| | | 1 | | using Microsoft.EntityFrameworkCore; |
| | | 2 | | using Microsoft.Extensions.Caching.Memory; |
| | | 3 | | using OzonDomains.Models; |
| | | 4 | | using OzonRepositories.Context; |
| | | 5 | | |
| | | 6 | | namespace OzonOrdersWeb.WebServices.Sidebar; |
| | | 7 | | |
| | | 8 | | public interface IUserSidebarSettingsService |
| | | 9 | | { |
| | | 10 | | /// <summary>Все настройки пользователя: key → JSON. Кешируется в памяти: сайдбар рендерится на каждой странице.</su |
| | | 11 | | Task<IReadOnlyDictionary<string, string>> GetAllAsync(string userId, CancellationToken cancellationToken); |
| | | 12 | | |
| | | 13 | | /// <summary> |
| | | 14 | | /// Сохранить значение; <paramref name="version"/> — версия клиента (монотонно растущая на ключ). |
| | | 15 | | /// Пустое значение удаляет настройку. Возвращает false, если в базе уже более новая версия. |
| | | 16 | | /// </summary> |
| | | 17 | | Task<bool> SaveAsync(string userId, string key, string? json, long version, CancellationToken cancellationToken); |
| | | 18 | | } |
| | | 19 | | |
| | | 20 | | /// <summary> |
| | | 21 | | /// Настройки бокового меню по пользователю в <c>UserSidebarSettings</c>. Логика хранения повторяет |
| | | 22 | | /// <c>OrdersGridUserSettingsService</c> (JSON по ключу, версия клиента, надгробия вместо удаления); |
| | | 23 | | /// сверху — memory-кеш на пользователя, потому что меню читается при каждом рендере страницы. |
| | | 24 | | /// </summary> |
| | | 25 | | public sealed class UserSidebarSettingsService : IUserSidebarSettingsService |
| | | 26 | | { |
| | 0 | 27 | | public static readonly IReadOnlySet<string> AllowedKeys = new HashSet<string>(StringComparer.Ordinal) |
| | 0 | 28 | | { |
| | 0 | 29 | | "favorites", "order", "collapsed", "prefs", |
| | 0 | 30 | | SidebarNavigationCatalog.AdminKeyPrefix + "favorites", SidebarNavigationCatalog.AdminKeyPrefix + "order", |
| | 0 | 31 | | SidebarNavigationCatalog.AdminKeyPrefix + "collapsed", SidebarNavigationCatalog.AdminKeyPrefix + "prefs" |
| | 0 | 32 | | }; |
| | | 33 | | |
| | | 34 | | private const int MaxValueLength = 64 * 1024; |
| | 0 | 35 | | private static readonly TimeSpan CacheTtl = TimeSpan.FromMinutes(10); |
| | | 36 | | |
| | | 37 | | private readonly ApplicationDbContext _context; |
| | | 38 | | private readonly IMemoryCache _cache; |
| | | 39 | | |
| | 0 | 40 | | public UserSidebarSettingsService(ApplicationDbContext context, IMemoryCache cache) |
| | | 41 | | { |
| | 0 | 42 | | _context = context; |
| | 0 | 43 | | _cache = cache; |
| | 0 | 44 | | } |
| | | 45 | | |
| | 0 | 46 | | private static string CacheKey(string userId) => "sidebar-settings:" + userId; |
| | | 47 | | |
| | | 48 | | public async Task<IReadOnlyDictionary<string, string>> GetAllAsync(string userId, CancellationToken cancellationToke |
| | | 49 | | { |
| | 0 | 50 | | if (_cache.TryGetValue(CacheKey(userId), out IReadOnlyDictionary<string, string>? cached) && cached is not null) |
| | | 51 | | { |
| | 0 | 52 | | return cached; |
| | | 53 | | } |
| | | 54 | | |
| | | 55 | | // Пустое Value — «надгробие» удалённой настройки (строка хранит Version, чтобы отклонять опоздавшие записи). |
| | 0 | 56 | | var loaded = await _context.UserSidebarSettings |
| | 0 | 57 | | .AsNoTracking() |
| | 0 | 58 | | .Where(s => s.UserId == userId && s.Value != string.Empty) |
| | 0 | 59 | | .ToDictionaryAsync(s => s.Key, s => s.Value, cancellationToken); |
| | | 60 | | |
| | 0 | 61 | | _cache.Set(CacheKey(userId), (IReadOnlyDictionary<string, string>)loaded, CacheTtl); |
| | 0 | 62 | | return loaded; |
| | 0 | 63 | | } |
| | | 64 | | |
| | | 65 | | public async Task<bool> SaveAsync(string userId, string key, string? json, long version, CancellationToken cancellat |
| | | 66 | | { |
| | 0 | 67 | | if (!AllowedKeys.Contains(key)) |
| | | 68 | | { |
| | 0 | 69 | | throw new ArgumentException($"Неизвестный ключ настройки: {key}", nameof(key)); |
| | | 70 | | } |
| | | 71 | | |
| | 0 | 72 | | if (json is { Length: > MaxValueLength }) |
| | | 73 | | { |
| | 0 | 74 | | throw new ArgumentException("Слишком большое значение настройки.", nameof(json)); |
| | | 75 | | } |
| | | 76 | | |
| | 0 | 77 | | var existing = await _context.UserSidebarSettings |
| | 0 | 78 | | .FirstOrDefaultAsync(s => s.UserId == userId && s.Key == key, cancellationToken); |
| | | 79 | | |
| | | 80 | | // Optimistic concurrency по версии клиента: запрос со старой версией пришёл позже нового — не затираем. |
| | 0 | 81 | | if (existing != null && version > 0 && version < existing.Version) |
| | | 82 | | { |
| | 0 | 83 | | return false; |
| | | 84 | | } |
| | | 85 | | |
| | 0 | 86 | | var now = DateTime.UtcNow; |
| | 0 | 87 | | if (string.IsNullOrWhiteSpace(json)) |
| | | 88 | | { |
| | 0 | 89 | | if (existing != null) |
| | | 90 | | { |
| | 0 | 91 | | existing.Value = string.Empty; |
| | 0 | 92 | | existing.UpdatedAt = now; |
| | 0 | 93 | | existing.Version = Math.Max(version, existing.Version); |
| | | 94 | | } |
| | 0 | 95 | | else if (version > 0) |
| | | 96 | | { |
| | 0 | 97 | | _context.UserSidebarSettings.Add(new UserSidebarSetting { UserId = userId, Key = key, Value = string.Emp |
| | | 98 | | } |
| | | 99 | | } |
| | 0 | 100 | | else if (existing == null) |
| | | 101 | | { |
| | 0 | 102 | | _context.UserSidebarSettings.Add(new UserSidebarSetting { UserId = userId, Key = key, Value = json, UpdatedA |
| | | 103 | | } |
| | | 104 | | else |
| | | 105 | | { |
| | 0 | 106 | | existing.Value = json; |
| | 0 | 107 | | existing.UpdatedAt = now; |
| | 0 | 108 | | existing.Version = Math.Max(version, existing.Version); |
| | | 109 | | } |
| | | 110 | | |
| | 0 | 111 | | await _context.SaveChangesAsync(cancellationToken); |
| | 0 | 112 | | _cache.Remove(CacheKey(userId)); |
| | 0 | 113 | | return true; |
| | 0 | 114 | | } |
| | | 115 | | } |