name: Build and Push Docker Image

on:
  release:
    types:
      - published
      - released

  workflow_dispatch:
    inputs:
      tag:
        description: "Docker image version (e.g., v1.2.3):"
        required: true
      add_latest_tag:
        description: "Set to latest"
        type: boolean
        default: false

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Set repository and image name to lowercase
        env:
          IMAGE_NAME: "${{ github.repository }}"
        run: |
          echo "IMAGE_NAME=${IMAGE_NAME,,}" >>${GITHUB_ENV}
          echo "FULL_IMAGE_NAME=ghcr.io/${IMAGE_NAME,,}" >>${GITHUB_ENV}

      - name: Validate and extract version tag
        run: |
          SOURCE_TAG="${{ github.event.inputs.tag }}"
          if [[ -z "$SOURCE_TAG" ]]; then
            SOURCE_TAG="${{ github.ref_name }}"
          fi

          if [[ -z "$SOURCE_TAG" ]]; then
            echo "Error: Could not determine a valid tag source. Input tag and context tag (github.ref_name) are both empty."
            exit 1
          fi

          if [[ "$SOURCE_TAG" != v* ]]; then
            echo "Error: Tag '$SOURCE_TAG' must start with 'v'. Aborting."
            exit 1
          fi

          APP_VERSION=${SOURCE_TAG#v}
          if [[ -z "$APP_VERSION" ]]; then
            echo "Error: Tag '$SOURCE_TAG' starts with 'v' but has no version number following it."
            exit 1
          fi

          echo "Application version: $APP_VERSION"
          echo "APP_VERSION=$APP_VERSION" >>${GITHUB_ENV}

          LATEST=false
          if [[ "${{ github.event_name }}" == "release" && "${{ github.event.release.prerelease }}" == "false" ]] || [[ "${{ github.event_name }}" == "workflow_dispatch" && "${{ github.event.inputs.add_latest_tag }}" == "true" ]]; then
            LATEST=true
          fi

          echo "Latest: $LATEST"
          echo "LATEST=$LATEST" >>${GITHUB_ENV}

      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build Docker image (main architectures)
        id: build_main_arches
        uses: docker/build-push-action@v6
        with:
          context: .
          file: .github/docker/Dockerfile
          platforms: |
            linux/amd64
            linux/arm/v7
            linux/arm64/v8
            linux/ppc64le
            linux/s390x
          provenance: false
          outputs: type=image,name=${{ env.FULL_IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true

      - name: Build Docker image (additional architectures)
        id: build_additional_arches
        uses: docker/build-push-action@v6
        with:
          context: .
          file: .github/docker/Dockerfile.usa
          platforms: |
            linux/386
            linux/arm/v6
            linux/riscv64
            linux/loong64
          provenance: false
          outputs: type=image,name=${{ env.FULL_IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true

      - name: Create manifest list and push
        run: |
          echo "Creating multi-arch manifest with version tag: ${{ env.FULL_IMAGE_NAME }}:${{ env.APP_VERSION }}"
          docker buildx imagetools create \
            --tag ${{ env.FULL_IMAGE_NAME }}:${{ env.APP_VERSION }} \
            ${{ env.FULL_IMAGE_NAME }}@${{ steps.build_main_arches.outputs.digest }} \
            ${{ env.FULL_IMAGE_NAME }}@${{ steps.build_additional_arches.outputs.digest }}

          if [[ "${{ env.LATEST }}" == "true" ]]; then
            echo "Adding 'latest' tag to manifest: ${{ env.FULL_IMAGE_NAME }}:latest"
            docker buildx imagetools create \
            --tag ${{ env.FULL_IMAGE_NAME }}:latest \
            ${{ env.FULL_IMAGE_NAME }}:${{ env.APP_VERSION }}
          fi

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.FULL_IMAGE_NAME }}:${{ env.APP_VERSION }}

          if [[ "${{ env.LATEST }}" == "true" ]]; then
            docker buildx imagetools inspect ${{ env.FULL_IMAGE_NAME }}:latest
          fi