/// <summary>
/// Carica un file su OneDrive
/// </summary>
/// <param name="FileName">Nome del file da caricare</param>
/// <param name="DestFileName">Nome del file su OneDrive</param>
/// <returns>Restituisce true se l'operazione va a buon fine, false altrimenti.</returns>
public async Task <bool> UploadFile(string FileName, string DestFileName)
{
if (!await CheckToken())
{
Debug.WriteLine("User is not logged in");
return(false);
}
HttpClient AppClient = new HttpClient();
try
{
AppClient.DefaultRequestHeaders.Clear();
AppClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", Account.AccessToken);
// Controlla se il file esiste già
CloudFileInfo FileInfo = null;
bool UpdateFile = false;
if (await FileExists(DestFileName) == CloudFileStatus.FileFound)
{
UpdateFile = true;
FileInfo = await GetFileInfo(DestFileName);
if (FileInfo == null)
{
throw new Exception(string.Format("Unable to find info about the file {0}. Uploaded failed", DestFileName));
}
}
// Due modalità diverse a seconda delle dimensioni del file
FileInfo fileInfo = new FileInfo(FileName);
if (fileInfo.Length > 4 * 1024 * 1240)
{
// Oltre i 4MB devo creare una sessione di caricamento
// Stesso url anche per l'aggiornamento.
string Url = URLBase + "/me/drive/special/approot:/" + DestFileName + ":/createUploadSession";
// Gestione dei conflitti
JObject JsonObj = new JObject();
JObject JsonConflictBehavior = new JObject
{
{ "@microsoft.graph.conflictBehavior", new JValue("rename") }
};
JsonObj["item"] = JsonConflictBehavior;
StringContent Content = new StringContent(JsonObj.ToString(), System.Text.Encoding.UTF8, "application/json");
HttpResponseMessage Response = await AppClient.PostAsync(new Uri(Url), Content);
if (!Response.IsSuccessStatusCode)
{
throw new Exception(string.Format("File {0} not uploaded. Status code: {1}", FileName, Response.StatusCode));
}
// Leggo l'url per l'upload del file
string UpdUrl = "";
JObject JsonObjResponse = JObject.Parse(await Response.Content.ReadAsStringAsync());
if (JsonObjResponse != null)
{
UpdUrl = JsonObjResponse["uploadUrl"].ToString();
}
if (UpdUrl.Length == 0)
{
throw new Exception(string.Format("File {0} not uploaded. Error: uploade session not created", FileName));
}
// Upload
FileStream Stream = new FileStream(FileName, FileMode.Open);
StreamContent ContentUpload = new StreamContent(Stream);
try
{
ContentUpload.Headers.ContentRange = new System.Net.Http.Headers.ContentRangeHeaderValue(0, Stream.Length - 1, Stream.Length);
HttpResponseMessage ResponseUpload = await AppClient.PutAsync(new Uri(UpdUrl), ContentUpload);
if (!ResponseUpload.IsSuccessStatusCode)
{
throw new Exception(string.Format("File {0} not uploaded. Status code: {1}", FileName, Response.StatusCode));
}
// Leggo il nome del file e, se diverso da pwdcloud.list, lo rinomino
JObject JsonRename = JObject.Parse(await ResponseUpload.Content.ReadAsStringAsync());
if (JsonRename != null)
{
string NewName = JsonRename["name"].ToString();
string pwdfileNameInCloud = App.PwdManager.PwdFileNameInCloud;
if (NewName != "" && NewName.CompareTo(pwdfileNameInCloud) != 0)
{
// Copia di backup
string CopyName = "pwdcloud_" + DateTime.Now.ToString("ddMMyyyy_Hmmssfff") + ".list.bck";
try
{
await CopyFile(pwdfileNameInCloud, CopyName);
await DeleteFile(pwdfileNameInCloud);
try
{
await RenameFile(NewName, pwdfileNameInCloud);
}
catch (Exception)
{
await RenameFile(CopyName, pwdfileNameInCloud);
throw;
}
}
catch (Exception e)
{
throw new Exception(string.Format("File {0} not uploaded. Error: unable to deal with the name conflict. {1}", FileName, e.Message));
}
finally
{
// Elimina la copia di backup
await DeleteFile(CopyName);
}
}
}
}
finally
{
ContentUpload.Dispose();
Stream.Dispose();
}
}
else
{
// Caricamento diretto
string Url = URLBase + "/me/drive/special/approot:/" + DestFileName + ":/content";
if (UpdateFile)
{
Url = URLBase + "/me/drive/items/" + FileInfo.ID + "/content";
}
FileStream Stream = new FileStream(FileName, FileMode.Open);
StreamContent Content = new StreamContent(Stream);
try
{
HttpResponseMessage Response = await AppClient.PutAsync(new Uri(Url), Content);
if (!Response.IsSuccessStatusCode)
{
throw new Exception(string.Format("File {0} not uploaded. Status code: {1}", FileName, Response.StatusCode));
}
}
finally
{
Content.Dispose();
Stream.Dispose();
}
}
return(true);
}
catch (FileNotFoundException e)
{
// File sorgente non trovato
Debug.WriteLine(AppResources.errCloudUpload + " file not found. Error: " + e.Message);
return(false);
}
catch (Exception e)
{
Debug.WriteLine(AppResources.errCloudUpload + " " + e.Message);
return(false);
}
finally
{
AppClient.Dispose();
}
}
/// <summary>
/// Restituisce le informazioni su un file su OneDrive.
