name: README PR Check

on:
  pull_request:
    types: [opened]
    paths:
      - 'README.md'
  issue_comment:
    types: [created]

jobs:
  check-readme-only:
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
    steps:
      - name: Check files and comment if README-only
        uses: actions/github-script@v8
        with:
          script: |
            const { owner, repo } = context.repo;
            const prNumber = context.payload.pull_request.number;

            const { data: files } = await github.rest.pulls.listFiles({ owner, repo, pull_number: prNumber });

            if (files.length !== 1 || files[0].filename !== 'README.md') {
              console.log('PR modifies files other than README, skipping');
              return;
            }

            // Check if we've already commented
            const { data: comments } = await github.rest.issues.listComments({ owner, repo, issue_number: prNumber });
            if (comments.some(c => c.user.login === 'github-actions[bot]' && c.body.includes('no longer accepting PRs to add new servers'))) {
              console.log('Already commented on this PR, skipping');
              return;
            }

            await github.rest.issues.addLabels({ owner, repo, issue_number: prNumber, labels: ['readme: pending'] });

            await github.rest.issues.createComment({
              owner,
              repo,
              issue_number: prNumber,
              body: [
                'Thanks for your contribution!',
                '',
                '**We are no longer accepting PRs to add new servers to the README.** The third-party server list has been removed from this README in favor of the [MCP Server Registry](https://registry.modelcontextprotocol.io/).',
                '',
                '👉 **To add a new MCP server:** Please publish it to the [MCP Server Registry](https://github.com/modelcontextprotocol/registry) instead. You can browse published servers at [registry.modelcontextprotocol.io](https://registry.modelcontextprotocol.io/).',
                '',
                '👉 **If this PR updates or removes an existing entry:** We do still accept these changes. Please reply with `/i-promise-this-is-not-a-new-server` to continue.',
                '',
                'If this PR is adding a new server, please close it and submit to the registry instead.',
              ].join('\n'),
            });

  handle-confirmation:
    if: github.event_name == 'issue_comment' && github.event.issue.pull_request && contains(github.event.comment.body, '/i-promise-this-is-not-a-new-server')
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - name: Swap labels and minimize comments
        uses: actions/github-script@v8
        with:
          script: |
            const { owner, repo } = context.repo;
            const prNumber = context.payload.issue.number;

            // Check if pending label exists
            const { data: labels } = await github.rest.issues.listLabelsOnIssue({ owner, repo, issue_number: prNumber });
            if (!labels.some(l => l.name === 'readme: pending')) {
              console.log('No pending label found, skipping');
              return;
            }

            // Swap labels
            try {
              await github.rest.issues.removeLabel({ owner, repo, issue_number: prNumber, name: 'readme: pending' });
            } catch (e) {}
            await github.rest.issues.addLabels({ owner, repo, issue_number: prNumber, labels: ['readme: ready for review'] });

            // Find the bot's original comment
            const { data: comments } = await github.rest.issues.listComments({ owner, repo, issue_number: prNumber });
            const botComment = comments.find(c =>
              c.user.login === 'github-actions[bot]' &&
              c.body.includes('no longer accepting PRs to add new servers')
            );

            // Minimize both comments via GraphQL
            const minimizeComment = async (nodeId) => {
              await github.graphql(`
                mutation($id: ID!) {
                  minimizeComment(input: {subjectId: $id, classifier: RESOLVED}) {
                    minimizedComment { isMinimized }
                  }
                }
              `, { id: nodeId });
            };

            if (botComment) {
              await minimizeComment(botComment.node_id);
            }

            // Only minimize user's comment if it's just the command
            const userComment = context.payload.comment.body.trim();
            if (userComment === '/i-promise-this-is-not-a-new-server') {
              await minimizeComment(context.payload.comment.node_id);
            }