Initial commit - login - no db

.env.dist

+PORT=
+JWT_SECRET=
+DB_URL=
\ No newline at end of file

.gitignore

+node_modules
+dist
+yarn-error.log
+.DS_Store
+.env

package.json

+{
+  "name": "auth-service",
+  "version": "1.0.0",
+  "description": "Authentication Microservice",
+  "main": "index.js",
+  "repository": "git@gitlab.surrey.ac.uk:group-5/auth-service.git",
+  "author": "Josh Everett",
+  "license": "MIT",
+  "private": true,
+  "devDependencies": {
+    "@types/body-parser": "^1.19.2",
+    "@types/cors": "^2.8.13",
+    "@types/express": "^4.17.17",
+    "@types/joi": "^17.2.3",
+    "@types/mongoose": "^5.11.97",
+    "@types/node": "^18.14.6",
+    "concurrently": "^7.6.0",
+    "nodemon": "^2.0.21",
+    "typescript": "^4.9.5"
+  },
+  "scripts": {
+    "build": "npx tsc",
+    "start": "node dist/index.js",
+    "dev": "concurrently \"npx tsc --watch\" \"nodemon -q dist/index.js\""
+  },
+  "dependencies": {
+    "body-parser": "^1.20.2",
+    "cors": "^2.8.5",
+    "dotenv": "^16.0.3",
+    "express": "^4.18.2",
+    "joi": "^17.8.3",
+    "jwt-simple": "^0.5.6",
+    "mongoose": "^7.0.0"
+  }
+}

src/index.ts

+import express, { Express, Request, Response } from 'express';
+import dotenv from 'dotenv';
+import { LoginHandler } from './login';
+import { TokenService, TokenServiceImpl } from './token_service';
+import cors from 'cors';
+import bodyParser from 'body-parser';
+import mongoose from 'mongoose';
+
+dotenv.config();
+
+const app: Express = express();
+const port = process.env.PORT;
+app.use(cors());
+app.use(bodyParser.json());
+app.use(express.json());
+const tokenService: TokenService = new TokenServiceImpl();
+const loginHandler = new LoginHandler(tokenService);
+
+app.use('/auth/login', (req, res) => loginHandler.handle(req, res));
+
+
+(async () => {
+
+  // Connect to the MongoDB database
+  
+  app.listen(port, () => {
+    console.log(`⚡️[server]: Server is running at http://localhost:${port}`);
+  });
+})();

src/login.ts

+import { Request, Response } from "express";
+import Joi from "joi";
+import { TokenService } from "./token_service";
+
+interface ILoginResponse {
+    token: string;
+}
+
+interface ILoginRequest {
+    email: string;
+    password: string;
+}
+export class LoginHandler {
+
+    constructor(private tokenService: TokenService) {
+    } 
+
+    public async handle(req: Request, res: Response): Promise<Response> {
+        console.log(req.body);
+        const schema = Joi.object({
+            email: Joi.string().email().required(),
+            password: Joi.string().min(8).required()
+        })
+
+        try {
+            const {value, error } =  schema.validate(req.body);
+
+            if(error) {
+                console.log('validation error: ', error.message);
+                return res.status(400).send({message: error!.message});
+            }
+            
+            const {email, password} = value;
+
+            const responseBody = await this.login({email, password});
+
+            if(!responseBody) {
+                return res.status(401).send({message: 'Invalid credentials'});
+            }
+
+            return res.status(200).send(responseBody);
+        }
+        catch (err) {
+            console.log('Error: ', err);
+            return res.status(500).send(err);
+        }
+    }    
+
+    private async login(req: ILoginRequest ): Promise<ILoginResponse | null>{
+
+        const user : IUser = {
+            id: `id-${req.email}`,
+            email: req.email,
+            password: req.password,
+            fullName: req.email.split('@')[0],
+        }
+
+        const token = await this.tokenService.generateToken(user);
+        return token;
+    }
+}
\ No newline at end of file

src/token_service.ts

+import { encode, TAlgorithm } from "jwt-simple";
+
+export interface ITokenPayload {
+    token: string;
+}
+
+export class TokenServiceImpl implements TokenService {
+    
+    static algorithm: TAlgorithm = "HS512";
+
+    async generateToken(user: IUser): Promise<ITokenPayload> {
+        const secretKey = process.env.JWT_SECRET!;
+
+        const payload = { 
+            token: encode(user, secretKey, TokenServiceImpl.algorithm)
+        }
+
+        return payload;
+    }
+}
+
+export abstract class TokenService {
+    abstract generateToken(user: IUser): Promise<ITokenPayload>;
+}
\ No newline at end of file

src/user.ts

+interface IUser {
+    id: string;
+    email: string;
+    password: string;
+    fullName: string;
+}
\ No newline at end of file

