feat(LRAPI): add 1inch classic swap rpc

Cargo.toml

@@ -39,6 +39,7 @@ members = [
     "mm2src/proxy_signature",
     "mm2src/rpc_task",
     "mm2src/trezor",
+    "mm2src/trading_api",
 ]
 
 exclude = [

mm2src/coins/eth.rs

@@ -310,20 +310,6 @@ pub type Web3RpcFut<T> = Box<dyn Future<Item = T, Error = MmError<Web3RpcError>>
 pub type Web3RpcResult<T> = Result<T, MmError<Web3RpcError>>;
 type EthPrivKeyPolicy = PrivKeyPolicy<KeyPair>;
 
-#[macro_export]
-macro_rules! wei_from_gwei_decimal {
-    ($big_decimal: expr) => {
-        $crate::eth::wei_from_big_decimal($big_decimal, $crate::eth::ETH_GWEI_DECIMALS)
-    };
-}
-
-#[macro_export]
-macro_rules! wei_to_gwei_decimal {
-    ($gwei: expr) => {
-        $crate::eth::u256_to_big_decimal($gwei, $crate::eth::ETH_GWEI_DECIMALS)
-    };
-}
-
 #[derive(Clone, Debug)]
 pub(crate) struct LegacyGasPrice {
     pub(crate) gas_price: U256,
@@ -368,11 +354,11 @@ impl TryFrom<PayForGasParams> for PayForGasOption {
     fn try_from(param: PayForGasParams) -> Result<Self, Self::Error> {
         match param {
             PayForGasParams::Legacy(legacy) => Ok(Self::Legacy(LegacyGasPrice {
-                gas_price: wei_from_gwei_decimal!(&legacy.gas_price)?,
+                gas_price: wei_from_gwei_decimal(&legacy.gas_price)?,
             })),
             PayForGasParams::Eip1559(eip1559) => Ok(Self::Eip1559(Eip1559FeePerGas {
-                max_fee_per_gas: wei_from_gwei_decimal!(&eip1559.max_fee_per_gas)?,
-                max_priority_fee_per_gas: wei_from_gwei_decimal!(&eip1559.max_priority_fee_per_gas)?,
+                max_fee_per_gas: wei_from_gwei_decimal(&eip1559.max_fee_per_gas)?,
+                max_priority_fee_per_gas: wei_from_gwei_decimal(&eip1559.max_priority_fee_per_gas)?,
             })),
         }
     }
@@ -866,6 +852,9 @@ impl EthCoinImpl {
         let guard = self.erc20_tokens_infos.lock().unwrap();
         (*guard).clone()
     }
+
+    #[inline(always)]
+    pub fn chain_id(&self) -> u64 { self.chain_id }
 }
 
 async fn get_raw_transaction_impl(coin: EthCoin, req: RawTransactionRequest) -> RawTransactionResult {
@@ -4539,7 +4528,7 @@ impl EthCoin {
         self.call(request, Some(BlockId::Number(BlockNumber::Latest))).await
     }
 
-    fn allowance(&self, spender: Address) -> Web3RpcFut<U256> {
+    pub(crate) fn allowance(&self, spender: Address) -> Web3RpcFut<U256> {
         let coin = self.clone();
         let fut = async move {
             match coin.coin_type {
@@ -4604,7 +4593,7 @@ impl EthCoin {
         Box::new(fut.boxed().compat())
     }
 
-    fn approve(&self, spender: Address, amount: U256) -> EthTxFut {
+    pub(crate) fn approve(&self, spender: Address, amount: U256) -> EthTxFut {
         let coin = self.clone();
         let fut = async move {
             let token_addr = match coin.coin_type {
@@ -5963,6 +5952,12 @@ pub fn wei_from_big_decimal(amount: &BigDecimal, decimals: u8) -> NumConversResu
     U256::from_dec_str(&amount).map_to_mm(|e| NumConversError::new(format!("{:?}", e)))
 }
 
+pub fn wei_from_gwei_decimal(bigdec: &BigDecimal) -> NumConversResult<U256> {
+    wei_from_big_decimal(bigdec, ETH_GWEI_DECIMALS)
+}
+
+pub fn wei_to_gwei_decimal(wei: U256) -> NumConversResult<BigDecimal> { u256_to_big_decimal(wei, ETH_GWEI_DECIMALS) }
+
 impl Transaction for SignedEthTx {
     fn tx_hex(&self) -> Vec<u8> { rlp::encode(self).to_vec() }
 

mm2src/coins/eth/eip1559_gas_fee.rs

@@ -1,8 +1,8 @@
 //! Provides estimations of base and priority fee per gas or fetch estimations from a gas api provider
 
