Full Code of benawad/type-graphql-series for AI

Repository: benawad/type-graphql-series
Branch: master
Commit: 768d12cc9e35
Files: 42
Total size: 26.6 KB

Directory structure:
gitextract__c9f4m58/

├── .gitignore
├── README.md
├── jest.config.js
├── ormconfig.json
├── package.json
├── src/
│   ├── entity/
│   │   ├── Author.ts
│   │   ├── AuthorBook.ts
│   │   ├── Book.ts
│   │   ├── Product.ts
│   │   └── User.ts
│   ├── index.ts
│   ├── modules/
│   │   ├── author-book/
│   │   │   └── AuthorBookResolver.ts
│   │   ├── constants/
│   │   │   └── redisPrefixes.ts
│   │   ├── middleware/
│   │   │   ├── isAuth.ts
│   │   │   └── logger.ts
│   │   ├── shared/
│   │   │   ├── OkMixin.ts
│   │   │   └── PasswordInput.ts
│   │   ├── user/
│   │   │   ├── ChangePassword.ts
│   │   │   ├── ConfirmUser.ts
│   │   │   ├── CreateUser.ts
│   │   │   ├── ForgotPassword.ts
│   │   │   ├── Login.ts
│   │   │   ├── Logout.ts
│   │   │   ├── Me.ts
│   │   │   ├── ProfilePicture.ts
│   │   │   ├── Register.ts
│   │   │   ├── changePassword/
│   │   │   │   └── ChangePasswordInput.ts
│   │   │   ├── me/
│   │   │   │   └── Me.test.ts
│   │   │   └── register/
│   │   │       ├── Register.test.ts
│   │   │       ├── RegisterInput.ts
│   │   │       └── isEmailAlreadyExist.ts
│   │   └── utils/
│   │       ├── createConfirmationUrl.ts
│   │       └── sendEmail.ts
│   ├── redis.ts
│   ├── test-utils/
│   │   ├── gCall.ts
│   │   ├── setup.ts
│   │   └── testConn.ts
│   ├── types/
│   │   ├── MyContext.ts
│   │   └── Upload.ts
│   └── utils/
│       ├── authorsLoader.ts
│       └── createSchema.ts
└── tsconfig.json

================================================
FILE CONTENTS
================================================

================================================
FILE: .gitignore
================================================
node_modules
images
*.logs

================================================
FILE: README.md
================================================
# type-graphql-series

Code for: https://www.youtube.com/playlist?list=PLN3n1USn4xlma1bBu3Tloe4NyYn9Ko8Gs

# Installing

1. Clone and install dependecies
```
git clone https://github.com/benawad/type-graphql-series.git
cd type-graphql-series
yarn
```
2. Make sure you have PostgreSQL running on your computer with a database called `typegraphql-example` and a user who has access to that database with the username `postgres` and password `postgres`
* Mac: https://www.codementor.io/engineerapart/getting-started-with-postgresql-on-mac-osx-are8jcopb
* Windows: https://www.guru99.com/download-install-postgresql.html
* Docker: https://www.youtube.com/watch?v=G3gnMSyX-XM
* Linux: you know what you're doing
* How to create a user: https://medium.com/coding-blocks/creating-user-database-and-adding-access-on-postgresql-8bfcd2f4a91e

3. Make sure you have Redis running on your computer
* Mac: https://medium.com/@petehouston/install-and-config-redis-on-mac-os-x-via-homebrew-eb8df9a4f298
* Windows: https://redislabs.com/blog/redis-on-windows-10/
* Linux: you know what you're doing

4. Start the server
```
yarn start
```
To verified it worked, you can go to http://localhost:4000

If you need any help setting this up feel free to message me on Discord: https://discord.gg/Vehs99V


================================================
FILE: jest.config.js
================================================
module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'node',
};

================================================
FILE: ormconfig.json
================================================
{
  "name": "default",
  "type": "postgres",
  "host": "localhost",
  "port": 5432,
  "username": "postgres",
  "password": "postgres",
  "database": "typegraphql-example",
  "synchronize": true,
  "logging": true,
  "entities": ["src/entity/*.*"]
}


