/// <summary>
/// Recover the files from the list of string: filename and CIDs: download, merge and decrypt
/// </summary>
/// <param name="cidArray"></param>
public async void RecoverFilesMergeDecrypt(List <string> cidArray)
{
//We connect
var ipfs = new IpfsClient(ipfsServer);
if (cidArray.Count >= 0)
{
// First need to get the right folder. For ease of test, the part of the file are downloaded
// on a folder filename-extension, i.e. test.txt to blockget/test-txt
string fileName = Path.GetFileNameWithoutExtension(cidArray[0]);
string extensionPt = Path.GetExtension(cidArray[0]);
//string extension = extensionPt.Skip(1).ToArray();
string extension = extensionPt.Remove(0, 1);
//string inputFolder = Globals.BLOCKGET_FILE_FOLDER + fileName + "-" + extension + "\\";
string inputFolder = Globals.OPERATION_FOLDER + fileName + "-" + extension + "\\";
string[] SplittedFilesArray = new string[Globals.SPLIT_NB];
string baseFileName = Path.GetFileNameWithoutExtension(cidArray[0]);
int i = 0;
//Create input forlder for download and merge
Directory.CreateDirectory(inputFolder);
foreach (string s in cidArray.Skip(1)) // We want to skip the first (contre intuitive, not 0)
{
try
{
//SplittedFilesArray[i] = inputFolder + baseFileName + "." +
// i.ToString().PadLeft(5, Convert.ToChar("0")) + extensionPt + ".tmp";
SplittedFilesArray[i] = inputFolder + baseFileName + extensionPt + ".aes." +
i.ToString().PadLeft(5, Convert.ToChar("0")) + ".tmp";
//We download bytes => File
Stream result = await ipfs.FileSystem.ReadFileAsync(s);
//We want to save them in the SaveFolder + cidArray folder
//Could also try: Stream result = await ipfs.FileSystem.ReadFileAsync(s).Result;
using (FileStream DestinationStream = File.Create(SplittedFilesArray[i])) //TODO ERROR: System.IO.DirectoryNotFoundException: 'Could not find a part of the path 'C:\Blockget\ifmalesuperfherodresedlikewomen-jpg\ifmalesuperfherodresedlikewomen.jpg.aes.00000.tmp'.'
{
await result.CopyToAsync(DestinationStream);
}
i++;
} //System.Net.Http.HttpRequestException: 'invalid path "": path does not begin with '/''
catch (HttpRequestException e)
{
Console.WriteLine(e.Message);
Console.WriteLine("FAIL! Don't forget to run IPFS on your computer");
break;
}
}
// We merge
string pathEncryptedFile = Split.MergeFile(inputFolder);
//We decrypt
//string pathEncryptedFile = inputFolder + fileName + ".aes"; //Globals.BLOCKGET_FILE_FOLDER + "\\" + cidArray[0];
//string pathEncryptedFile = inputFolder + baseFileName + extensionPt + ".aes";
string outputPath = Encryption.DecryptFile(pathEncryptedFile);
// Test if the file downloaded is the same as the one already present
if (File.Exists(cidArray[0]) && Filesys.compare2FilesByBlocks(outputPath, cidArray[0]))
{
Console.WriteLine("{0} and {1} have been compared bit by bit and are the same", outputPath, cidArray[0]);
}
else
{
Console.WriteLine("{0} and {1} have been compared bit by bit and are different, we download and store the file in the Blockget Folder", outputPath, cidArray[0]);
// Could use the Path.Combine method to safely append the file name to the path.
// Will overwrite if the destination file already exists.
File.Copy(outputPath, cidArray[0], true);
}
//We delete folder and file downloaded
File.Delete(outputPath);
Directory.Delete(inputFolder);
}
else
{
Console.WriteLine("Problem this entry is empty");
}
}