example commit

synapsecns · Nov 2, 2024 · a750e89 · a750e89
1 parent 36b6345
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Showing 4 changed files with 732 additions and 25 deletions.
diff --git a/packages/rest-api/package.json b/packages/rest-api/package.json
@@ -18,6 +18,7 @@
     "test:coverage": "jest --collect-coverage"
   },
   "dependencies": {
+    "@ethersproject/abi": "^5.7.0",
     "@ethersproject/address": "^5.7.0",
     "@ethersproject/bignumber": "^5.7.0",
     "@ethersproject/providers": "^5.7.2",

diff --git a/packages/rest-api/src/controllers/bridgeController.ts b/packages/rest-api/src/controllers/bridgeController.ts
@@ -1,11 +1,16 @@
 import { validationResult } from 'express-validator'
 import { parseUnits } from '@ethersproject/units'
+import { defaultAbiCoder, Interface } from '@ethersproject/abi'
 
 import { formatBNToString } from '../utils/formatBNToString'
 import { Synapse } from '../services/synapseService'
 import { tokenAddressToToken } from '../utils/tokenAddressToToken'
 import { logger } from '../middleware/logger'
 
+const BRIDGE_INTERFACE = new Interface([
+  'function bridge(address to, uint256 chainId, address token, uint256 amount, tuple(address routerAdapter, address tokenOut, uint256 minAmountOut, uint256 deadline, bytes rawParams) originQuery, tuple(address routerAdapter, address tokenOut, uint256 minAmountOut, uint256 deadline, bytes rawParams) destQuery) external payable',
+])
+
 export const bridgeController = async (req, res) => {
   const errors = validationResult(req)
   if (!errors.isEmpty()) {
@@ -42,6 +47,28 @@ export const bridgeController = async (req, res) => {
         fromChain.toString(),
         quote.originQuery.tokenOut
       )
+
+      const txData = BRIDGE_INTERFACE.encodeFunctionData('bridge', [
+        originUserAddress,
+        Number(toChain),
+        fromToken,
+        amountInWei,
+        [
+          quote.originQuery.routerAdapter,
+          quote.originQuery.tokenOut,
+          quote.originQuery.minAmountOut,
+          quote.originQuery.deadline,
+          quote.originQuery.rawParams
+        ],
+        [
+          quote.destQuery.routerAdapter,
+          quote.destQuery.tokenOut,
+          quote.destQuery.minAmountOut,
+          quote.destQuery.deadline,
+          quote.destQuery.rawParams
+        ]
+      ])
+
       return {
         ...quote,
         maxAmountOutStr: formatBNToString(
@@ -52,6 +79,7 @@ export const bridgeController = async (req, res) => {
           quote.feeAmount,
           originQueryTokenOutInfo.decimals
         ),
+        txData,
       }
     })
 

diff --git a/packages/rest-api/src/routes/bridgeRoute.ts b/packages/rest-api/src/routes/bridgeRoute.ts
@@ -101,6 +101,9 @@ const router: express.Router = express.Router()
  *                     type: string
  *                   bridgeFeeFormatted:
  *                     type: string
+ *                   txData:
+ *                     type: string
+ *                     description: Encoded transaction calldata for the bridge function
  *             example:
  *               - id: "01920c87-7f14-7cdf-90e1-e13b2d4af55f"
  *                 feeAmount:
@@ -147,6 +150,7 @@ const router: express.Router = express.Router()
  *                 destChainId: 42161
  *                 maxAmountOutStr: "999046.695719"
  *                 bridgeFeeFormatted: "400"
+ *                 txData: "0x3f4c16de000000000000000000000000..."
  *       400:
  *         description: Invalid input
  *         content: