name: "Build, Test & Deploy"

on:
  push:
    branches: [ "master", "stable" ]

jobs:
  build:
    runs-on: ubuntu-latest
    outputs:
      imagetag: ${{ steps.prep.outputs.imagetag }}
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          submodules: recursive
      - name: Prepare
        id: prep
        run: |
          DOCKER_IMAGE=docker.io/mailserver/testing
          TAGS="${DOCKER_IMAGE}:${GITHUB_SHA::8},${DOCKER_IMAGE}:latest"
          echo ::set-output name=tags::${TAGS}
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1
        id: buildx
      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-
      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
      - name: Build image locally
        uses: docker/build-push-action@v2
        with:
          builder: ${{ steps.buildx.outputs.name }}
          context: .
          file: ./Dockerfile
          build-args: |
            VCS_REF=${{ github.sha }}
            VCS_VER=${{ github.ref }}
          platforms: linux/amd64,linux/arm/v7,linux/arm64
          pull: true
          push: true
          tags: ${{ steps.prep.outputs.tags }}
          cache-to: type=local,dest=/tmp/.buildx-cache

  test:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          submodules: recursive
      - name: run test suite
        run: |
          NAME=docker.io/mailserver/testing:${GITHUB_SHA::8} bash -c 'make generate-accounts tests'
        env:
          CI: true

  publish:
    needs: test
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          submodules: recursive
      - name: Prepare
        id: prep
        run: |
          DOCKER_IMAGE=docker.io/mailserver/docker-mailserver
          VERSION=latest
          [[ $GITHUB_REF == refs/tags/* ]] && VERSION=${GITHUB_REF#refs/tags/v}
          TAGS="${DOCKER_IMAGE}:${VERSION}"
          [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]] && TAGS="$TAGS,${DOCKER_IMAGE}:latest"
          echo ::set-output name=tags::${TAGS}
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1
        id: buildx
      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-
      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
      - name: Build image locally
        uses: docker/build-push-action@v2
        with:
          builder: ${{ steps.buildx.outputs.name }}
          context: .
          file: ./Dockerfile
          build-args: |
            VCS_REF=${{ github.sha }}
            VCS_VER=${{ github.ref }}
          platforms: linux/amd64,linux/arm/v7,linux/arm64
          pull: true
          push: true
          tags: ${{ steps.prep.outputs.tags }}
          cache-from: type=local,src=/tmp/.buildx-cache