/// <summary>
/// calls the twitter api to get timeline results for a user
/// </summary>
/// <returns></returns>
public static List <Status> GetUserTimeline(TimelineParams inputParams)
{
// check the cache for existing data
List <Status> tweets = (List <Status>)CacheHelper.GetFromCache(CacheKey.UserTimeline, BuildParamString(inputParams));
if (tweets == null)
{
tweets = new List <Status>();
ulong lastTweetId = 0;
string searchScreenName;
// a valid context
TwitterContext context = ContextHelper.GetContext();
// if a screen name has not been provided then get the current users screen name and last tweet id
if (string.IsNullOrEmpty(inputParams.ScreenName))
{
User authenticatedUser = ContextHelper.GetAuthenticatedUser();
searchScreenName = authenticatedUser.Identifier.ScreenName;
if (authenticatedUser.Status != null)
{
lastTweetId = ulong.Parse(authenticatedUser.Status.StatusID);
}
}
// if a screen name has been provided then get the user and store thier last tweet id
else
{
searchScreenName = inputParams.ScreenName;
var users = from u in context.User
where u.Type == UserType.Show &&
u.ScreenName == inputParams.ScreenName
select u;
User user = users.SingleOrDefault();
lastTweetId = ulong.Parse(user.Status.StatusID);
}
try
{
// Here it is necesary to get the tweets in chunks and add the results to the tweets list
// as the number of results returned from the api call is effectively up to the count supplied
// due to limitations in the twitter REST api
//set a max loops value as a backup
int maxloops = 5, count = 0;
while (tweets.Count < inputParams.TweetCount && count < maxloops)
{
//increment the count
count++;
List <Status> chunkList;
chunkList = (from tweet in context.Status
where tweet.Type == StatusType.User &&
tweet.ExcludeReplies == !inputParams.ShowReplies &&
tweet.IncludeRetweets == inputParams.IncludeRetweets &&
tweet.Count == inputParams.TweetCount &&
tweet.ScreenName == searchScreenName &&
tweet.MaxID == lastTweetId
orderby tweet.CreatedAt descending
select tweet).ToList();
// add the chunk items into the tweet list
foreach (Status tweet in chunkList)
{
if (tweets.Count < inputParams.TweetCount)
{
tweets.Add(tweet);
}
}
// store the last tweet recieved so we dont get the same ones next loop (-1 to prevent re-retrieving the last tweet)
if (tweets.Count > 0)
{
lastTweetId = ulong.Parse(chunkList[chunkList.Count - 1].StatusID) - 1;
}
}
CacheHelper.AddToCache(tweets, ConfigHelper.GetAppSetting <int>(ConfigKey.TwitterCacheDuration, 20), CacheKey.UserTimeline, BuildParamString(inputParams));
}
catch (TwitterQueryException ex)
{
}
}
return(tweets);
}
/// <summary>
/// calls the twitter api to get tweets form a list
/// </summary>
/// <returns></returns>
public static List <Status> GetList(TimelineParams inputParams)
{
// check the cache for existing data
List <Status> tweets = (List <Status>)CacheHelper.GetFromCache(CacheKey.UserTimeline, BuildParamString(inputParams));
if (tweets == null)
{
tweets = new List <Status>();
string searchScreenName = inputParams.ScreenName;
ulong lastTweetId = 0;
// a valid context
TwitterContext context = ContextHelper.GetContext();
// if a screen name has not been provided then get the current users screen name
if (string.IsNullOrEmpty(inputParams.ScreenName))
{
User authenticatedUser = ContextHelper.GetAuthenticatedUser();
searchScreenName = authenticatedUser.Identifier.ScreenName;
}
try
{
// Here it is necesary to get the tweets in chunks and add the results to the tweets list
// as the number of results returned from the api call is effectively up to the count supplied
// due to limitations in the twitter REST api
//set a max loops value as a backup
int maxloops = 5, count = 0;
while (tweets.Count < inputParams.TweetCount && count < maxloops)
{
//increment the count
count++;
List <Status> chunkList;
if (lastTweetId == 0)
{
chunkList = (from list in context.List
where list.Type == ListType.Statuses &&
list.OwnerScreenName == searchScreenName &&
list.Slug == inputParams.ListName && // name of list to get statuses for
list.Count == inputParams.TweetCount
select list)
.First().Statuses;
}
else
{
chunkList = (from list in context.List
where list.Type == ListType.Statuses &&
list.OwnerScreenName == searchScreenName &&
list.Slug == inputParams.ListName && // name of list to get statuses for
list.Count == inputParams.TweetCount &&
list.MaxID == lastTweetId
select list)
.First().Statuses;
}
// add the chunk items into the tweet list
foreach (Status tweet in chunkList)
{
if (tweets.Count < inputParams.TweetCount && (inputParams.IncludeRetweets || (tweet.RetweetedStatus == null || tweet.RetweetedStatus.User == null)))
{
tweets.Add(tweet);
}
}
// store the last tweet recieved so we dont get the same ones next loop (-1 to prevent re-retrieving the last tweet)
if (tweets.Count > 0)
{
lastTweetId = ulong.Parse(chunkList[chunkList.Count - 1].StatusID) - 1;
}
}
CacheHelper.AddToCache(tweets, ConfigHelper.GetAppSetting <int>(ConfigKey.TwitterCacheDuration, 20), CacheKey.UserTimeline, BuildParamString(inputParams));
}
catch (TwitterQueryException ex)
{
}
}
return(tweets);
}
