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 }}
    steps:
      # Create/update release PR
      - uses: google-github-actions/release-please-action@v3
        id: release
        with:
          # Required input to specify the release type (node package).
          release-type: node
          # Make sure we create the PR against the correct branch.
          default-branch: ${{ github.ref_name }}

      # If we didn't create a release, we may have created or updated a PR.
      - uses: actions/checkout@v3
        if: steps.release.outputs.release_created == false
      - name: Custom update Player version
        if: steps.release.outputs.release_created == false
        run: |
          # Check out the branch that release-please created.
          # If it does not exist, FAIL!
          git fetch
          git checkout release-please--branches--${{ github.ref_name }}--components--shaka-player || exit 1
          # If it does exist, update lib/player.js in the PR branch, so that the
          # -uncompiled tag remains in the player version in that context.
          VERSION="v$(jq -r .version package.json)-uncompiled"
          sed -e "s/^\\(shaka.Player.version =\\).*/\\1 '$VERSION';/" \
              -i lib/player.js
          git add lib/player.js
          # Emulate the actions bot.
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          # Update the PR.
          git commit --amend --no-edit
          git push -f

  # 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 && endsWith(needs.release.outputs.tag_name, '.0') == false
    steps:
      - uses: actions/checkout@v3
        with:
          ref: main
      - name: Tag the main branch
        run: |
          # Emulate the actions bot.
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          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@v3
        with:
          fetch-depth: 0
          persist-credentials: false

      - uses: actions/setup-node@v1
        with:
          node-version: 16
          registry-url: 'https://registry.npmjs.org'

      - run: npm ci
      - run: npm publish
        env:
          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}

      - run: npm pack
      - uses: svenstaro/upload-release-action@483c1e56f95e88835747b1c7c60581215016cbf2
        with:
          repo_token: ${{ secrets.GITHUB_TOKEN }}
          tag: ${{ needs.release.outputs.tag_name }}
          file: shaka-player-*.tgz
          file_glob: true
          overwrite: true

  appspot:
    runs-on: ubuntu-latest
    needs: release
    if: needs.release.outputs.release_created
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0
          persist-credentials: false

      - uses: actions/setup-node@v1
        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
            echo APPSPOT_PROMOTE=true >> $GITHUB_ENV
          else
            echo APPSPOT_PROMOTE=false >> $GITHUB_ENV
          fi

          # 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@v0
        with:
          credentials_json: '${{ secrets.APPENGINE_DEPLOY_KEY }}'

      - uses: google-github-actions/deploy-appengine@v0
        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 && endsWith(needs.release.outputs.tag_name, '.0')
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

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