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

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

REGISTRY="${GITEA_REGISTRY:-${1:-}}"
IMAGE_PATH="${GITEA_IMAGE_PATH:-${2:-}}"
TAG="${IMAGE_TAG:-${3:-latest}}"
SECOND_TAG="${4:-}"
PLATFORM="${PLATFORM:-linux/amd64}"

if [[ -z "${REGISTRY}" || -z "${IMAGE_PATH}" ]]; then
  cat <<'EOF'
Verwendung:
  ./build-and-push-gitea.sh <registry> <owner/image> [tag] [zweiter-tag]

Beispiel:
  ./build-and-push-gitea.sh git.d-razz.de michael/fixfin V3.3 latest

Einmalige Registry-Anmeldung:
  docker login git.d-razz.de -u michael
EOF
  exit 1
fi

command -v docker >/dev/null 2>&1 || {
  echo "FEHLER: Docker fehlt."
  exit 1
}

docker info >/dev/null 2>&1 || {
  echo "FEHLER: Docker ist für den aktuellen Benutzer nicht erreichbar."
  echo "Teste: docker ps"
  exit 1
}

docker buildx version >/dev/null 2>&1 || {
  echo "FEHLER: Docker Buildx fehlt."
  exit 1
}

FULL_IMAGE="${REGISTRY}/${IMAGE_PATH}:${TAG}"

BUILD_ARGS=(
  --platform "${PLATFORM}"
  --tag "${FULL_IMAGE}"
)

if [[ -n "${SECOND_TAG}" ]]; then
  BUILD_ARGS+=(--tag "${REGISTRY}/${IMAGE_PATH}:${SECOND_TAG}")
fi

BUILD_ARGS+=(--push .)

echo
echo ">>> Build + Push"
echo "Image:    ${FULL_IMAGE}"
if [[ -n "${SECOND_TAG}" ]]; then
  echo "Zusatz:   ${REGISTRY}/${IMAGE_PATH}:${SECOND_TAG}"
fi
echo "Platform: ${PLATFORM}"
echo

cd "${ROOT}"

docker buildx build "${BUILD_ARGS[@]}"

echo
echo "Fertig:"
echo "  ${FULL_IMAGE}"
if [[ -n "${SECOND_TAG}" ]]; then
  echo "  ${REGISTRY}/${IMAGE_PATH}:${SECOND_TAG}"
fi