name: Build and Push Image

on:
  workflow_run:
    workflows: ["CI"]
    types:
      - completed
    branches:
      - main
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    permissions:
      contents: read
      packages: write
      id-token: write
      attestations: write
    if: >-
      ${{
        github.event_name == 'workflow_dispatch' ||
        (
          github.event_name == 'workflow_run' &&
          github.event.workflow_run.conclusion == 'success' &&
          github.event.workflow_run.event == 'push' &&
          github.event.workflow_run.head_branch == 'main' &&
          github.event.workflow_run.head_repository.full_name == github.repository
        )
      }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v7

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v4
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v6
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=sha
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Generate artifact attestation
        if: github.event_name != 'pull_request'
        uses: actions/attest-build-provenance@v4
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
          subject-digest: ${{ steps.build-and-push.outputs.digest }}
          push-to-registry: true