getting-better-prueba-common-library/src/index.ts

getting-prueba-better-common-library

import { Request, Response, NextFunction, Errback } from "express";
import winston, { format, transports } from "winston"
import { ErrorDto } from "./types/error.dto";
import { BaseResponseDto } from "./types/baseResponse.dto";

export const logger = winston.createLogger();

if (process.env.NODE_ENV !== 'production') {
    logger.add(new transports.Console({
        format: format.combine(
            format.colorize(),
            format.timestamp(),
            format.printf(info => `${info.timestamp} ${info.level}: ${info.message}`)
        ),  
    }));
}

const errorHandler = (err: ErrorDto, req: Request, res: Response, next: NextFunction) : void => {
    logger.error(err.message)
    res.status(500).json({
        error: {
            code: 500,
            message: err.message,
        }});
    next();
}

const routeNotFoundHandler = (req: Request, res: Response, next: NextFunction) : void => {
    res.status(404).json({
        error: {
            code: 404,
            message: "Route not found.",
        }
    })
}

const isUserAuthenticated = (req: Request, res: Response, next: NextFunction) : void => {
    if (req.session.username) {
        next();
    }
    else {
        logger.warn(`${req.url} : Hubo un intento de acceso no autorizado.`)
        const notAuthenticatedResponse: BaseResponseDto = {
            "error": {
                "code": 403,
                "message": "Debe iniciar sesión para acceder a este recurso."
            }
        }

        res.status(403).send(notAuthenticatedResponse);
    }
}


export default { errorHandler, routeNotFoundHandler, isUserAuthenticated }