Expense Tracker API

A robust and scalable Backend API built with .NET 9 following Clean Architecture principles. This project manages users, expenses, and categories with a focus on data integrity and clear separation of concerns.

🚀 Technologies Used

• Framework: .NET 9
• Database: Entity Framework Core (SQL Server)
• Mapping: AutoMapper
• Architecture: Clean Architecture (Domain, Application, Infrastructure, API)
• Design Patterns: Repository Pattern, DTOs (Data Transfer Objects)

✨ Key Features Implemented

📂 Core Functionalities

• User Management: Full CRUD operations for users, including DTO-based data transfer.
• Category Management: System for organizing expenses into custom categories.
• Expense Tracking: Complete expense management with async operations and validation.
• Global Error Handling: Centralized middleware for handling exceptions consistently.

🛠 Technical Highlights

• Clean Architecture: Separation of project into Domain, Application, Infrastructure, and API layers for better maintainability.
• Data Mapping: Integrated AutoMapper to handle transformations between Domain Entities and DTOs efficiently.
• Persistence: Configured ApplicationDbContext with support for Users, Expenses, and Categories.
• Repository Clean-up: Properly configured .gitignore to exclude bin/obj and IDE-specific settings.

🏗 Project Structure

• Domain: Entities and core business logic.
• Application: Interfaces, DTOs, Mapping profiles, and Service logic.
• Infrastructure: Database context, migrations, and external service implementations.
• API: Controllers, Middleware, and Program configuration.

🚦 Getting Started

1. Clone the repository.
2. Update the connection string in appsettings.json.
3. Run dotnet ef database update to apply migrations.
4. Run the project and explore via Swagger UI.