name: "Release: Code freeze"
on:
  schedule:
    - cron: '0 16 * * 4' # Run at 1600 UTC on Thursdays.
  workflow_dispatch:
    inputs:
      timeOverride:
        description: "Time Override: The time to use in checking whether the action should run (default: 'now')."
        default: 'now'
      skipSlackPing:
        description: "Skip Slack Ping: If true, the Slack ping will be skipped (useful for testing)"
        type: boolean
      slackChannelOverride:
        description: "Slack Channel Override: The channel ID to send the Slack ping about the freeze"

env:
    TIME_OVERRIDE: ${{ inputs.timeOverride }}
    GIT_COMMITTER_NAME: 'WooCommerce Bot'
    GIT_COMMITTER_EMAIL: 'no-reply@woocommerce.com'
    GIT_AUTHOR_NAME: 'WooCommerce Bot'
    GIT_AUTHOR_EMAIL: 'no-reply@woocommerce.com'

jobs:
  verify-code-freeze:
    name: "Verify that today is the day of the code freeze"
    runs-on: ubuntu-20.04
    outputs:
      freeze: ${{ steps.check-freeze.outputs.freeze }}
    steps:
      - name: "Install PHP"
        uses: shivammathur/setup-php@v2
        with:
          php-version: '7.4'

      - name: "Check whether today is the code freeze day"
        id: check-freeze
        shell: php {0}
        run: |
          <?php
          $now = time();
          if ( getenv( 'TIME_OVERRIDE' ) ) {
            $now = strtotime( getenv( 'TIME_OVERRIDE' ) );
          }

          // Code freeze comes 26 days prior to release day.
          $release_time         = strtotime( '+26 days', $now );
          $release_day_of_week  = date( 'l', $release_time );
          $release_day_of_month = (int) date( 'j', $release_time );

          // If 26 days from now isn't the second Tuesday, then it's not code freeze day.
          if ( 'Tuesday' !== $release_day_of_week || $release_day_of_month < 8 || $release_day_of_month > 14 ) {
            echo '::set-output name=freeze::1';
          } else {
            echo '::set-output name=freeze::0';
          }

  maybe-create-next-milestone-and-release-branch:
    name: "Maybe create next milestone and release branch"
    runs-on: ubuntu-20.04
    needs: verify-code-freeze
    if: needs.verify-code-freeze.outputs.freeze == 0
    outputs:
      branch: ${{ steps.freeze.outputs.branch }}
      release_version: ${{ steps.freeze.outputs.release_version }}
      next_version: ${{ steps.freeze.outputs.next_version }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 100

      - name: Setup WooCommerce Monorepo
        uses: ./.github/actions/setup-woocommerce-monorepo
        with:
          build: false

      - name: "Run the script to enforce the code freeze"
        id: freeze
        run: php .github/workflows/scripts/release-code-freeze.php
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITHUB_OUTPUTS: 1

  prep-trunk:
    name: Preps trunk for next development cycle
    runs-on: ubuntu-20.04
    needs: maybe-create-next-milestone-and-release-branch
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 100

      - name: fetch-trunk
        run: git fetch origin trunk

      - name: checkout-trunk
        run: git checkout trunk

      - name: Setup WooCommerce Monorepo
        uses: ./.github/actions/setup-woocommerce-monorepo

      - name: Create branch
        run: git checkout -b prep/trunk-for-next-dev-cycle-${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }}

      - name: Bump versions
        working-directory: ./tools/version-bump
        run: pnpm run version bump woocommerce -v ${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }}.0-dev

      - name: Checkout pnpm-lock.yaml to prevent issues
        run: git checkout pnpm-lock.yaml

      - name: Commit changes
        run: git commit -am "Prep trunk for ${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }} cycle"

      - name: Push branch up
        run: git push --no-verify origin prep/trunk-for-next-dev-cycle-${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }}

      - name: Create the PR
        uses: actions/github-script@v6
        with:
          script: |
            const body = "This PR updates the versions in trunk to ${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }} for next development cycle."

            const pr = await github.rest.pulls.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              title: "Prep trunk for ${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }} cycle",
              head: "prep/trunk-for-next-dev-cycle-${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }}",
              base: "trunk",
              body: body
            })

  notify-slack:
    name: "Sends code freeze notification to Slack"
    if: ${{ inputs.skipSlackPing != true }}
    runs-on: ubuntu-20.04
    needs: maybe-create-next-milestone-and-release-branch
    steps:
      - name: Slack
        uses: archive/github-actions-slack@v2.0.0
        id: notify
        with:
          slack-bot-user-oauth-access-token: ${{ secrets.CODE_FREEZE_BOT_TOKEN }}
          slack-channel: ${{ inputs.slackChannelOverride || secrets.WOO_RELEASE_SLACK_CHANNEL }}
          slack-text: |
            :warning-8c: ${{ needs.maybe-create-next-milestone-and-release-branch.outputs.release_version }} Code Freeze :ice_cube:
            
            The automation to cut the release branch for ${{ needs.maybe-create-next-milestone-and-release-branch.outputs.release_version }} has run. Any PRs that were not already merged will be a part of ${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }} by default. If you have something that needs to make ${{ needs.maybe-create-next-milestone-and-release-branch.outputs.release_version }} that hasn't yet been merged, please see the <${{ secrets.FG_LINK }}/code-freeze-for-woocommerce-core-release/|fieldguide page for the code freeze>.

  trigger-changelog-action:
    name: "Trigger changelog action"
    runs-on: ubuntu-20.04
    needs: maybe-create-next-milestone-and-release-branch
    steps:
      - run: |
          curl \
            -X POST \
            -H "Accept: application/vnd.github.v3+json" \
            -H "Authorization: token ${{ secrets.WC_BOT_TRIAGE_TOKEN }}" \
            -d '{"ref":"refs/heads/trunk","inputs":{"releaseBranch":"${{ needs.maybe-create-next-milestone-and-release-branch.outputs.branch }}","releaseVersion":"${{ needs.maybe-create-next-milestone-and-release-branch.outputs.release_version }}"}}' \
            https://api.github.com/repos/${{ github.repository }}/actions/workflows/release-changelog.yml/dispatches