#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"

REGISTRY="${REGISTRY:-ghcr.io/gyj2032-byte}"
IMAGE_PREFIX="${IMAGE_PREFIX:-stylist}"
PLATFORM="${PLATFORM:-linux/amd64}"
NODE_IMAGE="${NODE_IMAGE:-node:20-alpine}"
NGINX_IMAGE="${NGINX_IMAGE:-nginx:1.27-alpine}"

if [ "$#" -gt 1 ]; then
  echo "Usage: $0 [tag]" >&2
  exit 2
fi

if [ "$#" -eq 1 ]; then
  TAG="$1"
else
  TAG="$(git -C "$ROOT_DIR" rev-parse --short HEAD 2>/dev/null || date +%Y%m%d%H%M%S)"
fi

BACKEND_IMAGE="$REGISTRY/${IMAGE_PREFIX}-backend"
FRONTEND_IMAGE="$REGISTRY/${IMAGE_PREFIX}-frontend"

if ! command -v docker >/dev/null 2>&1; then
  echo "docker is required but was not found in PATH." >&2
  exit 1
fi

if ! docker buildx version >/dev/null 2>&1; then
  echo "docker buildx is required but is not available." >&2
  exit 1
fi

echo "Building and pushing Linux images:"
echo "  $BACKEND_IMAGE:$TAG"
echo "  $BACKEND_IMAGE:latest"
echo "  $FRONTEND_IMAGE:$TAG"
echo "  $FRONTEND_IMAGE:latest"
echo "Platform: $PLATFORM"

buildx_build() {
  if [ -n "${BUILDER:-}" ]; then
    docker buildx build --builder "$BUILDER" "$@"
  else
    docker buildx build "$@"
  fi
}

buildx_build \
  --platform "$PLATFORM" \
  --build-arg NODE_IMAGE="$NODE_IMAGE" \
  -f "$ROOT_DIR/docker/backend.Dockerfile" \
  -t "$BACKEND_IMAGE:$TAG" \
  -t "$BACKEND_IMAGE:latest" \
  --push "$ROOT_DIR"

buildx_build \
  --platform "$PLATFORM" \
  --build-arg NODE_IMAGE="$NODE_IMAGE" \
  --build-arg NGINX_IMAGE="$NGINX_IMAGE" \
  -f "$ROOT_DIR/docker/frontend.Dockerfile" \
  -t "$FRONTEND_IMAGE:$TAG" \
  -t "$FRONTEND_IMAGE:latest" \
  --push "$ROOT_DIR"

cat <<EOF

Pushed:
  $BACKEND_IMAGE:$TAG
  $BACKEND_IMAGE:latest
  $FRONTEND_IMAGE:$TAG
  $FRONTEND_IMAGE:latest
EOF