================================================
FILE: package.json
================================================
{
  "name": "type-graphql-series",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
    "apollo-server-express": "^2.3.1",
    "bcryptjs": "^2.4.3",
    "class-validator": "^0.9.1",
    "connect-redis": "^3.4.0",
    "cors": "^2.8.5",
    "dataloader": "^1.4.0",
    "express": "^4.16.4",
    "express-session": "^1.15.6",
    "graphql": "^14.0.2",
    "graphql-query-complexity": "^0.2.2",
    "ioredis": "^4.3.0",
    "nodemailer": "^5.1.1",
    "pg": "^7.7.1",
    "reflect-metadata": "^0.1.12",
    "type-graphql": "^0.16.0",
    "typeorm": "^0.2.11",
    "uuid": "^3.3.2"
  },
  "devDependencies": {
    "@types/bcryptjs": "^2.4.2",
    "@types/connect-redis": "^0.0.8",
    "@types/cors": "^2.8.4",
    "@types/express": "^4.16.0",
    "@types/express-session": "^1.15.11",
    "@types/faker": "^4.1.4",
    "@types/graphql": "^14.0.4",
    "@types/ioredis": "^4.0.4",
    "@types/jest": "^23.3.12",
    "@types/node": "^10.12.18",
    "@types/nodemailer": "^4.6.5",
    "@types/uuid": "^3.4.4",
    "faker": "^4.1.0",
    "jest": "^23.6.0",
    "nodemon": "^1.18.9",
    "ts-jest": "^23.10.5",
    "ts-node": "^7.0.1",
    "ts-node-dev": "^1.0.0-pre.32",
    "typescript": "^3.2.2"
  },
  "scripts": {
    "start": "ts-node-dev --respawn src/index.ts",
    "db:setup": "ts-node ./src/test-utils/setup.ts",
    "test": "npm run db:setup && jest"
  }
}


================================================
FILE: src/entity/Author.ts
================================================
import { Field, ID, ObjectType } from "type-graphql";
import {
  BaseEntity,
  Column,
  Entity,
  OneToMany,
  PrimaryGeneratedColumn
} from "typeorm";
import { AuthorBook } from "./AuthorBook";

@ObjectType()
@Entity()
export class Author extends BaseEntity {
  @Field(() => ID)
  @PrimaryGeneratedColumn()
  id: number;

  @Field()
  @Column()
  name: string;

  @OneToMany(() => AuthorBook, ab => ab.author)
  bookConnection: Promise<AuthorBook[]>;
}


================================================
FILE: src/entity/AuthorBook.ts
================================================
import {
  BaseEntity,
  Entity,
  JoinColumn,
  ManyToOne,
  PrimaryColumn
} from "typeorm";
import { Author } from "./Author";
import { Book } from "./Book";

@Entity()
export class AuthorBook extends BaseEntity {
  @PrimaryColumn()
  authorId: number;

  @PrimaryColumn()
  bookId: number;

  @ManyToOne(() => Author, author => author.bookConnection, { primary: true })
  @JoinColumn({ name: "authorId" })
  author: Promise<Author>;

  @ManyToOne(() => Book, book => book.authorConnection, {
    primary: true
  })
  @JoinColumn({ name: "bookId" })
  book: Promise<Book>;
}


================================================
FILE: src/entity/Book.ts
================================================
import { Ctx, Field, ID, ObjectType } from "type-graphql";
import {
  BaseEntity,
  Column,
  Entity,
  OneToMany,
  PrimaryGeneratedColumn
} from "typeorm";
import { MyContext } from "../types/MyContext";
import { Author } from "./Author";
import { AuthorBook } from "./AuthorBook";

@ObjectType()
@Entity()
export class Book extends BaseEntity {
  @Field(() => ID)
  @PrimaryGeneratedColumn()
  id: number;

  @Field()
  @Column()
  name: string;

  @OneToMany(() => AuthorBook, ab => ab.book)
  authorConnection: Promise<AuthorBook[]>;

  @Field(() => [Author])
  async authors(@Ctx() { authorsLoader }: MyContext): Promise<Author[]> {
    return authorsLoader.load(this.id);
  }
}


