Controllers/v2/BookController.cs - master - zykovad/PIR_Lab1_E-Library

Controllers/v2/BookController.cs
165 строк8 KB
Darya
Done lab 2
17 окт 2025, 22:38
17 окт 2025, 22:3838ce9ac
using libraryAPI.DataStorage.v2;
using libraryAPI.DTO;
using libraryAPI.Entities.v2;
using Microsoft.AspNetCore.Mvc;
using Swashbuckle.AspNetCore.Annotations;

namespace libraryAPI.Controllers.v2
{
    [ApiController]
    [ApiVersion("2.0")]
    [Route("api/v{version:apiVersion}/[controller]")]
    public class BooksController : ControllerBase
    {
        private readonly Data _data;
        public BooksController(Data data)
        {
            _data = data;
        }

        [HttpGet]
        [SwaggerOperation(Summary = "Получить список всех книг (с пагинацией)",
            Description = "Можно выбрать поля через параметр include (например: ?include=title,authors). Опциональные поля: tytle, isbn, genre, description, publicationyear, publisher, authors.", 
            OperationId = "GetAllBooks")]
        [SwaggerResponse(200, "Список книг успешно получен", typeof(PagedResult<Book_Response>))]
        public IResult GetBooks(int page = 1, int pageSize = 10, [FromQuery] string? include = null)
        {
            // Преобразуем строку include в список
            var includeFields = include?.Split(',').Select(f => f.Trim().ToLower()).ToHashSet() ?? new HashSet<string>();

            var list = _data.Books.ToList();
            var total = list.Count;
            var items = list.Skip((page - 1) * pageSize).Take(pageSize)
                .Select(b => new Book_Response
                {
                    Id = b.Id,
                    Title = includeFields.Count == 0 || includeFields.Contains("title") ? b.Title : null,
                    ISBN = includeFields.Count == 0 || includeFields.Contains("isbn") ? b.ISBN : null,
                    Genre = includeFields.Count == 0 || includeFields.Contains("genre") ? b.Genre : null,
                    Description = includeFields.Count == 0 || includeFields.Contains("description") ? b.Description : null,
                    PublicationYear = includeFields.Count == 0 || includeFields.Contains("publicationyear") ? b.PublicationYear : 0,
                    Publisher = includeFields.Count == 0 || includeFields.Contains("publisher") ? b.Publisher : null,
                    Authors = includeFields.Count == 0 || includeFields.Contains("authors") ? b.AuthorBooks.Select(ab => $"{ab.Author.Surname} {ab.Author.Name}").ToList() : null
                }).ToList();

            var response = new PagedResult<Book_Response>
            {
                Items = items,
                Page = page,
                PageSize = pageSize,
                TotalCount = total
            };

            return Results.Json(response);
        }

        [HttpGet("{id}")]
        [SwaggerOperation(Summary = "Получить книгу по id",
            Description = "Можно выбрать поля через параметр include (например: ?include=title,authors). Опциональные поля: tytle, isbn, genre, description, publicationyear, publisher, authors.", 
            OperationId = "GetBookById")]
        [SwaggerResponse(200, "Книга найдена", typeof(Book_Response))]
        public IResult GetBook(int id, [FromQuery] string? include = null)
        {
            // Преобразуем строку include в список
            var includeFields = include?.Split(',').Select(f => f.Trim().ToLower()).ToHashSet() ?? new HashSet<string>();

            var book = _data.Books.FirstOrDefault(b => b.Id == id);
            if (book == null) return Results.NotFound();

            var dto = new Book_Response
            {
                Id = book.Id,
                Title = includeFields.Count == 0 || includeFields.Contains("title") ? book.Title : null,
                ISBN = includeFields.Count == 0 || includeFields.Contains("isbn") ? book.ISBN : null,
                Genre = includeFields.Count == 0 || includeFields.Contains("genre") ? book.Genre : null,
                Description = includeFields.Count == 0 || includeFields.Contains("description") ? book.Description : null,
                PublicationYear = includeFields.Count == 0 || includeFields.Contains("publicationyear") ? book.PublicationYear : 0,
                Publisher = includeFields.Count == 0 || includeFields.Contains("publisher") ? book.Publisher : null,
                Authors = includeFields.Count == 0 || includeFields.Contains("authors") ? book.AuthorBooks.Select(ab => $"{ab.Author.Surname} {ab.Author.Name}").ToList() : null
            };

            return Results.Json(dto);
        }

        [HttpPost]
        [SwaggerOperation(Summary = "Создать книгу", OperationId = "CreateBook")]
        [SwaggerResponse(200, "Книга успешно создана", typeof(Book_Response))]
        public IResult CreateBook(Book_Request dto, [FromHeader(Name = "Idempotency-Key")] string idempotencyKey)
        {
            if (string.IsNullOrEmpty(idempotencyKey))
                return Results.BadRequest("Missing Idempotency-Key header.");

            if (_data.IdempotencyCache.ContainsKey(idempotencyKey))
                return Results.Json(_data.IdempotencyCache[idempotencyKey]);

            var book = new Book
            {
                Id = _data.Books.Max(b => b.Id) + 1,
                Title = dto.Title,
                ISBN = dto.ISBN,
                Genre = dto.Genre,
                Description = dto.Description,
                PublicationYear = dto.PublicationYear,
                Publisher = dto.Publisher
            };
            _data.Books.Add(book);
            _data.IdempotencyCache[idempotencyKey] = book;

            var response = new Book_Response
            {
                Id = book.Id,
                Title = book.Title,
                ISBN = book.ISBN,
                Genre = book.Genre,
                Description = book.Description,
                PublicationYear = book.PublicationYear,
                Publisher = book.Publisher,
                Authors = book.AuthorBooks.Select(ab => $"{ab.Author.Surname} {ab.Author.Name}").ToList()
            };

            return Results.Json(response);
        }

        [HttpPut("{id}")]
        [SwaggerOperation(Summary = "Обновить книгу по id", OperationId = "UpdateBookById")]
        [SwaggerResponse(200, "Книга успешно обновлена", typeof(Book_Response))]
        public IResult UpdateBook(int id, Book_Request dto)
        {
            var book = _data.Books.FirstOrDefault(b => b.Id == id);
            if (book == null) return Results.NotFound();

            book.Title = dto.Title;
            book.ISBN = dto.ISBN;
            book.Genre = dto.Genre;
            book.Description = dto.Description;
            book.PublicationYear = dto.PublicationYear;
            book.Publisher = dto.Publisher;

            var response = new Book_Response
            {
                Id = book.Id,
                Title = book.Title,
                ISBN = book.ISBN,
                Genre = book.Genre,
                Description = book.Description,
                PublicationYear = book.PublicationYear,
                Publisher = book.Publisher,
                Authors = book.AuthorBooks.Select(ab => $"{ab.Author.Surname} {ab.Author.Name}").ToList()
            };

            return Results.Json(response);
        }

        [HttpDelete("{id}")]
        [SwaggerOperation(Summary = "Удалить книгу по id", OperationId = "DeleteBookById")]
        [SwaggerResponse(200, "Книга успешно удалена")]
        public IResult DeleteBook(int id)
        {
            var book = _data.Books.FirstOrDefault(b => b.Id == id);
            if (book == null) return Results.NotFound();

            _data.Books.Remove(book);
            return Results.Ok($"Book with ID {id} deleted.");
        }
    }
}