name: Release Docker images

on:
  workflow_dispatch:
  push:
    branches:
      - main
    tags:
      - 'v[0-9].*[0-9].*[0-9]?(rc[0-9])'

env:
  DOCKER_REPO_NAME: deepset/haystack

jobs:
  build-and-push:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_HUB_USER }}
          password: ${{ secrets.DOCKER_HUB_TOKEN }}

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: $DOCKER_REPO_NAME

      - name: Build base images
        uses: docker/bake-action@v2
        env:
          IMAGE_TAG_SUFFIX: ${{ steps.meta.outputs.version }}
        with:
          workdir: docker
          targets: base
          push: true

      - name: Build api images
        uses: docker/bake-action@v2
        env:
          IMAGE_TAG_SUFFIX: ${{ steps.meta.outputs.version }}
          BASE_IMAGE_TAG_SUFFIX: ${{ steps.meta.outputs.version }}
        with:
          workdir: docker
          targets: api
          push: true

      - name: Get latest version of Haystack
        id: latest-version
        uses: pozetroninc/github-action-get-latest-release@master
        if: startsWith(github.ref, 'refs/tags/')
        with:
          repository: ${{ github.repository }}
          excludes: prerelease, draft

      - name: Compare current version with latest
        uses: madhead/semver-utils@latest
        id: version
        if: startsWith(github.ref, 'refs/tags/')
        with:
          # Version being built
          version: ${{  github.ref_name }}
          # Compare to latest
          compare-to: ${{ steps.latest-version.outputs.release }}

      - name: Use latest
        if: steps.version.outputs.comparison-result == '>'
        run: |
          echo ${{ steps.version.outputs.comparison-result }};
          echo ${{ steps.latest-version.outputs.release }};

      # This step should only run when we release a new minor, so
      # that we can tag the most recent image without the version number.
      # For example, if the previous step builds `deepset/haystack:cpu-1.8.0`,
      # this builds `deepset/haystack:cpu`
      - name: Build api images no version in tag
        uses: docker/bake-action@v2
        if: steps.version.outputs.comparison-result == '>'
        env:
          IMAGE_TAG_SUFFIX: ${{ steps.meta.outputs.version }}
          BASE_IMAGE_TAG_SUFFIX: ${{ steps.meta.outputs.version }}
        with:
          workdir: docker
          targets: api-latest
          push: true