//Create a new file node in the xml document
private static void CreateFile(XMLWriteFileObject xmlWriteObj)
{
XmlDocument xmlDoc = new XmlDocument();
string xmlFilePath = Path.Combine(xmlWriteObj.Parent, CommonXMLConstants.MetadataPath);
CommonMethods.CreateFileIfNotExist(xmlWriteObj.Parent);
CommonMethods.LoadXML(ref xmlDoc, xmlFilePath);
CommonMethods.DoFileCleanUp(xmlDoc, xmlWriteObj.Name);
XmlText nameText = xmlDoc.CreateTextNode(xmlWriteObj.Name);
XmlText hashText = xmlDoc.CreateTextNode(xmlWriteObj.Hash);
XmlText sizeText = xmlDoc.CreateTextNode(xmlWriteObj.Size.ToString());
XmlText createdTimeText = xmlDoc.CreateTextNode(xmlWriteObj.CreationTimeUtc.ToString());
XmlText lastModifiedText = xmlDoc.CreateTextNode(xmlWriteObj.LastModifiedUtc.ToString());
XmlText lastUpdatedText = xmlDoc.CreateTextNode(xmlWriteObj.MetaUpdatedUtc.ToString());
XmlElement nameElement = xmlDoc.CreateElement(CommonXMLConstants.NodeName);
XmlElement hashElement = xmlDoc.CreateElement(CommonXMLConstants.NodeHash);
XmlElement sizeElement = xmlDoc.CreateElement(CommonXMLConstants.NodeSize);
XmlElement createdTimeElement = xmlDoc.CreateElement(CommonXMLConstants.NodeLastCreatedUtc);
XmlElement lastModifiedElement = xmlDoc.CreateElement(CommonXMLConstants.NodeLastModifiedUtc);
XmlElement lastUpdatedElement = xmlDoc.CreateElement(CommonXMLConstants.NodeLastUpdatedUtc);
XmlElement fileElement = xmlDoc.CreateElement(CommonXMLConstants.NodeFile);
nameElement.AppendChild(nameText);
hashElement.AppendChild(hashText);
sizeElement.AppendChild(sizeText);
createdTimeElement.AppendChild(createdTimeText);
lastModifiedElement.AppendChild(lastModifiedText);
lastUpdatedElement.AppendChild(lastUpdatedText);
fileElement.AppendChild(nameElement);
fileElement.AppendChild(sizeElement);
fileElement.AppendChild(hashElement);
fileElement.AppendChild(lastModifiedElement);
fileElement.AppendChild(createdTimeElement);
fileElement.AppendChild(lastUpdatedElement);
XmlNode rootNode = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr);
if(rootNode == null)
return;
rootNode.AppendChild(fileElement);
CommonMethods.SaveXML(ref xmlDoc, xmlFilePath);
DeleteFileLastKnownState(xmlWriteObj);
}
//Deletes a file node in the last known state file by searching for the name
private static void DeleteFileLastKnownState(XMLWriteFileObject xmlWriteObj)
{
string todoXmlPath = Path.Combine(xmlWriteObj.Parent, CommonXMLConstants.LastKnownStatePath);
if (!File.Exists(todoXmlPath))
return;
XmlDocument todoXmlDoc = new XmlDocument();
CommonMethods.LoadXML(ref todoXmlDoc, todoXmlPath);
XmlNode fileNode = todoXmlDoc.SelectSingleNode(CommonXMLConstants.XPathLastKnownState + CommonXMLConstants.XPathFile + "[name=" + CommonMethods.ParseXPathString(xmlWriteObj.Name) + "]");
if (fileNode != null)
fileNode.ParentNode.RemoveChild(fileNode);
CommonMethods.SaveXML(ref todoXmlDoc, todoXmlPath);
}
// Called by method GenerateFileLastKnownState to access the xml document and add a new file node in the last
// known state file
private static void AppendActionFileLastKnownState(XmlDocument xmlDoc, XMLWriteFileObject xmlWriteObj, string changeType, XmlNode node)
{
string hash = string.Empty;
string lastModified = string.Empty;
XmlNodeList nodeList = node.ChildNodes;
for (int i = 0; i < nodeList.Count; i++)
{
XmlNode childNode = nodeList[i];
switch (childNode.Name)
{
case CommonXMLConstants.NodeHash:
hash = childNode.InnerText;
break;
case CommonXMLConstants.NodeLastModifiedUtc:
lastModified = childNode.InnerText;
break;
}
}
XmlText hashText = xmlDoc.CreateTextNode(hash);
XmlText actionText = xmlDoc.CreateTextNode(changeType);
XmlText lastModifiedText = xmlDoc.CreateTextNode(lastModified);
XmlText nameText = xmlDoc.CreateTextNode(xmlWriteObj.Name);
XmlText lastUpdatedText = xmlDoc.CreateTextNode(xmlWriteObj.MetaUpdatedUtc.ToString());
XmlElement fileElement = xmlDoc.CreateElement(CommonXMLConstants.NodeFile);
XmlElement nameElement = xmlDoc.CreateElement(CommonXMLConstants.NodeName);
XmlElement hashElement = xmlDoc.CreateElement(CommonXMLConstants.NodeHash);
XmlElement actionElement = xmlDoc.CreateElement(CommonXMLConstants.NodeAction);
XmlElement lastModifiedElement = xmlDoc.CreateElement(CommonXMLConstants.NodeLastModifiedUtc);
XmlElement lastUpdatedElement = xmlDoc.CreateElement(CommonXMLConstants.NodeLastUpdatedUtc);
hashElement.AppendChild(hashText);
actionElement.AppendChild(actionText);
