work on book auctions architecture

books-service/appsync.d.ts

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+export type Maybe<T> = T | null;
+export type InputMaybe<T> = Maybe<T>;
+export type Exact<T extends { [key: string]: unknown }> = { [K in keyof T]: T[K] };
+export type MakeOptional<T, K extends keyof T> = Omit<T, K> & { [SubKey in K]?: Maybe<T[SubKey]> };
+export type MakeMaybe<T, K extends keyof T> = Omit<T, K> & { [SubKey in K]: Maybe<T[SubKey]> };
+/** All built-in and custom scalars, mapped to their actual values */
+export type Scalars = {
+  ID: string;
+  String: string;
+  Boolean: boolean;
+  Int: number;
+  Float: number;
+  AWSDate: string;
+  AWSDateTime: string;
+  AWSEmail: string;
+  AWSIPAddress: string;
+  AWSJSON: string;
+  AWSPhone: string;
+  AWSTime: string;
+  AWSTimestamp: number;
+  AWSURL: string;
+};
+
+export type Book = {
+  __typename?: 'Book';
+  author: Scalars['String'];
+  bookId: Scalars['ID'];
+  createdAt: Scalars['AWSDateTime'];
+  description?: Maybe<Scalars['String']>;
+  imageUrl?: Maybe<Scalars['AWSURL']>;
+  price: Scalars['Float'];
+  title: Scalars['String'];
+  updatedAt: Scalars['AWSDateTime'];
+};
+
+export type BookInput = {
+  author: Scalars['String'];
+  description?: InputMaybe<Scalars['String']>;
+  imageUrl?: InputMaybe<Scalars['AWSURL']>;
+  price: Scalars['Float'];
+  title: Scalars['String'];
+};
+
+export type BooksPage = {
+  __typename?: 'BooksPage';
+  books?: Maybe<Array<Maybe<Book>>>;
+  nextToken?: Maybe<Scalars['String']>;
+};
+
+export type Mutation = {
+  __typename?: 'Mutation';
+  createBook: Book;
+  createOrder: Scalars['Boolean'];
+};
+
+
+export type MutationCreateBookArgs = {
+  newBook?: InputMaybe<BookInput>;
+};
+
+
+export type MutationCreateOrderArgs = {
+  newOrder?: InputMaybe<OrderInput>;
+};
+
+export type OrderInput = {
+  items?: InputMaybe<Array<InputMaybe<OrderItemInput>>>;
+};
+
+export type OrderItem = {
+  __typename?: 'OrderItem';
+  book: Book;
+  orderId: Scalars['ID'];
+  quantity: Scalars['Int'];
+  userId: Scalars['ID'];
+};
+
+export type OrderItemInput = {
+  bookId: Scalars['ID'];
+  quantity: Scalars['Int'];
+};
+
+export type OrderItemsPage = {
+  __typename?: 'OrderItemsPage';
+  OrderItems?: Maybe<Array<Maybe<OrderItem>>>;
+  nextToken?: Maybe<Scalars['String']>;
+};
+
+export type Query = {
+  __typename?: 'Query';
+  getBookById: Book;
+  listBooks: BooksPage;
+  myOrders: OrderItemsPage;
+};
+
+
+export type QueryGetBookByIdArgs = {
+  bookId: Scalars['ID'];
+};
+
+
+export type QueryListBooksArgs = {
+  limit: Scalars['Int'];
+  nextToken?: InputMaybe<Scalars['String']>;
+};
+
+
+export type QueryMyOrdersArgs = {
+  limit: Scalars['Int'];
+  nextToken?: InputMaybe<Scalars['String']>;
+};

books-service/appsync.graphql

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+scalar AWSDate
+scalar AWSTime
+scalar AWSDateTime
+scalar AWSTimestamp
+scalar AWSEmail
+scalar AWSJSON
+scalar AWSURL
+scalar AWSPhone
+scalar AWSIPAddress

books-service/codegen.yml

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+overwrite: true
+
+schema:
+  - schema.graphql
+  - appsync.graphql # 👈 add this
+
+generates:
+  appsync.d.ts:
+    plugins:
+      - typescript
+
+# and this 👇
+config:
+  scalars:
+    AWSJSON: string
+    AWSDate: string
+    AWSTime: string
+    AWSDateTime: string
+    AWSTimestamp: number
+    AWSEmail: string
+    AWSURL: string
+    AWSPhone: string
+    AWSIPAddress: string

books-service/mapping-templates/Mutation.createBook.request.vtl

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+{
+    "version" : "2017-02-28",
+    "operation" : "PutItem",
+    "key": {
+        "bookId" : $util.dynamodb.toDynamoDBJson($util.autoId())
+    },
+    "attributeValues" : {
+        "Title" : $util.dynamodb.toDynamoDBJson($ctx.args.newBook.title),
+        "Description": $util.dynamodb.toDynamoDBJson($ctx.args.newBook.description),
+        "ImageUrl": $util.dynamodb.toDynamoDBJson($ctx.args.newBook.imageUrl),
+        "Author": $util.dynamodb.toDynamoDBJson($ctx.args.newBook.author),
+        "Price": $util.dynamodb.toDynamoDBJson($ctx.args.newBook.price),
+        "CreatedAt": $util.dynamodb.toDynamoDBJson($util.time.nowISO8601()),
+        "UpdatedAt": $util.dynamodb.toDynamoDBJson($util.time.nowISO8601())
+    }
+}

books-service/mapping-templates/Mutation.createBook.response.vtl

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+$util.toJson($ctx.result)

books-service/mapping-templates/Query.getBookById.request.vtl

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+{
+    "version" : "2017-02-28",
+    "operation" : "GetItem",
+    "key" : {
+        "BookId" : $util.dynamodb.toDynamoDBJson($ctx.args.bookId)
+    }
+}

books-service/mapping-templates/Query.getBookById.response.vtl

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+$util.toJson($ctx.result)

books-service/mapping-templates/Query.listBooks.request.vtl

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+{
+    "version" : "2017-02-28",
+    "operation" : "Scan",
+    "limit" : $util.toJson($context.arguments.limit),
+    "nextToken" : $util.toJson($context.arguments.nextToken)
+}

books-service/mapping-templates/Query.listBooks.response.vtl

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+{
+   "books": $util.toJson($context.result.items),
+   "nextToken": $util.toJson($util.defaultIfNullOrBlank($context.result.nextToken, null))
+}