ci.yml

name: CI

on:
  workflow_dispatch:
  push:
    branches:
      - master
    paths-ignore:
      - "*.md"
      - "LICENSE"

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

jobs:
  fetch:
    name: Fetch latest NextDNS CLI release
    runs-on: [self-hosted]

    steps:
      - name: Checkout
        uses: actions/checkout@master
        with:
          fetch-depth: 0

      - name: Fetch information from GitHub API
        id: release
        run: |
          NEXTDNS_TAG=$(curl -svL https://api.github.com/repos/nextdns/nextdns/releases/latest | jq -r ".tag_name")
          RELEASE_TAG=$(git describe --tags $(git rev-list --tags --max-count=1) || true)
          RELEASE_NUM=$(echo "$RELEASE_TAG" | rev | cut -d "-" -f1 | rev)
          if [[ -z "$RELEASE_NUM" || "$RELEASE_NUM" = "$RELEASE_TAG" ]]; then
            RELEASE_NUM="-1"
          fi

          if [[ "$(echo "$RELEASE_TAG" | rev | cut -d "-" -f2- | rev)" == "$NEXTDNS_TAG" ]]; then
            exit 1
            #RELEASE_NUM=$(echo "$RELEASE_NUM+1" | bc)
          else
            RELEASE_NUM="0"
          fi

          echo "::set-output name=nextdns_tag::$NEXTDNS_TAG"
          echo "::set-output name=release_tag::$RELEASE_TAG"
          echo "::set-output name=nextdns_ver::$(echo "$NEXTDNS_TAG" | sed "s/^v//")"
          echo "::set-output name=docker_ver::$(echo "$RELEASE_TAG" | sed "s/^v//" | rev | cut -d "-" -f2- | rev)"
          echo "::set-output name=release_new::$NEXTDNS_TAG-$RELEASE_NUM"

      - name: Repo keep-alive
        uses: gautamkrishnar/keepalive-workflow@master
        continue-on-error: true
        with:
          commit_message: repo keepalive [ci skip]
          committer_username: JeDa
          committer_email: "bot@jeda.im"

    outputs:
      nextdns_tag: ${{ steps.release.outputs.nextdns_tag }}
      release_tag: ${{ steps.release.outputs.release_tag }}
      nextdns_ver: ${{ steps.release.outputs.nextdns_ver }}
      docker_ver: ${{ steps.release.outputs.docker_ver }}
      release_new: ${{ steps.release.outputs.release_new }}

  build:
    name: Build Docker images
    runs-on: ubuntu-latest
    needs: fetch
    if: needs.fetch.outputs.docker_ver != needs.fetch.outputs.nextdns_ver || github.ref == 'refs/heads/master'

    env:
      # This should be all the platforms both NextDNS and Alpine for Docker support in common.
      ARCH_LIST: linux/amd64,linux/arm64,

    steps:
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3.0.0
        with:
          platforms: ${{ env.ARCH_LIST }}

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3.1.0

      - name: Login to Docker Hub
        uses: docker/login-action@v3.0.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and export Docker image
        uses: docker/build-push-action@v5.1.0
        with:
          builder: ${{ steps.buildx.outputs.name }}
          build-args: |
            NEXTDNS_VERSION=${{ needs.fetch.outputs.nextdns_ver }}
          tags: ${{ env.IMAGE_NAME }}:latest

      - name: Test Image
        run: |
          docker run --rm ${{ env.IMAGE_NAME }}:latest

      - name: Push Docker image
        uses: docker/build-push-action@v5.1.0
        with:
          platforms: ${{ env.ARCH_LIST }}
          push: true
          builder: ${{ steps.buildx.outputs.name }}
          build-args: |
            NEXTDNS_VERSION=${{ needs.fetch.outputs.nextdns_ver }}
          tags: ${{ env.IMAGE_NAME }}:latest,${{ env.IMAGE_NAME }}:${{ needs.fetch.outputs.nextdns_ver }}

  tag:
    name: Publish version tag
    runs-on: [self-hosted]
    needs: [fetch, build]

    steps:
      - name: Publish GitHub release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          NEXTDNS_TAG: ${{ needs.fetch.outputs.nextdns_tag }}
          NEXTDNS_VER: ${{ needs.fetch.outputs.nextdns_ver }}
          RELEASE_NEW: ${{ needs.fetch.outputs.release_new }}
        with:
          tag_name: ${{ env.RELEASE_NEW }}
          release_name: ${{ env.RELEASE_NEW }}
          body: |
            This is an automated deployment of [NextDNS CLI ${{ env.NEXTDNS_TAG }}](https://github.com/nextdns/nextdns/releases/${{ env.NEXTDNS_TAG }}).

            You should be able to fetch this image using Docker/podman.
            ```sh
            docker pull ${{ env.IMAGE_NAME }}:latest  # always up-to-date
            docker pull ${{ env.IMAGE_NAME }}:${{ env.NEXTDNS_VER }}  # stick to this NextDNS release
            ```