iOS DropboxSDK, get remote subdirectories and contents - objective-c

Question

I have a remote directory with several subdirectories and files in them on Dropbox.
remote side:
-Mobile Profiles *(root)*
-- Custom Profiles
--- Profile1
--- Profile2
--- Profile3
Uploading the files and directories / and subdirectories with files is not a problem. I am having a brain fart when it comes to getting the subdirectories and their contents from dropbox to the device.
put
-(void)backupCustomProfiles {
for ( NSString *file in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:MP_CUSTOM error:&error] ) {
[self.restClient uploadFile:file toPath:#"/Mobile Profiles/Custom Profiles/" fromPath:EasyStrings(MP_CUSTOM,file)];
}
}
get
-(void)restoreCustomProfiles {
for ( ) {
/* ? */
}
}
I am not sure how to iterate through the subdirectories on the remote side.

Answer 1

First load the directory metadata, then load the files that it references.
To limit the number of parallel fetches, use a NSOperationQueue for all of the loadMetadata and loadFile calls to limit the number of parallel fetches. And to avoid redundant file downloads, remember the downloaded metadata in a plist.
- (void) restoreCustomProfiles
{
[self.client loadMetadata:#"/Mobile Profiles/Custom Profiles" withHash:hash];
}
- (void) restClient:(DBRestClient*)client loadedMetadata:(DBMetadata*)metadata
{
for (DBMetadata* child in metadata.contents) {
NSString *path = [child.path lowercaseString];
if (child.isDirectory) {
[client loadMetadata:child.path withHash:hash];
} else {
[client loadFile:pathToDownload intoPath:[
self.directory stringByAppendingString:path]];
}
}
}
- (void) restClient:(DBRestClient*)client loadedFile:(NSString*)destPath
{
// successfully downloaded a file to destPath
}