//TODO: have controller be global, or static
private void fetchAllMDFiles(MetaDataController controller, string relativeRequestPath, string parentID)
{
string googleFolderName = "application/vnd.google-apps.folder";
int numItemsPerFetch = 1000;
//over arching list of files in this directory
IList <Google.Apis.Drive.v3.Data.File> allFiles = new List <Google.Apis.Drive.v3.Data.File>();
//Each iteration fill the files list.
IList <Google.Apis.Drive.v3.Data.File> iterationFiles;
//Execution for each iteration
FileList exec;
var googleDriveService = InitializeAPI.googleDriveService;
FilesResource.ListRequest listRequest = googleDriveService.Files.List();
string nextPageToken = null;
Boolean moreFilesExist = true;
//get all files in this directory
while (moreFilesExist)
{
listRequest = googleDriveService.Files.List();
listRequest.Fields = "nextPageToken, files";
listRequest.PageSize = numItemsPerFetch; //get 20 things each pass
listRequest.Q = "'" + parentID + "' in parents";
//get the next 10 possible folders
if (nextPageToken != null)
{
listRequest.PageToken = nextPageToken;
}
exec = listRequest.Execute();
nextPageToken = exec.NextPageToken;
iterationFiles = exec.Files;
foreach (var cur in iterationFiles)
{
if (cur.Trashed != true)
{
//not trash
allFiles.Add(cur);
}
}
if (iterationFiles.Count != numItemsPerFetch)
{
//we did not have max items, no more items to fetch
moreFilesExist = false;
}
}
//now we have all files/folders in the current directory
Google.Apis.Drive.v3.Data.File curFile;
JavaScriptSerializer serializer = new JavaScriptSerializer();
string curFileSerialized;
string cleansedName;
CommonDescriptor curCD;
while (allFiles.Count != 0) //while there are elements
{
curFile = allFiles.First(); //get first file
curFileSerialized = serializer.Serialize(curFile);
//pathForFile = controller.getAbsoluteFilePathForAddingMDFile(relativeRequestPath);
if (curFile.MimeType.Equals(googleFolderName)) //folder
{
//For each folder add the metaDataFolder, the CD, and then recurse.
cleansedName = controller.addMetaDataFolder(curFileSerialized, relativeRequestPath, curFile.Name);
curCD = googleCommParser.createCommonDescriptor(relativeRequestPath, curFileSerialized);
controller.addCommonDescriptorFile(curCD);
fetchAllMDFiles(controller, relativeRequestPath + "\\" + cleansedName, curFile.Id);
}
else //file
{
//For each file add the metadatafile, and the CD.
//cleansedName is the 'clean' name of the curFile.Name, don't need to use it cause this terminates.
cleansedName = controller.addMetaDataFile(curFileSerialized, relativeRequestPath, curFile.Name);
curCD = googleCommParser.createCommonDescriptor(relativeRequestPath, curFileSerialized);
controller.addCommonDescriptorFile(curCD);
}
allFiles.RemoveAt(0); //remove this element
}
}
