Scala Pattern Matching Exercise with Dates and regular expressions.

ScalaPatternMatchingWithDates.sc

import java.time.LocalDate

val digitDate = """(\d\d)-(\d\d)""".r
val letterDate = """(\d\d)-([a-zA-Z]{3})""".r

def toStrHiveDateFrmt(str: String): String = str match {
  case ""                     => "0001-01-01"
  case digitDate(day, month)  => {
    val currentYear = LocalDate.now().getYear
    val tmpDate = LocalDate.of(currentYear, Integer.valueOf(month), Integer.valueOf(day));
    tmpDate.toString
  }
  case letterDate(day, month) => {
    //TODO Implement
    "letter"
  }
  case _                      => {
    //TODO Throw Exception
    "oops"
  }
}

toStrHiveDateFrmt("01-12")