user-managements-node-server/src/components/componentsUtils.js

starter for express node server with user managements, authentication authorization

import HttpError from "../utils/HttpError";
import httpStatus from 'http-status'
import validator from 'validator'
import writeAudit from './audit'

const init = ({ logger }) => {

    const onCatchLog = (error) => {
        const { code, messageAll: message, list: messages } = error

        logger
            .error(`message: ${message}, code: ${code}`)
    }

    const onCatchResponse = (error, res) => {
        const { code, messageAll: message, list: messages } = error

        res
            .status(code || httpStatus.INTERNAL_SERVER_ERROR)
            .json({ message, messages })
    }

    const onCatch = (error, res) => {
        onCatchLog(error)
        onCatchResponse(error, res)
    }

    const onCatchUnAuthorize = (error, res) => {
        onCatchLog(error)
        onCatchResponse({
            code: httpStatus.UNAUTHORIZED,
            messageAll: httpStatus[httpStatus.UNAUTHORIZED]
        }, res)
    }

    const isValidUserInput = ({ body, headers, query }) => {
        const { username } = body
        return Promise.resolve(
            username && validator.isEmail(username || '') || validator.isLength(headers.token || query.token || query.actionId, { min: 6 })
        )
    }

    const validateInput = (req, res, next) => {
        isValidUserInput(req)
            .then(isValid => {
                if(!isValid){
                    throw new HttpError('Invalid username / token / actionId', httpStatus.BAD_REQUEST)
                }
                return isValid
            })
            .then(() => next())
            .catch((error) => {
                onCatch(error, res)
            })
    }

    const writeAuditAndNext = (req, res, next) => {
        writeAudit(req)
            .then((response) => (
                next()
                )
            )
            .catch((error) => {
                onCatch(error, res)
            })
    }

    return {
        onCatch,
        validateInput,
        writeAuditAndNext,
        onCatchLog,
        onCatchResponse,
        onCatchUnAuthorize
    }
}

export default init