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fcarraUniSa
194
server.js
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194
server.js
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import express from 'express';
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import path from 'path';
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import { fileURLToPath } from 'url';
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import mysql from 'mysql2/promise';
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import pg from 'pg';
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import cors from 'cors';
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import dotenv from 'dotenv';
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dotenv.config();
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = path.dirname(__filename);
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const app = express();
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const PORT = process.env.PORT || 3000;
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app.use(cors());
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app.use(express.json());
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app.use(express.static(path.join(__dirname, 'dist')));
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// DB Configuration
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const DB_TYPE = process.env.DB_TYPE || 'mysql'; // 'mysql' or 'postgres'
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const dbConfig = {
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host: process.env.DB_HOST || 'localhost',
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user: process.env.DB_USER || 'root',
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password: process.env.DB_PASSWORD || '',
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database: process.env.DB_NAME || 'n8n_templates',
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port: process.env.DB_PORT || (DB_TYPE === 'postgres' ? 5432 : 3306),
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};
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let pool;
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// Initialize DB Connection
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const initDB = async () => {
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try {
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if (DB_TYPE === 'postgres') {
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const { Pool } = pg;
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pool = new Pool(dbConfig);
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// Create table for Postgres
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await pool.query(`
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CREATE TABLE IF NOT EXISTS email_templates (
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id VARCHAR(255) PRIMARY KEY,
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template_key VARCHAR(255) UNIQUE NOT NULL,
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name VARCHAR(255) NOT NULL,
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description TEXT,
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subject VARCHAR(255),
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header_html TEXT,
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body_html TEXT,
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footer_html TEXT,
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full_html TEXT,
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required_variables JSONB,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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`);
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} else {
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// MySQL
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pool = mysql.createPool(dbConfig);
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// Create table for MySQL
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await pool.query(`
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CREATE TABLE IF NOT EXISTS email_templates (
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id VARCHAR(255) PRIMARY KEY,
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template_key VARCHAR(255) UNIQUE NOT NULL,
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name VARCHAR(255) NOT NULL,
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description TEXT,
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subject VARCHAR(255),
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header_html TEXT,
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body_html TEXT,
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footer_html TEXT,
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full_html TEXT,
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required_variables JSON,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
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);
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`);
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}
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console.log(`Connected to ${DB_TYPE} database successfully.`);
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} catch (err) {
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console.error('Database connection failed:', err);
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process.exit(1);
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}
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};
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initDB();
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// API Routes
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// GET All Templates
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app.get('/api/templates', async (req, res) => {
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try {
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let rows;
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if (DB_TYPE === 'postgres') {
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const result = await pool.query('SELECT * FROM email_templates ORDER BY updated_at DESC');
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rows = result.rows;
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} else {
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const [result] = await pool.query('SELECT * FROM email_templates ORDER BY updated_at DESC');
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rows = result;
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}
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// Map DB fields back to frontend types
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const templates = rows.map(row => ({
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id: row.id,
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name: row.name,
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description: row.description,
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subject: row.subject,
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header: row.header_html,
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body: row.body_html,
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footer: row.footer_html,
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variables: typeof row.required_variables === 'string' ? JSON.parse(row.required_variables) : row.required_variables,
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updatedAt: row.updated_at
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}));
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res.json(templates);
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} catch (err) {
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console.error(err);
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res.status(500).json({ error: 'Failed to fetch templates' });
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}
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});
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// SAVE (Upsert) Template
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app.post('/api/templates', async (req, res) => {
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const t = req.body;
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const fullHtml = `${t.header}${t.body}${t.footer}`;
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const templateKey = t.name.trim().toLowerCase().replace(/\s+/g, '_').replace(/[^a-z0-9_]/g, '');
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const variablesJson = JSON.stringify(t.variables);
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try {
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if (DB_TYPE === 'postgres') {
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const query = `
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INSERT INTO email_templates (id, template_key, name, description, subject, header_html, body_html, footer_html, full_html, required_variables, updated_at)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, NOW())
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ON CONFLICT (id) DO UPDATE SET
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template_key = EXCLUDED.template_key,
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name = EXCLUDED.name,
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description = EXCLUDED.description,
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subject = EXCLUDED.subject,
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header_html = EXCLUDED.header_html,
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body_html = EXCLUDED.body_html,
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footer_html = EXCLUDED.footer_html,
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full_html = EXCLUDED.full_html,
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required_variables = EXCLUDED.required_variables,
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updated_at = NOW();
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`;
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await pool.query(query, [t.id, templateKey, t.name, t.description, t.subject, t.header, t.body, t.footer, fullHtml, variablesJson]);
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} else {
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const query = `
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INSERT INTO email_templates (id, template_key, name, description, subject, header_html, body_html, footer_html, full_html, required_variables, updated_at)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, NOW())
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ON DUPLICATE KEY UPDATE
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template_key = VALUES(template_key),
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name = VALUES(name),
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description = VALUES(description),
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subject = VALUES(subject),
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header_html = VALUES(header_html),
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body_html = VALUES(body_html),
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footer_html = VALUES(footer_html),
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full_html = VALUES(full_html),
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required_variables = VALUES(required_variables),
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updated_at = NOW();
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`;
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await pool.query(query, [t.id, templateKey, t.name, t.description, t.subject, t.header, t.body, t.footer, fullHtml, variablesJson]);
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}
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res.json({ success: true });
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} catch (err) {
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console.error(err);
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res.status(500).json({ error: 'Failed to save template', details: err.message });
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}
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});
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// DELETE Template
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app.delete('/api/templates/:id', async (req, res) => {
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try {
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if (DB_TYPE === 'postgres') {
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await pool.query('DELETE FROM email_templates WHERE id = $1', [req.params.id]);
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} else {
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await pool.query('DELETE FROM email_templates WHERE id = ?', [req.params.id]);
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}
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res.json({ success: true });
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} catch (err) {
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console.error(err);
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res.status(500).json({ error: 'Failed to delete template' });
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}
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});
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// Handle React Routing
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app.get('*', (req, res) => {
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res.sendFile(path.join(__dirname, 'dist', 'index.html'));
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});
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app.listen(PORT, () => {
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console.log(`Server running on port ${PORT}`);
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});
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