================================================
FILE: src/entity/Product.ts
================================================
import { Entity, PrimaryGeneratedColumn, Column, BaseEntity } from "typeorm";
import { ObjectType, Field, ID } from "type-graphql";

@ObjectType()
@Entity()
export class Product extends BaseEntity {
  @Field(() => ID)
  @PrimaryGeneratedColumn()
  id: number;

  @Field()
  @Column()
  name: string;
}


================================================
FILE: src/entity/User.ts
================================================
import { Entity, PrimaryGeneratedColumn, Column, BaseEntity } from "typeorm";
import { ObjectType, Field, ID, Root } from "type-graphql";

@ObjectType()
@Entity()
export class User extends BaseEntity {
  @Field(() => ID)
  @PrimaryGeneratedColumn()
  id: number;

  @Field()
  @Column()
  firstName: string;

  @Field()
  @Column()
  lastName: string;

  @Field()
  @Column("text", { unique: true })
  email: string;

  @Field({ complexity: 3 })
  name(@Root() parent: User): string {
    return `${parent.firstName} ${parent.lastName}`;
  }

  @Column()
  password: string;

  @Column("bool", { default: false })
  confirmed: boolean;
}


================================================
FILE: src/index.ts
================================================
import { ApolloServer } from "apollo-server-express";
import connectRedis from "connect-redis";
import cors from "cors";
import Express from "express";
import session from "express-session";
import "reflect-metadata";
import { formatArgumentValidationError } from "type-graphql";
import { createConnection } from "typeorm";
import { redis } from "./redis";
import { createAuthorsLoader } from "./utils/authorsLoader";
import { createSchema } from "./utils/createSchema";

const main = async () => {
  await createConnection();

  const schema = await createSchema();

  const apolloServer = new ApolloServer({
    schema,
    formatError: formatArgumentValidationError,
    context: ({ req, res }: any) => ({
      req,
      res,
      authorsLoader: createAuthorsLoader()
    }),
    validationRules: [
      // queryComplexity({
      //   // The maximum allowed query complexity, queries above this threshold will be rejected
      //   maximumComplexity: 8,
      //   // The query variables. This is needed because the variables are not available
      //   // in the visitor of the graphql-js library
      //   variables: {},
      //   // Optional callback function to retrieve the determined query complexity
      //   // Will be invoked weather the query is rejected or not
      //   // This can be used for logging or to implement rate limiting
      //   onComplete: (complexity: number) => {
      //     console.log("Query Complexity:", complexity);
      //   },
      //   estimators: [
      //     // Using fieldConfigEstimator is mandatory to make it work with type-graphql
      //     fieldConfigEstimator(),
      //     // This will assign each field a complexity of 1 if no other estimator
      //     // returned a value. We can define the default value for field not explicitly annotated
      //     simpleEstimator({
      //       defaultComplexity: 1
      //     })
      //   ]
      // }) as any
    ]
  });

  const app = Express();

  const RedisStore = connectRedis(session);

  app.use(
    cors({
      credentials: true,
      origin: "http://localhost:3000"
    })
  );

  app.use(
    session({
      store: new RedisStore({
        client: redis as any
      }),
      name: "qid",
      secret: "aslkdfjoiq12312",
      resave: false,
      saveUninitialized: false,
      cookie: {
        httpOnly: true,
        secure: process.env.NODE_ENV === "production",
        maxAge: 1000 * 60 * 60 * 24 * 7 * 365 // 7 years
      }
    })
  );

  apolloServer.applyMiddleware({ app, cors: false });

  app.listen(4000, () => {
    console.log("server started on http://localhost:4000/graphql");
  });
};

main().catch(err => console.error(err));


================================================
FILE: src/modules/author-book/AuthorBookResolver.ts
================================================
import { Arg, Int, Mutation, Query, Resolver } from "type-graphql";
import { Author } from "../../entity/Author";
import { AuthorBook } from "../../entity/AuthorBook";
import { Book } from "../../entity/Book";

@Resolver()
export class AuthorBookResolver {
  @Mutation(() => Book)
  async createBook(@Arg("name") name: string) {
    return Book.create({ name }).save();
  }

