Add TokenLifetime property to ITokenProvider interface

Expose token validity duration via TokenLifetime property in ITokenProvider. Implement this property in JwtTokenProvider to return the configured JWT lifetime from settings.

Author: Vadim Belov

Sources/EasyExtensions.AspNetCore.Authorization/Abstractions/ITokenProvider.cs

@@ -12,6 +12,11 @@ namespace EasyExtensions.AspNetCore.Authorization.Abstractions
     /// </summary>
     public interface ITokenProvider
     {
+        /// <summary>
+        /// Gets the duration for which a generated token remains valid before expiration.
+        /// </summary>
+        TimeSpan TokenLifetime { get; }
+
         /// <summary>
         /// Creates a token with claims.
         /// </summary>

Sources/EasyExtensions.AspNetCore.Authorization/Services/JwtTokenProvider.cs

@@ -18,6 +18,8 @@ internal class JwtTokenProvider(IConfiguration _configuration) : ITokenProvider
         private readonly JwtSettings _jwtSettings = _configuration.GetJwtSettings();
         private readonly SymmetricSecurityKey _securityKey = new(Encoding.UTF8.GetBytes(_configuration.GetJwtSettings().Key));
 
+        public TimeSpan TokenLifetime => TimeSpan.FromMinutes(_jwtSettings.LifetimeMinutes);
+
         public bool ValidateToken(string token)
         {
             var tokenHandler = new JwtSecurityTokenHandler();