Forum Comment Screening

npm install express @safecomms/sdk

const { SafeComms } = require('@safecomms/sdk');

// Initialize SDK
const safecomms = new SafeComms({ apiKey: process.env.SAFECOMMS_API_KEY });

/**
 * Express Middleware for Content Screening
 * @param {string} fieldName - The body field to check (e.g., 'comment', 'content')
 */
const screenContent = (fieldName) => {
  return async (req, res, next) => {
    try {
      const content = req.body[fieldName];

      if (!content) return next();

      // > ANALYZE_REQ_BODY
      const analysis = await safecomms.text.analyze({
        content: content
      });

      // > FILTER_LOGIC
      if (analysis.flagged) {
        return res.status(400).json({
          error: 'Content Rejected',
          reason: 'Your content contains prohibited material.',
          category: analysis.primaryCategory
        });
      }

      // Attach analysis to request object for later use (e.g. analytics)
      req.safecomms = analysis;

      next();
    } catch (error) {
      console.error('> MIDDLEWARE_ERROR:', error);
      next(error);
    }
  };
};

module.exports = screenContent;

const express = require('express');
const screenContent = require('./middleware/moderation');
const app = express();

app.use(express.json());

// Apply middleware to specific route
app.post('/api/comments', screenContent('comment'), (req, res) => {
  // If we get here, content is safe
  // db.saveComment(req.body.comment);

  res.status(201).json({
    success: true,
    message: 'Comment posted successfully'
  });
});

app.listen(3000, () => console.log('> SERVER_READY'));