  @Mutation(() => Author)
  async createAuthor(@Arg("name") name: string) {
    return Author.create({ name }).save();
  }

  @Mutation(() => Boolean)
  async addAuthorBook(
    @Arg("authorId", () => Int) authorId: number,
    @Arg("bookId", () => Int) bookId: number
  ) {
    await AuthorBook.create({ authorId, bookId }).save();
    return true;
  }

  @Mutation(() => Boolean)
  async deleteBook(@Arg("bookId", () => Int) bookId: number) {
    await AuthorBook.delete({ bookId });
    await Book.delete({ id: bookId });
    return true;
  }

  @Query(() => [Book])
  async books() {
    return Book.find();
  }
}


================================================
FILE: src/modules/constants/redisPrefixes.ts
================================================
export const confirmUserPrefix = "user-confirmation:";
export const forgotPasswordPrefix = "forgot-password:";


================================================
FILE: src/modules/middleware/isAuth.ts
================================================
import { MiddlewareFn } from "type-graphql";

import { MyContext } from "../../types/MyContext";

export const isAuth: MiddlewareFn<MyContext> = async ({ context }, next) => {
  if (!context.req.session!.userId) {
    throw new Error("not authenticated");
  }

  return next();
};


================================================
FILE: src/modules/middleware/logger.ts
================================================
import { MiddlewareFn } from "type-graphql";

import { MyContext } from "../../types/MyContext";

export const logger: MiddlewareFn<MyContext> = async ({ args }, next) => {
  console.log("args: ", args);

  return next();
};


================================================
FILE: src/modules/shared/OkMixin.ts
================================================
import { ClassType, Field, InputType } from "type-graphql";

export const OkMixin = <T extends ClassType>(BaseClass: T) => {
  @InputType()
  class OkInput extends BaseClass {
    @Field()
    ok: boolean;
  }
  return OkInput;
};


================================================
FILE: src/modules/shared/PasswordInput.ts
================================================
import { MinLength } from "class-validator";
import { Field, InputType, ClassType } from "type-graphql";

export const PasswordMixin = <T extends ClassType>(BaseClass: T) => {
  @InputType()
  class PasswordInput extends BaseClass {
    @Field()
    @MinLength(5)
    password: string;
  }
  return PasswordInput;
};


================================================
FILE: src/modules/user/ChangePassword.ts
================================================
import { Resolver, Mutation, Arg, Ctx } from "type-graphql";
import bcrypt from "bcryptjs";

import { User } from "../../entity/User";
import { redis } from "../../redis";
import { forgotPasswordPrefix } from "../constants/redisPrefixes";
import { ChangePasswordInput } from "./changePassword/ChangePasswordInput";
import { MyContext } from "../../types/MyContext";

@Resolver()
export class ChangePasswordResolver {
  @Mutation(() => User, { nullable: true })
  async changePassword(
    @Arg("data")
    { token, password }: ChangePasswordInput,
    @Ctx() ctx: MyContext
  ): Promise<User | null> {
    const userId = await redis.get(forgotPasswordPrefix + token);

    if (!userId) {
      return null;
    }

    const user = await User.findOne(userId);

    if (!user) {
      return null;
    }

    await redis.del(forgotPasswordPrefix + token);

    user.password = await bcrypt.hash(password, 12);

    await user.save();

    ctx.req.session!.userId = user.id;

    return user;
  }
}


================================================
FILE: src/modules/user/ConfirmUser.ts
================================================
import { Resolver, Mutation, Arg } from "type-graphql";

import { redis } from "../../redis";
import { User } from "../../entity/User";
import { confirmUserPrefix } from "../constants/redisPrefixes";

