import { Application } from 'express';
import { Logger, LoggerService } from './logger.js';
import { Common, CommonService } from './common.js';

class CORS {

  public logger: LoggerService = Logger;
  public common: CommonService = Common;

  public mount(app: Application): Application {
    this.logger.log({ selectedNode: this.common.initSelectedNode, level: 'INFO', fileName: 'CORS', msg: 'Setting up CORS..' });
    app.use((req, res, next) => {
      res.setHeader('Cache-Control', 'no-cache');
      res.setHeader('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept, Authorization, filePath');
      res.setHeader('Access-Control-Allow-Methods', 'GET, POST, PATCH, PUT, DELETE, OPTIONS');
      if (process.env.NODE_ENV === 'development') {
        res.setHeader('Access-Control-Allow-Credentials', 'true');
        res.setHeader('Access-Control-Allow-Origin', req.headers.origin ? req.headers.origin : req.headers.host ? req.headers.host : '');
      }
      next();
    });
    this.logger.log({ selectedNode: this.common.initSelectedNode, level: 'INFO', fileName: 'CORS', msg: 'CORS Set' });
    return app;
  };

}

export default new CORS;