syntax = "proto3";

package pb;

import "basic.proto";

// Inter-blockchain Transfer Protocol
message IBTP {
    enum Type {
        INTERCHAIN       = 0;
        RECEIPT_SUCCESS  = 1;
        RECEIPT_FAILURE  = 2;
        ROLLBACK         = 3;
        RECEIPT_ROLLBACK = 4;
    }

    enum Category {
        REQUEST  = 0;
        RESPONSE = 1;
        UNKNOWN  = 2;
    }

    // ID of sending chain
    string from = 1;
    // ID of receiving chain
    string to = 2;
    // Index of inter-chain transaction
    uint64 nonce = 3;
    // inter-chain transaction type
    Type type = 4;
    // Timestamp of inter-chain events
    int64 timestamp = 5;
    // Proof of inter-chain transactions
    bytes proof = 6;
    // Encoded content used by inter-chain
    bytes payload = 7;
    // info about other txs in the same group
    StringUint64Map group = 8;
    // Message version
    string version = 9;
    // Self-defined fields used by app-chain
    bytes extra = 10;
}

message payload {
    bool  encrypted = 1;
    bytes content   = 2;
}

message content {
    string         src_contract_id = 1;
    string         dst_contract_id = 2;
    string         func            = 3;
    repeated bytes args            = 4;
    string         callback        = 5;
    repeated bytes argsCb          = 6;
    string         rollback        = 7;
    repeated bytes argsRb          = 8;
}

message IBTPs {
    repeated IBTP ibtps = 1;
}