name: "Trigger Release"

# Only a single job with this concurrency can run at any given time
concurrency: release

on:
  # This runs on a schedule by default:
  schedule:
    # https://crontab.guru/#6_17_*_*_2
    # Every Tuesday at 5:06pm UTC & 9:06am US West Coast.
    # GitHub Actions defaults to UTC:
    - cron: '6 17 * * 2'
    # There is high load on GitHub Actions at the top of the hour:
    #
    #     Note: The schedule event can be delayed during periods of high loads of
    #     GitHub Actions workflow runs. High load times include the start of every
    #     hour. To decrease the chance of delay, schedule your workflow to run at a
    #     different time of the hour.
    #
    # So we run these at a special time, 9:06. Ask @gerhard about it.

  # And it also supports manual triggering:
  workflow_dispatch:
    inputs:
      tag:
        description: 'Custom tag (default bumps last tag) DO NOT prefix with v'
        required: false

jobs:
  bump_version-tag-push:
    name: "Bump version, tag & push"
    runs-on: ubuntu-latest
    steps:
      - name: "Check out"
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: "Ensure that all other checks have succeeded"
        # https://github.com/lewagon/wait-on-check-action
        uses: lewagon/wait-on-check-action@v1.0.0
        with:
          ref: ${{ github.ref }}
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          wait-interval: 10 # polls the GitHub API every 10 every seconds
          running-workflow-name: "Bump version, tag & push"
          allowed-conclusions: success

      - name: "Tag so that a new release is triggered"
        id: tag_version
        # https://github.com/mathieudutour/github-tag-action
        uses: mathieudutour/github-tag-action@v6.0
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          fetch_all_tags: true
          custom_tag: "${{ github.event.inputs.tag }}"
          # This is OK for now, but let's revisit this around February 2022
          release_branches: "there_are_only_prereleases_for_now"
          # When we start auto-bumping patches/minors, consider removing pre-releases
          pre_release_branches: "main"
          append_to_pre_release_tag: "alpha"
          # Set to true when you are testing / experimenting
          dry_run: false
        # This may be of interest when we need more control over the version bumps
        # https://github.com/craig-day/compute-tag