release-please.yaml

name: Release

on:
  push:
    branches:
      - main
      - v[0-9]*

jobs:
  release:
    runs-on: ubuntu-latest
    outputs:
      release_created: ${{ steps.release.outputs.release_created }}
      tag_name: ${{ steps.release.outputs.tag_name }}
      patch: ${{ steps.release.outputs.patch }}
    steps:
      # Create/update release PR
      - uses: google-github-actions/release-please-action@v4
        id: release
        with:
          # Make sure we create the PR against the correct branch.
          target-branch: ${{ github.ref_name }}
          # Use a special shaka-bot access token for releases.
          token: ${{ secrets.RELEASE_PLEASE_TOKEN }}
          # See also settings in these files:
          manifest-file: .release-please-manifest.json
          config-file: .release-please-config.json

  # The jobs below are all conditional on a release having been created by
  # someone merging the release PR.  They all run in parallel.

  tag-main:
    runs-on: ubuntu-latest
    needs: release
    if: needs.release.outputs.release_created && needs.release.outputs.patch != '0'
    steps:
      - uses: actions/checkout@v4
        with:
          # Check out the origin repo, and do it at main, not the PR branch.
          ref: main
          # Use a special shaka-bot access token for releases.
          token: ${{ secrets.RELEASE_PLEASE_TOKEN }}
      - name: Tag the main branch
        run: |
          # Set missing git config for the tag.
          git config user.name "shaka-bot"
          git config user.email "shaka-bot@users.noreply.github.com"
          # Tag the main branch.
          VERSION=${{ needs.release.outputs.tag_name }}
          git tag -m "$VERSION-main" "$VERSION-main"
          git push origin "$VERSION-main"

  npm:
    runs-on: ubuntu-latest
    needs: release
    if: needs.release.outputs.release_created
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          persist-credentials: false

      - uses: actions/setup-node@v4
        with:
          node-version: 16
          registry-url: 'https://registry.npmjs.org'

      - name: Compute NPM tags
        run: |
          # NPM publish always sets a tag.  If you don't provide an explicit
          # tag, you get the "latest" tag by default, but we want "latest" to
          # always point to the highest version number.  So we set an explicit
          # tag on every "publish" command, then follow up with a command to
          # set "latest" only if this release was the highest version yet.

          # The explicit tag is based on the branch.  If the git tag is v4.4.1,
          # the branch was v4.4.x, and the explicit NPM tag should be
          # v4.4-latest.
          GIT_TAG_NAME=${{ needs.release.outputs.tag_name }}
          NPM_TAG=$(echo "$GIT_TAG_NAME" | cut -f 1-2 -d .)-latest
          echo "NPM_TAG=$NPM_TAG" >> $GITHUB_ENV

          # We only tag the NPM package as "latest" if this release is the
          # highest version to date.
          RELEASE_TAGS=$(git tag | grep ^v[0-9] | grep -Ev -- '-(master|main)')
          LATEST_RELEASE=$(echo "$RELEASE_TAGS" | sort --version-sort | tail -1)

          if [[ "$GIT_TAG_NAME" == "$LATEST_RELEASE" ]]; then
            NPM_LATEST=true
          else
            NPM_LATEST=false
          fi
          echo NPM_LATEST=$NPM_LATEST >> $GITHUB_ENV

          # Debug the decisions made here.
          echo "Latest release: $LATEST_RELEASE"
          echo "This release: $GIT_TAG_NAME"
          echo "NPM tag: $NPM_TAG"
          echo "NPM latest: $NPM_LATEST"

      - run: npm ci
      - name: Publish
        env:
          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
        run: |
          # Publish with an explicit tag.
          npm publish --tag "$NPM_TAG"

          # Add the "latest" tag if needed.
          if [[ "$NPM_LATEST" == "true" ]]; then
            NPM_VERSION=$(npm version --json | jq -r '."shaka-player"')
            npm dist-tag add "shaka-player@$NPM_VERSION" latest
          fi

      - run: npm pack

      - name: Attach to release
        env:
          GITHUB_TOKEN: ${{ secrets.RELEASE_PLEASE_TOKEN }}
        run: |
          gh release upload \
              ${{ needs.release.outputs.tag_name }} shaka-player-*.tgz \
              --clobber

  appspot:
    runs-on: ubuntu-latest
    needs: release
    if: needs.release.outputs.release_created
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          persist-credentials: false

      - uses: actions/setup-node@v4
        with:
          node-version: 16
          registry-url: 'https://registry.npmjs.org'

      - name: Compute appspot subdomain and promotion
        run: |
          # This is the same as the version tag, but with dots replaced by
          # dashes.  For example, v3.2.2 would have the subdomain v3-2-2.
          APPSPOT_SUBDOMAIN=$( echo ${{ needs.release.outputs.tag_name }} | sed -e 's/\./-/g' )
          echo APPSPOT_SUBDOMAIN=$APPSPOT_SUBDOMAIN >> $GITHUB_ENV

          # "Promoting" an appspot deployment makes it the default which shows
          # up on shaka-player-demo.appspot.com (no subdomain).  This should be
          # done for the latest release version from the latest release branch.
          RELEASE_TAGS=$(git tag | grep ^v[0-9] | grep -Ev -- '-(master|main)')
          LATEST_RELEASE=$(echo "$RELEASE_TAGS" | sort --version-sort | tail -1)
          TAG_NAME=${{ needs.release.outputs.tag_name }}

          if [[ "$TAG_NAME" == "$LATEST_RELEASE" ]]; then
            APPSPOT_PROMOTE=true
          else
            APPSPOT_PROMOTE=false
          fi
          echo APPSPOT_PROMOTE=$APPSPOT_PROMOTE >> $GITHUB_ENV

          # Debug the decisions made here.
          echo "Subdomain: $APPSPOT_SUBDOMAIN"
          echo "Latest release: $LATEST_RELEASE"
          echo "This release: $TAG_NAME"
          echo "Promote: $APPSPOT_PROMOTE"

      - uses: ./.github/workflows/custom-actions/prep-for-appspot

      - uses: google-github-actions/auth@v2
        with:
          credentials_json: '${{ secrets.APPENGINE_DEPLOY_KEY }}'

      - uses: google-github-actions/deploy-appengine@v2
        with:
          project_id: shaka-player-demo
          version: ${{ env.APPSPOT_SUBDOMAIN }}
          promote: ${{ env.APPSPOT_PROMOTE }}

  auto-branch:
    runs-on: ubuntu-latest
    needs: release
    if: needs.release.outputs.release_created && needs.release.outputs.patch == '0'
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          # Use a special shaka-bot access token for releases.
          token: ${{ secrets.RELEASE_PLEASE_TOKEN }}

      - name: Create release branch
        run: |
          TAG=${{ needs.release.outputs.tag_name }}
          BRANCH=$(echo "$TAG" | sed -e 's/\.0$/.x/')
          git push origin HEAD:"$BRANCH"