/// <summary>
/// Syncs a document with the server.
/// </summary>
/// <param name="editorId">The id of the user who's submitting his work</param>
/// <param name="documentId">The id of the document</param>
/// <param name="filepath">The path to where the file lies on the client</param>
/// <param name="fileContent">The xaml content of the document the user is syncing</param>
/// <param name="title">The title of the document</param>
/// <param name="pureContent">The "pure" content of the document. One line per index in the array</param>
/// <returns>Null if there's no mergeconflict.
/// If there is a mergeconflict the returned is like this:
/// Array[0] = the merged document
/// Array[1] = insertions, same length as Array[0]
/// Array[2] = deletions, same length as Array[3]
/// Array[3] = the original document (server version)</returns>
public String[][] SyncDocument(int editorId, int documentId, String filepath, String fileContent, String title, String pureContent)
{
String[] latestAsArray = pureContent.Split(new String[] { "\r\n", "\n" }, StringSplitOptions.None);
PersistentStorage ps = PersistentStorage.GetInstance();
//Document found with the given id
if (GetDocumentById(documentId) != null)
{
//Check if the document has any revisions
bool hasRevisions = ps.DocumentHasRevision(documentId);
if (!hasRevisions)
{
//No conflict
return(ps.SyncNoConflict(editorId, documentId, filepath, fileContent));
}
//Get the latest documentrevision by the user
Documentrevision latestUserDocumentRevision = ps.GetLatestDocumentRevisionByUserId(editorId, documentId);
//Get the latest documentrevision on the server
Documentrevision latestServerDocumentRevision = ps.GetLatestDocumentRevisions(documentId)[0];
//Get the content of the latest documentrevision by the user
String latestUserDocumentContent = ps.GetDocumentRevisionContent(latestUserDocumentRevision);
//Get the content of the latest documentrevision on the server
String latestServerDocumentContent = ps.GetDocumentRevisionContent(latestServerDocumentRevision);
//Check if the two contents are equal. If they are equal, there's no conflict
if (latestUserDocumentContent == latestServerDocumentContent)
{
//No conflict
return(ps.SyncNoConflict(editorId, documentId, filepath, fileContent));
}
else
{
//Conflict
return(Model.GetInstance().SyncConflict(documentId, latestAsArray));
}
}
else
{
//No document found with the given id.
ps.AddDocumentWithUserDocument(title, editorId, filepath, fileContent);
return(null);
}
}