/// <summary>
/// Uploads prepare.
/// 此时会把文件记录到临时表，DFS为空，reversion从file表中获取，该文件ID不代表在File中的ID
/// </summary>
/// <returns></returns>
public JsonResult UploadPrepare(UploadPrepareModel model)
{
//FileName
OauthTokenPair pair = unitOfWork.TokenReposity.GetTokenPair(model.oauth_token);
NetDiskUser user = unitOfWork.UserRepositiry.dbSet.SingleOrDefault(u => u.UserId == pair.UserId);
db.NetdiskUsers.Attach(user);
FileUncomplete fileUncomplete = new FileUncomplete
{
FileName = model.FileName.GetFileName(),
FilePath = model.FileName.GetFilePath(),
FileSize = model.FileSize,
Hash = model.Hash,
IsCompleted = false,
Owner = user
};
UploadPrepareViewModel viewmodel = new UploadPrepareViewModel();
//以该hash的的相同路径的最新版本作为当前版本
File thisVersion = db.Files.Where(f => f.FileName == fileUncomplete.FileName && f.FilePath == fileUncomplete.FilePath && f.Hash == model.Hash && !f.IsDeleted).OrderByDescending(f => f.Id).FirstOrDefault();
if (thisVersion != null)
{
viewmodel.IsExitsRemote = true;
}
else
{
viewmodel.IsExitsRemote = false;
}
if (viewmodel.IsExitsRemote)
{
viewmodel.RemoteId = thisVersion.Id;
viewmodel.RemoteHash = thisVersion.Hash;
viewmodel.RemoteReversion = thisVersion.Reversion;
}
else
{
try
{
db.FileUncomplete.Add(fileUncomplete);
db.SaveChanges();
viewmodel.ret = 0;
viewmodel.Id = fileUncomplete.Id;
viewmodel.hash = fileUncomplete.Hash;
viewmodel.DFSPath = "\\" + fileUncomplete.Hash;
}
catch (System.Exception ex)
{
viewmodel.ret = -1;
viewmodel.msg = "save file to FileUncomplete failed!err info:" + ex.Message;
}
}
return(Json(viewmodel, JsonRequestBehavior.AllowGet));
}
/// <summary>
/// Uploads complete.
/// 把临时记录删除，并记录到File表
/// 如果有冲突，即该版本号已经存在，则返回冲突消息
/// 同时发布更新消息（更新消息发布到以该用户UserId为channelId的channel上），所有以该帐号登录的客户端都要订阅该Channel
/// 客户端收到该请求的返回之后应该更新本地的文件ID与版本号
/// </summary>
/// <returns></returns>
public JsonResult UploadComplete(UploadCompleteModel model)
{
OauthTokenPair pair = unitOfWork.TokenReposity.GetTokenPair(model.oauth_token);
NetDiskUser user = unitOfWork.UserRepositiry.dbSet.SingleOrDefault(u => u.UserId == pair.UserId);
db.NetdiskUsers.Attach(user);
FileUncomplete fileUncomplete = db.FileUncomplete.SingleOrDefault(f => f.Id == model.Id);
uploadCompleteViewModel viewModel = new uploadCompleteViewModel();
if (fileUncomplete == null)
{
viewModel.ret = -1;
viewModel.msg = "unComplete recorde is miss";
}
File file = new File
{
CreateTime = DateTime.Now,
DFSPath = '\\' + fileUncomplete.Hash,
Hash = fileUncomplete.Hash,
FileName = fileUncomplete.FileName,
FilePath = fileUncomplete.FilePath,
FileSize = fileUncomplete.FileSize,
FileType = 1,
IsDeleted = false,
LastModifyTime = DateTime.Now,
Owner = user,
Reversion = 0
};
if (db.Files.Count(a => a.FilePath == file.FilePath && a.FileName == file.FileName && !a.IsDeleted) > 0)
{
//已经有文件，返回冲突消息
file.FileName = file.FileName + "_conflict_copy";
viewModel.Conflicted = true;
viewModel.NewFilename = file.FilePath + file.FileName;
}
else
{
viewModel.Conflicted = false;
try
{
File last = db.Files.Where(f => f.FilePath == file.FilePath && f.FileName == file.FileName).OrderByDescending(f => f.Reversion).FirstOrDefault();
if (last != null)
{
file.Reversion = last.Reversion + 1;
}
else
{
file.Reversion = 0;
}
db.Files.Add(file);
db.SaveChanges();
viewModel.Id = file.Id;
viewModel.ret = 0;
viewModel.NewFilename = file.FilePath + file.FileName;
viewModel.Reversion = file.Reversion;
db.FileUncomplete.Remove(fileUncomplete);
db.SaveChanges();
}
catch (System.Exception ex)
{
viewModel.ret = -1;
viewModel.msg = "save db failed,err info:" + ex.Message;
}
}
return(Json(viewModel, JsonRequestBehavior.AllowGet));
}
/// <summary>
/// 记录修改数据到fileuncomplete表
/// 返回文件id等，客户端收到之后应该完整上传
/// </summary>
/// <returns></returns>
public JsonResult ModifyPrepare(ModifyPrepareModel model)
{
//根据客户端提供的路径查找最新版，看版本Id是否过期，如果过期则返回过期，客户端提示版本冲突，创建新文件重新提交
OauthTokenPair pair = unitOfWork.TokenReposity.GetTokenPair(model.oauth_token);
NetDiskUser user = unitOfWork.UserRepositiry.dbSet.SingleOrDefault(u => u.UserId == pair.UserId);
ModifyPrepareViewModel viewModel = new ModifyPrepareViewModel();
if (user == null)
{
viewModel.ret = -1;
viewModel.msg = "cannot find the user in cache, relogin may help";
return(Json(viewModel, JsonRequestBehavior.AllowGet));
}
db.NetdiskUsers.Attach(user);
FileUncomplete fileUncomplete = new FileUncomplete
{
FileName = model.LocalPath.GetFileName(),
FilePath = model.LocalPath.GetFilePath(),
FileSize = model.NewFileSize,
Hash = model.NewHash,
IsCompleted = false,
Owner = user
};
File lastversion = db.Files.Where(f => f.FileName == fileUncomplete.FileName && f.FilePath == fileUncomplete.FilePath).OrderByDescending(f => f.Id).FirstOrDefault();
if (lastversion == null)
{
viewModel.ret = -1;
viewModel.msg = "can not find the file specified";
return(Json(viewModel, JsonRequestBehavior.AllowGet));
}
else
{
if (model.LocalId < lastversion.Id) //过期
{
viewModel.IsOutOfData = true;
}
else if (model.LocalId == lastversion.Id && lastversion.IsDeleted) //过期，最后一个版本已经被删除
{
viewModel.IsOutOfData = true;
viewModel.IsDeleted = true;
}
else
{
viewModel.IsOutOfData = false;
viewModel.IsDeleted = false;
try
{
fileUncomplete.Reversion = lastversion.Reversion + 1;
db.FileUncomplete.Add(fileUncomplete);
db.SaveChanges();
viewModel.ret = 0;
viewModel.Id = fileUncomplete.Id;
viewModel.DFSPath = "\\" + fileUncomplete.Hash;
}
catch (System.Exception ex)
{
viewModel.ret = -1;
viewModel.msg = "save file to FileUncomplete failed!err info:" + ex.Message;
}
}
}
return(Json(viewModel, JsonRequestBehavior.AllowGet));
}
