name: Build and Push

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master
  merge_group:
  workflow_dispatch:

# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-only-cancel-in-progress-jobs-or-runs-for-the-current-workflow
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}

env:
  HUB_IMAGE: jakejarvis/hugo-extended
  GHCR_IMAGE: ghcr.io/jakejarvis/hugo-extended

jobs:
  docker:
    runs-on: ubuntu-latest
    if: "!contains(github.event.head_commit.message, '[skip ci]')"
    steps:
      - name: Checkout
        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
        with:
          fetch-depth: 0

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

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

      - name: Login to DockerHub
        if: ${{ github.ref == 'refs/heads/master' }}
        uses: docker/login-action@v3
        with:
          username: jakejarvis
          password: ${{ secrets.DOCKER_HUB_TOKEN }}

      - name: Login to GitHub Container Registry
        if: ${{ github.ref == 'refs/heads/master' }}
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GHCR_PAT }}

      - name: Cache Docker layers
        uses: actions/cache@v3
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Parse Hugo version
        id: parse_version
        run: |
          HUGO_VERSION="$(grep -oP '(?<=^ARG HUGO_VERSION=).+$' Dockerfile)"
          echo "HUGO_VERSION=$HUGO_VERSION" >> $GITHUB_OUTPUT

      - name: Build and push
        id: build
        uses: docker/build-push-action@v5
        with:
          builder: ${{ steps.buildx.outputs.name }}
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          push: ${{ github.ref == 'refs/heads/master' }}
          tags: "${{ env.HUB_IMAGE }}:latest,${{ env.GHCR_IMAGE }}:latest,${{ env.HUB_IMAGE }}:${{ steps.parse_version.outputs.HUGO_VERSION }},${{ env.GHCR_IMAGE }}:${{ steps.parse_version.outputs.HUGO_VERSION }}"
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache

      - name: Image digest
        run: echo ${{ steps.build.outputs.digest }}

      - name: Update hub description
        uses: peter-evans/dockerhub-description@v3
        if: ${{ github.ref == 'refs/heads/master' }}
        with:
          username: jakejarvis
          password: ${{ secrets.DOCKER_HUB_TOKEN }}
          repository: ${{ env.HUB_IMAGE }}
          short-description: "✏️ Hugo Extended for x64 and ARM64 with PostCSS, Babel, Pandoc, and more baked in."
          readme-filepath: ./README.md
          enable-url-completion: true