#!/bin/bash

if [ -z "$DEPLOYMENT_DNS_SUFFIX" ]; then
  echo "DEPLOYMENT_DNS_SUFFIX is required."
  exit 2
fi

if [ -z "$DEPLOYMENT_RECORD_NAMESPACE" ]; then
  echo "DEPLOYMENT_RECORD_NAMESPACE is required."
  exit 2
fi

if [ -z "$IMAGE_REGISTRY" ]; then
  echo "IMAGE_REGISTRY is required."
  exit 2
fi

if [ ! -f "/etc/config/laconic.yml" ]; then
  echo "/etc/config/laconic.yml is required."
  exit 2
fi

if [ ! -f "/etc/config/kube.yml" ]; then
  echo "/etc/config/kube.yml is required."
  exit 2
fi

if [ ! -z "$IMAGE_REGISTRY_CREDS" ]; then
  docker login --password "$IMAGE_REGISTRY_CREDS" --username ${IMAGE_REGISTRY_USER:-ANY} $IMAGE_REGISTRY
fi

function is_privileged {
  ip link add dummy0 type dummy >/dev/null
  if [[ $? -eq 0 ]]; then
    echo "true"
    ip link delete dummy0 >/dev/null
  else
    echo "false"
  fi
}

if [[ "true" == "`is_privileged`" ]]; then
  echo "Using 'overlay' storage driver."
else
  echo "Using 'vfs' storage driver."
  sed -i 's/"overlay"/"vfs"/g' /etc/containers/storage.conf
fi

if [ ! -d "/srv/deployments/webapps" ]; then
  mkdir -p /srv/deployments/webapps
fi

if [ "$CLEAN_STATE" == "true" ]; then
  echo "Removing existing state..."
  rm -f /srv/deployments//webapps/*.state
fi

echo "Starting API"
cd /app/
yarn start &

while true; do
  echo "=============================================================="

  echo "########### UNDEPLOY ############"
  laconic-so undeploy-webapp-from-registry \
    --laconic-config /etc/config/laconic.yml \
    --deployment-parent-dir /srv/deployments/webapps \
    --delete-names \
    --delete-volumes \
    --state-file /srv/deployments/webapps/autoremove.state \
    --discover

  echo "############ DEPLOY #############"
  laconic-so deploy-webapp-from-registry \
    --kube-config /etc/config/kube.yml \
    --laconic-config /etc/config/laconic.yml \
    --image-registry ${IMAGE_REGISTRY} \
    --deployment-parent-dir /srv/deployments/webapps \
    --dns-suffix ${DEPLOYMENT_DNS_SUFFIX} \
    --record-namespace-dns crn://${DEPLOYMENT_RECORD_NAMESPACE}/dns \
    --record-namespace-deployments crn://${DEPLOYMENT_RECORD_NAMESPACE}/deployments \
    --state-file /srv/deployments/webapps/autodeploy.state \
    --discover

  # Cleanup any build leftovers
  podman system prune --all --force
  sleep 15
done