 use super::web3_transport::FeeHistoryResult;
-use super::{Web3RpcError, Web3RpcResult};
-use crate::{wei_from_gwei_decimal, wei_to_gwei_decimal, EthCoin, NumConversError};
+use super::{wei_from_gwei_decimal, wei_to_gwei_decimal, Web3RpcError, Web3RpcResult};
+use crate::{EthCoin, NumConversError};
 use ethereum_types::U256;
 use mm2_err_handle::mm_error::MmError;
 use mm2_err_handle::or_mm_error::OrMmError;
@@ -104,24 +104,24 @@ impl TryFrom<InfuraFeePerGas> for FeePerGasEstimated {
 
     fn try_from(infura_fees: InfuraFeePerGas) -> Result<Self, Self::Error> {
         Ok(Self {
-            base_fee: wei_from_gwei_decimal!(&infura_fees.estimated_base_fee)?,
+            base_fee: wei_from_gwei_decimal(&infura_fees.estimated_base_fee)?,
             low: FeePerGasLevel {
-                max_fee_per_gas: wei_from_gwei_decimal!(&infura_fees.low.suggested_max_fee_per_gas)?,
-                max_priority_fee_per_gas: wei_from_gwei_decimal!(&infura_fees.low.suggested_max_priority_fee_per_gas)?,
+                max_fee_per_gas: wei_from_gwei_decimal(&infura_fees.low.suggested_max_fee_per_gas)?,
+                max_priority_fee_per_gas: wei_from_gwei_decimal(&infura_fees.low.suggested_max_priority_fee_per_gas)?,
                 min_wait_time: Some(infura_fees.low.min_wait_time_estimate),
                 max_wait_time: Some(infura_fees.low.max_wait_time_estimate),
             },
             medium: FeePerGasLevel {
-                max_fee_per_gas: wei_from_gwei_decimal!(&infura_fees.medium.suggested_max_fee_per_gas)?,
-                max_priority_fee_per_gas: wei_from_gwei_decimal!(
-                    &infura_fees.medium.suggested_max_priority_fee_per_gas
+                max_fee_per_gas: wei_from_gwei_decimal(&infura_fees.medium.suggested_max_fee_per_gas)?,
+                max_priority_fee_per_gas: wei_from_gwei_decimal(
+                    &infura_fees.medium.suggested_max_priority_fee_per_gas,
                 )?,
                 min_wait_time: Some(infura_fees.medium.min_wait_time_estimate),
                 max_wait_time: Some(infura_fees.medium.max_wait_time_estimate),
             },
             high: FeePerGasLevel {
-                max_fee_per_gas: wei_from_gwei_decimal!(&infura_fees.high.suggested_max_fee_per_gas)?,
-                max_priority_fee_per_gas: wei_from_gwei_decimal!(&infura_fees.high.suggested_max_priority_fee_per_gas)?,
+                max_fee_per_gas: wei_from_gwei_decimal(&infura_fees.high.suggested_max_fee_per_gas)?,
+                max_priority_fee_per_gas: wei_from_gwei_decimal(&infura_fees.high.suggested_max_priority_fee_per_gas)?,
                 min_wait_time: Some(infura_fees.high.min_wait_time_estimate),
                 max_wait_time: Some(infura_fees.high.max_wait_time_estimate),
             },
@@ -143,33 +143,33 @@ impl TryFrom<BlocknativeBlockPricesResponse> for FeePerGasEstimated {
             return Ok(FeePerGasEstimated::default());
         }
         Ok(Self {
-            base_fee: wei_from_gwei_decimal!(&block_prices.block_prices[0].base_fee_per_gas)?,
+            base_fee: wei_from_gwei_decimal(&block_prices.block_prices[0].base_fee_per_gas)?,
             low: FeePerGasLevel {
-                max_fee_per_gas: wei_from_gwei_decimal!(
-                    &block_prices.block_prices[0].estimated_prices[2].max_fee_per_gas
+                max_fee_per_gas: wei_from_gwei_decimal(
+                    &block_prices.block_prices[0].estimated_prices[2].max_fee_per_gas,
                 )?,
-                max_priority_fee_per_gas: wei_from_gwei_decimal!(
-                    &block_prices.block_prices[0].estimated_prices[2].max_priority_fee_per_gas
+                max_priority_fee_per_gas: wei_from_gwei_decimal(
+                    &block_prices.block_prices[0].estimated_prices[2].max_priority_fee_per_gas,
                 )?,
                 min_wait_time: None,
                 max_wait_time: None,
             },
             medium: FeePerGasLevel {
-                max_fee_per_gas: wei_from_gwei_decimal!(
-                    &block_prices.block_prices[0].estimated_prices[1].max_fee_per_gas
+                max_fee_per_gas: wei_from_gwei_decimal(
+                    &block_prices.block_prices[0].estimated_prices[1].max_fee_per_gas,
                 )?,
-                max_priority_fee_per_gas: wei_from_gwei_decimal!(
-                    &block_prices.block_prices[0].estimated_prices[1].max_priority_fee_per_gas
+                max_priority_fee_per_gas: wei_from_gwei_decimal(
+                    &block_prices.block_prices[0].estimated_prices[1].max_priority_fee_per_gas,
                 )?,
                 min_wait_time: None,
                 max_wait_time: None,
             },
             high: FeePerGasLevel {
-                max_fee_per_gas: wei_from_gwei_decimal!(
-                    &block_prices.block_prices[0].estimated_prices[0].max_fee_per_gas
+                max_fee_per_gas: wei_from_gwei_decimal(
+                    &block_prices.block_prices[0].estimated_prices[0].max_fee_per_gas,
                 )?,
-                max_priority_fee_per_gas: wei_from_gwei_decimal!(
-                    &block_prices.block_prices[0].estimated_prices[0].max_priority_fee_per_gas
+                max_priority_fee_per_gas: wei_from_gwei_decimal(
+                    &block_prices.block_prices[0].estimated_prices[0].max_priority_fee_per_gas,
                 )?,
                 min_wait_time: None,
                 max_wait_time: None,
@@ -260,7 +260,7 @@ impl FeePerGasSimpleEstimator {
         let max_priority_fee_per_gas = Self::percentile_of(&level_rewards, Self::PRIORITY_FEE_PERCENTILES[level_index]);
         // Convert the priority fee to BigDecimal gwei, falling back to 0 on error.
         let max_priority_fee_per_gas_gwei =
-            wei_to_gwei_decimal!(max_priority_fee_per_gas).unwrap_or_else(|_| BigDecimal::from(0));
+            wei_to_gwei_decimal(max_priority_fee_per_gas).unwrap_or_else(|_| BigDecimal::from(0));
 
