✨ Add account statuses

DysonNetwork.Sphere/Account/AccountEventService.cs

@@ -0,0 +1,79 @@
+using DysonNetwork.Sphere.Activity;
+using DysonNetwork.Sphere.Connection;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Caching.Memory;
+using NodaTime;
+using NodaTime;
+
+namespace DysonNetwork.Sphere.Account;
+
+public class AccountEventService(AppDatabase db, ActivityService act, WebSocketService ws, IMemoryCache cache)
+{
+    private const string StatusCacheKey = "account_status_";
+
+    public async Task<Status> GetStatus(long userId)
+    {
+        var cacheKey = $"{StatusCacheKey}{userId}";
+        if (cache.TryGetValue(cacheKey, out Status? cachedStatus))
+            return cachedStatus!;
+
+        var now = SystemClock.Instance.GetCurrentInstant();
+        var status = await db.AccountStatuses
+            .Where(e => e.AccountId == userId)
+            .Where(e => e.ClearedAt == null || e.ClearedAt > now)
+            .OrderByDescending(e => e.CreatedAt)
+            .FirstOrDefaultAsync();
+        if (status is not null)
+        {
+            cache.Set(cacheKey, status, TimeSpan.FromMinutes(5));
+            return status;
+        }
+
+        var isOnline = ws.GetAccountIsConnected(userId);
+        if (isOnline)
+        {
+            return new Status
+            {
+                Attitude = StatusAttitude.Neutral,
+                IsOnline = true,
+                Label = "Online",
+                AccountId = userId,
+            };
+        }
+
+        return new Status
+        {
+            Attitude = StatusAttitude.Neutral,
+            IsOnline = false,
+            Label = "Offline",
+            AccountId = userId,
+        };
+    }
+
+    public async Task<Status> CreateStatus(Account user, Status status)
+    {
+        var now = SystemClock.Instance.GetCurrentInstant();
+        await db.AccountStatuses
+            .Where(x => x.AccountId == user.Id && (x.ClearedAt == null || x.ClearedAt > now))
+            .ExecuteUpdateAsync(s => s.SetProperty(x => x.ClearedAt, now));
+
+        db.AccountStatuses.Add(status);
+        await db.SaveChangesAsync();
+
+        await act.CreateActivity(
+            user,
+            "accounts.status",
+            $"account.statuses/{status.Id}",
+            ActivityVisibility.Friends
+        );
+
+        return status;
+    }
+
+    public async Task ClearStatus(Account user, Status status)
+    {
+        status.ClearedAt = SystemClock.Instance.GetCurrentInstant();
+        db.Update(status);
+        await db.SaveChangesAsync();
+    }
+}