syntax = "proto3";

option csharp_namespace = "WinUINotes.Grpc";

package filetransfer;

service FileTransfer {
  rpc InitUpload (InitUploadRequest) returns (InitUploadResponse);
  rpc UploadChunk (stream UploadChunkRequest) returns (UploadChunkResponse);
  rpc CompleteUpload (CompleteUploadRequest) returns (CompleteUploadResponse);
  rpc CheckUploadStatus (CheckUploadStatusRequest) returns (CheckUploadStatusResponse);
}

message InitUploadRequest {
  string file_name = 1;
  int64 file_size = 2;
  string file_hash = 3;
}

message InitUploadResponse {
  string session_id = 1;
  int64 uploaded_bytes = 2;
}

message UploadChunkRequest {
  string session_id = 1;
  bytes chunk_data = 2;
  int64 offset = 3;
}

message UploadChunkResponse {
  int64 uploaded_bytes = 1;
}

message CompleteUploadRequest {
  string session_id = 1;
  string file_hash = 2;
}

message CompleteUploadResponse {
  bool success = 1;
  string message = 2;
}

message CheckUploadStatusRequest {
  string file_name = 1;
  string file_hash = 2;
}

message CheckUploadStatusResponse {
  string session_id = 1;
  int64 uploaded_bytes = 2;
  bool exists = 3;
}