Table of Contents

Ploch.Common.AppServices.Web

ASP.NET Core implementation of the IUserInfoProvider abstraction from Ploch.Common.AppServices.

Overview

Ploch.Common.AppServices.Web provides the ASP.NET Core-specific implementation of the IUserInfoProvider interface defined in Ploch.Common.AppServices. It resolves the current user from the active HttpContext via IHttpContextAccessor.

The package is intentionally thin — a single implementation class and a single DI registration extension method — so application code that depends only on IUserInfoProvider remains portable across host environments.

Installation

dotnet add package Ploch.Common.AppServices.Web

Key Types

Type Kind Description
HttpContextUserInfoProvider Class Implements IUserInfoProvider (from Ploch.Common.AppServices.Security). Returns httpContext.User from the current IHttpContextAccessor.
ServiceCollectionRegistrations Static class AddUserInfoProvider() extension method — registers HttpContextUserInfoProvider as a singleton IUserInfoProvider. Does not register IHttpContextAccessor itself.

Usage Examples

Registering the provider

// Program.cs
builder.Services.AddUserInfoProvider();

This maps IUserInfoProvider (from Ploch.Common.AppServices.Security) to HttpContextUserInfoProvider as a singleton. Note: this method does not register IHttpContextAccessor — it assumes it is already available. If you encounter a missing registration, add it explicitly (see Configuration section below).

Consuming via the abstraction

After registration, inject IUserInfoProvider anywhere in the application without referencing ASP.NET Core types directly:

public class AuditService(IUserInfoProvider userInfoProvider, IAuditRepository repository)
{
    public async Task LogAsync(string action, CancellationToken ct)
    {
        var user = userInfoProvider.GetCurrentUserInfo();
        var entry = new AuditEntry
        {
            Action = action,
            PerformedBy = user?.Identity?.Name ?? "system",
            Timestamp = DateTimeOffset.UtcNow
        };
        await repository.AddAsync(entry, ct);
    }
}

Configuration

No additional configuration is needed. IHttpContextAccessor is made available by the ASP.NET Core framework when calling AddHttpContextAccessor(), which most minimal API and MVC setups already include. If you encounter a missing registration, add it explicitly:

builder.Services.AddHttpContextAccessor();
builder.Services.AddUserInfoProvider();
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