name: Docker Build and Push
description: Build a Docker image and push it to the Gitea container registry
inputs:
  REGISTRY:
    description: "Container registry hostname"
    default: "gitea.pixelparasol.com"
  REGISTRY_USERNAME:
    description: "Registry login username"
    default: "deac"
  REGISTRY_TOKEN:
    description: "Registry login token or password"
    required: true
  IMAGE_PATH:
    description: "Full registry image path (e.g. gitea.pixelparasol.com/stat-tackler/stat-tackler-api)"
    required: true
  IMAGE_TAG:
    description: "Tag to apply in addition to latest (e.g. stage-<sha>)"
    required: true
  PLATFORMS:
    description: "Comma-separated buildx platform list"
    default: "linux/amd64,linux/arm/v7,linux/arm64"
  ARTIFACT_NAME:
    description: "Name of the build artifact to download"
    default: "dist"
  ARTIFACT_PATH:
    description: "Destination path for the downloaded artifact"
    default: "dist"
  TAG_LATEST:
    description: "Also tag and push the image as latest"
    default: "false"
  TAG_PREFIX:
    description: "Optional prefix to prepend to IMAGE_TAG (e.g. 'dev' produces 'dev-<tag>'). Does not affect the latest tag."
    default: ""
  WORKING_DIRECTORY:
    description: "Working directory for the Docker build"
    default: "."

runs:
  using: composite
  steps:
    - name: Login to Gitea Container Registry
      uses: docker/login-action@v3
      with:
        registry: ${{ inputs.REGISTRY }}
        username: ${{ inputs.REGISTRY_USERNAME }}
        password: ${{ inputs.REGISTRY_TOKEN }}

    - name: Download Build Artifact
      uses: actions/download-artifact@v3
      with:
        name: ${{ inputs.ARTIFACT_NAME }}
        path: ${{ inputs.ARTIFACT_PATH }}

    - name: Docker Build and Push
      shell: sh
      run: |
        TAG="${{ inputs.IMAGE_TAG }}"
        if [ -n "${{ inputs.TAG_PREFIX }}" ]; then
          TAG="${{ inputs.TAG_PREFIX }}-${TAG}"
        fi
        TAGS="-t ${{ inputs.IMAGE_PATH }}:${TAG}"
        if [ "${{ inputs.TAG_LATEST }}" = "true" ]; then
          TAGS="$TAGS -t ${{ inputs.IMAGE_PATH }}:latest"
        fi
        docker buildx build -f ${{ inputs.WORKING_DIRECTORY }}/Dockerfile ${{ inputs.WORKING_DIRECTORY }} \
          --platform ${{ inputs.PLATFORMS }} \
          --push \
          $TAGS