debug_bom.js

const fs = require('fs');
const path = require('path');
const https = require('https');

// 1. Fetch the URL and inspect bytes
const url = 'https://mediumslateblue-hummingbird-258203.hostingersite.com/api/whatsapp/webhook?hub_mode=subscribe&hub_verify_token=GenSkytech_Secret_2027&hub_challenge=TEST_CHALLENGE_123';

console.log(`Checking Webhook Response from: ${url}`);

https.get(url, (res) => {
    const chunks = [];
    res.on('data', (chunk) => chunks.push(chunk));
    res.on('end', () => {
        const buffer = Buffer.concat(chunks);
        console.log(`Response Status: ${res.statusCode}`);
        console.log(`Response Length: ${buffer.length}`);
        
        if (buffer.length > 0) {
            console.log(`First 3 bytes: ${buffer[0].toString(16)} ${buffer[1].toString(16)} ${buffer[2].toString(16)}`);
            if (buffer[0] === 0xEF && buffer[1] === 0xBB && buffer[2] === 0xBF) {
                console.log("!!! BOM DETECTED IN RESPONSE !!!");
            } else {
                console.log("No BOM at start of response body.");
            }
        }
    });
}).on('error', (e) => {
    console.error(`Request Error: ${e.message}`);
});

function checkFile(filePath) {
    try {
        if (!fs.existsSync(filePath)) return;
        const buffer = fs.readFileSync(filePath);
        if (buffer.length >= 3 && buffer[0] === 0xEF && buffer[1] === 0xBB && buffer[2] === 0xBF) {
            console.log(`[FIXING BOM] ${filePath}`);
            const clean = buffer.slice(3);
            fs.writeFileSync(filePath, clean);
        }
    } catch (e) {
        console.error(`Error checking ${filePath}: ${e.message}`);
    }
}

function checkDir(dir) {
    if (!fs.existsSync(dir)) return;
    const items = fs.readdirSync(dir, { withFileTypes: true });
    
    for (const item of items) {
        const fullPath = path.join(dir, item.name);
        if (item.isDirectory()) {
            if (item.name !== 'vendor' && item.name !== 'node_modules' && item.name !== '.git') {
                checkDir(fullPath);
            }
        } else if (item.isFile() && item.name.endsWith('.php')) {
            checkFile(fullPath);
        }
    }
}

console.log('Scanning local files for BOM...');
['app', 'bootstrap', 'config', 'public', 'routes'].forEach(d => {
    checkDir(path.resolve(__dirname, d));
});
console.log('Scan complete.');