1 files changed, 62 insertions, 0 deletions
diff --git a/slips/src/app/Marina/Domain/LeaseDurations.cs b/slips/src/app/Marina/Domain/LeaseDurations.cs
new file mode 100644
index 0000000..e87e567
--- /dev/null
+++ b/slips/src/app/Marina/Domain/LeaseDurations.cs
@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using Marina.Domain.Interfaces;
+
+namespace Marina.Domain {
+	public class LeaseDurations {
+		public static readonly ILeaseDuration Daily = new LeaseDuration( "Daily", 1, 1 );
+		public static readonly ILeaseDuration Weekly = new LeaseDuration( "Weekly", 2, 7 );
+		public static readonly ILeaseDuration Monthly = new LeaseDuration( "Monthly", 3, 30 );
+		public static readonly ILeaseDuration Yearly = new LeaseDuration( "Yearly", 4, 365 );
+		private static readonly ILeaseDuration NoDuration = new LeaseDuration( "No Duration", -1, 0 );
+		private static readonly ILeaseDuration UnknownDuration = new LeaseDuration( "Unknown", -1, 0 );
+
+		private class LeaseDuration : DomainObject, ILeaseDuration {
+			private readonly int _days;
+			private readonly string _name;
+
+			public LeaseDuration( string name, long id, int days ) : base( id ) {
+				_days = days;
+				_name = name;
+			}
+
+			public DateTime CalculateExpiryDateFrom( DateTime startDate ) {
+				return startDate.AddDays( _days ).Date.AddHours( 11 );
+			}
+
+			public string Name() {
+				return _name;
+			}
+
+			public bool IsSatisfiedBy( IDateRange range ) {
+				TimeSpan daysInRange = range.End( ).Subtract( range.Start( ) );
+				return _days <= daysInRange.Days;
+			}
+		}
+
+		public static ILeaseDuration FindFor( DateTime startDate, DateTime endDate ) {
+			foreach ( ILeaseDuration duration in AllDurations( ) ) {
+				if ( duration.IsSatisfiedBy( new DateRange( startDate, endDate ) ) ) {
+					return duration;
+				}
+			}
+			return NoDuration;
+		}
+
+		private static IEnumerable< ILeaseDuration > AllDurations() {
+			yield return Yearly;
+			yield return Monthly;
+			yield return Weekly;
+			yield return Daily;
+		}
+
+		public static ILeaseDuration FindBy( string duration ) {
+			foreach ( ILeaseDuration leaseDuration in AllDurations( ) ) {
+				if ( string.Compare( leaseDuration.Name( ), duration, true ) == 0 ) {
+					return leaseDuration;
+				}
+			}
+			return UnknownDuration;
+		}
+	}
+}
+\ No newline at end of file