private BaseFilterModel GetFilterWithTheNearestEnglishLevel(int neededCount, EnglishLevel userEnglishLevel)
{
var grammarParts = new List <string>();
var englishLevels = new List <EnglishLevel>();
var totalCount = 0;
englishLevels.Add(userEnglishLevel);
grammarParts.AddRange(TasksInformationModels[userEnglishLevel].GrammarPartCount.Keys);
totalCount += TasksInformationModels[userEnglishLevel].GrammarPartCount.Values.Sum();
var sortedEnglishLevelsByNearerToUser = EnglishLevelUtils.GetSortedEnglishLevelsByNearest(userEnglishLevel);
foreach (var englishLevel in sortedEnglishLevelsByNearerToUser)
{
if (TasksInformationModels.TryGetValue(englishLevel, out var levelInformation))
{
englishLevels.Add(englishLevel);
grammarParts.AddRange(TasksInformationModels[englishLevel].GrammarPartCount.Keys);
totalCount += TasksInformationModels[englishLevel].GrammarPartCount.Values.Sum();
if (totalCount >= neededCount)
{
break;
}
}
}
var baseFilterModel = new BaseFilterModel();
baseFilterModel.EnglishLevel = englishLevels;
baseFilterModel.GrammarPart = grammarParts;
return(baseFilterModel);
}
public BaseFilterModel GetFilterModelForUser(int neededCount, UserInformationModel userInformation)
{
var totalCountOfTasks = TasksInformationModels.Values.Sum(x => x.GrammarPartCount.Values.Sum());
if (totalCountOfTasks < neededCount)
{
return(GetDefaultFilterModel());
}
if (!TasksInformationModels.TryGetValue(userInformation.EnglishLevel, out var userLevelInfo))
{
return(GetDefaultFilterModel());
}
var forUserLevelFilter = GetFilterForUserEnglishLevel(neededCount, userInformation, userLevelInfo);
if (forUserLevelFilter != null)
{
return(forUserLevelFilter);
}
return(GetFilterWithTheNearestEnglishLevel(neededCount, userInformation.EnglishLevel));
}
