#!/usr/bin/env bash

set -euo pipefail

DOCKER_REPO="${DOCKER_REPO:-DOCKER_REPO_REPLACED_BY_PACKER}"

if (( $# != 1 )); then
    echo "usage: ssh deploy@riju COMMIT-SHA" >&2
    exit 1
fi

commit="$1"

if [[ "$(echo -n "${commit}" | wc -c)" != 40 ]]; then
    echo "riju-deploy: invalid commit SHA: ${commit}" >&2
    exit 1
fi

image="${DOCKER_REPO}:app-${commit}"

echo "Pull image to be deployed..."
docker pull "${image}"

echo "Start new image in test container..." >&2
CONTAINER_NAME=riju-test IMAGE_NAME="${image}" DETACH=1 \
              PORT_MAPPING="-p 127.0.0.1:6119:6119" riju

echo "Wait for web server to come up..." >&2
sleep 10

echo "Test web server health..." >&2
curl -fsSL http://localhost:6119 | head -n15

echo "Tear down test container..." >&2
docker stop riju-test

echo "Retag production image..." >&2
docker tag "${image}" riju:app

echo "Restart production server..." >&2
systemctl restart riju