using PrivaPub.ClientModels;

using System.Security.Claims;

namespace PrivaPub.Extensions
{
	public static class StringExtensions
	{
		public static string GetUserId(this ClaimsPrincipal claimsPrincipal)
		{
			return claimsPrincipal?.Claims?.FirstOrDefault(c => c.Type == ClaimTypes.UserData)?.Value;
		}

		public static string GetUserName(this ClaimsPrincipal claimsPrincipal)
		{
			var userId = claimsPrincipal.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Name)?.Value;
			return string.IsNullOrEmpty(userId) ? default : userId;
		}

		public static List<string> GetUserPolicies(this ClaimsPrincipal claimsPrincipal)
		{
			var policies = new List<string>();

			if (claimsPrincipal.Claims.Any(c => c.Type == Policies.IsAdmin && bool.Parse(c.Value)))
				policies.Add(Policies.IsAdmin);

			if (claimsPrincipal.Claims.Any(c => c.Type == Policies.IsUser && bool.Parse(c.Value)))
				policies.Add(Policies.IsUser);

			if (claimsPrincipal.Claims.Any(c => c.Type == Policies.IsModerator && bool.Parse(c.Value)))
				policies.Add(Policies.IsModerator);

			return policies;
		}
	}
}