name: Build and Push Docker Images

on:
  workflow_dispatch:
  push:
    branches: [ main ]
    paths:
      - 'caddy-*/**'
      - '.github/workflows/**'

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        variant:
          - name: 'cloudflare'
            dockerfile: 'caddy-cloudflare/Dockerfile'
            context: 'caddy-cloudflare'
          - name: 'cloudflare-ddns'
            dockerfile: 'caddy-cloudflare-ddns/Dockerfile'
            context: 'caddy-cloudflare-ddns'
          - name: 'cloudflare-ddns-crowdsec'
            dockerfile: 'caddy-cloudflare-ddns-crowdsec/Dockerfile'
            context: 'caddy-cloudflare-ddns-crowdsec'
      fail-fast: false

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

      - name: Parse Caddy version
        id: version
        run: |
          VERSION=$(grep -oP '(?<=FROM caddy:)[0-9]+\.[0-9]+\.[0-9]+' ${{ matrix.variant.dockerfile }} | head -n 1)
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "VERSION=$VERSION" >> $GITHUB_ENV

      - 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.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: |
            ghcr.io/${{ github.repository }}/caddy-${{ matrix.variant.name }}
          tags: |
            type=raw,value=latest
            type=ref,event=branch
            type=ref,event=tag
            type=sha,format=long,prefix=sha-

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: ${{ matrix.variant.context }}
          file: ${{ matrix.variant.dockerfile }}
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          # cache-from: type=gha
          # cache-to: type=ghac,mode=max