/* https://dev.twitch.tv/docs/v5/reference/users */
/// <summary>
/// Gets a user object based on the OAuth token provided.
/// https://dev.twitch.tv/docs/v5/reference/users#get-user
/// </summary>
/// <returns>Authenticated <see cref="v5User"/> object.</returns>
public static async Task <v5User> GetUser(string oauth)
{
try
{
var blob = TwitchAPIv5Requests.GetRequest($"https://api.twitch.tv/kraken/user", oauth);
return(JsonConvert.DeserializeObject <v5User>(await blob, jSettings));
}
catch
{
return(null);
}
}
/// <summary>
/// Gets a single user object for the specified Twitch login name.
/// https://dev.twitch.tv/docs/v5/reference/users#get-users
/// </summary>
/// <param name="name">Twitch username to get user object for.</param>
/// <returns><see cref="v5User"/> object on success, null otherwise.</returns>
public static async Task <v5User> GetUsers(string username)
{
try
{
var blob = await TwitchAPIv5Requests.GetRequest($"https://api.twitch.tv/kraken/users?login={username}");
return(JsonConvert.DeserializeObject <GetUsers>(blob, jSettings).Users[0]);
}
catch (WebException)
{
return(null);
}
catch (JsonSerializationException)
{
return(null);
}
}
/// <summary>
/// Gets the user objects for the specified Twitch login names.
/// https://dev.twitch.tv/docs/v5/reference/users#get-users
/// </summary>
/// <param name="usernames"><see cref="IEnumerable{string}"/> of Twitch usernames to get.</param>
/// <returns><see cref="IEnumerable{User}"/> of <see cref="v5User"/> objects.</returns>
public static async Task <IEnumerable <v5User> > GetUsers(IEnumerable <string> usernames)
{
// Create an empty list to fill with results
List <v5User> TranslatedUsers = new List <v5User>();
// If the IEnumerable has more than 100 names to lookup, split in batches
if (usernames.Count() > 100)
{
// Using pure LINQ to group and create batches of 100 names
foreach (var batch in usernames.Select((x, index) => new { x, index }).GroupBy(x => x.index / 100, y => y.x))
{
// Translate this batch of max 100 selected names
TranslatedUsers.AddRange(await GetUsers(batch));
// Delay 500ms before requesting API endpoint again.
await Task.Delay(1000);
}
}
// IEnumerable has 100 or less names to lookup
else
{
// Join strings in the list with a comma as seperator
string concatUsernames = string.Join(",", usernames);
try
{
var blob = TwitchAPIv5Requests.GetRequest($"https://api.twitch.tv/kraken/users?login={concatUsernames}");
TranslatedUsers.AddRange(JsonConvert.DeserializeObject <GetUsers>(await blob, jSettings).Users);
}
catch
{
// Ignore if API or Deserialization error
// will just return an empty enumerable.
}
}
// Return list as enumerable fetched User objects
return(TranslatedUsers.AsEnumerable());
}
/* https://dev.twitch.tv/docs/v5/reference/streams */
/// <summary>
/// WARNING: HACKY METHOD 1000ms between API calls, Future will only accept userids
/// Gets stream information for a specified user.
/// https://dev.twitch.tv/docs/v5/reference/streams#get-stream-by-user
/// </summary>
/// <param name="channelName">username of the user to fetch the stream from.</param>
/// <returns>Returns <see cref="TwitchStream"/> when a stream is live, null if not or on error.</returns>
public static async Task <TwitchStream> GetStreamByUser(string channelName)
{
try
{
// Make the request to get user id from username
v5User user = await GetUsers(channelName);
if (user == null)
{
return(null);
}
await Task.Delay(500);
// Make the request
var blob = await TwitchAPIv5Requests.GetRequest($"https://api.twitch.tv/kraken/streams/{user.Id}");
// Deserialize into a JObject, not using reflection here yet.
JToken blobObj = JObject.Parse(blob);
// Check if 'stream' value is given or not
if (blobObj["stream"] != null)
{
// Stream is online, return TwitchStream object
return(blobObj.SelectToken("stream").ToObject <TwitchStream>());
}
else
{
// Stream is offline, return null
return(null);
}
}
catch
{
return(null);
}
}
/// <summary>
/// Checks if a specified user follows a specified channel.
/// https://dev.twitch.tv/docs/v5/reference/users#check-user-follows-by-channel
/// </summary>
/// <param name="userId">The id of the user to check.</param>
/// <param name="channelId">The id of the channel to check.</param>
/// <returns>If the user is following the channel, a <see cref="v5Follows"/> object is returned, else <see cref="null"/>.</returns>
/// <exception cref="WebException">On anything other than a 404.</exception>
public static async Task <v5Follows> CheckUserFollowsByChannel(string userId, string channelId)
{
try
{
// Make the request
var blob = await TwitchAPIv5Requests.GetRequest($"https://api.twitch.tv/kraken/users/{userId}/follows/channels/{channelId}");
// If the response returned successful then the
// specified user is following the specified channel
return(JsonConvert.DeserializeObject <v5Follows>(blob, jSettings));
}
catch (WebException ex)
{
// If the response returned a webexception with response 404 then the
// specified user is not following the specified channel, return null
if (((HttpWebResponse)ex.Response).StatusCode == HttpStatusCode.NotFound)
{
return(null);
}
// If response returned any other webexception, throw exception to handle
throw new Exception($"{((HttpWebResponse)ex.Response).StatusCode}");
}
}
