using Microsoft.AspNetCore.Components.Authorization;
using Neighbourhood.omg.lol.Models;
using System.Security.Claims;

namespace Neighbourhood.omg.lol {
	public class CustomAuthenticationStateProvider : AuthenticationStateProvider {
		public CustomAuthenticationStateProvider() {
		}

		public async Task Login(string token) {
			await SecureStorage.SetAsync("accounttoken", token);
			NotifyAuthenticationStateChanged(GetAuthenticationStateAsync());
		}

		public async Task Logout() {
			SecureStorage.Remove("accounttoken");
			NotifyAuthenticationStateChanged(GetAuthenticationStateAsync());
		}

		public override async Task<AuthenticationState> GetAuthenticationStateAsync() {
			var identity = new ClaimsIdentity();
			try {
				var token = await SecureStorage.GetAsync("accounttoken");
				if (token != null) {
          var name = await SecureStorage.GetAsync("accountname");
          var email = await SecureStorage.GetAsync("accountemail");
					var addresses = await SecureStorage.GetAsync("accountaddresses");

					RestService api = new RestService(token);
          if (string.IsNullOrEmpty(name) || string.IsNullOrEmpty(email)) {
						AccountResponseData? accountInfo = await api.AccountInfo();
						if (accountInfo != null) {
							name = accountInfo.Name;
							email = accountInfo.Email;
						}
					}
          if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(email)) {
            if (string.IsNullOrEmpty(addresses)) {
							AddressResponseList? addressList = await api.Addresses();
							List<string> addressStrings = new List<string>();
							if (addressList != null) foreach (var address in addressList) {
								if (!address.Expiration.Expired && !string.IsNullOrEmpty(address.Address)) {
									addressStrings.Add(address.Address);
								}
							}
							addresses = string.Join(',', addressStrings);
            }
						if(!string.IsNullOrEmpty(addresses)) {
							await SecureStorage.SetAsync("accountname", name);
							await SecureStorage.SetAsync("accountemail", email);
							await SecureStorage.SetAsync("accountaddresses", addresses);
            }

            var claims = new[] { 
							new Claim(ClaimTypes.Name, name),
							new Claim(ClaimTypes.Email, email),
							new Claim("addresses", addresses)
						};
						identity = new ClaimsIdentity(claims, "Server authentication");
					}
				}
			}
			catch (HttpRequestException ex) {
				Console.WriteLine("Request failed:" + ex.ToString());
			}

			return new AuthenticationState(new ClaimsPrincipal(identity));
		}
	}
}