NLW Journey API

OVERVIEW

An API for planning trips: register a trip and the activities that belong to it. Built during Rocketseat's NLW, it was a testing ground for Clean Code, SOLID and Domain-Driven Design in a project small enough to see every decision.

CONCEPT

Domain-Driven Design. The domain — trips and activities — sits at the center, isolated from the database and from HTTP. Validation rules are declarative with FluentValidation instead of a cascade of ifs, and errors become custom exceptions handled by a single filter, so every error response has the same shape.

FEATURES

• Registering trips and each trip's activities
• Declarative validation with FluentValidation
• Custom exceptions with a global error filter
• Interactive documentation with Swagger

HOW IT WORKS

Persistence uses Entity Framework with SQLite. Each request goes through the use case's validation before touching the database; if something fails, the exception bubbles up to the filter, which returns a standardized response.

STACK

• CSharp
• DotNet