using Microsoft.AspNetCore.Components.Authorization;

namespace TechHelper.Client.HttpRepository
{
	public class RefreshTokenService
	{
		private readonly AuthenticationStateProvider _authenticationStateProvider;
		private readonly IAuthenticationClientService _authenticationClientService;

		public RefreshTokenService(AuthenticationStateProvider authenticationStateProvider, IAuthenticationClientService authenticationClientService)
		{
			_authenticationStateProvider = authenticationStateProvider;
			_authenticationClientService = authenticationClientService;
		}

		public async Task<string> TryRefreshToken()
		{
			var authState = await _authenticationStateProvider.GetAuthenticationStateAsync();
			var user = authState.User;
			var expClaim = user.FindFirst(c => c.Type.Equals("exp")).Value;
			var expTime = DateTimeOffset.FromUnixTimeSeconds(
				Convert.ToInt64(expClaim));

			var diff = expTime - DateTime.UtcNow;
			if (diff.TotalMinutes <= 2)
				return await _authenticationClientService.RefreshTokenAsync();

			return string.Empty;
		}



	}
}