#!/usr/bin/env bash
# filepath: e:\infoalloggi-monorepo\build_and_push_ghcr.sh
set -euo pipefail

# Build and push multiple Docker images to a registry (GHCR or self-hosted)
# Usage:
#   ./build_and_push_ghcr.sh [TAG]
# Environment variables (defaults shown):
#   TAG (arg or env, default: latest)
#   IMAGE_REGISTRY (default: ghcr.io)
#   OWNER (default: marcopedone)
#   SERVICES (space-separated list, default: backend web db)
#   USERNAME (optional): registry username for docker login
#   TOKEN (optional): registry password/token for docker login
#
# The script expects subfolders for services when building from source:
#  - db -> ./apps/db
#  - backend -> ./apps/backend
#  - web -> ./apps/infoalloggi

: "${TAG:?TAG is required}"
: "${IMAGE_REGISTRY:?IMAGE_REGISTRY is required}"
: "${PREFIX:?PREFIX is required}"
: "${OWNER:?OWNER is required}"
: "${SERVICES:?SERVICES is required}"
: "${USERNAME:?USERNAME is required}"
: "${TOKEN:?TOKEN is required}"
: "${ENV_FILE:?ENV_FILE is required}"

set -x

# Optional login
if [[ -n "${USERNAME}" && -n "${TOKEN}" ]]; then
  echo "Logging into ${IMAGE_REGISTRY} as ${USERNAME}..."
  echo "${TOKEN}" | docker login "${IMAGE_REGISTRY}" -u "${USERNAME}" --password-stdin
else
  echo "No credentials provided; assuming you're already logged into ${IMAGE_REGISTRY} or using a credential helper."
fi

# Get last git commit info (once for all images)
GIT_COMMIT_ID=$(git rev-parse --short HEAD)
GIT_COMMIT_MSG=$(git log -1 --pretty=%B | tr -d '\n')
DESCRIPTION="Commit: ${GIT_COMMIT_ID} - ${GIT_COMMIT_MSG}"

# Array to store built images
declare -a BUILT_IMAGES=()

echo "================================"
echo "PHASE 1: Building all images"
echo "================================"

for svc in ${SERVICES}; do
  case "${svc}" in
  db)
    ctx="./apps/db"
    dockerfile="Dockerfile"
    ;;
  backend)
    ctx="./apps/backend"
    dockerfile="Dockerfile"
    ;;
  web)
    ctx="./apps/infoalloggi"
    dockerfile="Dockerfile"
    ;;
  *)
    echo "Unknown service: ${svc}, skipping..."
    continue
    ;;
  esac

  IMAGE="${IMAGE_REGISTRY}/${OWNER}/${PREFIX}-${svc}:${TAG}"
  echo ""
  echo "Building ${PREFIX}-${svc} -> ${IMAGE} (context: ${ctx})"
  
  docker build \
    --build-arg ENV_FILE="${ENV_FILE}" \
    -t "${IMAGE}" \
    --label "org.opencontainers.image.description=${DESCRIPTION}" \
    -f "$ctx/$dockerfile" \
    "$ctx"
  
  # Store the image name for later pushing
  BUILT_IMAGES+=("${IMAGE}")
  echo "✓ Built ${IMAGE}"
done

echo ""
echo "================================"
echo "PHASE 2: Pushing all images"
echo "================================"

for IMAGE in "${BUILT_IMAGES[@]}"; do
  echo ""
  echo "Pushing ${IMAGE}"
  docker push "${IMAGE}"
  echo "✓ Pushed ${IMAGE}"
done

echo ""
echo "================================"
echo "All done!"
echo "Built and pushed ${#BUILT_IMAGES[@]} images with tag ${TAG}"
echo "Images:"
for IMAGE in "${BUILT_IMAGES[@]}"; do
  echo "  - ${IMAGE}"
done
echo "================================"