How to use the koa-swagger-decorator.request function in koa-swagger-decorator

// load user by id
        const user: User = await userRepository.findOne(+ctx.params.id || 0);

        if (user) {
            // return OK status code and loaded user object
            ctx.status = 200;
            ctx.body = user;
        } else {
            // return a BAD REQUEST status code and error message
            ctx.status = 400;
            ctx.body = 'The user you are trying to retrieve doesn\'t exist in the db';
        }

    }

    @request('post', '/users')
    @summary('Create a user')
    @body(userSchema)
    public static async createUser(ctx: BaseContext) {

        // get a user repository to perform operations with user
        const userRepository: Repository = getManager().getRepository(User);

        // build up entity user to be saved
        const userToBeSaved: User = new User();
        userToBeSaved.name = ctx.request.body.name;
        userToBeSaved.email = ctx.request.body.email;

        // validate user entity
        const errors: ValidationError[] = await validate(userToBeSaved); // errors is an array of validation errors

        if (errors.length > 0) {

ctx.status = 400;
            ctx.body = errors;
        } else if (await userRepository.findOne({ email: userToBeSaved.email })) {
            // return BAD REQUEST status code and email already exists error
            ctx.status = 400;
            ctx.body = 'The specified e-mail address already exists';
        } else {
            // save the user contained in the POST body
            const user = await userRepository.save(userToBeSaved);
            // return CREATED status code and updated user
            ctx.status = 201;
            ctx.body = user;
        }
    }

    @request('put', '/users/{id}')
    @summary('Update a user')
    @path({
        id: { type: 'number', required: true, description: 'id of user' }
    })
    @body(userSchema)
    public static async updateUser(ctx: BaseContext) {

        // get a user repository to perform operations with user
        const userRepository: Repository = getManager().getRepository(User);

        // update the user by specified id
        // build up entity user to be updated
        const userToBeUpdated: User = new User();
        userToBeUpdated.id = +ctx.params.id || 0; // will always have a number, this will avoid errors
        userToBeUpdated.name = ctx.request.body.name;
        userToBeUpdated.email = ctx.request.body.email;

import { BaseContext } from 'koa';
import { getManager, Repository, Not, Equal } from 'typeorm';
import { validate, ValidationError } from 'class-validator';
import { request, summary, path, body, responsesAll, tagsAll } from 'koa-swagger-decorator';
import { User, userSchema } from '../entity/user';

@responsesAll({ 200: { description: 'success'}, 400: { description: 'bad request'}, 401: { description: 'unauthorized, missing/wrong jwt token'}})
@tagsAll(['User'])
export default class UserController {

    @request('get', '/users')
    @summary('Find all users')
    public static async getUsers(ctx: BaseContext) {

        // get a user repository to perform operations with user
        const userRepository: Repository = getManager().getRepository(User);

        // load all users
        const users: User[] = await userRepository.find();

        // return OK status code and loaded users array
        ctx.status = 200;
        ctx.body = users;
    }

    @request('get', '/users/{id}')
    @summary('Find user by id')

ctx.body = 'The user you are trying to update doesn\'t exist in the db';
        } else if (await userRepository.findOne({ id: Not(Equal(userToBeUpdated.id)), email: userToBeUpdated.email })) {
            // return BAD REQUEST status code and email already exists error
            ctx.status = 400;
            ctx.body = 'The specified e-mail address already exists';
        } else {
            // save the user contained in the PUT body
            const user = await userRepository.save(userToBeUpdated);
            // return CREATED status code and updated user
            ctx.status = 201;
            ctx.body = user;
        }

    }

    @request('delete', '/users/{id}')
    @summary('Delete user by id')
    @path({
        id: { type: 'number', required: true, description: 'id of user' }
    })
    public static async deleteUser(ctx: BaseContext) {

        // get a user repository to perform operations with user
        const userRepository = getManager().getRepository(User);

        // find the user by specified id
        const userToRemove: User = await userRepository.findOne(+ctx.params.id || 0);
        if (!userToRemove) {
            // return a BAD REQUEST status code and error message
            ctx.status = 400;
            ctx.body = 'The user you are trying to delete doesn\'t exist in the db';
        } else if (+ctx.state.user.id !== userToRemove.id) {

@request('get', '/users')
    @summary('Find all users')
    public static async getUsers(ctx: BaseContext) {

        // get a user repository to perform operations with user
        const userRepository: Repository = getManager().getRepository(User);

        // load all users
        const users: User[] = await userRepository.find();

        // return OK status code and loaded users array
        ctx.status = 200;
        ctx.body = users;
    }

    @request('get', '/users/{id}')
    @summary('Find user by id')
    @path({
        id: { type: 'number', required: true, description: 'id of user' }
    })
    public static async getUser(ctx: BaseContext) {

        // get a user repository to perform operations with user
        const userRepository: Repository = getManager().getRepository(User);

        // load user by id
        const user: User = await userRepository.findOne(+ctx.params.id || 0);

        if (user) {
            // return OK status code and loaded user object
            ctx.status = 200;
            ctx.body = user;

import { request, summary, path, body, responsesAll, tagsAll, tags } from 'koa-swagger-decorator';
import { BaseContext } from 'koa';

@responsesAll({ 200: { description: 'Success'}, 500: { description: 'Server Error'}})
@tagsAll(['ping'])
export default class PingController {
    @request('get', '/ping')
    @summary('test if the server is running')
    public static async pong(ctx: BaseContext) {
        ctx.status = 200;
        ctx.body = 'pong';
    }
}

import { BaseContext } from 'koa';
import { description, request, summary, tagsAll } from 'koa-swagger-decorator';

@tagsAll(['General'])
export default class GeneralController {

    @request('get', '/')
    @summary('Welcome page')
    @description('A simple welcome message to verify the service is up and running.')
    public static async helloWorld(ctx: BaseContext) {
        ctx.body = 'Hello World!';
    }

}