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import {
Controller,
Get,
Route,
Tags,
Post,
Body,
Patch,
Delete,
Path,
Response,
Produces,
} from "tsoa";
import {
Book,
BookStatus,
BorrowBookRequest,
CreateBookRequest,
ReturnBookRequest,
} from "../models/Book";
import { readMyData, writeMyData } from "../utils/fileStorage";
import { wrapResponse, ApiResponse } from "../utils/responseWrapper";
import { v4 as uuidv4 } from "uuid";
import { NotFoundError, BadRequestError } from "../utils/apiErrors";
import { BookValidator } from "../validators/bookValidator";
import { Visitor } from "../models/Visitor";
import { Employee } from "../models/Employee";
import { DateUtils } from "../utils/dateUtils";
import { bookLinkManager } from "../models/Book";
import { Link } from "../models/Link";
@Route("books")
@Tags("Books")
export class BookController extends Controller {
private file = "books.sea";
private visitorsFile = "visitors.sea";
private employeesFile = "employees.sea";
@Get("/")
public async getBooks(): Promise<ApiResponse<Book[]>> {
const books = await readMyData<Book>(this.file);
return wrapResponse(books);
}
@Post("/")
public async addBook(
@Body() body: CreateBookRequest
): Promise<ApiResponse<Book>> {
BookValidator.validate(body);
const books = await readMyData<Book>(this.file);
const newBook: Book = {
id: uuidv4(),
...body,
status: BookStatus.AVAILABLE,
};
books.push(newBook);
await writeMyData(this.file, books);
return wrapResponse(newBook);
}
@Get("/{id}")
public async getBook(id: string): Promise<ApiResponse<Book>> {
const books = await readMyData<Book>(this.file);
const book = books.find((b) => b.id === id);
if (!book) {
throw new NotFoundError(`Book with id ${id} not found`);
}
return wrapResponse(book);
}
@Patch("/{id}")
public async updateBook(
@Path() id: string,
@Body() body: Partial<CreateBookRequest>
): Promise<ApiResponse<Book>> {
BookValidator.validateForUpdate(body);
const books = await readMyData<Book>(this.file);
const bookIndex = books.findIndex((b) => b.id === id);
if (bookIndex === -1) {
throw new NotFoundError(`Book with id ${id} not found`);
}
books[bookIndex] = { ...books[bookIndex], ...body };
await writeMyData(this.file, books);
return wrapResponse(books[bookIndex]);
}
@Delete("/{id}")
public async deleteBook(
@Path() id: string
): Promise<ApiResponse<{ message: string }>> {
const books = await readMyData<Book>(this.file);
const index = books.findIndex((b) => b.id === id);
if (index === -1) {
throw new NotFoundError(`Book with id ${id} not found`);
}
books.splice(index, 1);
await writeMyData(this.file, books);
return wrapResponse({
message: `Book with id ${id} deleted successfully`,
});
}
@Get("/{id}/download")
@Produces("application/json")
public async downloadBook(
@Path() id: string
): Promise<string> {
const book = await this.getBook(id);
return JSON.stringify(book.data, null, 2);
}
@Post("/borrow")
public async borrowBook(
@Body() body: BorrowBookRequest
): Promise<ApiResponse<{ message: string }>> {
const books = await readMyData<Book>(this.file);
const visitors = await readMyData<Visitor>(this.visitorsFile);
const employees = await readMyData<Employee>(this.employeesFile);
const visitorIndex = visitors.findIndex((v) => v.id === body.visitorId);
if (visitorIndex === -1) {
throw new NotFoundError(`Visitor with id ${body.visitorId} not found`);
}
const employee = employees.find((e) => e.id === body.employeeId);
if (!employee) {
throw new NotFoundError(
`Employee with id ${body.employeeId} not found`
);
}
if (!DateUtils.isWorkingDay(body.borrowDate, employee.workDays)) {
throw new BadRequestError("Library is closed on this day");
}
const borrowedBooks: string[] = [];
for (const bookId of body.bookIds) {
const bookIndex = books.findIndex((b) => b.id === bookId);
if (bookIndex === -1) {
throw new NotFoundError(`Book with id ${bookId} not found`);
}
if (books[bookIndex].status === BookStatus.BORROWED) {
throw new BadRequestError(
`Book "${books[bookIndex].title}" is already borrowed`
);
}
books[bookIndex].status = BookStatus.BORROWED;
const bookLink = bookLinkManager.toLink(bookId);
visitors[visitorIndex].currentBooks.push(bookLink);
borrowedBooks.push(bookId);
}
await writeMyData(this.file, books);
await writeMyData(this.visitorsFile, visitors);
return wrapResponse({
message: `Successfully borrowed ${borrowedBooks.length} book(s)`,
});
}
@Post("/return")
public async returnBook(
@Body() body: ReturnBookRequest
): Promise<ApiResponse<{ message: string }>> {
const books = await readMyData<Book>(this.file);
const visitors = await readMyData<Visitor>(this.visitorsFile);
const employees = await readMyData<Employee>(this.employeesFile);
const visitorIndex = visitors.findIndex((v) => v.id === body.visitorId);
if (visitorIndex === -1) {
throw new NotFoundError(`Visitor with id ${body.visitorId} not found`);
}
const employee = employees.find((e) => e.id === body.employeeId);
if (!employee) {
throw new NotFoundError(
`Employee with id ${body.employeeId} not found`
);
}
if (!DateUtils.isWorkingDay(body.returnDate, employee.workDays)) {
throw new BadRequestError("Library is closed on this day");
}
const returnedBooks: string[] = [];
for (const bookId of body.bookIds) {
const bookIndex = books.findIndex((b) => b.id === bookId);
if (bookIndex === -1) {
throw new NotFoundError(`Book with id ${bookId} not found`);
}
if (books[bookIndex].status === BookStatus.AVAILABLE) {
throw new BadRequestError(
`Book "${books[bookIndex].title}" is not borrowed`
);
}
// Ищем Link объект в currentBooks
const linkIndex = visitors[visitorIndex].currentBooks.findIndex(
(link) => (link).id === bookId
);
if (linkIndex === -1) {
throw new BadRequestError(
`Visitor does not have book "${books[bookIndex].title}"`
);
}
books[bookIndex].status = BookStatus.AVAILABLE;
// Удаляем из currentBooks и добавляем в history как Link объект
const bookLink = visitors[visitorIndex].currentBooks.splice(
linkIndex,
1
)[0];
visitors[visitorIndex].history.push(bookLink);
returnedBooks.push(bookId);
}
await writeMyData(this.file, books);
await writeMyData(this.visitorsFile, visitors);
return wrapResponse({
message: `Successfully returned ${returnedBooks.length} book(s)`,
});
}
} |