public object GetSnapshot(SnapshotId snapshotId)
{
if (!File.Exists(snapshotId.FilePath))
{
return(null);
}
var fullSnapshot = JObjectHelper.ParseFromString(File.ReadAllText(snapshotId.FilePath));
if (snapshotId.PrimaryId == null && snapshotId.SecondaryId == null)
{
return(fullSnapshot);
}
if (snapshotId.PrimaryId != null &&
fullSnapshot.TryGetValue(snapshotId.PrimaryId, out var partialSnapshot))
{
if (snapshotId.SecondaryId != null &&
partialSnapshot is JObject partialSnapshotJObject &&
partialSnapshotJObject.TryGetValue(snapshotId.SecondaryId, out partialSnapshot))
{
return(partialSnapshot);
}
return(partialSnapshot);
}
return(null);
}
public object SanitiseSnapshot(object snapshot)
{
try
{
if (snapshot is string stringSnapshot)
{
if (StringIsJsonObject(stringSnapshot))
{
try
{
return(JObjectHelper.ParseFromString(stringSnapshot));
}
catch (Exception e)
{
throw new MalformedJsonSnapshotException(e);
}
}
}
JObjectHelper.FromObject(snapshot);
return(snapshot);
}
catch (ArgumentException)
{
return(new { AutoGenerated = snapshot });
}
}
public bool CompareSnapshots(object oldSnap, object newSnap)
{
var old = JObjectHelper.FromObject(oldSnap);
var @new = JObjectHelper.FromObject(newSnap);
@new = JObjectHelper.ParseFromString(@new.ToString());
return(JToken.DeepEquals(old, @new));
}
public static string GetDiffMessage(object currentSnapshot, object newSnapshot)
{
var currentSnapshotJObject = JObjectHelper.FromObject(currentSnapshot);
var newSnapshotJObject = JObjectHelper.FromObject(newSnapshot);
var dmp = new diff_match_patch();
var a = dmp.diff_linesToChars(currentSnapshotJObject.ToString(), newSnapshotJObject.ToString());
var lineText1 = (string)a[0];
var lineText2 = (string)a[1];
var lineArray = (List <string>)a[2];
var diffs = dmp.diff_main(lineText1, lineText2, false);
dmp.diff_charsToLines(diffs, lineArray);
dmp.diff_cleanupEfficiency(diffs);
var builder = new StringBuilder(Environment.NewLine);
builder.AppendLine("Snapshots do not match");
builder.AppendLine(RemovedLegendString);
builder.AppendLine(AddedLegendString);
builder.AppendLine(Environment.NewLine);
for (var i = 0; i < diffs.Count; i++)
{
var diff = diffs[i];
var lines = GetLines(diff.text);
switch (diff.operation)
{
case Operation.DELETE:
lines.ForEach(l => builder.AppendLine($"- {l}"));
break;
case Operation.INSERT:
lines.ForEach(l => builder.AppendLine($"+ {l}"));
break;
case Operation.EQUAL:
GetEqualLines(lines, i == 0, i == diffs.Count - 1).ForEach(l => builder.AppendLine(l));
break;
}
}
return(builder.ToString());
}
public void StoreSnapshot(SnapshotId snapshotId, object value)
{
Directory.CreateDirectory(Path.GetDirectoryName(snapshotId.FilePath));
var newSnapshot = JObjectHelper.FromObject(value);
JToken newSnapshotToWrite;
if (snapshotId.PrimaryId == null && snapshotId.SecondaryId == null)
{
newSnapshotToWrite = newSnapshot;
}
else
{
var rawSnapshotContent = GetRawSnapshotContent(snapshotId.FilePath);
newSnapshotToWrite = rawSnapshotContent == null
? new JObject()
: JObject.Parse(rawSnapshotContent);
if (snapshotId.PrimaryId != null && snapshotId.SecondaryId == null)
{
newSnapshotToWrite[snapshotId.PrimaryId] = newSnapshot;
}
else if (snapshotId.PrimaryId != null && snapshotId.SecondaryId != null)
{
var firstLevel = newSnapshotToWrite[snapshotId.PrimaryId];
if (firstLevel == null)
{
newSnapshotToWrite[snapshotId.PrimaryId] = new JObject();
}
newSnapshotToWrite[snapshotId.PrimaryId][snapshotId.SecondaryId] = newSnapshot;
}
}
File.WriteAllText(snapshotId.FilePath, newSnapshotToWrite.ToString());
}
