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user.controller.ts
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user.controller.ts
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// Copyright IBM Corp. 2019,2020. All Rights Reserved.
// Node module: loopback4-example-shopping
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT
import {repository, model, property} from '@loopback/repository';
import {validateCredentials} from '../services/validator';
import {
post,
put,
param,
get,
requestBody,
HttpErrors,
getModelSchemaRef,
} from '@loopback/rest';
import {User, Product} from '../models';
import {UserRepository} from '../repositories';
import {RecommenderService} from '../services/recommender.service';
import {inject} from '@loopback/core';
import {
authenticate,
TokenService,
UserService,
} from '@loopback/authentication';
import {authorize} from '@loopback/authorization';
import {UserProfile, securityId, SecurityBindings} from '@loopback/security';
import {
CredentialsRequestBody,
UserProfileSchema,
} from './specs/user-controller.specs';
import {Credentials} from '../repositories/user.repository';
import {PasswordHasher} from '../services/hash.password.bcryptjs';
import {
TokenServiceBindings,
PasswordHasherBindings,
UserServiceBindings,
} from '../keys';
import _ from 'lodash';
import {OPERATION_SECURITY_SPEC} from '../utils/security-spec';
import {basicAuthorization} from '../services/basic.authorizor';
@model()
export class NewUserRequest extends User {
@property({
type: 'string',
required: true,
})
password: string;
}
export class UserController {
constructor(
@repository(UserRepository) public userRepository: UserRepository,
@inject('services.RecommenderService')
public recommender: RecommenderService,
@inject(PasswordHasherBindings.PASSWORD_HASHER)
public passwordHasher: PasswordHasher,
@inject(TokenServiceBindings.TOKEN_SERVICE)
public jwtService: TokenService,
@inject(UserServiceBindings.USER_SERVICE)
public userService: UserService<User, Credentials>,
) {}
@post('/users', {
responses: {
'200': {
description: 'User',
content: {
'application/json': {
schema: {
'x-ts-type': User,
},
},
},
},
},
})
async create(
@requestBody({
content: {
'application/json': {
schema: getModelSchemaRef(NewUserRequest, {
title: 'NewUser',
}),
},
},
})
newUserRequest: NewUserRequest,
): Promise<User> {
// All new users have the "customer" role by default
newUserRequest.roles = ['customer'];
// ensure a valid email value and password value
validateCredentials(_.pick(newUserRequest, ['email', 'password']));
// encrypt the password
const password = await this.passwordHasher.hashPassword(
newUserRequest.password,
);
try {
// create the new user
const savedUser = await this.userRepository.create(
_.omit(newUserRequest, 'password'),
);
// set the password
await this.userRepository
.userCredentials(savedUser.id)
.create({password});
return savedUser;
} catch (error) {
// MongoError 11000 duplicate key
if (error.code === 11000 && error.errmsg.includes('index: uniqueEmail')) {
throw new HttpErrors.Conflict('Email value is already taken');
} else {
throw error;
}
}
}
@put('/users/{userId}', {
security: OPERATION_SECURITY_SPEC,
responses: {
'200': {
description: 'User',
content: {
'application/json': {
schema: {
'x-ts-type': User,
},
},
},
},
},
})
@authenticate('jwt')
@authorize({
allowedRoles: ['admin', 'customer'],
voters: [basicAuthorization],
})
async set(
@inject(SecurityBindings.USER)
currentUserProfile: UserProfile,
@param.path.string('userId') userId: string,
@requestBody({description: 'update user'}) user: User,
): Promise<void> {
try {
// Only admin can assign roles
if (!currentUserProfile.roles.includes('admin')) {
delete user.roles;
}
const updatedUser = await this.userRepository.updateById(userId, user);
return updatedUser;
} catch (e) {
return e;
}
}
@get('/users/{userId}', {
security: OPERATION_SECURITY_SPEC,
responses: {
'200': {
description: 'User',
content: {
'application/json': {
schema: {
'x-ts-type': User,
},
},
},
},
},
})
@authenticate('jwt')
@authorize({
allowedRoles: ['admin', 'support', 'customer'],
voters: [basicAuthorization],
})
async findById(@param.path.string('userId') userId: string): Promise<User> {
return this.userRepository.findById(userId);
}
@get('/users/me', {
security: OPERATION_SECURITY_SPEC,
responses: {
'200': {
description: 'The current user profile',
content: {
'application/json': {
schema: UserProfileSchema,
},
},
},
},
})
@authenticate('jwt')
async printCurrentUser(
@inject(SecurityBindings.USER)
currentUserProfile: UserProfile,
): Promise<User> {
// (@jannyHou)FIXME: explore a way to generate OpenAPI schema
// for symbol property
const userId = currentUserProfile[securityId];
return this.userRepository.findById(userId);
}
@get('/users/{userId}/recommend', {
responses: {
'200': {
description: 'Products',
content: {
'application/json': {
schema: {
type: 'array',
items: {
'x-ts-type': Product,
},
},
},
},
},
},
})
async productRecommendations(
@param.path.string('userId') userId: string,
): Promise<Product[]> {
return this.recommender.getProductRecommendations(userId);
}
@post('/users/login', {
responses: {
'200': {
description: 'Token',
content: {
'application/json': {
schema: {
type: 'object',
properties: {
token: {
type: 'string',
},
},
},
},
},
},
},
})
async login(
@requestBody(CredentialsRequestBody) credentials: Credentials,
): Promise<{token: string}> {
// ensure the user exists, and the password is correct
const user = await this.userService.verifyCredentials(credentials);
// convert a User object into a UserProfile object (reduced set of properties)
const userProfile = this.userService.convertToUserProfile(user);
// create a JSON Web Token based on the user profile
const token = await this.jwtService.generateToken(userProfile);
return {token};
}
}