/// <summary>
/// 消息提示信息HTML作成
/// </summary>
/// <param name="item">題型參數</param>
/// <returns>HTML模板</returns>
private string GetTooltipHtml(SchoolClockFormula item)
{
StringBuilder html = new StringBuilder();
html.AppendLine(string.Format(TOOLTIP_HTML_FORMAT, item.LatestTime.GetTimeType.ToTimeSystemString(), item.LatestTime.TimeInterval.ToTimeIntervalTypeString()));
return(html.ToString());
}
/// <summary>
/// 時間段類型-深夜
/// </summary>
/// <param name="formula">答題結果參數</param>
/// <param name="type">指定分鐘數值</param>
private void LateNightTimeInterval(SchoolClockFormula formula, FourOperationsType type)
{
// 深夜[22:XX~23:XX]
formula.LatestTime.Hours = CommonUtil.GetRandomNumber(22, 23);
// 分鐘數值
formula.LatestTime.Minutes = type == FourOperationsType.Random ? CommonUtil.GetRandomNumber(0, 59)
: _assignMinutes[CommonUtil.GetRandomNumber(HourDivisionType.IntegralPoint, HourDivisionType.ThreeQuarters)];
// 秒數值
formula.LatestTime.Seconds = CommonUtil.GetRandomNumber(0, 59);
}
/// <summary>
/// 算式作成
/// </summary>
/// <param name="p">題型參數</param>
public override void MarkFormulaList(SchoolClockParameter p)
{
// 當前反推判定次數（一次推算內次數累加）
int defeated = 0;
// 按照指定數量作成相應的數學計算式
for (var i = 0; i < p.NumberOfQuestions; i++)
{
// 隨機獲取時間段類型中的一個類型
TimeIntervalType type = CommonUtil.GetRandomNumber(TimeIntervalType.Midnight, TimeIntervalType.LateNight);
SchoolClockFormula formula = new SchoolClockFormula
{
LatestTime = new TimeType()
{
Hours = 0, Minutes = 0, Seconds = 0
}
};
if (_timeIntervals.TryGetValue(type, out Action <SchoolClockFormula, FourOperationsType> timeInterval))
{
timeInterval(formula, p.FourOperationsType);
if (p.IsShowSeconds)
{
formula.LatestTime.Seconds = 0;
}
}
else
{
throw new ArgumentException(MessageUtil.GetMessage(() => MsgResources.E0002L, type.ToString()));
}
if (CheckIsNeedInverseMethod(p.Formulas, formula))
{
defeated++;
// 如果大於兩次則認為此題無法作成繼續下一題
if (defeated == INVERSE_NUMBER)
{
// 當前反推判定次數復原
defeated = 0;
continue;
}
i--;
continue;
}
p.Formulas.Add(formula);
}
}
/// <summary>
/// 判定是否需要反推并重新作成計算式
/// </summary>
/// <remarks>
/// 情況1:完全一致
/// 情況2:時分秒全零
/// </remarks>
/// <param name="preFormulas">已得到的算式</param>
/// <param name="currentFormula">當前算式</param>
/// <returns>需要反推：true 正常情況: false</returns>
private bool CheckIsNeedInverseMethod(IList <SchoolClockFormula> preFormulas, SchoolClockFormula currentFormula)
{
// 防止出現全零的情況
if (currentFormula.LatestTime.Hours == 0 && currentFormula.LatestTime.Minutes == 0 && currentFormula.LatestTime.Seconds == 0)
{
return(true);
}
// 判斷當前算式是否已經出現過
if (preFormulas.ToList().Any(d => d.LatestTime.Hours == currentFormula.LatestTime.Hours && d.LatestTime.Minutes == currentFormula.LatestTime.Minutes))
{
return(true);
}
return(false);
}
