/// <summary>
/// Method to populate a derived Eta for ships we deem will use Duluth Canal
/// </summary>
/// <param name="shipTest">ship test permutation</param>
public static void Update(this ShipTest shipTest)
{
var inHarbor = shipTest.IsInDuluthSuperiorHarbor();
if (inHarbor && !shipTest.CanalEntryTimestamp.HasValue)
{
shipTest.CanalEntryTimestamp = DateTime.UtcNow.AddHours(CanalEntryTimestampOffset);
}
else if (!inHarbor)
{
shipTest.CanalEntryTimestamp = null;
}
if (shipTest.IsUnderway())
{
if (shipTest.IsWithinFiftyMilesOfDuluth())
{
if (shipTest.IsInDuluthSuperiorHarborForMoreThanHour())
{
if (shipTest.IsInStLouisBay())
{
shipTest.DerivedEta = CalculateEtaToDuluthFromStLouisBay(shipTest.Position, shipTest.Speed);
}
else if (shipTest.IsMovingTowardDuluth())
{
shipTest.DerivedEta = CalculateEtaToDuluth(shipTest.Position, shipTest.Speed);
}
}
else if (!inHarbor && shipTest.IsHeadingTowardDuluth())
{
shipTest.DerivedEta = CalculateEtaToDuluth(shipTest.Position, shipTest.Speed);
}
}
else if (shipTest.IsDestinationDuluth() && shipTest.IsMovingTowardDuluth())
{
shipTest.DerivedEta = shipTest.Eta;
}
}
}
/// <summary>
/// Evaluation method and logic. Similar to shipTest Processor logic
/// First, only evaluate ship that report navigational status == underway
/// Next, ask if ship is within 50 miles of the Duluth Harbor
/// Locate ship inside or outside harbor
/// For ships in the harbor, treat ships in St. Louis Bay differently than other ships
/// For ships outside the harbor, populate derived eta according to bearing to nearest port
/// </summary>
/// <param name="shipTest">shipTest object</param>
public static void Evaluate(ShipTest shipTest)
{
if (shipTest.IsUnderway())
{
if (shipTest.IsWithinFiftyMilesOfDuluth())
{
if (shipTest.IsInDuluthSuperiorHarborForMoreThanHour())
{
shipTest.Evaluation = shipTest.IsInStLouisBay() || shipTest.IsMovingTowardDuluth();
}
else
{
shipTest.Evaluation = !shipTest.IsInDuluthSuperiorHarbor() && shipTest.IsHeadingTowardDuluth();
}
}
else
{
shipTest.Evaluation = shipTest.IsDestinationDuluth() && shipTest.IsMovingTowardDuluth();
}
}
shipTest.Evaluation = shipTest.Evaluation == shipTest.DerivedEta.HasValue;
shipTest.Tally = Convert.ToInt32(shipTest.Evaluation);
}