Add/Update web/server.js (Batch 4: real audit API backend + fetch wiring; port 8199 to avoid Gitea 3000 collision)

web/server.js

@@ -0,0 +1,58 @@
+// DOP Cold Audit intake API — Node.js, zero-dependency.
+// Listens for POST /api/audit and appends leads to audit_leads.jsonl.
+//
+// NOTE: Port is intentionally NOT hardcoded to 3000 — Gitea occupies
+// localhost:3000 on this VPS. Set PORT env (systemd) or it defaults to 8199.
+// Bind to 127.0.0.1 when fronted by the Caddy same-origin /api/audit route.
+
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+const PORT = parseInt(process.env.PORT || '8199', 10);
+const HOST = process.env.HOST || '127.0.0.1';
+const LEADS_FILE = process.env.LEADS_FILE || path.join(__dirname, 'audit_leads.jsonl');
+
+const server = http.createServer((req, res) => {
+    // CORS — in production restrict this to your actual site origin,
+    // or (preferred) drop CORS entirely and use the Caddy same-origin proxy.
+    res.setHeader('Access-Control-Allow-Origin', '*');
+    res.setHeader('Access-Control-Allow-Methods', 'POST, OPTIONS');
+    res.setHeader('Access-Control-Allow-Headers', 'Content-Type');
+
+    if (req.method === 'OPTIONS') {
+        res.writeHead(204);
+        res.end();
+        return;
+    }
+
+    if (req.method === 'POST' && req.url === '/api/audit') {
+        let body = '';
+        req.on('data', (chunk) => { body += chunk.toString(); });
+        req.on('end', () => {
+            try {
+                const data = JSON.parse(body);
+
+                // TODO: Pipe this directly into the agent-assisted audit engine.
+                // For now, append to a JSONL file for human review.
+                const record = { ...data, received_at: new Date().toISOString() };
+                fs.appendFileSync(LEADS_FILE, JSON.stringify(record) + '\n');
+
+                console.log('New Audit Request Received:', JSON.stringify(record));
+                res.writeHead(200, { 'Content-Type': 'application/json' });
+                res.end(JSON.stringify({ status: 'success', message: 'Audit request received.' }));
+            } catch (error) {
+                res.writeHead(400, { 'Content-Type': 'application/json' });
+                res.end(JSON.stringify({ status: 'error', message: 'Invalid JSON payload.' }));
+            }
+        });
+    } else {
+        res.writeHead(404, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify({ status: 'error', message: 'Not Found' }));
+    }
+});
+
+server.listen(PORT, HOST, () => {
+    console.log(`DOP Audit API listening on ${HOST}:${PORT}`);
+    console.log(`Leads will be appended to: ${LEADS_FILE}`);
+});