# Copyright 2024 The Janus IDP Authors
#
# 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: PR Bundle Manifests Validator

on:
  # pull_request_target needed to be able to commit and push bundle diffs to external fork PRs.
  # But we included a manual authorization safeguard to prevent PWN requests. See the 'authorize' job below.
  pull_request_target:
    branches: 
    - main
    - rhdh-1.[0-9]+
    - 1.[0-9]+.x

concurrency:
  group: ${{ github.workflow }}-${{ github.event.number }}
  cancel-in-progress: true

jobs:
  authorize:
    # The 'external' environment is configured with the maintainers team as required reviewers.
    # All the subsequent jobs in this workflow 'need' this job, which will require manual approval for PRs coming from external forks.
    # see list of approvers in OWNERS file
    environment:
      ${{ (github.event.pull_request.head.repo.full_name == github.repository ||
      contains(fromJSON('["gazarenkov","jianrongzhang89","kadel","nickboldt","rm3l","kim-tsao","openshift-cherrypick-robot"]'), github.actor)) && 'internal' || 'external' }}
    runs-on: ubuntu-latest
    steps:
      - name: approved
        run: echo "✓"

  pr-bundle-diff-checks:
    name: PR Bundle Diff
    runs-on: ubuntu-latest
    needs: authorize
    permissions:
      contents: write
      pull-requests: write
    steps:
      - name: Checkout
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
        with:
          fetch-depth: 0
          repository: ${{github.event.pull_request.head.repo.full_name}}
          ref: ${{ github.event.pull_request.head.ref }}

      - name: Setup Go
        uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v5
        with:
          go-version-file: 'go.mod'

      - name: Check for outdated bundle
        id: bundle-diff-checker
        run: |
          make bundle
          git status --porcelain
          # Since operator-sdk 1.26.0, `make bundle` changes the `createdAt` field from the bundle every time we run it.
          # The `git diff` below checks if only the createdAt field has changed. If is the only change, it is ignored.
          # Inspired from https://github.com/operator-framework/operator-sdk/issues/6285#issuecomment-1415350333
          echo "MANIFESTS_CHANGED=$(if git diff --quiet -I'^    createdAt: ' bundle; then echo "false"; else echo "true"; fi)" >> $GITHUB_OUTPUT

      - name: Commit any manifest changes
        if: ${{ steps.bundle-diff-checker.outputs.MANIFESTS_CHANGED == 'true' }}
        run: |
          git config user.name 'github-actions[bot]'
          git config user.email 'github-actions[bot]@users.noreply.github.com'
          git fetch --prune
          git pull --rebase --autostash
          git add -A .
          git commit \
            -m "Regenerate bundle manifests" \
            -m "Co-authored-by: $GITHUB_ACTOR <$GITHUB_ACTOR@users.noreply.github.com>"
          git push

      - name: Comment on PR if bundle manifests were updated
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
        if: ${{ !cancelled() && steps.bundle-diff-checker.outputs.MANIFESTS_CHANGED == 'true' }}
        continue-on-error: true
        env:
          GH_BLOB_VIEWER_BASE_URL: ${{github.event.pull_request.head.repo.html_url}}/blob/${{github.event.pull_request.head.ref}}
        with:
          script: |
            await github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: '⚠️ <b>Files changed in bundle generation!</b><br/><br/>Those changes to the operator bundle manifests should have been pushed automatically to your PR branch.<br/>You might also need to manually update the [`.rhdh/bundle/manifests/rhdh-operator.csv.yaml`](${{ env.GH_BLOB_VIEWER_BASE_URL }}/.rhdh/bundle/manifests/rhdh-operator.csv.yaml) CSV file accordingly.'
            })