---
on:
  schedule:
    - cron: '0 4 * * *' # Every day at 4:00am
  push:
    tags:
      - '*'
  release:
    types: [released]

name: Publish tagged images to Docker Hub

jobs:
  docker:
    runs-on: docker
    steps:
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Login to DockerHub
        if: github.event_name != 'schedule'
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Check tag format
        id: check-tag-format
        run: |
          # Escape submitted tag name
          escaped_tag=$(printf "%q" ${{ github.ref_name }})

          # Check if tag has format v<nmumber>.<number>.<number> and set output.match
          # to create a vX.Y (without patch version) Docker tag
          if [[ $escaped_tag =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
            echo ::set-output name=match::true
          else
            echo ::set-output name=match::false
          fi

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v3
        with:
          images: getmeili/meilisearch
          # The lastest tag is only pushed for the official Meilisearch release
          # See https://github.com/docker/metadata-action#latest-tag
          flavor: latest=false
          tags: |
            type=ref,event=tag
            type=semver,pattern=v{{major}}.{{minor}},enable=${{ steps.check-tag-format.outputs.match }}
            type=raw,value=latest,enable=${{ github.event_name == 'release' }}

      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          # We do not push tags for the cron jobs, this is only for test purposes
          push: ${{ github.event_name != 'schedule' }}
          platforms: linux/amd64,linux/arm64
          tags: ${{ steps.meta.outputs.tags }}