name: DDG File Change Monitor

on:
  pull_request:
    branches: [ main ]
    types: [ opened, synchronize ]

jobs:
  check-files:
    name: Check files
    runs-on: ubuntu-22.04
    permissions:
      contents: read
      pull-requests: write
    steps:
    - name: Checkout code
      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
      with:
        fetch-depth: 0
        persist-credentials: false

    - name: Get changed files
      id: changed-files
      uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3.0.2
      with:
        list-files: shell
        filters: |
          monitored:
            - 'apps/desktop/native-messaging-test-runner/**'
            - 'apps/desktop/src/services/duckduckgo-message-handler.service.ts'
            - 'apps/desktop/src/services/encrypted-message-handler.service.ts'

    - name: Remove past BIT status comments
      uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
      with:
        script: |
          // Note: should match the first line of `message` in the communication steps
          const workflowCommentTag = '<!-- comment_tag: ddg-test-warning -->';

          const issueComments = await github.rest.issues.listComments({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
          });

          for (const comment of issueComments.data || []) {
            const shouldDeleteComment =
              // Do not delete comments that were not automated
              !!comment.performed_via_github_app &&

              // Do not delete user comments
              comment.user.type === 'Bot' &&

              // Do not delete edited comments
              comment.created_at === comment.updated_at &&

              // Only delete comments from this workflow
              comment.body.trim().startsWith(workflowCommentTag);

            if (shouldDeleteComment) {
              await github.rest.issues.deleteComment({
                comment_id: comment.id,
                owner: context.repo.owner,
                repo: context.repo.repo,
              });
            }
          }

    - name: Comment on PR if monitored files changed
      if: steps.changed-files.outputs.monitored == 'true'
      uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
      env:
        _MONITORED_FILES: ${{ steps.changed-files.outputs.monitored_files }}
      with:
        script: |
          const changedFiles = `$_MONITORED_FILES`.split(' ').filter(file => file.trim() !== '');

          const message = `<!-- comment_tag: ddg-test-warning -->
          ⚠️🦆 **DuckDuckGo Integration files have been modified in this PR:**

          ${changedFiles.map(file => `- \`${file}\``).join('\n')}

          Please run the DuckDuckGo native messaging test runner from this branch using [these instructions](https://contributing.bitwarden.com/getting-started/clients/desktop/native-messaging-test-runner) and ensure it functions properly.`;

          github.rest.issues.createComment({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
            body: message
          });