private void GetThreePartSuggestions(DatePartParser firstPart,
DatePartParser secondPart,
DatePartParser thirdPart,
List <Suggestion> newSuggestions,
DateTime currentDate)
{
// Check Possible Day (Of Month) and Month and Year
if ((firstPart.DateType & (DateTypeFlags.PossibleDayOfMonth | DateTypeFlags.DefiniteDayOfMonth)) > 0 &&
(secondPart.DateType & (DateTypeFlags.PossibleMonth | DateTypeFlags.DefinitieMonth)) > 0 &&
(thirdPart.DateType & (DateTypeFlags.PossibleYear | DateTypeFlags.DefiniteYear)) > 0)
{
var suggestedDate = currentDate
.SetDayOfMonth(firstPart.DayOfMonthValue)
.SetMonth(secondPart.MonthValue)
.SetYear(thirdPart.YearValue);
var probability = (firstPart.DayOfMonthProbability
+ secondPart.MonthProbability
+ thirdPart.YearProbability) / 3;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
// Check Possible Month, Day Of Month and Year
if ((secondPart.DateType & (DateTypeFlags.PossibleDayOfMonth | DateTypeFlags.DefiniteDayOfMonth)) > 0 &&
(firstPart.DateType & (DateTypeFlags.PossibleMonth | DateTypeFlags.DefinitieMonth)) > 0 &&
(thirdPart.DateType & (DateTypeFlags.PossibleYear | DateTypeFlags.DefiniteYear)) > 0)
{
var suggestedDate = currentDate
.SetDayOfMonth(secondPart.DayOfMonthValue)
.SetMonth(firstPart.MonthValue)
.SetYear(thirdPart.YearValue);
var probability = (secondPart.DayOfMonthProbability
+ firstPart.MonthProbability
+ thirdPart.YearProbability) / 3;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
}
public IEnumerable <Suggestion> GetFirstSuggestion(string searchText, object currentValue)
{
var currentDate = currentValue is DateTime ? (DateTime)currentValue : DateTime.Now;
var newSuggestions = new List <Suggestion>();
// Ignore if first character is + or -
if (searchText.Length >= 1)
{
var firstCharacter = searchText[0];
if (firstCharacter == '+' || firstCharacter == '-')
{
return(newSuggestions);
}
}
// Find the parts in the date.
var dateParts = Regex.Split(searchText.ToLower(),
@"[^a-zA-Z0-9]+").ToList();
// Remove empty parts
foreach (var part in dateParts.ToList())
{
if (string.IsNullOrWhiteSpace(part))
{
dateParts.Remove(part);
}
}
switch (dateParts.Count)
{
default:
return(newSuggestions);
case 1:
var part = new DatePartParser(dateParts[0], 1, currentDate);
GetSinglePartSuggestions(part, newSuggestions, currentDate);
break;
case 2:
{
var firstPart = new DatePartParser(dateParts[0], 1, currentDate);
var secondPart = new DatePartParser(dateParts[1], 2, currentDate);
GetTwoPartSuggestions(firstPart, secondPart, newSuggestions, currentDate);
break;
}
case 3:
{
var firstPart = new DatePartParser(dateParts[0], 1, currentDate);
var secondPart = new DatePartParser(dateParts[1], 2, currentDate);
var thirdPart = new DatePartParser(dateParts[2], 3, currentDate);
GetThreePartSuggestions(firstPart, secondPart, thirdPart, newSuggestions, currentDate);
}
break;
}
return(newSuggestions);
}
private void GetSinglePartSuggestions(DatePartParser part,
List <Suggestion> newSuggestions,
DateTime currentDate)
{
// Check Possible Day (Of Month)
if ((part.DateType & (DateTypeFlags.PossibleDayOfMonth | DateTypeFlags.DefiniteDayOfMonth)) > 0)
{
// Possible or definite day of month
var suggestedDate = currentDate.SetDayOfMonth(part.DayOfMonthValue);
var probability = part.DayOfMonthProbability;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
// Check Day of Week
if ((part.DateType & DateTypeFlags.DefiniteDayOfWeek) > 0)
{
// Definite day of week
// Next Day
var suggestedDate = currentDate.NextDayOfWeek(part.DayOfWeekValue);
var probability = 70;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
// Previous Day
suggestedDate = currentDate.PreviousDayOfWeek(part.DayOfWeekValue);
probability = 40;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
// Check Possible Month
if ((part.DateType & (DateTypeFlags.PossibleMonth | DateTypeFlags.DefinitieMonth)) > 0)
{
// Possible or definite month
var suggestedDate = currentDate.SetMonth(part.MonthValue);
var probability = part.MonthProbability;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
// Check Possible Year
if ((part.DateType & (DateTypeFlags.PossibleYear | DateTypeFlags.DefiniteYear)) > 0)
{
// Possible or definite year
var suggestedDate = currentDate.SetYear(part.YearValue);
var probability = part.YearProbability;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
}
private void GetTwoPartSuggestions(DatePartParser firstPart,
DatePartParser secondPart,
List <Suggestion> newSuggestions,
DateTime currentDate)
{
// Check Possible Day (Of Month) and Month
if ((firstPart.DateType & (DateTypeFlags.PossibleDayOfMonth | DateTypeFlags.DefiniteDayOfMonth)) > 0 &&
(secondPart.DateType & (DateTypeFlags.PossibleMonth | DateTypeFlags.DefinitieMonth)) > 0)
{
var suggestedDate = currentDate.SetDayOfMonth(firstPart.DayOfMonthValue).SetMonth(secondPart.MonthValue);
var probability = (firstPart.DayOfMonthProbability + secondPart.MonthProbability) / 2;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
// Check Possible Month and Day of Month
if ((secondPart.DateType & (DateTypeFlags.PossibleDayOfMonth | DateTypeFlags.DefiniteDayOfMonth)) > 0 &&
(firstPart.DateType & (DateTypeFlags.PossibleMonth | DateTypeFlags.DefinitieMonth)) > 0)
{
var suggestedDate = currentDate.SetDayOfMonth(secondPart.DayOfMonthValue).SetMonth(firstPart.MonthValue);
var probability = (secondPart.DayOfMonthProbability + firstPart.MonthProbability) / 2;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
// Check Day of Week and Day (Of Month)
if ((firstPart.DateType & DateTypeFlags.DefiniteDayOfWeek) > 0 &&
(secondPart.DateType & (DateTypeFlags.PossibleDayOfMonth | DateTypeFlags.DefiniteDayOfMonth)) > 0)
{
var suggestedDate = currentDate.NextDate(firstPart.DayOfWeekValue, secondPart.DayOfMonthValue);
var probability = 70;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
suggestedDate = currentDate.PreviousDate(firstPart.DayOfWeekValue, secondPart.DayOfMonthValue);
probability = 60;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
// Check Possible Month and year
if ((firstPart.DateType & (DateTypeFlags.PossibleMonth | DateTypeFlags.DefinitieMonth)) > 0 &&
(secondPart.DateType & (DateTypeFlags.PossibleYear | DateTypeFlags.DefiniteYear)) > 0)
{
var suggestedDate = currentDate.SetMonth(firstPart.MonthValue).SetYear(secondPart.YearValue);
var probability = (firstPart.MonthProbability + secondPart.YearProbability) / 2;
if (currentDate != suggestedDate)
{
var s
= new Suggestion
(
"",
suggestedDate.ToShortDateString(),
"",
probability,
suggestedDate
);
newSuggestions.Add(s);
}
}
}
