@naveenm0307/api-logger-middleware/index.js

Middleware to log API calls and send them to a central server

const { createClient } = require("@supabase/supabase-js");

// Initialize Supabase client
// const supabase = createClient(process.env.SUPABASE_URL, process.env.SUPABASE_KEY);
const supabaseUrl = 'https://zliaheybskltrdzbecad.supabase.co';
const supabaseKey='eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6InpsaWFoZXlic2tsdHJkemJlY2FkIiwicm9sZSI6ImFub24iLCJpYXQiOjE3NDIwMzE1NzksImV4cCI6MjA1NzYwNzU3OX0.1EZLzIU-mLmbcGBeE9sX1BA0Pc_3Crv7qcRbhmWu4k8';
const supabase = createClient(supabaseUrl, supabaseKey);

module.exports = function logMiddleware(projectId) {
  if (!projectId) throw new Error("Project ID is required");

  return async function (req, res, next) {
    const startTime = Date.now();

    // Capture original res.end and res.json
    const originalEnd = res.end;
    const originalJson = res.json;

    // Store response data
    let responseBody;

    // Override res.json to capture response data
    res.json = function(data) {
      responseBody = data;
      return originalJson.call(this, data);
    };

    res.end = async function (...args) {
      const duration = Date.now() - startTime;
      
      // Prepare request data
      const requestData = {
        query: req.query || {},
        params: req.params || {},
        body: req.method === 'POST' ? req.body : {},
      };

      // Prepare log entry
      const logEntry = {
        project_id: projectId,
        route: req.url,
        method: req.method,
        status: res.statusCode,
        duration_ms: duration,
        request_data: requestData,
        response_data: responseBody || args[0]?.toString(), // Convert Buffer to string if needed
        headers: req.headers,
        created_at: new Date().toISOString(),
      };

      try {
        // Insert log entry into Supabase
        const { error } = await supabase.from("logs").insert([logEntry]);

        if (error) {
          console.error("Error inserting log into Supabase:", error.message);
        }

        // Console log for development
        console.log('\n🔍 API Request Log:');
        console.log('📍 Route:', req.url);
        console.log('📝 Method:', req.method);
        console.log('⏱️ Duration:', duration + 'ms');
        console.log('📊 Status:', res.statusCode);
        console.log('📥 Request Data:', JSON.stringify(requestData, null, 2));
        console.log('📤 Response Data:', JSON.stringify(responseBody || args[0]?.toString(), null, 2));
        console.log('⌚ Timestamp:', new Date().toISOString());
        console.log('-------------------\n');

      } catch (err) {
        console.error("Database Error:", err.message);
      }

      originalEnd.apply(res, args);
    };

    next();
  };
};