@Resolver()
export class ConfirmUserResolver {
  @Mutation(() => Boolean)
  async confirmUser(@Arg("token") token: string): Promise<boolean> {
    const userId = await redis.get(confirmUserPrefix + token);

    if (!userId) {
      return false;
    }

    await User.update({ id: parseInt(userId, 10) }, { confirmed: true });
    await redis.del(token);

    return true;
  }
}


================================================
FILE: src/modules/user/CreateUser.ts
================================================
import {
  Resolver,
  Mutation,
  Arg,
  ClassType,
  InputType,
  Field,
  UseMiddleware
} from "type-graphql";
import { RegisterInput } from "./register/RegisterInput";
import { User } from "../../entity/User";
import { Product } from "../../entity/Product";
import { Middleware } from "type-graphql/interfaces/Middleware";

function createResolver<T extends ClassType, X extends ClassType>(
  suffix: string,
  returnType: T,
  inputType: X,
  entity: any,
  middleware?: Middleware<any>[]
) {
  @Resolver()
  class BaseResolver {
    @Mutation(() => returnType, { name: `create${suffix}` })
    @UseMiddleware(...(middleware || []))
    async create(@Arg("data", () => inputType) data: any) {
      return entity.create(data).save();
    }
  }

  return BaseResolver;
}

@InputType()
class ProductInput {
  @Field()
  name: string;
}

export const CreateUserResolver = createResolver(
  "User",
  User,
  RegisterInput,
  User
);
export const CreateProductResolver = createResolver(
  "Product",
  Product,
  ProductInput,
  Product
);


================================================
FILE: src/modules/user/ForgotPassword.ts
================================================
import { Resolver, Mutation, Arg } from "type-graphql";
import { v4 } from "uuid";

import { sendEmail } from "../utils/sendEmail";
import { User } from "../../entity/User";
import { redis } from "../../redis";
import { forgotPasswordPrefix } from "../constants/redisPrefixes";

@Resolver()
export class ForgotPasswordResolver {
  @Mutation(() => Boolean)
  async forgotPassword(@Arg("email") email: string): Promise<boolean> {
    const user = await User.findOne({ where: { email } });

    if (!user) {
      return true;
    }

    const token = v4();
    await redis.set(forgotPasswordPrefix + token, user.id, "ex", 60 * 60 * 24); // 1 day expiration

    await sendEmail(
      email,
      `http://localhost:3000/user/change-password/${token}`
    );

    return true;
  }
}


================================================
FILE: src/modules/user/Login.ts
================================================
import bcrypt from "bcryptjs";
import { Arg, Ctx, Mutation, Resolver } from "type-graphql";
import { User } from "../../entity/User";
import { MyContext } from "../../types/MyContext";

@Resolver()
export class LoginResolver {
  @Mutation(() => User, { nullable: true })
  async login(
    @Arg("email") email: string,
    @Arg("password") password: string,
    @Ctx() ctx: MyContext
  ): Promise<User | null> {
    const user = await User.findOne({ where: { email } });

    if (!user) {
      return null;
    }

    const valid = await bcrypt.compare(password, user.password);

    if (!valid) {
      return null;
    }

    if (!user.confirmed) {
      return null;
    }

    ctx.req.session!.userId = user.id;

    return user;
  }
}


================================================
FILE: src/modules/user/Logout.ts
================================================
import { Resolver, Mutation, Ctx } from "type-graphql";
import { MyContext } from "../../types/MyContext";

@Resolver()
export class LogoutResolver {
  @Mutation(() => Boolean)
  async logout(@Ctx() ctx: MyContext): Promise<Boolean> {
    return new Promise((res, rej) =>
      ctx.req.session!.destroy(err => {
        if (err) {
          console.log(err);
          return rej(false);
        }

        ctx.res.clearCookie("qid");
        return res(true);
      })
    );
  }
}


================================================
FILE: src/modules/user/Me.ts
================================================
import { Resolver, Query, Ctx } from "type-graphql";

import { User } from "../../entity/User";
import { MyContext } from "../../types/MyContext";

@Resolver()
export class MeResolver {
  @Query(() => User, { nullable: true, complexity: 5 })
  async me(@Ctx() ctx: MyContext): Promise<User | undefined> {
    if (!ctx.req.session!.userId) {
      return undefined;
    }

    return User.findOne(ctx.req.session!.userId);
  }
}


================================================
FILE: src/modules/user/ProfilePicture.ts
================================================
import { Resolver, Mutation, Arg } from "type-graphql";
import { GraphQLUpload } from "graphql-upload";
import { createWriteStream } from "fs";

import { Upload } from "../../types/Upload";

