1 files changed, 40 insertions, 0 deletions
diff --git a/Logics/RefreshTokenLogic.cs b/Logics/RefreshTokenLogic.cs
new file mode 100644
index 0000000..200438a
--- /dev/null
+++ b/Logics/RefreshTokenLogic.cs
@@ -0,0 +1,40 @@
+using Microsoft.AspNetCore.Identity;
+using BackendPIA.Services;
+using BackendPIA.Models;
+using BackendPIA.Forms;
+
+namespace BackendPIA.Logics {
+    public class RefreshTokenLogic : BaseUserAccountLogic {
+        private readonly AuthenticationToken _form;
+
+        public RefreshTokenLogic(ITokenGenerator token_generator, UserManager<UserAccount> manager, AuthenticationToken form) : base(token_generator, manager) {
+            _form = form;
+        }
+
+        public async Task<bool> Call() {
+            var email = _token_generator.GetPrincipalFromToken(_form.Token);
+
+            if(email == null)
+                return false;
+            // Checks.
+            var user = await _manager.FindByEmailAsync(email);
+
+            if(user == null)
+                return false;
+
+            if(user.SessionTokenExpiryTime == null || user.SessionTokenExpiryTime < DateTime.UtcNow 
+               || user.SessionToken == null || user.SessionToken != _form.RefreshToken) {
+                user.SessionToken = null;
+                user.SessionTokenExpiryTime = null;
+                _manager.UpdateAsync(user);
+
+                return false;
+            }
+            
+            await SetAuthenticationToken(user);
+            _token.RefreshToken = user.SessionToken;
+
+            return true;
+        }
+    }
+}
+\ No newline at end of file