111 lines
3.7 KiB
C#
111 lines
3.7 KiB
C#
using ITNexusAgent.Models;
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using Newtonsoft.Json;
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using System.Diagnostics;
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using System.Management;
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using System.Text;
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namespace ITNexusAgent.Services;
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public class NotificationService
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{
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private readonly string _exePath;
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private readonly string _dataDir;
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private readonly string _shownIdsPath;
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private readonly HashSet<int> _shownIds;
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public NotificationService(string exePath, string dataDir)
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{
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_exePath = exePath;
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_dataDir = dataDir;
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_shownIdsPath = Path.Combine(dataDir, "shown_announcements.json");
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_shownIds = LoadShownIds();
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}
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private HashSet<int> LoadShownIds()
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{
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try
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{
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if (File.Exists(_shownIdsPath))
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{
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var ids = JsonConvert.DeserializeObject<List<int>>(File.ReadAllText(_shownIdsPath));
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return ids != null ? new HashSet<int>(ids) : [];
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}
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}
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catch { }
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return [];
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}
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private void SaveShownIds()
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{
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try { File.WriteAllText(_shownIdsPath, JsonConvert.SerializeObject(_shownIds.ToList())); }
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catch { }
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}
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public void ShowAnnouncements(List<Announcement> announcements)
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{
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foreach (var ann in announcements)
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{
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if (_shownIds.Contains(ann.Id)) continue;
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_shownIds.Add(ann.Id);
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SaveShownIds();
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ShowNotification(ann);
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}
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}
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// Vollständigen eingeloggten User aus WMI holen (z.B. "WINKEL\gruessing" oder "AzureAD\gruessing")
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public static string GetLoggedOnUser()
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{
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try
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{
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using var searcher = new ManagementObjectSearcher("SELECT UserName FROM Win32_ComputerSystem");
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foreach (ManagementObject obj in searcher.Get())
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{
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var user = obj["UserName"]?.ToString();
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if (!string.IsNullOrEmpty(user)) return user;
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}
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}
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catch { }
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return "";
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}
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private void ShowNotification(Announcement ann)
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{
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try
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{
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var fullUser = GetLoggedOnUser();
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if (string.IsNullOrEmpty(fullUser)) return;
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var json = Convert.ToBase64String(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(ann)));
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var taskName = $"ITNexus-Ann-{ann.Id}";
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// Alten Task entfernen
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Process.Start(new ProcessStartInfo("schtasks.exe", $"/delete /tn \"{taskName}\" /f")
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{ CreateNoWindow = true })?.WaitForExit();
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// Task mit Trigger weit in der Zukunft erstellen (damit er nicht abläuft vor /run)
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var triggerTime = DateTime.Now.AddMinutes(60).ToString("HH:mm:ss");
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var args = $"/create /tn \"{taskName}\" /tr \"\\\"{_exePath}\\\" --notify {json}\" " +
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$"/sc ONCE /st {triggerTime} /ru \"{fullUser}\" /it /f";
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var p = Process.Start(new ProcessStartInfo("schtasks.exe", args)
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{ CreateNoWindow = true, RedirectStandardError = true, UseShellExecute = false });
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p?.WaitForExit();
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// Sofort ausführen
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var run = Process.Start(new ProcessStartInfo("schtasks.exe", $"/run /tn \"{taskName}\"")
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{ CreateNoWindow = true });
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run?.WaitForExit();
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// Task löschen damit der +60min Trigger nicht nochmal feuert
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Thread.Sleep(3000);
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Process.Start(new ProcessStartInfo("schtasks.exe", $"/delete /tn \"{taskName}\" /f")
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{ CreateNoWindow = true })?.WaitForExit();
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AgentWorker.Log($"NOTIFY: Task '{taskName}' für User '{fullUser}' gestartet (ExitCode={p?.ExitCode})");
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}
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catch (Exception ex)
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{
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AgentWorker.Log($"NOTIFY ERROR: {ex.Message}");
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}
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}
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}
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