added books controller

Controllers/BooksController.cs

@@ -0,0 +1,61 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using TestApplication.Data;
+using TestApplication.DTO;
+using System.Linq;
+
+namespace TestApplication.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class BooksController : ControllerBase
+    {
+        private readonly Context _context;
+
+        public BooksController(Context context)
+        {
+            _context = context;
+        }
+
+        [HttpGet]
+        public ActionResult<IEnumerable<BookDTO>> GetBooks()
+        {
+            var book = from books in _context.Book
+            join book_descriptions in _context.Book_Description on books.id equals book_descriptions.book_id
+            select new BookDTO
+            {
+                Book_id = books.id,
+                Book_price = books.price,
+                ISBN = books.isbn,
+                Book_name = book_descriptions.book_name,
+                Book_description = book_descriptions.book_description
+            };
+
+            return Ok(book);
+        }
+
+        [HttpGet("{id}")]
+        public ActionResult<BookDTO> GetBooks_byId(int id)
+        {
+            var book = from books in _context.Book
+            join book_descriptions in _context.Book_Description on books.id equals book_descriptions.book_id
+            select new BookDTO
+            {
+                Book_id = books.id,
+                Book_price = books.price,
+                ISBN = books.isbn,
+                Book_name = book_descriptions.book_name,
+                Book_description = book_descriptions.book_description
+            };
+
+            var book_by_id = book.ToList().Find(x => x.Book_id == id);
+
+            if (book_by_id == null)
+            {
+                return NotFound();
+            }
+            return book_by_id;
+        }
+    }
+}

DTO/BookDTO.cs

@@ -0,0 +1,11 @@
+namespace TestApplication.DTO
+{
+    public class BookDTO
+    {
+        public int Book_id { get; set; }
+        public decimal Book_price { get; set; }
+        public string ISBN { get; set; }
+        public string Book_name { get; set; }
+        public string Book_description { get; set; }
+    }
+}

Data/Context.cs

@@ -7,5 +7,7 @@ namespace TestApplication.Data
     {
         public Context(DbContextOptions<Context> options) : base(options) {}
         public DbSet<Values> Values {get; set;}
+        public DbSet<Book> Book {get; set;}
+        public DbSet<Book_description> Book_Description {get; set;}
     }
 }

Models/Book.cs

@@ -0,0 +1,12 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace TestApplication.Models
+{
+    public class Book
+    {
+        [Key]
+        public int id { get; set; }
+        public decimal price { get; set; }
+        public string isbn { get; set; }
+    }
+}

Models/Book_description.cs

@@ -0,0 +1,13 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace TestApplication.Models
+{
+    public class Book_description
+    {
+        [Key]
+        public int id { get; set; }
+        public int book_id { get; set; }
+        public string book_name { get; set; }
+        public string book_description { get; set; }
+    }
+}