// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.

syntax = "proto3";
option go_package = "pb";

package orders;

import "gogo.proto";
import "google/protobuf/timestamp.proto";

// PieceAction is an enumeration of all possible executed actions on storage node
enum PieceAction {
    INVALID = 0;
    PUT = 1;
    GET = 2;
    GET_AUDIT = 3;
    GET_REPAIR = 4;
    PUT_REPAIR = 5;
    DELETE = 6;
}

// OrderLimit2 is provided by satellite to execute specific action on storage node within some limits
message OrderLimit2 {
    // unique serial to avoid replay attacks
    bytes serial_number = 1 [(gogoproto.customtype) = "SerialNumber", (gogoproto.nullable) = false];
    // satellite who issued this order limit allowing orderer to do the specified action
    bytes satellite_id = 2 [(gogoproto.customtype) = "NodeID", (gogoproto.nullable) = false]; 
    // uplink who requested or whom behalf the order limit to do an action
    bytes uplink_id = 3 [(gogoproto.customtype) = "NodeID", (gogoproto.nullable) = false];
    // storage node who can reclaim the order limit specified by serial
    bytes storage_node_id = 4 [(gogoproto.customtype) = "NodeID", (gogoproto.nullable) = false];
  
    // piece which is allowed to be touched
    bytes piece_id = 5 [(gogoproto.customtype) = "PieceID", (gogoproto.nullable) = false];
    // limit in bytes how much can be changed
    int64  limit = 6;
    PieceAction action = 7;
  
    google.protobuf.Timestamp piece_expiration = 8;
    google.protobuf.Timestamp order_expiration = 9;
  
    bytes satellite_signature = 10;
}

// Order2 is a one step of fullfilling Amount number of bytes from an OrderLimit2 with SerialNumber
message Order2 {
    // serial of the order limit that was signed
    bytes serial_number = 1 [(gogoproto.customtype) = "SerialNumber", (gogoproto.nullable) = false];
    // amount to be signed for
    int64 amount = 2;
    // signature
    bytes uplink_signature = 3;
}

message PieceHash {
    // piece id
    bytes piece_id = 1 [(gogoproto.customtype) = "PieceID", (gogoproto.nullable) = false];
    // hash of the piece that was/is uploaded
    bytes hash = 2;
    // signature either satellite or storage node
    bytes signature = 3;
}


service Orders {
    rpc Settlement(stream SettlementRequest) returns (stream SettlementResponse) {}
}

message SettlementRequest {
    OrderLimit2 limit = 1;
    Order2      order = 2;
}

message SettlementResponse {
    enum Status {
        INVALID  = 0;
        ACCEPTED = 1;
        REJECTED = 2;
    }

    bytes  serial_number = 1 [(gogoproto.customtype) = "SerialNumber", (gogoproto.nullable) = false];
    Status status = 2;
}