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 ) {
                    file_put_contents( getenv( 'GITHUB_OUTPUT' ), "freeze=1\n", FILE_APPEND );
                  } else {
                    file_put_contents( getenv( 'GITHUB_OUTPUT' ), "freeze=0\n", FILE_APPEND );                    
                  }

    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:
            - name: 'Trigger changelog action'
              uses: actions/github-script@v6
              with:
                  script: |
                      github.rest.actions.createWorkflowDispatch({
                        owner: context.repo.owner,
                        repo: context.repo.repo,
                        workflow_id: 'release-changelog.yml',
                        ref: 'trunk',
                        inputs: {
                          releaseVersion: "release/${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }}",
                          releaseBranch: "${{ needs.maybe-create-next-milestone-and-release-branch.outputs.next_version }}"
                        }
                      })