/// </summary>
/// <param name="FileName">Nome del file</param>
/// <returns>Restituisce le informazioni sul file o null se l'operazione fallisce
/// o il file non viene trovato</returns>
private async Task <CloudFileInfo> GetFileInfo(string FileName)
{
CloudFileInfo FileInfo = null;
LastError = "";
const string UrlRoot = URLBase + "/me/drive/special/approot/";
if (!await CheckToken())
{
LastError = "User is not logged in!";
Debug.WriteLine(LastError);
return(null);
}
// Ottiene la lista dei file nella cartella dedicata all'App
HttpClient appClient = new HttpClient();
try
{
string Url = UrlRoot + "children";
if (string.Compare(Path.GetFileName(FileName), FileName) != 0)
{
string[] tokens = FileName.Split(new[] { Path.DirectorySeparatorChar });
if (tokens.Length > 1)
{
Url = URLBase + "/me/drive/special/approot:";
for (int i = 0; i < tokens.Length - 1; i++)
{
if (tokens[i].Length > 0)
{
Url += "/" + tokens[i];
}
}
Url += ":/children/";
FileName = tokens[tokens.Length - 1];
}
}
appClient.DefaultRequestHeaders.Clear();
appClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", Account.AccessToken);
HttpResponseMessage Response = await appClient.GetAsync(new Uri(Url));
if (!Response.IsSuccessStatusCode)
{
appClient.Dispose();
LastError = "Unable to find the file " + FileName + ". Status code: " + Response.StatusCode;
Debug.WriteLine(LastError);
return(null);
}
// Cerca nel JSON di risposta il file
JObject JsonObj = JObject.Parse(await Response.Content.ReadAsStringAsync());
if (JsonObj != null)
{
JArray DriveItems = JArray.Parse(JsonObj["value"].ToString());
if (DriveItems != null)
{
foreach (JObject JsonDriveItem in DriveItems)
{
if (JsonDriveItem != null)
{
if (JsonDriveItem["name"].ToString().CompareTo(FileName) == 0)
{
// Trovato!
FileInfo = new CloudFileInfo
{
DownloadUrl = JsonDriveItem["@microsoft.graph.downloadUrl"].ToString(),
CreatedDateTime = JsonDriveItem["createdDateTime"].ToObject <DateTime>(dateTimeSerializer),
ID = JsonDriveItem["id"].ToString(),
LastModifiedDateTime = JsonDriveItem["lastModifiedDateTime"].ToObject <DateTime>(dateTimeSerializer),
Name = JsonDriveItem["name"].ToString(),
Size = long.Parse(JsonDriveItem["size"].ToString()),
WebUrl = JsonDriveItem["webUrl"].ToString()
};
break;
}
}
}
}
}
else
{
appClient.Dispose();
LastError = "Unable to find the file " + FileName + ". Malformed response";
Debug.WriteLine(LastError);
return(null);
}
}
catch (Exception Ex)
{
appClient.Dispose();
LastError = "Unable to find the file " + FileName + ": " + Ex.Message;
Debug.WriteLine(LastError);
return(null);
}
appClient.Dispose();
return(FileInfo);
}