first commit

api/src/app.ts

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+import cors from 'cors';
+import express from 'express';
+import fs from 'node:fs';
+import helmet from 'helmet';
+import morgan from 'morgan';
+import path from 'node:path';
+import { env } from './config/env.js';
+import { errorHandler, notFoundHandler } from './middleware/error-handler.js';
+import { apiRouter } from './routes/index.js';
+export const createApp = () => {
+  const app = express();
+  const uploadDir = path.resolve(env.UPLOAD_DIR);
+  fs.mkdirSync(uploadDir, { recursive: true });
+  app.use(helmet({ crossOriginResourcePolicy: false }));
+  app.use(cors({ origin: env.API_CORS_ORIGIN, credentials: true }));
+  app.use(morgan('dev'));
+  app.use(express.json({ limit: '2mb' }));
+  app.use(express.urlencoded({ extended: true }));
+  app.use('/uploads', express.static(uploadDir));
+  app.use('/api', apiRouter);
+  app.use(notFoundHandler);
+  app.use(errorHandler);
+  return app;
+};