syntax = "proto3";

package proto;

option java_package = "com.hederahashgraph.api.proto.java";
option java_multiple_files = true;

import "BasicTypes.proto";

/* An account, and the amount that it sends or receives during a cryptocurrency transfer. */
message AccountAmount {
    AccountID accountID = 1; // an account that sends or receives cryptocurrency
    sint64 amount = 2; // number of tinybars that the account sends (negative) or receives (positive)
}

/* a list of accounts and amounts to transfer out of each account (negative) or into it (positive). */
message TransferList {
    repeated AccountAmount accountAmounts = 1; // list of AccountAmount pairs, each of which has an account and an amount to transfer into it (positive) or out of it (negative)
}

/* Transfer cryptocurrency from some accounts to other accounts. The accounts list can contain up to 10 accounts. The amounts list must be the same length as the accounts list. Each negative amount is withdrawn from the corresponding account (a sender), and each positive one is added to the corresponding account (a receiver). The amounts list must sum to zero. Each amount is a number of tinyBars (there are 100,000,000 tinyBars in one Hbar). If any sender account fails to have sufficient hbars to do the withdrawal, then the entire transaction fails, and none of those transfers occur, though the transaction fee is still charged. This transaction must be signed by the keys for all the sending accounts, and for any receiving accounts that have receiverSigRequired == true. The signatures are in the same order as the accounts, skipping those accounts that don't need a signature. */
message CryptoTransferTransactionBody {
    TransferList transfers = 1; // accounts and amounts to transfer
}