@Resolver()
export class ProfilePictureResolver {
  @Mutation(() => Boolean)
  async addProfilePicture(@Arg("picture", () => GraphQLUpload)
  {
    createReadStream,
    filename
  }: Upload): Promise<boolean> {
    return new Promise(async (resolve, reject) =>
      createReadStream()
        .pipe(createWriteStream(__dirname + `/../../../images/${filename}`))
        .on("finish", () => resolve(true))
        .on("error", () => reject(false))
    );
  }
}


================================================
FILE: src/modules/user/Register.ts
================================================
import { Resolver, Query, Mutation, Arg, UseMiddleware } from "type-graphql";
import bcrypt from "bcryptjs";

import { User } from "../../entity/User";
import { RegisterInput } from "./register/RegisterInput";
import { isAuth } from "../middleware/isAuth";
import { logger } from "../middleware/logger";
import { sendEmail } from "../utils/sendEmail";
import { createConfirmationUrl } from "../utils/createConfirmationUrl";

@Resolver()
export class RegisterResolver {
  @UseMiddleware(isAuth, logger)
  @Query(() => String)
  async hello() {
    return "Hello World!";
  }

  @Mutation(() => User)
  async register(@Arg("data")
  {
    email,
    firstName,
    lastName,
    password
  }: RegisterInput): Promise<User> {
    const hashedPassword = await bcrypt.hash(password, 12);

    const user = await User.create({
      firstName,
      lastName,
      email,
      password: hashedPassword
    }).save();

    await sendEmail(email, await createConfirmationUrl(user.id));

    return user;
  }
}


================================================
FILE: src/modules/user/changePassword/ChangePasswordInput.ts
================================================
import { Field, InputType } from "type-graphql";
import { PasswordMixin } from "../../shared/PasswordInput";

@InputType()
export class ChangePasswordInput extends PasswordMixin(class {}) {
  @Field()
  token: string;
}


================================================
FILE: src/modules/user/me/Me.test.ts
================================================
import { Connection } from "typeorm";
import faker from "faker";

import { testConn } from "../../../test-utils/testConn";
import { gCall } from "../../../test-utils/gCall";
import { User } from "../../../entity/User";

let conn: Connection;
beforeAll(async () => {
  conn = await testConn();
});
afterAll(async () => {
  await conn.close();
});

const meQuery = `
 {
  me {
    id
    firstName
    lastName
    email
    name
  }
}
`;

describe("Me", () => {
  it("get user", async () => {
    const user = await User.create({
      firstName: faker.name.firstName(),
      lastName: faker.name.lastName(),
      email: faker.internet.email(),
      password: faker.internet.password()
    }).save();

    const response = await gCall({
      source: meQuery,
      userId: user.id
    });

    expect(response).toMatchObject({
      data: {
        me: {
          id: `${user.id}`,
          firstName: user.firstName,
          lastName: user.lastName,
          email: user.email
        }
      }
    });
  });

  it("return null", async () => {
    const response = await gCall({
      source: meQuery
    });

    expect(response).toMatchObject({
      data: {
        me: null
      }
    });
  });
});


================================================
FILE: src/modules/user/register/Register.test.ts
================================================
import faker from "faker";
import { Connection } from "typeorm";
import { User } from "../../../entity/User";
import { gCall } from "../../../test-utils/gCall";
import { testConn } from "../../../test-utils/testConn";

let conn: Connection;
beforeAll(async () => {
  conn = await testConn();
});
afterAll(async () => {
  await conn.close();
});

const registerMutation = `
mutation Register($data: RegisterInput!) {
  register(
    data: $data
  ) {
    id
    firstName
    lastName
    email
    name
  }
}
`;

describe("Register", () => {
  it.only("create user", async () => {
    const user = {
      firstName: faker.name.firstName(),
      lastName: faker.name.lastName(),
      email: faker.internet.email(),
      password: faker.internet.password()
    };

    const response = await gCall({
      source: registerMutation,
      variableValues: {
        data: user
      }
    });

    if (response.errors) {
      console.log(response.errors[0].originalError);
    }

    expect(response).toMatchObject({
      data: {
        register: {
          firstName: user.firstName,
          lastName: user.lastName,
          email: user.email
        }
      }
    });

    const dbUser = await User.findOne({ where: { email: user.email } });
    expect(dbUser).toBeDefined();
    expect(dbUser!.confirmed).toBeFalsy();
    expect(dbUser!.firstName).toBe(user.firstName);
  });
});


