Adding authentication and authorization flow

MainProject/Services/AuthService.cs

@@ -0,0 +1,38 @@
+
+using BasicDotnetTemplate.MainProject.Models.Api.Data.Auth;
+using BasicDotnetTemplate.MainProject.Models.Api.Common.User;
+using BasicDotnetTemplate.MainProject.Utils;
+
+namespace BasicDotnetTemplate.MainProject.Services;
+
+public interface IAuthService
+{
+    Task<AuthenticatedUser?> AuthenticateAsync(AuthenticateRequestData data);
+}
+
+public class AuthService : BaseService, IAuthService
+{
+    protected CryptUtils _cryptUtils;
+
+    public AuthService(
+        IConfiguration configuration
+    ) : base(configuration)
+    {
+        _cryptUtils = new CryptUtils(_appSettings);
+    }
+
+    public async Task<AuthenticatedUser?> AuthenticateAsync(AuthenticateRequestData data)
+    {
+        AuthenticatedUser? authenticatedUser = null;
+        var decryptedUsername = _cryptUtils.Decrypt(data.Username ?? String.Empty);
+        var decryptedPassword = _cryptUtils.Decrypt(data.Password ?? String.Empty);
+
+        if (!String.IsNullOrEmpty(decryptedUsername) && !String.IsNullOrEmpty(decryptedPassword))
+        {
+
+        }
+
+        return authenticatedUser;
+    }
+}
+