name: Build & Push to Docker Hub

on:
  push:
    branches: [main]
    tags: ["v*"]
  pull_request:
    branches: [main]

env:
  REGISTRY: docker.io
  IMAGE_NAME: ${{ vars.DOCKERHUB_USERNAME }}/email-sync-oauth2

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

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

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

      - name: Log in to Docker Hub
        if: github.event_name != "pull_request"
        uses: docker/login-action@v3
        with:
          username: ${{ vars.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          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: Run healthcheck test
        if: github.event_name == 'pull_request'
        run: |
          set -euo pipefail
          trap 'docker compose down -v' EXIT
          docker compose config --quiet
          docker compose up -d
          for _ in $(seq 1 18); do
            status="$(docker inspect --format='{{.State.Health.Status}}' email-sync-oauth2)"
            if [ "$status" = "healthy" ]; then
              docker compose exec -T imapsync bash -n /sync.sh
              exit 0
            fi
            sleep 10
          done
          docker compose logs
          echo "Container did not become healthy" >&2
          exit 1