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CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

The development guidelines to consider are descibed in docs/development_guidelines.md

Project Overview

Blazor Server app (.NET 9.0) with Clean Architecture: Domain, Application, Infrastructure, Web layers. Uses ASP.NET Core Identity with dual DbContext pattern (AppDbContext for domain, AppIdentityDbContext for auth), MudBlazor UI, and Fluxor state management.

The name for the App is KOOGLE. Koogle is an app for club management.

Functional

  • Club management
  • Management of match days and games
  • Registration of participants (members and guests)
  • Automatic or rule-based cost allocation
  • Evaluation per person/day/game
  • User-related actions (CurrentUserService)

Technical

  • ASP.NET Core backend
  • EF Core
  • Multi-client capable (club as scope)
  • Future web or mobile app realistic

Target group

  • primarily Bowling clubs (Kegelclub / Kegelvereine) - In German "Kegeln" is a bit different to bowling
  • maybe in future also for darts, soccer betting pools, Leisure groups, Sport clubs, etc.

Phase 1 MVP: See docs/IMPLEMENTATION_PLAN.md

  • 23 granular phases (A1-F3)
  • Foundation → Clubs → Users → Persons → Days → Dashboard
  • Track progress via checkboxes in plan
  • ~75 files total

Architecture

Clean Architecture Layers:

  • Koogle.Domain: Entities, Enums, Interfaces (no dependencies)

  • Koogle.Application: DTOs, Services, Mapping (depends on Domain, Infrastructure)

  • Koogle.Infrastructure: DbContexts, Repositories, Identity, Security (depends on Domain)

  • Koogle.Web: Blazor components, Controllers, Fluxor Store (depends on Application)

  • KoogleApp: Is a former approach, and not part of the project. We just use it to copy stuff into the actual project.

Dual DbContext Pattern:

  • AppDbContext: Domain entities → app schema → __EFMigrationsHistory_App
  • AppIdentityDbContext: ASP.NET Identity → auth schema → __EFMigrationsHistory_Auth

Key Technologies:

  • Fluxor (Redux pattern): Store in src/Koogle.Web/Store/, Actions/Reducers/Effects pattern
  • ASP.NET Identity: Custom ApplicationUser, ApplicationRole, CustomClaimsPrincipalFactory
  • Authorization: Club-based roles (Viewer/Editor/Admin) via ClubRoleRequirement/ClubRoleHandler
  • AutoMapper (Application layer), MudBlazor UI components

Common Commands

Build & Run

dotnet build
dotnet run --project src/Koogle.Web

Database Migrations

AppDbContext (domain data):

# Create migration
dotnet ef migrations add [Name] --project src/Koogle.Infrastructure --startup-project src/Koogle.Web --context AppDbContext --output-dir Data/Migrations

# Apply migration
dotnet ef database update -p src/Koogle.Infrastructure -s src/Koogle.Web --context AppDbContext

AppIdentityDbContext (auth data):

# Create migration
dotnet ef migrations add [Name] --project src/Koogle.Infrastructure --startup-project src/Koogle.Web --context AppIdentityDbContext --output-dir Identity/Migrations

# Apply migration
dotnet ef database update -p src/Koogle.Infrastructure -s src/Koogle.Web --context AppIdentityDbContext

Update EF Tools:

dotnet tool update --global dotnet-ef --version 9.0.11

Testing

dotnet test test/Koogle.Tests

Test framework: xUnit with FluentAssertions, Moq

Development Notes

DependencyInjection:

  • Each layer has DependencyInjection.cs registering services via extension methods
  • Call order in Program.cs: AddInfrastructure → AddApplication → AddFluxor

Authentication Flow:

  • Cookie-based auth (/login path)
  • CurrentUserService (ICurrentUserService) provides user context
  • BootstrapSeeder seeds super-admin, IdentityRoleSeeder seeds roles
  • Blazor: AuthStateInitializer.razor syncs auth state, Fluxor AuthState for client state

Authorization:

  • Custom club-based policies: ClubViewer, ClubEditor, ClubAdmin
  • ICurrentClubContext provides club context for authorization decisions
  • ClubRoleHandler evaluates requirements based on user's club membership

Blazor Components:

  • Interactive server mode
  • Layout: MainLayout.razor, NavMenu.razor
  • Auth components: AuthTest.razor, LogoutButton.razor, Account/Login.razor

Connection String:

  • Key: AppDb in appsettings.json
  • Both contexts share same connection, different schemas/migration tables