prerelease.yml

name: Prerelease

on:
  push:
    branches-ignore:
      - "master"

jobs:
  build:
    name: Build
    if: "contains(github.event.head_commit.message, '[prerelease]')"
    uses: ./.github/workflows/build-and-upload.yml
    secrets:
      npm_token: ${{ secrets.npm_token }}

  prerelease:
    name: Prerelease
    needs: build
    if: ${{ needs.build.outputs.has_changes == 'true' }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Set variables
        run: |
          echo "COMMIT_SHA=${GITHUB_SHA}" >> $GITHUB_ENV
      - name: Run Setup
        uses: ./.github/actions/setup
        with:
          npm_token: ${{ secrets.npm_token }}
      - uses: ./.github/actions/git-creds
      - uses: ./.github/actions/download-builds
      - name: Generate new versions
        id: generate-versions
        run: |
          commit_sha=$COMMIT_SHA
          preid="alpha-${commit_sha:0:5}"

          full_output=$(yarn lerna version --exact --conventional-commits --conventional-prerelease --json --no-changelog --no-push --preid "$preid" -y)

          # extract only the JSON portion from the full output, excluding yarn logs
          json_output=$(echo "$full_output" | awk '/^\[/{p=1} p; /\]/{p=0}' )

          echo 'new_versions<<EOF' >> $GITHUB_OUTPUT
          echo "$json_output" >> $GITHUB_OUTPUT
          echo 'EOF' >> $GITHUB_OUTPUT
      - run: yarn config set registry https://registry.npmjs.org/
      - name: Setup .npmrc for publish
        run: npm set "//registry.npmjs.org/:_authToken=$NODE_AUTH_TOKEN"
        env:
          NODE_AUTH_TOKEN: ${{ secrets.npm_token }}
      - name: Publish new versions
        run: yarn lerna publish from-package --dist-tag prerelease -y
      - name: Get current PR id
        uses: 8BitJonny/gh-get-current-pr@3.0.0
        id: PR
      - name: Prepare PR comment
        id: prepare-comment
        env:
          json_data: ${{ steps.generate-versions.outputs.new_versions }}
        run: |
          echo 'comment_body<<EOF' >> $GITHUB_OUTPUT

          echo "A new prerelease version of this PR has been published! 🎉" >> $GITHUB_OUTPUT
          echo "To install this prerelease version, run the following command in your terminal with any one of the packages changed in this PR:" >> $GITHUB_OUTPUT

          echo "$json_data" | jq -r '.[] | "\nTo update `\(.name)`:\n```\nyarn add \(.name)@\(.newVersion)\n```\nOr with npm:\n```\nnpm i \(.name)@\(.newVersion)\n```\n"' >> $GITHUB_OUTPUT

          echo 'EOF' >> $GITHUB_OUTPUT
      - name: Create comment with prerelease version details
        uses: peter-evans/create-or-update-comment@v4
        with:
          issue-number: ${{ steps.PR.outputs.number }}
          body: ${{ steps.prepare-comment.outputs.comment_body }}