private OffsetDateTime CreateUpdatedOffsetDateTimeFromTokens(OffsetDateTime existingOffsetDateTime, DateToken dateToken, TimeToken timeToken)
{
var existingLocalDateTime = existingOffsetDateTime.LocalDateTime;
var day = existingLocalDateTime.Day;
var month = existingLocalDateTime.Month;
var year = existingLocalDateTime.Year;
if (dateToken != null)
{
if (dateToken.Day.HasValue) day = dateToken.Day.Value;
if (dateToken.Month.HasValue) month = dateToken.Month.Value;
if (dateToken.Year.HasValue) year = dateToken.Year.Value;
}
var hour = 12;
var minute = 0;
if (timeToken != null)
{
hour = timeToken.Hour;
if (timeToken.Meridiem == Meridiem.AM && hour == 12) hour = 0;
if (timeToken.Meridiem == Meridiem.PM && hour < 12) hour += 12;
minute = timeToken.Minute ?? 0;
}
try
{
return new LocalDateTime(year, month, day, hour, minute).WithOffset(existingOffsetDateTime.Offset);
}
catch (ArgumentOutOfRangeException)
{
throw new InvalidTokenValueException(ErrorMessages.InvalidDateTime);
}
}
private Answer GetAnswerToTimeConversionQuestion(Question question, DateToken knownDateToken, TimeToken knownTimeToken, CityOrTimezoneToken knownCityOrTimezone, CityOrTimezoneToken unknownCityOrTimezone)
{
var knownEntityOffsetDateTime = CreateUpdatedOffsetDateTimeFromTokens(knownCityOrTimezone.GetCurrentTimeAsOffsetDateTime(), knownDateToken, knownTimeToken);
Instant knownCityOrTimezoneInstant;
String note = null;
if (knownCityOrTimezone.GetType() == typeof(CityToken))
{
var cityToken = (CityToken)knownCityOrTimezone;
ZoneLocalMapping knownCityOrTimezoneZoneLocalMapping = DateTimeZoneProviders.Tzdb[cityToken.City.Timezone].MapLocal(knownEntityOffsetDateTime.LocalDateTime);
if (knownCityOrTimezoneZoneLocalMapping.Count == 1)
{
knownCityOrTimezoneInstant = knownCityOrTimezoneZoneLocalMapping.Single().ToInstant();
}
else if (knownCityOrTimezoneZoneLocalMapping.Count > 1)
{
knownCityOrTimezoneInstant = knownCityOrTimezoneZoneLocalMapping.First().ToInstant();
note = String.Format("In {0} the time {1} occurs twice due to daylight saving time changes when clocks are put back, we are using the first occurance of that time.",
cityToken.City.FormattedName,
knownEntityOffsetDateTime.LocalDateTime.GetFormattedTimeAndDate());
}
else
{
knownCityOrTimezoneInstant = knownCityOrTimezoneZoneLocalMapping.LateInterval.Start.WithOffset(knownCityOrTimezoneZoneLocalMapping.LateInterval.WallOffset).ToInstant();
note = String.Format("In {0} the time {1} does not occur due to daylight saving time changes when clocks are put forward, we are using the next valid time.",
cityToken.City.FormattedName,
knownEntityOffsetDateTime.LocalDateTime.GetFormattedTimeAndDate());
}
}
else if (knownCityOrTimezone.GetType() == typeof(TimezoneToken))
{
var timezoneToken = (TimezoneToken)knownCityOrTimezone;
knownCityOrTimezoneInstant = knownEntityOffsetDateTime.LocalDateTime.WithOffset(timezoneToken.Timezone.Offset).ToInstant();
}
else
{
throw new NotImplementedException();
}
var answerText = String.Format("It is {0} in {1} when it is {2} in {3}",
unknownCityOrTimezone.GetLocalDateTime(knownCityOrTimezoneInstant).GetFormattedTimeAndDate(),
unknownCityOrTimezone.GetFormattedNameAndTimezone(knownCityOrTimezoneInstant),
knownEntityOffsetDateTime.LocalDateTime.GetFormattedTimeAndDate(),
knownCityOrTimezone.GetFormattedNameAndTimezone(knownEntityOffsetDateTime.ToInstant()));
var answer = new Answer(question, true, true, answerText);
answer.Note = note;
return answer;
}
private IList<Token> GetDayMonthYearFormattedDates(Question question)
{
