#!/bin/bash -ex

function cleanup() {
    rm -f "/etc/cni/net.d/10-kuryr.conf"
    rm -f "/opt/cni/bin/kuryr-cni"
}

function deploy() {
    local serviceaccount_path
    serviceaccount_path="/var/run/secrets/kubernetes.io/serviceaccount"

    # Prepare token.
    KUBE_TOKEN=$(<${serviceaccount_path}/token)
    POD_NAMESPACE=$(<${serviceaccount_path}/namespace)

    CONTAINERID=""
    x=0
    while [ -z ${CONTAINERID} ] && [ $x -lt 9 ]; do
        sleep 5

        CONTAINERID=$(curl -vvv -H "Authorization: Bearer $KUBE_TOKEN" --cacert ${serviceaccount_path}/ca.crt \
          https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT_HTTPS}/api/v1/namespaces/${POD_NAMESPACE}/pods/${KURYR_CNI_POD_NAME} | jq -r '.["status"]["containerStatuses"][0]["containerID"]')

        CONTAINERID=${CONTAINERID#*//}
        ((x++)) || true
    done;

    # There's no point to run if we cannot get CONTAINERID.
    if [ -z ${CONTAINERID} ]; then
        exit 1
    fi

    # Write the script to a file.
    cat > /kuryr-cni << EOF
#!/bin/bash -x
envs=(\$(env | grep ^CNI_))
docker exec \${envs[@]/#/--env } -i "${CONTAINERID}" kuryr-cni --config-file /etc/kuryr/kuryr.conf
EOF

    # Copy the script into the designated location
    cp /kuryr-cni "/opt/cni/bin/kuryr-cni"
    chmod +x /opt/cni/bin/kuryr-cni
    cp /opt/kuryr-kubernetes/etc/cni/net.d/* /etc/cni/net.d
}

cleanup
deploy

# Start CNI daemon if required
if [ "$CNI_DAEMON" == "True" ]; then
    kuryr-daemon --config-file /etc/kuryr/kuryr.conf
else
    sleep infinity
fi