lastModifiedElement.AppendChild(lastModifiedText);
lastUpdatedElement.AppendChild(lastUpdatedText);
nameElement.AppendChild(nameText);
fileElement.AppendChild(nameElement);
fileElement.AppendChild(actionElement);
fileElement.AppendChild(hashElement);
fileElement.AppendChild(lastModifiedElement);
fileElement.AppendChild(lastUpdatedElement);
XmlNode rootNode = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathLastKnownState);
if(rootNode == null)
return;
rootNode.AppendChild(fileElement);
}
// Generates a new file node in the last known state file based on the XMLWriteFileObject and deleted node
private static void GenerateFileLastKnownState(XMLWriteFileObject xmlWriteObj, XmlNode deletedNode)
{
if (deletedNode == null)
return;
string fullPath = xmlWriteObj.Parent;
XmlDocument xmlTodoDoc = new XmlDocument();
string todoPath = Path.Combine(fullPath, CommonXMLConstants.LastKnownStatePath);
CommonMethods.CreateLastKnownStateFile(fullPath);
CommonMethods.LoadXML(ref xmlTodoDoc, todoPath);
CommonMethods.DoFileLastKnownCleanUp(xmlTodoDoc, xmlWriteObj.Name);
AppendActionFileLastKnownState(xmlTodoDoc, xmlWriteObj, CommonXMLConstants.ActionDeleted, deletedNode);
CommonMethods.SaveXML(ref xmlTodoDoc, todoPath);
}
// Delete the file node in the xml document
private static void DeleteFile(XMLWriteFileObject xmlWriteObj)
{
XmlDocument xmlDoc = new XmlDocument();
XmlNode tempNode = null;
string xmlFilePath = Path.Combine(xmlWriteObj.Parent, CommonXMLConstants.MetadataPath);
if (File.Exists(xmlFilePath))
{
CommonMethods.LoadXML(ref xmlDoc, xmlFilePath);
XmlNode node = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + CommonXMLConstants.XPathFile + "[name=" + CommonMethods.ParseXPathString(xmlWriteObj.Name) + "]");
if (node == null)
return;
tempNode = node.Clone();
node.ParentNode.RemoveChild(node);
CommonMethods.SaveXML(ref xmlDoc, xmlFilePath);
}
GenerateFileLastKnownState(xmlWriteObj, tempNode);
}
//Rename the existing file node in the xml document
private static void RenameFile(XMLWriteFileObject xmlWriteObj)
{
XmlDocument xmlDoc = new XmlDocument();
XmlNode tempNode = null;
string xmlFilePath = Path.Combine(xmlWriteObj.Parent, CommonXMLConstants.MetadataPath);
CommonMethods.CreateFileIfNotExist(xmlWriteObj.Parent);
CommonMethods.LoadXML(ref xmlDoc, xmlFilePath);
XmlNode node = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + CommonXMLConstants.XPathFile + "[name=" + CommonMethods.ParseXPathString(xmlWriteObj.Name) + "]");
// if the node does not exist, then create the node
if (node == null)
{
CommonMethods.SaveXML(ref xmlDoc, xmlFilePath);
CreateFile(xmlWriteObj);
return;
}
tempNode = node.Clone();
node.FirstChild.InnerText = xmlWriteObj.NewName;
node.LastChild.InnerText = xmlWriteObj.MetaUpdatedUtc.ToString();
CommonMethods.SaveXML(ref xmlDoc, xmlFilePath);
GenerateFileLastKnownState(xmlWriteObj, tempNode);
}
//Update the existing file node in the xml document
private static void UpdateFile(XMLWriteFileObject xmlWriteObj)
{
XmlDocument xmlDoc = new XmlDocument();
string xmlFilePath = Path.Combine(xmlWriteObj.Parent, CommonXMLConstants.MetadataPath);
CommonMethods.CreateFileIfNotExist(xmlWriteObj.Parent);
CommonMethods.LoadXML(ref xmlDoc, xmlFilePath);
XmlNode node = xmlDoc.SelectSingleNode(CommonXMLConstants.XPathExpr + CommonXMLConstants.XPathFile + "[name=" + CommonMethods.ParseXPathString(xmlWriteObj.Name) + "]");
// if the node does not exist , then create the node
if (node == null)
{
CommonMethods.SaveXML(ref xmlDoc, xmlFilePath);
CreateFile(xmlWriteObj);
return;
}
XmlNodeList childNodeList = node.ChildNodes;
for (int i = 0; i < childNodeList.Count; i++)
{
XmlNode nodes = childNodeList[i];
switch (nodes.Name)
{
case CommonXMLConstants.NodeSize:
nodes.InnerText = xmlWriteObj.Size.ToString();
break;
case CommonXMLConstants.NodeHash:
nodes.InnerText = xmlWriteObj.Hash;
break;
case CommonXMLConstants.NodeName:
nodes.InnerText = xmlWriteObj.Name;
break;
case CommonXMLConstants.NodeLastModifiedUtc:
nodes.InnerText = xmlWriteObj.LastModifiedUtc.ToString();
break;
case CommonXMLConstants.NodeLastCreatedUtc:
nodes.InnerText = xmlWriteObj.CreationTimeUtc.ToString();
break;
case CommonXMLConstants.NodeLastUpdatedUtc:
nodes.InnerText = xmlWriteObj.MetaUpdatedUtc.ToString();
break;
}
}
CommonMethods.SaveXML(ref xmlDoc, xmlFilePath);
DeleteFileLastKnownState(xmlWriteObj);
}