hedera 0.1.0

Hedera SDK for Rust
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use crate::{
    proto::{self, ToProto},
    AccountId, Client, Transaction,
};
use failure::Error;
use protobuf::RepeatedField;

pub struct TransactionCryptoTransfer {
    transfers: Vec<(AccountId, i64)>,
}

impl Transaction<TransactionCryptoTransfer> {
    pub fn crypto_transfer(client: &Client) -> Self {
        Self::new(
            client,
            TransactionCryptoTransfer {
                transfers: Vec::new(),
            },
        )
    }

    pub fn transfer(&mut self, id: AccountId, amount: i64) -> &mut Self {
        self.inner.transfers.push((id, amount));
        self
    }
}

impl ToProto<proto::Transaction::TransactionBody_oneof_data> for TransactionCryptoTransfer {
    fn to_proto(&self) -> Result<proto::Transaction::TransactionBody_oneof_data, Error> {
        let amounts: Result<Vec<proto::CryptoTransfer::AccountAmount>, Error> = self
            .transfers
            .iter()
            .map(|(id, amount)| {
                let mut pb = proto::CryptoTransfer::AccountAmount::new();
                pb.set_accountID(id.to_proto()?);
                pb.set_amount(*amount);
                Ok(pb)
            })
            .collect();

        let mut transfers = proto::CryptoTransfer::TransferList::new();
        transfers.set_accountAmounts(RepeatedField::from_vec(amounts?));

        let mut data = proto::CryptoTransfer::CryptoTransferTransactionBody::new();
        data.set_transfers(transfers);

        Ok(proto::Transaction::TransactionBody_oneof_data::cryptoTransfer(data))
    }
}