name: deploy

on:
  push:
    branches:
      - "main"

env:
  REGISTRY_HOST: ghcr.io
  BRANCH_NAME: ${{ github.head_ref || github.ref_name }}

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - uses: actions/checkout@v4

      - name: Container image name (GHCR is lowercase)
        run: |
          echo "IMAGE_NAME=${REGISTRY_HOST}/$(echo "${GITHUB_REPOSITORY}" | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_ENV"

      - uses: docker/setup-buildx-action@v3

      - name: Log-in to registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY_HOST }}
          username: ${{ secrets.REGISTRY_USER }}
          password: ${{ secrets.REGISTRY_PASS }}

      - name: Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
            type=sha,prefix=sha-
            type=semver,pattern={{version}}
            type=semver,pattern=v{{version}}

      - 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