#!/bin/bash -ex

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

function deploy() {
    POD_NAMESPACE=$(</var/run/secrets/kubernetes.io/serviceaccount/namespace)

    # Write the script to a file.
    cat > /kuryr-cni << EOF
#!/bin/bash -x

finder="
import json
import sys

containers=json.load(sys.stdin)
for container in containers:
    if ('Labels' in container and
            container['Labels'].get('io.kubernetes.pod.name') == '${KURYR_CNI_POD_NAME}' and
            container['Labels'].get('io.kubernetes.pod.namespace') == '${POD_NAMESPACE}' and
            container['Labels'].get('io.kubernetes.docker.type') == 'container'):
        print(container['Id'])
        break
"

# TODO(dulek): We might want to fetch socket path from config.
CONTAINERID=\`curl --unix-socket /var/run/docker.sock http://v1.24/containers/json 2> /dev/null | python -c "\${finder}"\`

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
    exec kuryr-daemon --config-file /etc/kuryr/kuryr.conf
else
    exec sleep infinity
fi