name: 'Docker Build and Push'
description: 'Log into Harbor, build and push image'
inputs:
  harbor_user:
    description: 'Harbor Username'
    required: true
  harbor_secret:
    description: 'Harbor Secret'
    required: true
  image_repo:
    description: 'Harbor Image Repository (without tag)'
    required: true
  dockerfile:
    description: 'Path to Dockerfile'
    required: false
    default: './Dockerfile'
  build_context:
    description: 'Docker Build Context'
    required: false
    default: '.'
  docker_build_args:
    description: 'Docker Build Args as multiple lines or single line'
    required: false
    default: ''
  harbor_host:
    description: 'Harbor Host'
    required: false
    default: 'harbor.hclife.co'
outputs:
  image_tag:
    description: 'Generated Image Tag (UTC timestamp)'
    value: ${{ steps.build_push.outputs.image_tag }}
runs:
  using: 'composite'
  steps:
    - name: Build and Push
      id: build_push
      shell: bash
      env:
        DOCKER_BUILDKIT: 1
        HARBOR_USER: ${{ inputs.harbor_user }}
        HARBOR_SECRET: ${{ inputs.harbor_secret }}
        COMMIT_SHA: ${{ github.sha }}
        IMAGE_REPO: ${{ inputs.image_repo }}
        DOCKERFILE: ${{ inputs.dockerfile }}
        BUILD_CONTEXT: ${{ inputs.build_context }}
        DOCKER_BUILD_ARGS: ${{ inputs.docker_build_args }}
        HARBOR_HOST: ${{ inputs.harbor_host }}
      run: |
        set -eu
        IMAGE_TAG="$(date -u +%Y%m%d-%H%M%S)"
        echo "image_tag=$IMAGE_TAG" >> "$GITHUB_OUTPUT"
        
        test -n "$IMAGE_REPO"
        test -n "$DOCKERFILE"
        test -n "$BUILD_CONTEXT"
        test -f "$DOCKERFILE"
        test -d "$BUILD_CONTEXT"
        
        echo "Logging into $HARBOR_HOST..."
        echo "$HARBOR_SECRET" | docker login "$HARBOR_HOST" -u "$HARBOR_USER" --password-stdin
        
        BUILD_ARG_FLAGS=()
        if [ -n "$DOCKER_BUILD_ARGS" ]; then
          while IFS= read -r build_arg_line; do
            [ -n "$build_arg_line" ] || continue
            BUILD_ARG_FLAGS+=("--build-arg" "$build_arg_line")
          done <<< "$DOCKER_BUILD_ARGS"
        fi
        
        echo "Building Image..."
        if [ ${#BUILD_ARG_FLAGS[@]} -gt 0 ]; then
          docker build "${BUILD_ARG_FLAGS[@]}" \
            -t "$IMAGE_REPO:$IMAGE_TAG" \
            -t "$IMAGE_REPO:$COMMIT_SHA" \
            -t "$IMAGE_REPO:latest" \
            -f "$DOCKERFILE" "$BUILD_CONTEXT"
        else
          docker build \
            -t "$IMAGE_REPO:$IMAGE_TAG" \
            -t "$IMAGE_REPO:$COMMIT_SHA" \
            -t "$IMAGE_REPO:latest" \
            -f "$DOCKERFILE" "$BUILD_CONTEXT"
        fi
        
        echo "Pushing Image..."
        docker push "$IMAGE_REPO:$IMAGE_TAG"
        docker push "$IMAGE_REPO:$COMMIT_SHA"
        docker push "$IMAGE_REPO:latest"