README.md

CarRental - Car Rental Project

📌Getting Started

An exemplary project for Car Rental workplaces, which is prepared with N-Layered architecture. The project developed using SOLID design principles in the CSharp programming language. CRUD operations are performed using Entity Framework Core.

📚Layers

Entities Layer

The entities layer is a layer where we store our database data. We have three folders Abstract, Concrete and DTOs in the Entities layer. The abstract folder is used to store abstract objects (e.g Interfaces) while the concrete folder is used to store concrete objects (e.g Classes).The DTOs folder is used to store Data Transmission Objects (CarDetailDto)

📂Abstract
   📃 IEntity.cs

📂Concrete
   📃 Brand.cs
   📃 Car.cs
   📃 Color.cs
   📃 Customer.cs
   📃 Rental.cs
   📃 User.cs

📂DTOs
   📃 CarDetailDto.cs
   📃 RentalDetailDto.cs

Business Layer

This layer coordinates the application, processes commands, makes logical decisions and evaluations, and performs calculations. It also moves and processes data between the two surrounding layers -DataAccess and Presentation. We have 5 folders Abstract, Concrete, Constants, Dependency Resolvers and ValidationRules in the Business Layer.

📂Abstract
   📃 IBrandService.cs
   📃 ICarService.cs
   📃 IColorService.cs
   📃 ICustomerService.cs
   📃 IUserService.cs

📂Concrete
   📃 BrandManager.cs
   📃 CarManager.cs
   📃 ColorManager.cs
   📃 CustomerManager.cs
   📃 UserManager.cs

📂Constants
   📃 Messages.cs

📂DependencyResolvers
    📂Autofac
        📃 AutofacBusinessModule.cs

📂ValidationRules
    📂FluentValidation
       📃 BrandValidator.cs
       📃 CarValidator.cs
       📃 ColorValidator.cs
       📃 CustomerValidator.cs
       📃 RentalValidator.cs

Core Layer

📂Aspects
   📂Autofac
      📂Validation
          📃 ValidationAspect.cs

📂Business
    📃 IService.cs

📂CrossCuttingConcerns
   📂Validation
      📃 ValidationTool.cs

📂DataAccess
   📂EntityFramework
      📃 EfEntityRepositoryBase.cs
    📃 IEntityRepository.cs

📂Entities
    📃 IDto.cs
    📃 IEntity.cs

📂Utilities
   📂Interceptors
      📃 AspectInterceptorSelector.cs
      📃 MethodInterception.cs
      📃 MethodInterceptionBaseAttribute.cs
   📂Results
      📃 DataResult.cs
      📃 ErrorResult.cs
      📃 ErrorDataResult.cs
      📃 IDataResult.cs
      📃 IResult.cs
      📃 Result.cs
      📃 SuccessDataResult.cs
      📃 SuccessResult.cs

Tables in Database

Cars	Rentals	Users
Variable Name Data Type Id int BrandId int ColorId int ModelYear int DailyPrice decimal Description nvarchar(50)	Variable Name Data Type Id int CarId int CustomerId int RentDate datetime ReturnDate datetime	Variable Name Data Type Id int FirstName nvarchar(50) LastName nvarchar(50) Email nvarchar(50) Password nvarchar(50)

Customers	Brands	Colors
Variable Name Data Type UserId int CustomerName nvarchar(50)	Variable Name Data Type Id int BrandName nvarchar(50)	Variable Name Data Type Id int ColorName nvarchar(50)