         // Calculate the max fee per gas by adjusting the base fee and adding the priority fee.
         let adjust_max_fee =
@@ -273,7 +273,7 @@ impl FeePerGasSimpleEstimator {
 
         Ok(FeePerGasLevel {
             max_priority_fee_per_gas,
-            max_fee_per_gas: wei_from_gwei_decimal!(&max_fee_per_gas_dec)?,
+            max_fee_per_gas: wei_from_gwei_decimal(&max_fee_per_gas_dec)?,
             // TODO: Consider adding default wait times if applicable (and mark them as uncertain).
             min_wait_time: None,
             max_wait_time: None,
@@ -290,7 +290,7 @@ impl FeePerGasSimpleEstimator {
             .first()
             .cloned()
             .unwrap_or_else(|| U256::from(0));
-        let latest_base_fee_dec = wei_to_gwei_decimal!(latest_base_fee).unwrap_or_else(|_| BigDecimal::from(0));
+        let latest_base_fee_dec = wei_to_gwei_decimal(latest_base_fee).unwrap_or_else(|_| BigDecimal::from(0));
 
         // The predicted base fee is not used for calculating eip1559 values here and is provided for other purposes
         // (f.e if the caller would like to do own estimates of max fee and max priority fee)

mm2src/coins/eth/eth_rpc.rs

@@ -241,8 +241,8 @@ impl EthCoin {
             .and_then(|t| serde_json::from_value(t).map_err(Into::into))
     }
 
-    /// Get chain id
-    pub(crate) async fn chain_id(&self) -> Result<U256, web3::Error> {
+    /// Get chain id from network
+    pub(crate) async fn network_chain_id(&self) -> Result<U256, web3::Error> {
         self.try_rpc_send("eth_chainId", vec![])
             .await
             .and_then(|t| serde_json::from_value(t).map_err(Into::into))

mm2src/coins/lp_coins.rs

@@ -41,6 +41,7 @@
 #[macro_use] extern crate serde_json;
 #[macro_use] extern crate ser_error_derive;
 
