public List <string> SimulateFeed(string UserFilePath, string TweetFilePath)
{
List <string> feedList = new List <string>();
try
{
if (inputRetriever == null)
{
throw new ArgumentNullException();
}
string userFileData = inputRetriever.GetData(UserFilePath);
if (string.IsNullOrEmpty(userFileData) == true || validator.TryValidate(userFileData, ValidateOptions.UsASCII) == false)
{
throw new Exception();
}
string tweetfileData = inputRetriever.GetData(TweetFilePath);
if (string.IsNullOrEmpty(tweetfileData) == true || validator.TryValidate(tweetfileData, ValidateOptions.UsASCII) == false)
{
throw new Exception();
}
IDictionary <string, string> users = null;
string[] userlines = userFileData.Split(GlobalVar.NewLineArray, StringSplitOptions.RemoveEmptyEntries);
foreach (var userline in userlines)
{
users = userRepository.CreateFollowAssociationByLine(userline);
}
IDictionary <string, ArrayList> tweets = null;
string[] tweetLines = tweetfileData.Split(GlobalVar.NewLineArray, StringSplitOptions.RemoveEmptyEntries);
foreach (var tweetLine in tweetLines)
{
tweets = tweetReposity.CreateUserTweetAssociation(tweetLine);
}
var usersList = users.GetDictionaryKeyValueToList();
if (usersList == null)
{
throw new ArgumentNullException();
}
foreach (var userKey in usersList)
{
if (logger.TryLog($"{userKey}") == false)
{
throw new Exception();
}
IList <string> orderedTweetList = new List <string>();
ArrayList userTweetList;
if (tweets.TryGetValue(userKey, out userTweetList) == true)
{
foreach (var ts in userTweetList)
{
orderedTweetList.Add(string.Concat(ts.ToString(), Seperator, userKey));
}
}
string userFollowedKeys;
if (users.TryGetValue(userKey, out userFollowedKeys) == true)
{
foreach (var followedKey in userFollowedKeys.Split(GlobalVar.CommaCharArray))
{
ArrayList followedTweetList;
if (tweets.TryGetValue(followedKey, out followedTweetList) == true)
{
foreach (var followedTweet in followedTweetList)
{
orderedTweetList.Add(string.Concat(followedTweet.ToString(), Seperator, followedKey));
}
}
}
}
foreach (var orderedTweet in orderedTweetList.OrderBy(x => x))
{
string tweetUser = orderedTweet.GetSubstringByKey(Seperator, SubstringOptions.AfterKey);
string userTWeet = orderedTweet.GetSubstringByKey(Seperator, SubstringOptions.BeforeKey).Substring(1);
logger.TryLog(CreateTweetFeed(tweetUser, userTWeet));
feedList.Add(CreateTweetFeed(tweetUser, userTWeet));
}
}
}
catch (Exception e)
{
//Log an exception using the logger class
logger.TryLog($"Exceptiong thrown : {e.ToString()}");
feedList.Add($"Exceptiong thrown : {e.ToString()}");
}
return(feedList);
}