Added Authentication with user-auth and apikey-auth

watcher-monitoring/Models/ApiKey.cs

@@ -0,0 +1,35 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace watcher_monitoring.Models;
+
+public class ApiKey
+{
+    [Key]
+    public int Id { get; set; }
+
+    [Required]
+    [MaxLength(64)]
+    public string Key { get; set; } = string.Empty;
+
+    [Required]
+    [MaxLength(100)]
+    public string Name { get; set; } = string.Empty;
+
+    public string? Description { get; set; }
+
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+
+    public DateTime? ExpiresAt { get; set; }
+
+    public DateTime? LastUsedAt { get; set; }
+
+    public bool IsActive { get; set; } = true;
+
+    public bool IsExpired => ExpiresAt.HasValue && ExpiresAt.Value < DateTime.UtcNow;
+
+    // Foreign Key: Jeder API-Key gehört zu einem User
+    public int UserId { get; set; }
+
+    // Navigation Property
+    public User User { get; set; } = null!;
+}