Add support for Polygon (#11545)

* Fix a check for EIP presense
* Add support for Polygon
* Update default Polygon URL
* Trigger Build
* Use a more user-friendly error message for disabled Swaps API calls

app/scripts/controllers/network/network.js

@@ -169,7 +169,8 @@ export default class NetworkController extends EventEmitter {
       return EIPS[1559];
     }
     const latestBlock = await this.getLatestBlock();
-    const supportsEIP1559 = latestBlock.baseFeePerGas !== undefined;
+    const supportsEIP1559 =
+      latestBlock && latestBlock.baseFeePerGas !== undefined;
     this.setNetworkEIPSupport(1559, supportsEIP1559);
     return supportsEIP1559;
   }

shared/constants/network.js

@@ -49,10 +49,12 @@ export const ETH_SYMBOL = 'ETH';
 export const WETH_SYMBOL = 'WETH';
 export const TEST_ETH_SYMBOL = 'TESTETH';
 export const BNB_SYMBOL = 'BNB';
+export const MATIC_SYMBOL = 'MATIC';
 
 export const ETH_TOKEN_IMAGE_URL = './images/eth_logo.svg';
 export const TEST_ETH_TOKEN_IMAGE_URL = './images/black-eth-logo.svg';
 export const BNB_TOKEN_IMAGE_URL = './images/bnb.png';
+export const MATIC_TOKEN_IMAGE_URL = './images/matic-token.png';
 
 export const INFURA_PROVIDER_TYPES = [ROPSTEN, RINKEBY, KOVAN, MAINNET, GOERLI];
 

shared/constants/swaps.js

@@ -6,6 +6,9 @@ import {
   TEST_ETH_TOKEN_IMAGE_URL,
   BNB_TOKEN_IMAGE_URL,
   BSC_CHAIN_ID,
+  POLYGON_CHAIN_ID,
+  MATIC_SYMBOL,
+  MATIC_TOKEN_IMAGE_URL,
 } from './network';
 
 export const QUOTES_EXPIRED_ERROR = 'quotes-expired';
@@ -35,6 +38,14 @@ export const BNB_SWAPS_TOKEN_OBJECT = {
   iconUrl: BNB_TOKEN_IMAGE_URL,
 };
 
+export const MATIC_SWAPS_TOKEN_OBJECT = {
+  symbol: MATIC_SYMBOL,
+  name: 'Matic',
+  address: DEFAULT_TOKEN_ADDRESS,
+  decimals: 18,
+  iconUrl: MATIC_TOKEN_IMAGE_URL,
+};
+
 export const TEST_ETH_SWAPS_TOKEN_OBJECT = {
   symbol: TEST_ETH_SYMBOL,
   name: 'Test Ether',
@@ -52,6 +63,9 @@ const TESTNET_CONTRACT_ADDRESS = '0x881d40237659c251811cec9c364ef91dc08d300c';
 
 const BSC_CONTRACT_ADDRESS = '0x1a1ec25dc08e98e5e93f1104b5e5cdd298707d31';
 
+// It's the same as we use for BSC.
+const POLYGON_CONTRACT_ADDRESS = '0x1a1ec25dc08e98e5e93f1104b5e5cdd298707d31';
+
 export const ETH_WETH_CONTRACT_ADDRESS =
   '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2';
 
@@ -64,13 +78,16 @@ const SWAPS_TESTNET_HOST = 'https://metaswap-api.airswap-dev.codefi.network';
 
 const BSC_DEFAULT_BLOCK_EXPLORER_URL = 'https://bscscan.com/';
 const MAINNET_DEFAULT_BLOCK_EXPLORER_URL = 'https://etherscan.io/';
+const POLYGON_DEFAULT_BLOCK_EXPLORER_URL = 'https://polygonscan.com/';
 
 export const ALLOWED_SWAPS_CHAIN_IDS = {
   [MAINNET_CHAIN_ID]: true,
   [SWAPS_TESTNET_CHAIN_ID]: true,
   [BSC_CHAIN_ID]: true,
+  [POLYGON_CHAIN_ID]: true,
 };
 
+// This is mapping for v1 URLs and will be removed once we migrate to v2.
 export const METASWAP_CHAINID_API_HOST_MAP = {
   [MAINNET_CHAIN_ID]: METASWAP_ETH_API_HOST,
   [SWAPS_TESTNET_CHAIN_ID]: SWAPS_TESTNET_HOST,
@@ -81,17 +98,20 @@ export const SWAPS_CHAINID_CONTRACT_ADDRESS_MAP = {
   [MAINNET_CHAIN_ID]: MAINNET_CONTRACT_ADDRESS,
   [SWAPS_TESTNET_CHAIN_ID]: TESTNET_CONTRACT_ADDRESS,
   [BSC_CHAIN_ID]: BSC_CONTRACT_ADDRESS,
+  [POLYGON_CHAIN_ID]: POLYGON_CONTRACT_ADDRESS,
 };
 
 export const SWAPS_CHAINID_DEFAULT_TOKEN_MAP = {
   [MAINNET_CHAIN_ID]: ETH_SWAPS_TOKEN_OBJECT,
   [SWAPS_TESTNET_CHAIN_ID]: TEST_ETH_SWAPS_TOKEN_OBJECT,
   [BSC_CHAIN_ID]: BNB_SWAPS_TOKEN_OBJECT,
+  [POLYGON_CHAIN_ID]: MATIC_SWAPS_TOKEN_OBJECT,
 };
 
 export const SWAPS_CHAINID_DEFAULT_BLOCK_EXPLORER_URL_MAP = {
   [BSC_CHAIN_ID]: BSC_DEFAULT_BLOCK_EXPLORER_URL,
   [MAINNET_CHAIN_ID]: MAINNET_DEFAULT_BLOCK_EXPLORER_URL,
+  [POLYGON_CHAIN_ID]: POLYGON_DEFAULT_BLOCK_EXPLORER_URL,
 };
 
 export const ETHEREUM = 'ethereum';

ui/pages/swaps/swaps.util.js

@@ -77,6 +77,9 @@ const getBaseApi = function (
   const baseUrl = useNewSwapsApi
     ? getBaseUrlForNewSwapsApi(type, chainId)
     : METASWAP_CHAINID_API_HOST_MAP[chainId];
+  if (!baseUrl) {
+    throw new Error(`Swaps API calls are disabled for chainId: ${chainId}`);
+  }
   switch (type) {
     case 'trade':
       return `${baseUrl}/trades?`;