Jahresplanimport und Ablgeich von Untis

2026-08-23 19:23:05 +02:00
parent 4a59bff9de
commit dd5ecb0334
20 changed files with 1039 additions and 20 deletions
@@ -0,0 +1,87 @@
+using System.Text.Json;
+using LehrerApp.Sync.Crypto;
+
+namespace LehrerApp.Desktop.Services;
+
+internal sealed class AnnualPlanSettingsConfig
+{
+    public bool Enabled { get; set; }
+    public string? EncryptedIcalUrl { get; set; }
+    public DateTime? LastSyncAt { get; set; }
+    public string LastSyncStatus { get; set; } = "";
+}
+
+/// <summary>
+/// Gerätebezogene Einstellungen für den externen Schuljahresplan. Der eingebettete Feed-Schlüssel
+/// wird wie die WebUntis-URL verschlüsselt in einer separaten Datei gespeichert.
+/// </summary>
+public sealed class AnnualPlanSettingsService
+{
+    private readonly string _configPath;
+    private readonly byte[] _urlKey;
+    private AnnualPlanSettingsConfig _config;
+
+    public bool Enabled => _config.Enabled;
+    public bool IsConfigured => _config.EncryptedIcalUrl is not null;
+    public DateTime? LastSyncAt => _config.LastSyncAt;
+    public string LastSyncStatus => _config.LastSyncStatus;
+
+    public AnnualPlanSettingsService(string appDataPath)
+    {
+        _configPath = Path.Combine(appDataPath, "annual-plan-settings.json");
+        var keyPath = Path.Combine(appDataPath, "annual-plan-url.key");
+        _urlKey = SyncCrypto.LoadKey(keyPath) ?? GenerateAndSaveKey(keyPath);
+        _config = Load();
+    }
+
+    public void SetIcalUrl(string url)
+    {
+        _config.EncryptedIcalUrl = SyncCrypto.EncryptObject(url, _urlKey);
+        Save();
+    }
+
+    public string? GetIcalUrl() => _config.EncryptedIcalUrl is null
+        ? null
+        : SyncCrypto.DecryptObject<string>(_config.EncryptedIcalUrl, _urlKey);
+
+    public void SetEnabled(bool enabled)
+    {
+        _config.Enabled = enabled;
+        Save();
+    }
+
+    public void ClearIcalUrl()
+    {
+        _config.EncryptedIcalUrl = null;
+        _config.Enabled = false;
+        Save();
+    }
+
+    public void SetLastSync(DateTime at, string status)
+    {
+        _config.LastSyncAt = at;
+        _config.LastSyncStatus = status;
+        Save();
+    }
+
+    private byte[] GenerateAndSaveKey(string keyPath)
+    {
+        var key = SyncCrypto.GenerateKey();
+        SyncCrypto.SaveKey(key, keyPath);
+        return key;
+    }
+
+    private AnnualPlanSettingsConfig Load()
+    {
+        try
+        {
+            if (File.Exists(_configPath))
+                return JsonSerializer.Deserialize<AnnualPlanSettingsConfig>(File.ReadAllText(_configPath))
+                       ?? new AnnualPlanSettingsConfig();
+        }
+        catch { /* beschädigte lokale Konfiguration -> Standardwerte */ }
+        return new AnnualPlanSettingsConfig();
+    }
+
+    private void Save() => File.WriteAllText(_configPath, JsonSerializer.Serialize(_config));
+}