public Passage ConnectRegions(Region firstRegion, Region secondRegion, int distance)
{
if (firstRegion == null || secondRegion == null)
{
return(null);
}
var passage = new Passage()
{
FirstRegionID = firstRegion.ID,
SecondRegionID = secondRegion.ID,
Distance = distance
};
//this will be not be called frequently. We will add some new checks for this.
if (DoesPassageExist(firstRegion, secondRegion))
{
return(null); //this is acceptable.
}
regionRepository.AddPassage(passage);
regionRepository.SaveChanges();
Console.WriteLine($"Regions {firstRegion.Name} and {secondRegion.Name} connected!");
return(passage);
}