Updated

EonaCat.Logger.LogServer/Services/IAnalyticsService.cs

@@ -0,0 +1,37 @@
+using LogCentral.Server.Data;
+using LogCentral.Server.Services;
+using Microsoft.EntityFrameworkCore;
+
+public interface IAnalyticsService
+{
+    Task<Dictionary<string, object>> GetAnalyticsAsync(DateTime startDate, DateTime endDate);
+}
+
+public class AnalyticsService : IAnalyticsService
+{
+    private readonly LogCentralDbContext _context;
+
+    public AnalyticsService(LogCentralDbContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<Dictionary<string, object>> GetAnalyticsAsync(DateTime startDate, DateTime endDate)
+    {
+        var logs = await _context.LogEntries
+            .Where(l => l.Timestamp >= startDate && l.Timestamp <= endDate)
+            .ToListAsync();
+
+        return new Dictionary<string, object>
+        {
+            ["totalEvents"] = logs.Count(l => l.Level == 7),
+            ["topEvents"] = logs
+                .Where(l => l.Level == 7)
+                .GroupBy(l => l.Message)
+                .Select(g => new { Event = g.Key, Count = g.Count() })
+                .OrderByDescending(x => x.Count)
+                .Take(10)
+                .ToList()
+        };
+    }
+}