#!/usr/bin/env bash
#
# Build the Great Bear image and push it to the private registry.
#
# Reads registry credentials from the environment or from ./.env
# (REGISTRY_USER, REGISTRY_PASSWORD). Optional overrides: REGISTRY,
# IMAGE_NAME, PLATFORM.
#
set -euo pipefail
cd "$(dirname "$0")"

# shellcheck disable=SC1091
[ -f .env ] && set -a && . ./.env && set +a

REGISTRY="${REGISTRY:-registry.tanshu.com}"
IMAGE_NAME="${IMAGE_NAME:-tanshu/greatbear}"
REGISTRY_USER="${REGISTRY_USER:?REGISTRY_USER not set (define it in .env or the environment)}"
REGISTRY_PASSWORD="${REGISTRY_PASSWORD:?REGISTRY_PASSWORD not set (define it in .env or the environment)}"
PLATFORM="${PLATFORM:-linux/amd64}"

IMAGE="$REGISTRY/$IMAGE_NAME"
VERSION="$(git rev-parse --short HEAD 2>/dev/null || date +%Y%m%d%H%M%S)"

echo "==> Building $IMAGE:$VERSION (and :latest) for $PLATFORM"
docker build --platform "$PLATFORM" \
  -t "$IMAGE:latest" \
  -t "$IMAGE:$VERSION" \
  .

echo "==> Logging in to $REGISTRY"
printf '%s' "$REGISTRY_PASSWORD" | docker login "$REGISTRY" --username "$REGISTRY_USER" --password-stdin

echo "==> Pushing $IMAGE:latest"
docker push "$IMAGE:latest"
echo "==> Pushing $IMAGE:$VERSION"
docker push "$IMAGE:$VERSION"

echo
echo "Done. Deploy with:"
echo "  cd ansible && ansible-playbook -i inventory/hosts.yml site.yml"