name: "Pre-release"

on:
  push:
    tags:
      - "v[0-9]+.[0-9]+.[0-9]+-alpha.[0-9]+"  # e.g. v0.37.0-alpha.1, v0.38.0-alpha.10
      - "v[0-9]+.[0-9]+.[0-9]+-beta.[0-9]+"   # e.g. v0.37.0-beta.1, v0.38.0-beta.10
      - "v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+"      # e.g. v0.37.0-rc1, v0.38.0-rc10

jobs:
  prerelease:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - uses: actions/setup-go@v3
        with:
          go-version: '1.18'

      - name: Build
        uses: goreleaser/goreleaser-action@v3
        if: ${{ github.event_name == 'pull_request' }}
        with:
          version: latest
          args: build --skip-validate   # skip validate skips initial sanity checks in order to be able to fully run

      # Link to CHANGELOG_PENDING.md as release notes.
      - run: echo https://github.com/tendermint/tendermint/blob/${GITHUB_REF#refs/tags/}/CHANGELOG_PENDING.md > ../release_notes.md

      - name: Release
        uses: goreleaser/goreleaser-action@v3
        if: startsWith(github.ref, 'refs/tags/')
        with:
          version: latest
          args: release --rm-dist --release-notes=../release_notes.md
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  prerelease-success:
    needs: prerelease
    if: ${{ success() }}
    runs-on: ubuntu-latest
    steps:
      - name: Notify Slack upon pre-release
        uses: slackapi/slack-github-action@v1.22.0
        env:
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
          RELEASE_URL: "${{ github.server_url }}/${{ github.repository }}/releases/tag/${{ github.ref_name }}"
        with:
          payload: |
            {
              "blocks": [
                {
                  "type": "section",
                  "text": {
                    "type": "mrkdwn",
                    "text": ":sparkles: New Tendermint pre-release: <${{ env.RELEASE_URL }}|${{ github.ref_name }}>"
                  }
                }
              ]
            }