+use crate::eth::Web3RpcError;
 use async_trait::async_trait;
 use base58::FromBase58Error;
 use bip32::ExtendedPrivateKey;
@@ -218,10 +219,9 @@ pub mod coins_tests;
 
 pub mod eth;
 use eth::eth_swap_v2::{PaymentStatusErr, PrepareTxDataError, ValidatePaymentV2Err};
-use eth::GetValidEthWithdrawAddError;
-use eth::{eth_coin_from_conf_and_request, get_eth_address, EthCoin, EthGasDetailsErr, EthTxFeeDetails,
-          GetEthAddressError, SignedEthTx};
-use ethereum_types::U256;
+use eth::{eth_coin_from_conf_and_request, get_eth_address, u256_to_big_decimal, wei_from_big_decimal, EthCoin,
+          EthGasDetailsErr, EthTxFeeDetails, GetEthAddressError, GetValidEthWithdrawAddError, SignedEthTx};
+use ethereum_types::{Address as EthAddress, U256};
 
 pub mod hd_wallet;
 use hd_wallet::{AccountUpdatingError, AddressDerivingError, HDAccountOps, HDAddressId, HDAddressOps, HDCoinAddress,
@@ -660,6 +660,10 @@ impl TransactionErr {
     }
 }
 
+impl std::fmt::Display for TransactionErr {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { write!(f, "{}", self.get_plain_text_format()) }
+}
+
 #[derive(Debug, PartialEq)]
 pub enum FoundSwapTxSpend {
     Spent(TransactionEnum),
@@ -5599,3 +5603,74 @@ pub mod for_tests {
         }
     }
 }
+
+#[derive(Debug, Deserialize)]
+pub struct Erc20ApproveRequest {
+    coin: String,
+    spender: EthAddress,
+    amount: BigDecimal,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct Erc20AllowanceRequest {
+    coin: String,
+    spender: EthAddress,
+}
+
+#[derive(Debug, Deserialize, Display, EnumFromStringify, Serialize, SerializeErrorType)]
+#[serde(tag = "error_type", content = "error_data")]
+pub enum Erc20CallError {
+    #[display(fmt = "No such coin {}", coin)]
+    NoSuchCoin { coin: String },
+    #[display(fmt = "Coin not supported {}", coin)]
+    CoinNotSupported { coin: String },
+    #[from_stringify("NumConversError")]
+    #[display(fmt = "Invalid param: {}", _0)]
+    InvalidParam(String),
+    #[from_stringify("TransactionErr")]
+    #[display(fmt = "Transaction error {}", _0)]
+    TransactionError(String),
+    #[from_stringify("Web3RpcError")]
+    #[display(fmt = "Web3 RPC error {}", _0)]
+    Web3RpcError(String),
+}
+
+impl HttpStatusCode for Erc20CallError {
+    fn status_code(&self) -> StatusCode {
+        match self {
+            Erc20CallError::NoSuchCoin { .. }
+            | Erc20CallError::CoinNotSupported { .. }
+            | Erc20CallError::InvalidParam(_)
+            | Erc20CallError::TransactionError(_)
+            | Erc20CallError::Web3RpcError(_) => StatusCode::BAD_REQUEST,
+        }
+    }
+}
+
+/// Call allowance for ERC20 tokens (see https://eips.ethereum.org/EIPS/eip-20#approve).
+/// Returns BigDecimal value.
+pub async fn allowance_rpc(ctx: MmArc, req: Erc20AllowanceRequest) -> MmResult<BigDecimal, Erc20CallError> {
+    match lp_coinfind_or_err(&ctx, &req.coin).await {
+        Ok(MmCoinEnum::EthCoin(eth_coin)) => {
+            let wei = eth_coin.allowance(req.spender).compat().await?;
+            let amount = u256_to_big_decimal(wei, eth_coin.decimals())?;
+            Ok(amount)
+        },
+        Ok(_) => Err(MmError::new(Erc20CallError::CoinNotSupported { coin: req.coin })),
+        Err(_) => Err(MmError::new(Erc20CallError::NoSuchCoin { coin: req.coin.clone() })),
+    }
+}
+
+/// Call approve for ERC20 coins (see https://eips.ethereum.org/EIPS/eip-20#allowance).
+/// Returns signed transaction to send to the chain.
+pub async fn approve_rpc(ctx: MmArc, req: Erc20ApproveRequest) -> MmResult<BytesJson, Erc20CallError> {
+    match lp_coinfind_or_err(&ctx, &req.coin).await {
+        Ok(MmCoinEnum::EthCoin(eth_coin)) => {
+            let amount = wei_from_big_decimal(&req.amount, eth_coin.decimals())?;
+            let tx = eth_coin.approve(req.spender, amount).compat().await?;
+            Ok(tx.tx_hash_as_bytes())
+        },
+        Ok(_) => Err(MmError::new(Erc20CallError::CoinNotSupported { coin: req.coin })),
+        Err(_) => Err(MmError::new(Erc20CallError::NoSuchCoin { coin: req.coin.clone() })),
+    }
+}