private IEnumerable <Change> Find(ref BLModel.Alternate.Long.Airing airing)
{
var groupedAirings = GetAiringsToDiffOn(new[] { airing });
var changes = new List <BLModel.Alternate.Change.Change>();
foreach (var groupedAiring in groupedAirings)
{
try
{
if (AiringIsNew(groupedAiring))
{
var builder = new ChangeBuilder();
changes.Add(builder.BuildNewChange(groupedAiring.First()));
}
else if (ComparingTwoAirings(groupedAiring))
{
var currentAsset = groupedAiring.FirstOrDefault();
var originalAsset = groupedAiring.LastOrDefault();
changes.AddRange(Find(currentAsset, originalAsset));
}
else if (ComparingThreeAirings(groupedAiring))
{
var currentAsset = groupedAiring.FirstOrDefault();
var previousAsset = groupedAiring.Skip(1).FirstOrDefault();
var originalAsset = groupedAiring.LastOrDefault();
changes.AddRange(Find(currentAsset, previousAsset, originalAsset));
}
else if (AiringIsBeingDeleted(groupedAiring.Key))
{
var builder = new ChangeBuilder();
changes.Add(builder.BuildDeletion(groupedAiring.First()));
}
}
catch (Exception ex)
{
var current = groupedAiring.FirstOrDefault();
if (null != current)
{
var toThrow = new Exception(String.Format("Exception occurred while detecting change for Airing Id '{0}'. ", current.AiringId), ex);
throw toThrow;
}
throw ex;
}
}
return(changes);
}
private IEnumerable <FieldChange> Find(BLModel.Alternate.Long.Airing currentAsset, BLModel.Alternate.Long.Airing originalAiring)
{
var changeBuilder = new ChangeBuilder();
var currentJson = JsonConvert.SerializeObject(currentAsset);
var originalJson = JsonConvert.SerializeObject(originalAiring);
var currentAssetAsJson = JObject.Parse(currentJson);
var originalAssetAsJson = JObject.Parse(originalJson);
var differ = new JsonDiffer();
var results = differ.FindDifferences(currentAssetAsJson, originalAssetAsJson);
foreach (var change in results)
{
changeBuilder.SetCommonValues(change, currentAsset, originalAiring);
}
return(results);
}
