feat/ add ETCswap V3 and V2 connectors

src/chains/etc/etc.ts

@@ -0,0 +1,115 @@
+import abi from '../ethereum/ethereum.abi.json';
+import { logger } from '../../services/logger';
+import { Contract, Transaction, Wallet } from 'ethers';
+import { EthereumBase } from '../ethereum/ethereum-base';
+import { getEthereumConfig as getETCChainConfig } from '../ethereum/ethereum.config';
+import { Provider } from '@ethersproject/abstract-provider';
+import { Chain as Ethereumish } from '../../services/common-interfaces';
+import { ConfigManagerV2 } from '../../services/config-manager-v2';
+import { EVMController } from '../ethereum/evm.controllers';
+import { ETCSwapConfig } from '../../connectors/etcswap/etcswap.config';
+
+export class ETCChain extends EthereumBase implements Ethereumish {
+  private static _instances: { [name: string]: ETCChain };
+  private _chain: string;
+  private _gasPrice: number;
+  private _gasPriceRefreshInterval: number | null;
+  private _nativeTokenSymbol: string;
+  public controller;
+
+  private constructor(network: string) {
+    const config = getETCChainConfig('etc', network);
+    super(
+      'etc',
+      config.network.chainID,
+      config.network.nodeURL,
+      config.network.tokenListSource,
+      config.network.tokenListType,
+      config.manualGasPrice,
+      config.gasLimitTransaction,
+      ConfigManagerV2.getInstance().get('server.nonceDbPath'),
+      ConfigManagerV2.getInstance().get('server.transactionDbPath')
+    );
+    this._chain = config.network.name;
+    this._nativeTokenSymbol = config.nativeCurrencySymbol;
+    this._gasPrice = config.manualGasPrice;
+    this._gasPriceRefreshInterval =
+      config.network.gasPriceRefreshInterval !== undefined
+        ? config.network.gasPriceRefreshInterval
+        : null;
+
+    this.updateGasPrice();
+    this.controller = EVMController;
+  }
+
+  public static getInstance(network: string): ETCChain {
+    if (ETCChain._instances === undefined) {
+      ETCChain._instances = {};
+    }
+    if (!(network in ETCChain._instances)) {
+      ETCChain._instances[network] = new ETCChain(network);
+    }
+
+    return ETCChain._instances[network];
+  }
+
+  public static getConnectedInstances(): { [name: string]: ETCChain } {
+    return ETCChain._instances;
+  }
+
+  /**
+   * Automatically update the prevailing gas price on the network from the connected RPC node.
+   */
+  async updateGasPrice(): Promise<void> {
+    if (this._gasPriceRefreshInterval === null) {
+      return;
+    }
+
+    const gasPrice: number = (await this.provider.getGasPrice()).toNumber();
+
+    this._gasPrice = gasPrice * 1e-9;
+
+    setTimeout(
+      this.updateGasPrice.bind(this),
+      this._gasPriceRefreshInterval * 1000
+    );
+  }
+
+  // getters
+
+  public get gasPrice(): number {
+    return this._gasPrice;
+  }
+
+  public get nativeTokenSymbol(): string {
+    return this._nativeTokenSymbol;
+  }
+
+  public get chain(): string {
+    return this._chain;
+  }
+
+  getContract(tokenAddress: string, signerOrProvider?: Wallet | Provider) {
+    return new Contract(tokenAddress, abi.ERC20Abi, signerOrProvider);
+  }
+
+  getSpender(reqSpender: string): string {
+    let spender: string;
+    if (reqSpender === 'etcswapLP') {
+      spender = ETCSwapConfig.config.etcswapV3NftManagerAddress(
+        this._chain
+      );
+    } else {
+      spender = reqSpender;
+    }
+    return spender;
+  }
+
+  // cancel transaction
+  async cancelTx(wallet: Wallet, nonce: number): Promise<Transaction> {
+    logger.info(
+      'Canceling any existing transaction(s) with nonce number ' + nonce + '.'
+    );
+    return super.cancelTxWithGasPrice(wallet, nonce, this._gasPrice * 2);
+  }
+}

src/chains/ethereum/ethereum.validators.ts

@@ -65,6 +65,7 @@ export const validateSpender: Validator = mkValidator(
       val === 'curve' ||
       val === 'carbonamm' ||
       val === 'balancer' ||
+      val === 'etcswapLP' ||
       isAddress(val))
 );
 

src/connectors/connectors.routes.ts

@@ -25,6 +25,7 @@ import { QuipuswapConfig } from './quipuswap/quipuswap.config';
 import { OsmosisConfig } from '../chains/osmosis/osmosis.config';
 import { CarbonConfig } from './carbon/carbon.config';
 import { BalancerConfig } from './balancer/balancer.config';
+import { ETCSwapConfig } from './etcswap/etcswap.config';
 
 export namespace ConnectorsRoutes {
   export const router = Router();
@@ -190,6 +191,13 @@ export namespace ConnectorsRoutes {
             chain_type: BalancerConfig.config.chainType,
             available_networks: BalancerConfig.config.availableNetworks,
           },
+          {
+            name: 'etcswapLP',
+            trading_type: ETCSwapConfig.config.tradingTypes('LP'),
+            chain_type: ETCSwapConfig.config.chainType,
+            available_networks: ETCSwapConfig.config.availableNetworks,
+            additional_spenders: ['etcswap'],
+          },
         ],
       });
     })

src/connectors/etcswap/etcswap.config.ts

@@ -0,0 +1,45 @@
+import {
+  buildConfig,
+  NetworkConfig as V2NetworkConfig,
+} from '../../network/network.utils';
+import { ConfigManagerV2 } from '../../services/config-manager-v2';
+
+export namespace ETCSwapConfig {
+  export interface NetworkConfig extends Omit<V2NetworkConfig, 'tradingTypes'> {
+    maximumHops: number;
+    etcswapV3SmartOrderRouterAddress: (network: string) => string;
+    etcswapV3NftManagerAddress: (network: string) => string;
+    tradingTypes: (type: string) => Array<string>;
+    useRouter?: boolean;
+    feeTier?: string;
+  }
+
+  export const v2Config: V2NetworkConfig = buildConfig(
+    'etcswap',
+    ['AMM'],
+    [
+      { chain: 'etc', networks: ['mainnet'] },
+    ],
+    'EVM',
+  );
+
+  export const config: NetworkConfig = {
+    ...v2Config,
+    ...{
+      maximumHops: ConfigManagerV2.getInstance().get(`etcswap.maximumHops`),
+      etcswapV3SmartOrderRouterAddress: (network: string) =>
+        ConfigManagerV2.getInstance().get(
+          `etcswap.contractAddresses.${network}.etcswapV3SmartOrderRouterAddress`,
+        ),
+      etcswapV3NftManagerAddress: (network: string) =>
+        ConfigManagerV2.getInstance().get(
+          `etcswap.contractAddresses.${network}.etcswapV3NftManagerAddress`,
+        ),
+      tradingTypes: (type: string) => {
+        return type === 'swap' ? ['AMM'] : ['AMM_LP'];
+      },
+      useRouter: ConfigManagerV2.getInstance().get(`etcswap.useRouter`),
+      feeTier: ConfigManagerV2.getInstance().get(`etcswap.feeTier`),
+    },
+  };
+}