Homelabv4/apps/n8n/manifests/hooks-configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: n8n-hooks
  namespace: n8n
data:
  hooks.js: |
    // n8n v2.0.3 compatible hooks for Authentik forward auth integration
    const { resolve, dirname } = require('path');
    
    module.exports = {
        credentials: {
            create: [],
            delete: [],
            update: []
        },
        workflow: {
            create: [],
            delete: [],
            update: []
        },
        server: {
            started: [
                async function (app) {
                    console.log('[n8n-hooks] Initializing forward auth middleware');
                    
                    // Get Express app
                    const expressApp = app?.app;
                    if (!expressApp) {
                        console.error('[n8n-hooks] Express app not available');
                        return;
                    }

                    let issueCookie, UserRepository, Container;
                    try {
                        const n8nPath = dirname(require.resolve('n8n'));
                        issueCookie = require(resolve(n8nPath, 'dist/auth/jwt')).issueCookie;
                        UserRepository = require(resolve(n8nPath, 'dist/databases/repositories/user.repository')).UserRepository;
                        Container = require('typedi').Container;
                    } catch (error) {
                        console.error('[n8n-hooks] Failed to load dependencies:', error.message);
                        return;
                    }

                    const ignoreAuthRegexp = /^\/(assets|healthz|webhook|rest\/oauth2-credential|rest\/settings|static|icons|types)/;

                    // Add middleware for forward auth
                    expressApp.use(async (req, res, next) => {
                        try {
                            if (ignoreAuthRegexp.test(req.url)) return next();
                            if (req.cookies?.['n8n-auth']) return next();
                            if (!process.env.N8N_FORWARD_AUTH_HEADER) return next();

                            const headerName = process.env.N8N_FORWARD_AUTH_HEADER.toLowerCase().replace(/_/g, '-');
                            const email = req.headers[headerName];
                            if (!email) return next();

                            const userRepo = Container.get(UserRepository);
                            const user = await userRepo.findOne({ where: { email } });
                            
                            if (!user) {
                                console.warn(`[n8n-hooks] User not found: ${email}`);
                                res.statusCode = 401;
                                res.end(`User ${email} not found. Please contact an admin.`);
                                return;
                            }

                            console.log(`[n8n-hooks] Auto-login: ${email}`);
                            issueCookie(res, user);
                            next();
                        } catch (error) {
                            console.error('[n8n-hooks] Middleware error:', error.message);
                            next();
                        }
                    });

                    console.log('[n8n-hooks] Forward auth middleware active');
                }
            ]
        }
    };