Добавлены функции резервного копирования контактов, улучшена обработка фотографий сотрудников и обновлены зависимости

Program.cs

@@ -2,6 +2,8 @@
 using Newtonsoft.Json;
 using Serilog;
 using StackExchange.Redis;
+using System.IO.Hashing;
+using System.Text;
 using System.Timers;
 using Telegram.Bot;
 using Telegram.Bot.Polling;
@@ -14,12 +16,12 @@ namespace nsszcontactbot;
 
 public class Program
 {
-    private static ITelegramBotClient Bot;
+    private static ITelegramBotClient Bot = default!;
     private static List<Employee> Employees = [];
     private static List<string> Departments = [];
-    private static IConfigurationRoot config;
-    private static FavoriteContactsManager FavoritesManager;
-    private static PhotosManager PhotosManager;
+    private static IConfigurationRoot config = default!;
+    private static FavoriteContactsManager FavoritesManager = default!;
+    private static PhotosManager PhotosManager = default!;
     //private static ILogger<Program> Logger;
 
     public static async Task<int> Main(string[] args)
@@ -57,7 +59,7 @@ public class Program
 
         var me = await Bot.GetMe();
 
-        Log.Information($"Бот запущен: @{me.Username}");
+        Log.Information("Бот запущен: @{Username}", me.Username);
 
         // Запуск обработки обновлений
         var cancellationToken = new CancellationTokenSource().Token;
@@ -89,7 +91,7 @@ public class Program
         if (update.Type == UpdateType.Message && update.Message?.Text != null)
         {
             var message = update.Message;
-            Log.Debug($"INPUT: from={message.From?.Username} text={message.Text}");
+            Log.Debug("Входящий текст (From=\"{Username}\", MessageId=\"{MessageId}\"): {Text}", message.From?.ToString() ?? "<!--message.From is null-->", message.Id, message.Text);
 
             if (message.Text.StartsWith("/start"))
             {
@@ -97,7 +99,7 @@ public class Program
             }
             else if (message.Text.EndsWith("Подразделения"))
             {
-                await ChooseDepartment(message);
+                await HandleShowDepartments(message);
             }
             else if (message.Text.EndsWith("Избранные"))
             {
@@ -111,6 +113,8 @@ public class Program
         else if (update.Type == UpdateType.CallbackQuery)
         {
             string data = update.CallbackQuery!.Data ?? string.Empty;
+            var callbackQuery = update.CallbackQuery!;
+            Log.Debug("Нажатие кнопки (From=\"{Username}\", CallbackQueryId=\"{CallbackQueryId}\"): {Data}", callbackQuery.From?.ToString() ?? "<!--cbquery.From is null-->", callbackQuery.Id, data);
             string[] dataParts = data.Split('/');
             if (dataParts.Length > 0)
             {
@@ -185,7 +189,7 @@ public class Program
         await Bot.SendMessage(message.Chat.Id, text, replyMarkup: new string[] { "❤️ Избранные", "🏢 Подразделения" });
     }
 
-    private static async Task ChooseDepartment(Message message)
+    private static async Task HandleShowDepartments(Message message)
     {
         Departments = [.. Employees.OrderBy(e => e.DepartmentCode).Select(e => e.Department).Distinct()];
         await ShowDepartments(message.Chat.Id);
@@ -382,10 +386,10 @@ public class Program
             if (employee != null)
             {
                 await FavoritesManager.RemoveFavoriteAsync(callbackQuery.From.Id, contactId);
-                foreach (var row in callbackQuery.Message.ReplyMarkup.InlineKeyboard)
+                foreach (var row in callbackQuery.Message.ReplyMarkup!.InlineKeyboard)
                     foreach (var cell in row)
                     {
-                        if (cell.CallbackData.Contains("delfavorite"))
+                        if (cell.CallbackData!.Contains("delfavorite"))
                         {
                             cell.CallbackData = $"addfavorite/{contactId}";
                             cell.Text = "❤️ В избранные";
@@ -533,7 +537,7 @@ public class Program
 
     private static async Task ShowEmployeeResults(Message message, List<Employee> results, bool? isFavorite = false, int page = 1, int pageSize = 10)
     {
-        if (results.Any())
+        if (results.Count != 0)
         {
             if (results.Count <= pageSize)
             {
@@ -670,7 +674,7 @@ public class Program
             card += $"📞 {contact.ExtensionNumber}\n";
 
         if (!string.IsNullOrEmpty(employee.IP))
-            card += $"🌐 {employee.IP}\n";
+            card += $"🖥 {employee.IP}\n";
 
         card += GetEventStatus(employee);
 
@@ -692,7 +696,7 @@ public class Program
         LoadEmployees();
     }
 
-    private static int prevHash = 0;
+    private static string prevHash = string.Empty;
     private static bool LoadEmployees()
     {
         try
@@ -713,13 +717,19 @@ public class Program
                     json = File.ReadAllText(filePath);
                 }
                 // Загрузка данных сотрудников из JSON файла при наличии изменений
-                int newHash = json.GetHashCode();
+                var newHash = CalculateHash(json);
                 if (prevHash == newHash)
                 {
                     return true;
                 }
                 prevHash = newHash;
                 Employees = JsonConvert.DeserializeObject<List<Employee>>(json)!;
+
+                var backupFilename = BackupContactsJSON(json);
+                if (!string.IsNullOrEmpty(backupFilename))
+                {
+                    Log.Debug("Данные обновлены, создана резервная копия: {BackupFilename}", backupFilename);
+                }
             }
             else
             {
@@ -748,6 +758,31 @@ public class Program
         }
     }
 
+    private static string CalculateHash(string data)
+    {
+        byte[] hashBytes = Crc32.Hash(Encoding.UTF8.GetBytes(data));
+        return Convert.ToHexString(hashBytes);
+    }
+    private static string BackupContactsJSON(string json)
+    {
+        ArgumentException.ThrowIfNullOrEmpty(json, nameof(json));
+        var backupDirectory = config["Paths:ContactsBackupDirectory"] ?? string.Empty;
+        if (!string.IsNullOrEmpty(backupDirectory))
+        {
+            if (!Directory.Exists(backupDirectory))
+            {
+                Directory.CreateDirectory(backupDirectory);
+            }
+
+            var hashString = CalculateHash(json).ToUpperInvariant();
+
+            var filename = Path.GetFullPath(Path.Combine(backupDirectory, $"{DateTime.Now:yyyy-MM-dd_HH-mm-ss}_{Employees.Count}_contacts_{hashString}.json"));
+            File.WriteAllText(filename, json);
+            return filename;
+        }
+        return string.Empty;
+    }
+
     private static void StartBirthdayNotifications()
     {
         var timer = new Timer(TimeSpan.FromHours(24).TotalMilliseconds);