Create README.md

README.md

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+# Library Book Management App
+
+## Table of Contents
+
+- [Overview](#overview)
+- [Features](#features)
+- [Prerequisites](#prerequisites)
+- [Running the Application](#running-the-application)
+- [Usage](#usage)
+
+## Overview
+
+This project is a console-based Library Book Management Application written in C#. It is designed to help manage books in a library, including adding new books, updating book information, deleting books, and searching for books. This application provides a simple interface to perform these tasks efficiently.
+
+## Features
+
+- **Add New Books**: Add details of new books to the library.
+- **Update Book Information**: Modify the details of existing books.
+- **Delete Books**: Remove books from the library.
+- **Search Books**: Search for books by title, author, or ISBN.
+- **List All Books**: Display a list of all books in the library.
+
+## Prerequisites
+
+- .NET Core SDK 8.0
+- Visual Studio Code 
+
+- ## Contact
+
+For any questions, suggestions, or feedback, please feel free to contact me:
+
+- **Name**: Matthew Diamonda
+- **Email**: [[email protected]](mailto:[email protected])
+- **GitHub**: [Mechiuw](https://github.com/Mechiuw)
+
+## Usage
+
+Service Layer (novel & magazine) :
+### Add Book :
+```csharp
+ public NovelResponse Create(NovelRequest novelRequest)
+    {
+        Novel novel = new(
+            novelRequest.Id,
+            novelRequest.Title,
+            novelRequest.Author,
+            novelRequest.Year,
+            novelRequest.Writer);
+        _novelRepo.Add(novel);
+
+        return new NovelResponse(
+            novel.Id,
+            novel.Title,
+            novel.Author,
+            novel.Year,
+            novel.Writer);
+    }
+
+public MagazineResponse MagCreate(MagazineRequest magazineRequest){
+        Magazine magazine = new(
+            magazineRequest.Id,
+            magazineRequest.Title,
+            magazineRequest.Author,
+            magazineRequest.Year
+        );
+
+        _magazineRepo.Add(magazine);
+        return new MagazineResponse(
+            magazine.Id,
+            magazine.Title,
+            magazine.Author,
+            magazine.Year
+        );
+    }
+```
+
+### Get All Book (Novel & Magazine) :
+```csharp
+public List<Novel> GetAll()
+    {
+        return new List<Novel>(_novelRepo);
+    }
+
+public List<Magazine> MagGetAll(){
+        return new List<Magazine>(_magazineRepo);
+    }
+```
+
+### Get By Id Book (Novel & Magazine) :
+```csharp
+public NovelResponse GetById(String Id)
+    {
+        Novel foundNovel = _novelRepo.FirstOrDefault(x => x.Id == Id);
+        if(foundNovel != null){
+            return new NovelResponse(
+                foundNovel.Id,
+                foundNovel.Title,
+                foundNovel.Author,
+                foundNovel.Year,
+                foundNovel.Writer
+            );
+        } else {
+            throw new Exception(String.Format("couldn't find any novel with id : {0}",Id));
+        }
+    }
+
+public MagazineResponse MagGetById(string Id){
+        Magazine foundMagazine = _magazineRepo.FirstOrDefault(x => x.Id == Id);
+        if(foundMagazine != null){
+            return new MagazineResponse(
+                foundMagazine.Id,
+                foundMagazine.Title,
+                foundMagazine.Author,
+                foundMagazine.Year
+            );
+        } else {
+            throw new Exception(String.Format("couldn't find any magazine with id : {0}",Id));
+        }
+    }
+```
+
+