addressing)
    # served by Neutron Router and DHCP services.
    # Setting this for IPv4 errors out instead of being ignored.
    SUBNET_CREATE_EXTRA="${SUBNET_CREATE_EXTRA} --ipv6-ra-mode dhcpv6-stateful"
    SUBNET_CREATE_EXTRA="${SUBNET_CREATE_EXTRA} --ipv6-address-mode dhcpv6-stateful"
fi

$KOLLA_OPENSTACK_COMMAND network create demo-net
$KOLLA_OPENSTACK_COMMAND subnet create --ip-version ${IP_VERSION} \
    --subnet-range ${DEMO_NET_CIDR} --network demo-net \
    --gateway ${DEMO_NET_GATEWAY} --dns-nameserver ${DEMO_NET_DNS} \
    ${SUBNET_CREATE_EXTRA} demo-subnet

$KOLLA_OPENSTACK_COMMAND router add subnet demo-router demo-subnet

if [[ $ENABLE_EXT_NET -eq 1 ]]; then
    $KOLLA_OPENSTACK_COMMAND network create --external --provider-physical-network physnet1 \
        --provider-network-type flat public1
    $KOLLA_OPENSTACK_COMMAND subnet create --no-dhcp --ip-version ${IP_VERSION} \
        --allocation-pool ${EXT_NET_RANGE} --network public1 \
        --subnet-range ${EXT_NET_CIDR} --gateway ${EXT_NET_GATEWAY} public1-subnet

    if [[ $IP_VERSION -eq 4 ]]; then
        $KOLLA_OPENSTACK_COMMAND router set --external-gateway public1 demo-router
    else
        # NOTE(yoctozepto): In case of IPv6 there is no NAT support in Neutron,
        # so we have to set up native routing. Static routes are the simplest.
        # We need a static IP address for the router to demo.
        $KOLLA_OPENSTACK_COMMAND router set --external-gateway public1 \
            --fixed-ip subnet=public1-subnet,ip-address=${EXT_NET_DEMO_ROUTER_ADDR} \
            demo-router
    fi
fi

# Get admin user and tenant IDs
ADMIN_PROJECT_ID=$($KOLLA_OPENSTACK_COMMAND project list | awk '/ admin / {print $2}')
ADMIN_SEC_GROUP=$($KOLLA_OPENSTACK_COMMAND security group list --project ${ADMIN_PROJECT_ID} | awk '/ default / {print $2}')

# Sec Group Config
$KOLLA_OPENSTACK_COMMAND security group rule create --ingress --ethertype IPv${IP_VERSION} \
    --protocol icmp ${ADMIN_SEC_GROUP}
$KOLLA_OPENSTACK_COMMAND security group rule create --ingress --ethertype IPv${IP_VERSION} \
    --protocol tcp --dst-port 22 ${ADMIN_SEC_GROUP}
# Open heat-cfn so it can run on a different host
$KOLLA_OPENSTACK_COMMAND security group rule create --ingress --ethertype IPv${IP_VERSION} \
    --protocol tcp --dst-port 8000 ${ADMIN_SEC_GROUP}
$KOLLA_OPENSTACK_COMMAND security group rule create --ingress --ethertype IPv${IP_VERSION} \
    --protocol tcp --dst-port 8080 ${ADMIN_SEC_GROUP}

if [ ! -f ~/.ssh/id_ecdsa.pub ]; then
    echo Generating ssh key.
    ssh-keygen -t ecdsa -N '' -f ~/.ssh/id_ecdsa
fi
if [ -r ~/.ssh/id_ecdsa.pub ]; then
    echo Configuring nova public key and quotas.
    $KOLLA_OPENSTACK_COMMAND keypair create --public-key ~/.ssh/id_ecdsa.pub mykey
fi

# Increase the quota to allow 40 m1.small instances to be created

# 40 instances
$KOLLA_OPENSTACK_COMMAND quota set --instances 40 ${ADMIN_PROJECT_ID}

# 40 cores
$KOLLA_OPENSTACK_COMMAND quota set --cores 40 ${ADMIN_PROJECT_ID}

# 96GB ram
$KOLLA_OPENSTACK_COMMAND quota set --ram 96000 ${ADMIN_PROJECT_ID}

# add default flavors, if they don't already exist
if ! $KOLLA_OPENSTACK_COMMAND flavor list | grep -q m1.tiny; then
    $KOLLA_OPENSTACK_COMMAND flavor create --id 1 --ram 512 --disk 1 --vcpus 1 m1.tiny
    $KOLLA_OPENSTACK_COMMAND flavor create --id 2 --ram 2048 --disk 20 --vcpus 1 m1.small
    $KOLLA_OPENSTACK_COMMAND flavor create --id 3 --ram 4096 --disk 40 --vcpus 2 m1.medium
    $KOLLA_OPENSTACK_COMMAND flavor create --id 4 --ram 8192 --disk 80 --vcpus 4 m1.large
    $KOLLA_OPENSTACK_COMMAND flavor create --id 5 --ram 16384 --disk 160 --vcpus 8 m1.xlarge
fi

cat << EOF

Done.

To deploy a demo instance, run:

openstack --os-cloud=kolla-admin server create \\
    --image ${IMAGE_NAME} \\
    --flavor m1.tiny \\
    --key-name mykey \\
    --network demo-net \\
    demo1
EOF