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Add user preferences management via distributed cache

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Introduced `UserPreferencesDto` to represent UI preferences,
including theme, dark mode, and grid layouts. Added the
`IUserPreferencesService` interface and implemented it in
`UserPreferencesService` to manage preferences stored in
the distributed cache (`dbo.TBDD_CACHE`).

Registered `UserPreferencesService` in dependency injection
and added a NuGet reference for `Microsoft.Extensions.Caching.Abstractions`.

Created `UserPreferencesController` with `GET` and `PUT`
endpoints to retrieve and save user preferences. Validated
theme names in the `PUT` endpoint.

Updated `Program.cs` to ensure proper service registration.
This commit is contained in:
tekh
2026-09-02 12:35:19 +02:00
parent 60ebebc0d8
commit 2e634361c5
7 changed files with 153 additions and 0 deletions
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4
EnvelopeGenerator.Infrastructure/DependencyInjection.cs
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@@ -14,6 +14,7 @@ using EnvelopeGenerator.Infrastructure.Repositories;
using EnvelopeGenerator.Infrastructure.Executor;
using EnvelopeGenerator.Application.Common.Interfaces.Repositories;
using EnvelopeGenerator.Application.Common.Interfaces.SQLExecutor;
using EnvelopeGenerator.Application.Common.Interfaces.Services;
using DigitalData.EmailProfilerDispatcher.Abstraction.Entities;
#elif NETFRAMEWORK
using System;
@@ -55,6 +56,9 @@ namespace EnvelopeGenerator.Infrastructure
services.TryAddScoped<IEnvelopeTypeRepository, EnvelopeTypeRepository>();
services.TryAddScoped<IReceiverRepository, ReceiverRepository>();
services.TryAddScoped<IEnvelopeReceiverReadOnlyRepository, EnvelopeReceiverReadOnlyRepository>();
// User Preferences — distributed cache (dbo.TBDD_CACHE)
services.TryAddScoped<IUserPreferencesService, UserPreferencesService>();
#endif
services.AddDbRepository(opt =>

1
EnvelopeGenerator.Infrastructure/EnvelopeGenerator.Infrastructure.csproj
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@@ -26,6 +26,7 @@
<PackageReference Include="DigitalData.Core.Infrastructure" Version="2.6.1" />
<PackageReference Include="HtmlSanitizer" Version="9.0.892" />
<PackageReference Include="Microsoft.Data.SqlClient" Version="5.2.2" />
<PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="9.0.6" />
<PackageReference Include="Microsoft.Identity.Client" Version="4.82.1" />
<PackageReference Include="QuestPDF" Version="2025.7.1" />
<PackageReference Include="SixLabors.ImageSharp" Version="3.1.12" />

41
EnvelopeGenerator.Infrastructure/UserPreferencesService.cs Normal file
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@@ -0,0 +1,41 @@
#if NET
using System.Text.Json;
using Microsoft.Extensions.Caching.Distributed;
using EnvelopeGenerator.Application.Common.Dto;
using EnvelopeGenerator.Application.Common.Interfaces.Services;
namespace EnvelopeGenerator.Infrastructure;
/// <summary>
/// Implements user preferences storage using the distributed cache (dbo.TBDD_CACHE).
/// No DB schema changes required — uses the existing SQL Server distributed cache table.
/// Cache key schema: "signflow.user-preferences:{username}"
/// Expiration: indefinite (no TTL) — preferences persist until explicitly overwritten.
/// </summary>
public sealed class UserPreferencesService(IDistributedCache cache) : IUserPreferencesService
{
private const string KeyPrefix = "signflow.user-preferences:";
private static string BuildKey(string username) => $"{KeyPrefix}{username}";
/// <inheritdoc />
public async Task<UserPreferencesDto> GetAsync(string username, CancellationToken ct = default)
{
var json = await cache.GetStringAsync(BuildKey(username), ct);
if (json is null)
return new UserPreferencesDto();
return JsonSerializer.Deserialize<UserPreferencesDto>(json) ?? new UserPreferencesDto();
}
/// <inheritdoc />
public async Task SaveAsync(string username, UserPreferencesDto preferences, CancellationToken ct = default)
{
var json = JsonSerializer.Serialize(preferences);
// No expiration — preferences are stored indefinitely.
await cache.SetStringAsync(BuildKey(username), json, new DistributedCacheEntryOptions(), ct);
}
}
#endif