feat: add serilog

Author: mateof

TelegramDownloader/Models/LogEntry.cs

@@ -0,0 +1,108 @@
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+namespace TelegramDownloader.Models
+{
+    /// <summary>
+    /// Represents a log entry stored in MongoDB
+    /// </summary>
+    [BsonIgnoreExtraElements]
+    public class LogEntry
+    {
+        [BsonId]
+        [BsonRepresentation(BsonType.ObjectId)]
+        public string? Id { get; set; }
+
+        [BsonElement("UtcTimeStamp")]
+        [BsonDateTimeOptions(Kind = DateTimeKind.Utc)]
+        public DateTime Timestamp { get; set; }
+
+        [BsonElement("Level")]
+        public string Level { get; set; } = "Information";
+
+        [BsonElement("RenderedMessage")]
+        public string Message { get; set; } = string.Empty;
+
+        [BsonElement("Exception")]
+        public BsonValue? ExceptionRaw { get; set; }
+
+        [BsonElement("Properties")]
+        public BsonDocument? Properties { get; set; }
+
+        // Helper properties for display
+        [BsonIgnore]
+        public string? Exception => ExceptionRaw?.IsBsonDocument == true
+            ? ExceptionRaw.AsBsonDocument.ToString()
+            : ExceptionRaw?.ToString();
+
+        [BsonIgnore]
+        public string Logger => GetPropertyValue("SourceContext") ?? "Unknown";
+
+        [BsonIgnore]
+        public string Version => GetPropertyValue("AppVersion") ?? "Unknown";
+
+        [BsonIgnore]
+        public string ShortLogger
+        {
+            get
+            {
+                var logger = Logger;
+                if (string.IsNullOrEmpty(logger)) return "Unknown";
+                var parts = logger.Split('.');
+                return parts.Length > 0 ? parts[^1] : logger;
+            }
+        }
+
+        private string? GetPropertyValue(string key)
+        {
+            if (Properties == null) return null;
+            if (Properties.TryGetValue(key, out var value))
+            {
+                return value?.ToString();
+            }
+            return null;
+        }
+    }
+
+    /// <summary>
+    /// Request parameters for log queries
+    /// </summary>
+    public class LogQueryRequest
+    {
+        public int Page { get; set; } = 1;
+        public int PageSize { get; set; } = 50;
+        public DateTime? FromDate { get; set; }
+        public DateTime? ToDate { get; set; }
+        public string? Level { get; set; }
+        public string? Logger { get; set; }
+        public string? Version { get; set; }
+        public string? SearchText { get; set; }
+        public bool DescendingOrder { get; set; } = true;
+    }
+
+    /// <summary>
+    /// Result of a log query with pagination info
+    /// </summary>
+    public class LogQueryResult
+    {
+        public List<LogEntry> Logs { get; set; } = new();
+        public int TotalCount { get; set; }
+        public int Page { get; set; }
+        public int PageSize { get; set; }
+        public int TotalPages => PageSize > 0 ? (int)Math.Ceiling(TotalCount / (double)PageSize) : 0;
+    }
+
+    /// <summary>
+    /// Statistics about log entries
+    /// </summary>
+    public class LogStats
+    {
+        public long TotalLogs { get; set; }
+        public long ErrorCount { get; set; }
+        public long WarningCount { get; set; }
+        public long InfoCount { get; set; }
+        public long DebugCount { get; set; }
+        public DateTime? OldestLog { get; set; }
+        public DateTime? NewestLog { get; set; }
+    }
+}