================================================
FILE: src/modules/user/register/RegisterInput.ts
================================================
import { Length, IsEmail } from "class-validator";
import { Field, InputType } from "type-graphql";
import { IsEmailAlreadyExist } from "./isEmailAlreadyExist";
import { PasswordMixin } from "../../shared/PasswordInput";

@InputType()
export class RegisterInput extends PasswordMixin(class {}) {
  @Field()
  @Length(1, 255)
  firstName: string;

  @Field()
  @Length(1, 255)
  lastName: string;

  @Field()
  @IsEmail()
  @IsEmailAlreadyExist({ message: "email already in use" })
  email: string;
}


================================================
FILE: src/modules/user/register/isEmailAlreadyExist.ts
================================================
import {
  registerDecorator,
  ValidationOptions,
  ValidatorConstraint,
  ValidatorConstraintInterface
} from "class-validator";

import { User } from "../../../entity/User";

@ValidatorConstraint({ async: true })
export class IsEmailAlreadyExistConstraint
  implements ValidatorConstraintInterface {
  validate(email: string) {
    return User.findOne({ where: { email } }).then(user => {
      if (user) return false;
      return true;
    });
  }
}

export function IsEmailAlreadyExist(validationOptions?: ValidationOptions) {
  return function(object: Object, propertyName: string) {
    registerDecorator({
      target: object.constructor,
      propertyName: propertyName,
      options: validationOptions,
      constraints: [],
      validator: IsEmailAlreadyExistConstraint
    });
  };
}


================================================
FILE: src/modules/utils/createConfirmationUrl.ts
================================================
import { v4 } from "uuid";
import { redis } from "../../redis";
import { confirmUserPrefix } from "../constants/redisPrefixes";

export const createConfirmationUrl = async (userId: number) => {
  const token = v4();
  await redis.set(confirmUserPrefix + token, userId, "ex", 60 * 60 * 24); // 1 day expiration

  return `http://localhost:3000/user/confirm/${token}`;
};


================================================
FILE: src/modules/utils/sendEmail.ts
================================================
import nodemailer from "nodemailer";

export async function sendEmail(email: string, url: string) {
  const account = await nodemailer.createTestAccount();

  const transporter = nodemailer.createTransport({
    host: "smtp.ethereal.email",
    port: 587,
    secure: false, // true for 465, false for other ports
    auth: {
      user: account.user, // generated ethereal user
      pass: account.pass // generated ethereal password
    }
  });

  const mailOptions = {
    from: '"Fred Foo 👻" <foo@example.com>', // sender address
    to: email, // list of receivers
    subject: "Hello ✔", // Subject line
    text: "Hello world?", // plain text body
    html: `<a href="${url}">${url}</a>` // html body
  };

  const info = await transporter.sendMail(mailOptions);

  console.log("Message sent: %s", info.messageId);
  // Preview only available when sending through an Ethereal account
  console.log("Preview URL: %s", nodemailer.getTestMessageUrl(info));
}


================================================
FILE: src/redis.ts
================================================
import Redis from "ioredis";

export const redis = new Redis();


================================================
FILE: src/test-utils/gCall.ts
================================================
import { graphql, GraphQLSchema } from "graphql";
import Maybe from "graphql/tsutils/Maybe";

import { createSchema } from "../utils/createSchema";

interface Options {
  source: string;
  variableValues?: Maybe<{
    [key: string]: any;
  }>;
  userId?: number;
}

let schema: GraphQLSchema;

export const gCall = async ({ source, variableValues, userId }: Options) => {
  if (!schema) {
    schema = await createSchema();
  }
  return graphql({
    schema,
    source,
    variableValues,
    contextValue: {
      req: {
        session: {
          userId
        }
      },
      res: {
        clearCookie: jest.fn()
      }
    }
  });
};