var tokens = new List<Token>();
var monthNamesRegex = "(jan(uary)?|febr(uary)?|mar(ch)?|apr(il)?|may|jun(e)?|jul(y)?|aug(ust)?|sep(tember)?|oct(ober)?|nov(ember)?|dec(ember)?)";
var matches = Regex.Matches(question.QuestionText, @"(?<day>\d{1,2})(th|st|nd|rd)?(\sof|/|-)?\s?(?<month_name>" + monthNamesRegex + @")((/|-|\s)(?<year>\d{2,4}))?", RegexOptions.IgnoreCase);
foreach (Match match in matches)
{
Group group = match.Groups[0];
var monthNameMatch = match.Groups["month_name"];
var dayMatch = match.Groups["day"];
var yearMatch = match.Groups["year"];
var month = GetMonth(monthNameMatch.Value);
var day = int.Parse(dayMatch.Value);
int? year = null;
if(!string.IsNullOrEmpty(yearMatch.Value)) year = int.Parse(yearMatch.Value);
year = MakeYearInThisCenturyIfOnly2Digits(year);
var tokenResult = new DateToken(group.Value, group.Index, day, month, year);
tokens.Add(tokenResult);
}
return tokens;
}
private IList<Token> GetMonthDayYearFormattedDates(Question question)
{
var tokens = new List<Token>();
var monthNamesRegex = "(jan(uary)?|feb(ruary)?|mar(ch)?|apr(il)?|may|jun(e)?|jul(y)?|aug(ust)?|sep(tember)?|oct(ober)?|nov(ember)?|dec(ember)?)";
var matches = Regex.Matches(question.QuestionText, @"(?<month_name>" + monthNamesRegex + @")(\sthe\s|,\s|,|\s)(?<first_number>\d{1,4})(th|st|nd|rd)?(?<second_number>\s?\d{4})?", RegexOptions.IgnoreCase);
foreach (Match match in matches)
{
Group group = match.Groups[0];
var monthNameMatch = match.Groups["month_name"];
var firstNumberMatch = match.Groups["first_number"];
var secondNumberMatch = match.Groups["second_number"];
var month = GetMonth(monthNameMatch.Value);
int? firstNumber = int.Parse (firstNumberMatch.Value);
int? secondNumber = null;
if(!string.IsNullOrEmpty (secondNumberMatch.Value)) secondNumber = int.Parse(secondNumberMatch.Value);
int? day = null;
int? year = null;
if(secondNumber.HasValue)
{
day = firstNumber;
year = secondNumber;
}
else
{
if(firstNumber <= 31){
day = firstNumber;
}
else{
year = firstNumber;
}
}
year = MakeYearInThisCenturyIfOnly2Digits(year);
var tokenResult = new DateToken(group.Value, monthNameMatch.Index, day, month, year);
tokens.Add(tokenResult);
}
return tokens;
}
private IList<Token> GetHyphenAndSlashFormattedDates(Question question)
{
var tokens = new List<Token>();
var matches = Regex.Matches(question.QuestionText, @"(?<first_number>\d{1,2})(-|/)(?<second_number>\d{1,2})(-|/)(?<year>\d{2,4})", RegexOptions.IgnoreCase);
foreach (Match match in matches)
{
Group group = match.Groups[0];
var yearMatch = match.Groups["year"];
var firstNumberMatch = match.Groups["first_number"];
var secondNumberMatch = match.Groups["second_number"];
int? year = int.Parse(yearMatch.Value);
var firstNumber = int.Parse(firstNumberMatch.Value);
var secondNumber = int.Parse(secondNumberMatch.Value);
int day = secondNumber;
int month = firstNumber;
if(firstNumber > 12 && secondNumber <= 12){
day = firstNumber;
month = secondNumber;
}
year = MakeYearInThisCenturyIfOnly2Digits(year);
var tokenResult = new DateToken(group.Value, yearMatch.Index, day, month, year);
tokens.Add(tokenResult);
}
return tokens;
}
private IList<Token> GetYearOnlyDates(Question question)
{
var tokens = new List<Token>();
var matches = Regex.Matches(question.QuestionText, @"\s(?<year>\d{4})(\s|$)", RegexOptions.IgnoreCase);
foreach (Match match in matches)
{
Group yearMatch = match.Groups["year"];
var year = int.Parse (yearMatch.Value);
var tokenResult = new DateToken(yearMatch.Value, yearMatch.Index, null, null, year);
tokens.Add(tokenResult);
}
return tokens;
}
