Implemented Tokens, Login Functionality, and download authorization #15, #27, #31, #34

Controllers/Managers/TokenManager.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 
 using Microsoft.Extensions.Configuration;
+using Newtonsoft.Json;
 using RestSharp;
 
 using Icarus.Models;
@@ -13,6 +14,11 @@ namespace Icarus.Controllers.Managers
 	{
 		#region Fields
 		private IConfiguration _config;
+		private string _clientId;
+		private string _clientSecret;
+		private string _audience;
+		private string _grantType;
+		private string _url;
 		#endregion
 
 
@@ -32,22 +38,84 @@ namespace Icarus.Controllers.Managers
 		#region Methods
 		public LoginResult RetrieveLoginResult(User user)
 		{
-			// TODO: Request a token from Auth0
+			var client = new RestClient(_url);
+			var request = new RestRequest("oauth/token", Method.POST);
+			var tokenRequest = RetrieveTokenRequest();
+			var tokenObject = JsonConvert.SerializeObject(tokenRequest);
+			request.AddParameter("application/json; charset=utf-8", 
+								 tokenObject, ParameterType.RequestBody);
+			request.RequestFormat = DataFormat.Json;
+
+			IRestResponse response = client.Execute(request);
+
+
+			var tokenResult = JsonConvert
+							  .DeserializeObject<Token>(response.Content);
 
 			return new LoginResult
 			{
-				UserId = 0,
+				UserId = user.Id,
 				Username = user.Username,
-				Token = "gggg",
-				Expiration = 500
+				Token = tokenResult.AccessToken,
+				TokenType = tokenResult.TokenType,
+				Expiration = tokenResult.Expiration
+			};
+		}
+		
+		private TokenRequest RetrieveTokenRequest()
+		{
+			return new TokenRequest
+			{
+				ClientId = _clientId,
+				ClientSecret = _clientSecret,
+				Audience = _audience,
+				GrantType = _grantType
 			};
 		}
 
 		private void InitializeValues()
 		{
-			// TODO: implement parse values necessary to 
-			// retrieve a token from the appSettings using
-			// the _config object
+			_clientId = _config["Auth0:ClientId"];
+			_clientSecret = _config["Auth0:ClientSecret"];
+			_audience = _config["Auth0:ApiIdentifier"];
+			_grantType = "client_credentials";
+			_url = $"https://{_config["Auth0:Domain"]}";
+
+			//PrintCredentials();
+		}
+
+		// For testing purposes
+		private void PrintCredentials()
+		{
+			Console.WriteLine("Auth0 credentials:");
+			Console.WriteLine($"Client Id: {_clientId}");
+			Console.WriteLine($"Client Secret: {_clientSecret}");
+			Console.WriteLine($"Audience: {_audience}");
+			Console.WriteLine($"Url: {_url}");
+		}
+		#endregion
+
+
+		#region Classes
+		private class TokenRequest
+		{
+			[JsonProperty("client_id")]
+			public string ClientId { get; set; }
+			[JsonProperty("client_secret")]
+			public string ClientSecret { get; set; }
+			[JsonProperty("audience")]
+			public string Audience { get; set; }
+			[JsonProperty("grant_type")]
+			public string GrantType { get; set; }
+		}
+		private class Token
+		{
+			[JsonProperty("access_token")]
+			public string AccessToken { get; set; }
+			[JsonProperty("expires_in")]
+			public int Expiration { get; set; }
+			[JsonProperty("token_type")]
+			public string TokenType { get; set; }
 		}
 		#endregion
 	}