================================================
FILE: src/test-utils/setup.ts
================================================
import { testConn } from "./testConn";

testConn(true).then(() => process.exit());


================================================
FILE: src/test-utils/testConn.ts
================================================
import { createConnection } from "typeorm";

export const testConn = (drop: boolean = false) => {
  return createConnection({
    name: "default",
    type: "postgres",
    host: "localhost",
    port: 5432,
    username: "postgres",
    password: "postgres",
    database: "typegraphql-example-test",
    synchronize: drop,
    dropSchema: drop,
    entities: [__dirname + "/../entity/*.*"]
  });
};


================================================
FILE: src/types/MyContext.ts
================================================
import { Request, Response } from "express";
import { createAuthorsLoader } from "../utils/authorsLoader";

export interface MyContext {
  req: Request;
  res: Response;
  authorsLoader: ReturnType<typeof createAuthorsLoader>;
}


================================================
FILE: src/types/Upload.ts
================================================
import { Stream } from "stream";

export interface Upload {
  filename: string;
  mimetype: string;
  encoding: string;
  createReadStream: () => Stream;
}


================================================
FILE: src/utils/authorsLoader.ts
================================================
import DataLoader from "dataloader";
import { In } from "typeorm";
import { Author } from "../entity/Author";
import { AuthorBook } from "../entity/AuthorBook";

const batchAuthors = async (bookIds: number[]) => {
  const authorBooks = await AuthorBook.find({
    join: {
      alias: "authorBook",
      innerJoinAndSelect: {
        author: "authorBook.author"
      }
    },
    where: {
      bookId: In(bookIds)
    }
  });

  const bookIdToAuthors: { [key: number]: Author[] } = {};

  /*
  {
    authorId: 1,
    bookId: 1,
    __author__: { id: 1, name: 'author1' }
  }
  */
  authorBooks.forEach(ab => {
    if (ab.bookId in bookIdToAuthors) {
      bookIdToAuthors[ab.bookId].push((ab as any).__author__);
    } else {
      bookIdToAuthors[ab.bookId] = [(ab as any).__author__];
    }
  });

  return bookIds.map(bookId => bookIdToAuthors[bookId]);
};

export const createAuthorsLoader = () => new DataLoader(batchAuthors);


================================================
FILE: src/utils/createSchema.ts
================================================
import { buildSchema } from "type-graphql";
import { AuthorBookResolver } from "../modules/author-book/AuthorBookResolver";
import { ChangePasswordResolver } from "../modules/user/ChangePassword";
import { ConfirmUserResolver } from "../modules/user/ConfirmUser";
import {
  CreateProductResolver,
  CreateUserResolver
} from "../modules/user/CreateUser";
import { ForgotPasswordResolver } from "../modules/user/ForgotPassword";
import { LoginResolver } from "../modules/user/Login";
import { LogoutResolver } from "../modules/user/Logout";
import { MeResolver } from "../modules/user/Me";
import { ProfilePictureResolver } from "../modules/user/ProfilePicture";
import { RegisterResolver } from "../modules/user/Register";

export const createSchema = () =>
  buildSchema({
    resolvers: [
      ChangePasswordResolver,
      ConfirmUserResolver,
      ForgotPasswordResolver,
      LoginResolver,
      LogoutResolver,
      MeResolver,
      RegisterResolver,
      CreateUserResolver,
      CreateProductResolver,
      ProfilePictureResolver,
      AuthorBookResolver
    ],
    authChecker: ({ context: { req } }) => {
      return !!req.session.userId;
    }
  });


================================================
FILE: tsconfig.json
================================================
{
  "compilerOptions": {
    "target": "es6",
    "module": "commonjs",
    "lib": ["dom", "es6", "es2017", "esnext.asynciterable"],
    "sourceMap": true,
    "outDir": "./dist",
    "moduleResolution": "node",
    "declaration": false,

    "composite": false,
    "removeComments": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "skipLibCheck": true,
    "baseUrl": ".",
    "rootDir": "src"
  },
  "exclude": ["node_modules"],
  "include": ["./src/**/*.tsx", "./src/**/*.ts"]
}