/// <summary>
/// Get count of days since last recipe preparation.
/// </summary>
/// <param name="recipeID">ID of the recipe for which count needed.</param>
/// <returns>Count of days that passed from last time selected recipe was cooked. E.g. if it was cooked yesterday, returns 1.</returns>
public int DaysFromLasCook(Guid recipeID)
{
DateTime?date = dayService.GetLastCookedDate(recipeID);
return(date != null
? (int)(DateTime.Now - date.Value).TotalDays
: int.MaxValue);
}