Hotel Reservation App

Environment vars

This project uses the following environment variables:

Name	Description	Default Value
PORT	port to run the node server	8080
MONGO_USER	the mongo DB user account	root
MONGO_DATABASE	name of the DB	hotel
MONGO_PASSWORD	database password	-
JWT_SECRET	The secret key used to sign JWR web tokens	-

Pre-requisites

Install Node.js version 14.18.1

Getting started

Clone the repository

git clone  https://github.com/Mumalo/HotelReservation.git

Install dependencies

cd HotelApp
npm install
npm install -g typescript

Build and run the project (current for dev env)

npm link typescript
npm run dev

Navigate to http://localhost:8080

API Document endpoints

Graphql Endpoint : http://localhost:8080/graphql

![](./Screenshot 2022-01-02 at 22.46.50.png?raw=true "Graphql server running")

TypeScript + Node

The main purpose of this repository is to show a project setup and workflow for writing Graphql with Typescript in NodeJs. It also demonstrates how code can be arranged to scale for potentially large projects.

Getting TypeScript

Add Typescript to project npm.

npm install -D typescript

Project Structure

The folder structure of this app is explained below:

Name	Description
dist	Contains the distributable (or output) from your TypeScript build.
node_modules	Contains all npm dependencies
src	Contains source code that will be compiled to the dist dir
src/config	Application configuration including environment-specific configs
src/graphql/resolvers	graphql queries and mutations
src/graphql/typedefs	graphql types
src/graphql/index.ts	Entry point to graphql apollo server
src/models	Models define schemas that will be used in storing and retrieving data from Application database
src/services	Services hold the application logic
src/repositories	Data repositories
package.json	Contains npm dependencies as well as build scripts

Building the project

Configuring TypeScript compilation

{
    "compilerOptions": {
      "target": "es2016",
      "module": "commonjs",
      "outDir": "dist",
      "rootDir": "./src", 
      "strict": true
    },
    
    "include": [
      "src/**/*.ts"
    ],
    "exclude": [
      "src/**/*.spec.ts",
      "test",
      "node_modules"
    ]
  }

Models In the Application

User - holds user information (username, password, roles) Role - holds the authorities allowed in the system. The following authorities are allowed

ROLE_ADMIN
ROLE_USER Room - Holds information about a room. There are currently three room types.
SINGLE (single room)
DOUBLE (double room)
PREMIUM (premium room) Reservation - Holds information about rooms and reservations made. A user is allowed to reserve more than one room. However, conflicting reservations are not allowed.

Project Features

User Registration Register new user into the system
User login Login with jwt authentication
Manage Rooms Create and update (update only available for admins) rooms
View free rooms view free rooms for booking
Make Reservation Login and book a room on a free room. Conflicting reservations are not allowed
View Reservations Admin can view all reservations while user can only view theirs

Upcoming Feature

Recommended Rooms When all rooms have been reserved, recommend rooms for user based on defined criteria (e.g add n days to the input date range and search for rooms that will be free by then)

desaawa/HotelReservation