public static async Task <IpfsFileListing> GetFileListingAsync()
{
if (_FileListing == null)
{
_FileListing = await IpfsFileListing.Load();
}
return(_FileListing);
}
public static async Task <IpfsFileListing> Load()
{
IpfsFileListing returnValue = new IpfsFileListing();
try
{
//Load the file listing if we have one locally
if (File.Exists(ListingFilename))
{
using (StreamReader reader = new StreamReader(File.OpenRead(ListingFilename)))
{
string json = reader.ReadToEnd();
returnValue = JsonConvert.DeserializeObject <IpfsFileListing>(json);
}
}
string localPeerId = IpfsApiWrapper.GetPeerId();
//Validate that the local file matches the remote file
/*{
* string listingFileHash = await IpfsApiWrapper.ResolveAsync(localPeerId);
* IpfsFileListing remoteFileListing = await FetchListingFile(listingFileHash, false);
* if (remoteFileListing != returnValue)
* {
* returnValue.Dirty = true;
* }
* }*/
PeerListing peerListing = await IpfsApiWrapper.GetPeerListingAsync();
foreach (string peer in peerListing.Peers)
{
IpfsFileListing peerFileListing = null;
if (peer != localPeerId)
{
string listingFileHash = await IpfsApiWrapper.ResolveAsync(peer);
peerFileListing = await FetchListingFile(listingFileHash, false);
}
else if (File.Exists(ListingFilename))
{
string listingFileHash = await IpfsApiWrapper.ResolveAsync();
peerFileListing = await FetchListingFile(listingFileHash, true);
}
returnValue.MergeFile(peerFileListing);
}
}
catch
{
}
await returnValue.Sync();
return(returnValue);
}
private void MergeFile(IpfsFileListing other)
{
foreach (IpfsFile file in other._Files)
{
string mfLocalFilename = file.LocalFilename;
if (!_Files.Any(o => o.LocalFilename == mfLocalFilename))
{
Dirty = true;
_Files.Add(file);
}
else
{
ResolveConflict(file);
}
}
}
private static async Task <IpfsFileListing> FetchListingFile(string listingFileHash, bool keep = false)
{
IpfsFileListing returnValue = null;
try
{
string localListingFilename = keep ? ListingFilename : Path.GetTempFileName();
if (!string.IsNullOrEmpty(listingFileHash) && await IpfsApiWrapper.Get(listingFileHash, localListingFilename))
{
using (StreamReader reader = new StreamReader(File.OpenRead(localListingFilename)))
{
string json = reader.ReadToEnd();
returnValue = JsonConvert.DeserializeObject <IpfsFileListing>(json);
}
}
}
catch
{
//In case the peer's file hasn't yet been published to ipns
}
returnValue.Dirty = false;
return(returnValue);
}
