public KnowledgeLicense Update(KnowledgeLicense knowledgeLicense, KnowledgeQualitys knowledgeQuality)
{
if (IsEasyButEarlyToRepeat(knowledgeLicense, knowledgeQuality))
{
knowledgeQuality = KnowledgeQualitys.StillRemember;
}
return(knowledgeGaranter[knowledgeQuality].Grant(knowledgeLicense));
}
public static KnowledgeLicense GetLicense(this UserWordPair userWordPair)
{
var knowledgeLicense = new KnowledgeLicense
{
Period = userWordPair.LearningPeriod,
RepeatTime = userWordPair.TimeGap
};
return(knowledgeLicense);
}
public void StillRememberBehavior()
{
// prep
var licenseManager = new KnowledgeLicenseCalculator();
var knowledgeLicense = new KnowledgeLicense
{
Period = 1,
RepeatTime = DateTime.Now
};
var knowledgeQuality = KnowledgeQualitys.StillRemember;
var expectedPeriod = 1;
// act
KnowledgeLicense UpdatedKnowledgeLicense = licenseManager.Update(knowledgeLicense, knowledgeQuality);
// assert
Assert.Equal(expectedPeriod, UpdatedKnowledgeLicense.Period);
}
public void EasyToRememberButEarlyRepeatGranting()
{
// prep
var licenseManager = new KnowledgeLicenseCalculator();
var knowledgeLicense = new KnowledgeLicense
{
Period = 0,
RepeatTime = DateTime.MaxValue
};
var knowledgeQuality = KnowledgeQualitys.EasyToRemember;
var expectedPeriod = 0;
// act
KnowledgeLicense UpdatedKnowledgeLicense = licenseManager.Update(knowledgeLicense, knowledgeQuality);
// assert
Assert.Equal(expectedPeriod, UpdatedKnowledgeLicense.Period);
}
public void EasyToRememberBehavior()
{
// prep
var licenseManager = new KnowledgeLicenseCalculator();
var knowledgeLicense = new KnowledgeLicense();
var knowledgeQuality = KnowledgeQualitys.EasyToRemember;
var expectedPeriod = 1;
// act
KnowledgeLicense UpdatedKnowledgeLicense = licenseManager.Update(knowledgeLicense, knowledgeQuality);
bool expectedTimeLarger = UpdatedKnowledgeLicense.RepeatTime > DateTime.UtcNow;
// assert
Assert.Equal(UpdatedKnowledgeLicense.Period, knowledgeLicense.Period);
Assert.Equal(UpdatedKnowledgeLicense.RepeatTime, knowledgeLicense.RepeatTime);
Assert.Equal(expectedPeriod, UpdatedKnowledgeLicense.Period);
Assert.True(expectedTimeLarger);
}
/// <summary>
/// This method for updating <see cref="UserWordPair" />'s learning period and time to learning
/// using PairKnowledges from IKnowledgeQualifier.
/// </summary>
/// <param name="userWordPairs"></param>
/// <param name="PairKnowledges"></param>
/// <returns></returns>
private IEnumerable <UserWordPair> UpdateLicenseInformation(IEnumerable <UserWordPair> userWordPairs,
Dictionary <int, KnowledgeQualitys> PairKnowledges)
{
// for every word pair in user dictionary
foreach (UserWordPair userWordPair in userWordPairs)
{
// get quality from qualifier
KnowledgeQualitys quality = PairKnowledges[userWordPair.WordPairId];
// get wordpair license
KnowledgeLicense knowledgeLicense = userWordPair.GetLicense();
// update license by license and quality
knowledgeLicense = knowledgeLicenseCalculator.Update(knowledgeLicense, quality);
// set license in pair strucure
userWordPair.SetLicense(knowledgeLicense);
}
return(userWordPairs);
}
public override KnowledgeLicense Grant(KnowledgeLicense knowledgeLicense)
{
knowledgeLicense.Period += 1;
return(base.Grant(knowledgeLicense));
}
public override KnowledgeLicense Grant(KnowledgeLicense knowledgeLicense)
{
return(base.Grant(knowledgeLicense));
}
public virtual KnowledgeLicense Grant(KnowledgeLicense knowledgeLicense)
{
int days = Ebbinghaus(knowledgeLicense.Period);
knowledgeLicense.RepeatTime = DateTime.UtcNow.AddDays(days);
return knowledgeLicense;
}
public override KnowledgeLicense Grant(KnowledgeLicense knowledgeLicense)
{
knowledgeLicense.Period = Convert.ToInt16(Math.Truncate(0.2 * knowledgeLicense.Period));
return(base.Grant(knowledgeLicense));
}
public static UserWordPair SetLicense(this UserWordPair userWordPair, KnowledgeLicense knowledgeLicense)
{
userWordPair.LearningPeriod = knowledgeLicense.Period;
userWordPair.TimeGap = knowledgeLicense.RepeatTime;
return(userWordPair);
}
private bool IsNotGrantingTime(KnowledgeLicense knowledgeLicense)
{
return(knowledgeLicense.RepeatTime > DateTime.UtcNow.AddDays(DAYS_GRANTING_TIMESPAN));
}
private bool IsEasyButEarlyToRepeat(KnowledgeLicense knowledgeLicense, KnowledgeQualitys knowledgeQuality)
{
return(knowledgeQuality.Equals(KnowledgeQualitys.EasyToRemember) && IsNotGrantingTime(knowledgeLicense));
}
