# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

name: "CF: Cleanup PR Preview"

permissions:
  pull-requests: write

# This Workflow depends on 'github.event.number',
# not compatible with branch or manual triggers.
on:
  pull_request:
    types:
      - closed

jobs:
  clean:
    # Only run for PRs from the same repository to ensure secret access
    if: "${{ github.event.pull_request.head.repo.full_name == github.event.pull_request.base.repo.full_name }}"
    runs-on: ubuntu-24.04
    concurrency:
      # Shared concurrency group with preview staging.
      group: "cf-preview-${{ github.event.number }}"
      cancel-in-progress: true
    steps:
      - name: Delete Cloudflare Pages Deployments via API
        env:
          ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          PROJECT_NAME: toolbox-docs
          BRANCH_NAME: pr-${{ github.event.number }}
        run: |
          echo "Fetching deployments for preview branch: $BRANCH_NAME"

          # Fetch the most recent deployments from your Cloudflare project
          RESPONSE=$(curl -s -X GET "https://api.cloudflare.com/client/v4/accounts/$ACCOUNT_ID/pages/projects/$PROJECT_NAME/deployments" \
            -H "Authorization: Bearer $API_TOKEN")

          # Use 'jq' to extract all deployment IDs that match this specific PR branch alias
          IDS=$(echo "$RESPONSE" | jq -r --arg branch "$BRANCH_NAME" '.result[] | select(.deployment_trigger.metadata.branch? == $branch) | .id')

          if [ -z "$IDS" ]; then
            echo "No preview deployments found to clean up."
          else
            for id in $IDS; do
              echo "Deleting Cloudflare deployment ID: $id"
              curl -s -X DELETE "https://api.cloudflare.com/client/v4/accounts/$ACCOUNT_ID/pages/projects/$PROJECT_NAME/deployments/$id?force=true" \
                -H "Authorization: Bearer $API_TOKEN"
            done
            echo "Successfully removed preview environment."
          fi

      - name: Comment
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9
        with:
          script: |
            github.rest.issues.createComment({
              issue_number: context.payload.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: "🧨 **Preview deployments removed.**\n\nCloudflare Pages environments for `pr-${{ github.event.number }}` have been deleted."
            })