tsconfig.json

+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig to read more about this file */
+
+    /* Projects */
+    // "incremental": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
+    // "composite": true,                                /* Enable constraints that allow a TypeScript project to be used with project references. */
+    // "tsBuildInfoFile": "./.tsbuildinfo",              /* Specify the path to .tsbuildinfo incremental compilation file. */
+    // "disableSourceOfProjectReferenceRedirect": true,  /* Disable preferring source files instead of declaration files when referencing composite projects. */
+    // "disableSolutionSearching": true,                 /* Opt a project out of multi-project reference checking when editing. */
+    // "disableReferencedProjectLoad": true,             /* Reduce the number of projects loaded automatically by TypeScript. */
+
+    /* Language and Environment */
+    "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
+    // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
+    // "jsx": "preserve",                                /* Specify what JSX code is generated. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
+    // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
+    // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
+    // "jsxImportSource": "",                            /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
+    // "reactNamespace": "",                             /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
+    // "noLib": true,                                    /* Disable including any library files, including the default lib.d.ts. */
+    // "useDefineForClassFields": true,                  /* Emit ECMAScript-standard-compliant class fields. */
+    // "moduleDetection": "auto",                        /* Control what method is used to detect module-format JS files. */
+
+    /* Modules */
+    "module": "commonjs",                                /* Specify what module code is generated. */
+    // "rootDir": "./",                                  /* Specify the root folder within your source files. */
+    // "moduleResolution": "node",                       /* Specify how TypeScript looks up a file from a given module specifier. */
+    // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
+    // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
+    // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
+    // "typeRoots": [],                                  /* Specify multiple folders that act like './node_modules/@types'. */
+    // "types": [],                                      /* Specify type package names to be included without being referenced in a source file. */
+    // "allowUmdGlobalAccess": true,                     /* Allow accessing UMD globals from modules. */
+    // "moduleSuffixes": [],                             /* List of file name suffixes to search when resolving a module. */
+    // "resolveJsonModule": true,                        /* Enable importing .json files. */
+    // "noResolve": true,                                /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
+
+    /* JavaScript Support */
+    // "allowJs": true,                                  /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
+    // "checkJs": true,                                  /* Enable error reporting in type-checked JavaScript files. */
+    // "maxNodeModuleJsDepth": 1,                        /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
+
+    /* Emit */
+    // "declaration": true,                              /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
+    // "declarationMap": true,                           /* Create sourcemaps for d.ts files. */
+    // "emitDeclarationOnly": true,                      /* Only output d.ts files and not JavaScript files. */
+    // "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
+    // "outFile": "./",                                  /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
+    "outDir": "./dist",                                   /* Specify an output folder for all emitted files. */
+    // "removeComments": true,                           /* Disable emitting comments. */
+    // "noEmit": true,                                   /* Disable emitting files from a compilation. */
+    // "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
+    // "importsNotUsedAsValues": "remove",               /* Specify emit/checking behavior for imports that are only used for types. */
+    // "downlevelIteration": true,                       /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
+    // "sourceRoot": "",                                 /* Specify the root path for debuggers to find the reference source code. */
+    // "mapRoot": "",                                    /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,                          /* Include sourcemap files inside the emitted JavaScript. */
+    // "inlineSources": true,                            /* Include source code in the sourcemaps inside the emitted JavaScript. */
+    // "emitBOM": true,                                  /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
+    // "newLine": "crlf",                                /* Set the newline character for emitting files. */
+    // "stripInternal": true,                            /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
+    // "noEmitHelpers": true,                            /* Disable generating custom helper functions like '__extends' in compiled output. */
+    // "noEmitOnError": true,                            /* Disable emitting files if any type checking errors are reported. */
+    // "preserveConstEnums": true,                       /* Disable erasing 'const enum' declarations in generated code. */
+    // "declarationDir": "./",                           /* Specify the output directory for generated declaration files. */
+    // "preserveValueImports": true,                     /* Preserve unused imported values in the JavaScript output that would otherwise be removed. */
+
+    /* Interop Constraints */
+    // "isolatedModules": true,                          /* Ensure that each file can be safely transpiled without relying on other imports. */
+    // "allowSyntheticDefaultImports": true,             /* Allow 'import x from y' when a module doesn't have a default export. */
+    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
+    // "preserveSymlinks": true,                         /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
+    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
+
+    /* Type Checking */
+    "strict": true,                                      /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                            /* Enable error reporting for expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,                         /* When type checking, take into account 'null' and 'undefined'. */
+    // "strictFunctionTypes": true,                      /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
+    // "strictBindCallApply": true,                      /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
+    // "strictPropertyInitialization": true,             /* Check for class properties that are declared but not set in the constructor. */
+    // "noImplicitThis": true,                           /* Enable error reporting when 'this' is given the type 'any'. */
+    // "useUnknownInCatchVariables": true,               /* Default catch clause variables as 'unknown' instead of 'any'. */
+    // "alwaysStrict": true,                             /* Ensure 'use strict' is always emitted. */
+    // "noUnusedLocals": true,                           /* Enable error reporting when local variables aren't read. */
+    // "noUnusedParameters": true,                       /* Raise an error when a function parameter isn't read. */
+    // "exactOptionalPropertyTypes": true,               /* Interpret optional property types as written, rather than adding 'undefined'. */
+    // "noImplicitReturns": true,                        /* Enable error reporting for codepaths that do not explicitly return in a function. */
+    // "noFallthroughCasesInSwitch": true,               /* Enable error reporting for fallthrough cases in switch statements. */
+    // "noUncheckedIndexedAccess": true,                 /* Add 'undefined' to a type when accessed using an index. */
+    // "noImplicitOverride": true,                       /* Ensure overriding members in derived classes are marked with an override modifier. */
+    // "noPropertyAccessFromIndexSignature": true,       /* Enforces using indexed accessors for keys declared using an indexed type. */
+    // "allowUnusedLabels": true,                        /* Disable error reporting for unused labels. */
+    // "allowUnreachableCode": true,                     /* Disable error reporting for unreachable code. */
+
+    /* Completeness */
+    // "skipDefaultLibCheck": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */
+    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
+  }
+}