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

ROOT="$(cd "$(dirname "$0")" && pwd)"

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

if [[ -z "$REGISTRY" || -z "$IMAGE_PATH" ]]; then
  cat <<USAGE
Verwendung:
  $0 <registry> <owner/image> [tag]

Beispiel:
  $0 git.example.de meinuser/fixfin latest

Alternativ per Umgebungsvariablen:
  GITEA_REGISTRY=git.example.de \\
  GITEA_IMAGE_PATH=meinuser/fixfin \\
  IMAGE_TAG=latest \\
  $0

Vor dem ersten Push anmelden:
  sudo docker login <registry>
USAGE
  exit 1
fi

command -v docker >/dev/null 2>&1 || { echo "Docker fehlt."; exit 1; }
docker buildx version >/dev/null 2>&1 || { echo "Docker Buildx fehlt."; exit 1; }

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

echo ">>> Build + Push"
echo "Image:    ${FULL_IMAGE}"
echo "Platform: ${PLATFORM}"
echo

cd "$ROOT"
docker buildx build \
  --platform "$PLATFORM" \
  --tag "$FULL_IMAGE" \
  --push \
  .

echo
echo "Fertig: ${FULL_IMAGE}"