static void BuildDisplayName(StringBuilder sb, DiffMetadata property)
{
if (!property.IsCollectionItem)
{
sb.Append(property.DisplayName);
}
else
{
if (property.AfterIndex != null)
{
if (property.AfterIndex == property.BeforeIndex)
{
sb.AppendFormat("[{0}]", property.AfterIndex + 1);
}
else
{
if (property.BeforeIndex == null)
{
sb.AppendFormat("[{0}, added]", property.AfterIndex + 1);
}
else
{
sb.AppendFormat("[{0}, was {1}]", property.AfterIndex + 1, property.BeforeIndex + 1);
}
}
}
else if (property.BeforeIndex != null)
{
sb.Append("[removed]");
}
}
}
static void ReadableDiffInternal(StringBuilder sb, DiffMetadata diff)
{
var filteredProperties = diff
.FlattenHierarchy <DiffMetadata, Tuple <Stack <DiffMetadata>, DiffMetadata> >(child => child.Properties.Concat(child.Items), (stack, child) => Tuple.Create(stack, child))
.Where(ReadablePropertyFilter);
var properties = filteredProperties.OrderBy(s => s, new DiffStackComparer());
//.ThenBy(p => p.Item1.Count > 0 ? (int?) p.Item1.Peek().AfterIndex.GetValueOrDefault(int.MaxValue) : null)
//.ThenBy(p => p.Item1.Count > 0 ? (int?) p.Item1.Peek().Order : null)
//.ThenBy(p => p.Item1.Count > 0 ? p.Item1.Peek().DisplayName : null)
//.ThenBy(p => p.Item2.AfterIndex.GetValueOrDefault(int.MaxValue))
//.ThenBy(p => p.Item2.Order)
//.ThenBy(p => p.Item2.DisplayName);
foreach (var property in properties)
{
BuildDisplayName(sb, property);
sb.Append(ReadablePropertyValueSeparator);
if (!property.Item2.PropertyInBefore)
{
OutputValue(sb, property.Item2.AfterFormattedValue);
if (sb[sb.Length - 1] != '\n')
{
sb.Append(", ");
}
sb.Append("was not present");
}
else if (!property.Item2.PropertyInAfter)
{
sb.Append("No value present, was ");
OutputValue(sb, property.Item2.BeforeFormattedValue);
}
else
{
if (property.Item2.AfterIndex != null || property.Item2.BeforeIndex == null)
{
OutputValue(sb, property.Item2.AfterFormattedValue);
if (property.Item2.AfterIndex == null || property.Item2.BeforeIndex != null)
{
if (sb[sb.Length - 1] != '\n')
{
sb.Append(", ");
}
}
}
if (property.Item2.AfterIndex == null || property.Item2.BeforeIndex != null)
{
sb.Append("was ");
OutputValue(sb, property.Item2.BeforeFormattedValue);
}
}
if (sb[sb.Length - 1] != '\n')
{
sb.AppendLine();
}
}
}