synapsecns · ChiTimesChi · Mar 21, 2025 · Mar 18, 2025 · Mar 18, 2025 · Mar 18, 2025
@@ -0,0 +1,92 @@
+import { validationResult } from 'express-validator'
+
+import { Synapse } from '../services/synapseService'
+import { logger } from '../middleware/logger'
+import {
+  DEFAULT_SWAP_SLIPPAGE_BIPS,
+  SLIPPAGE_BIPS_DENOMINATOR,
+} from '../constants'
+import { stringifyTxValue } from '../utils/replaceTxValue'
+
+export const intentController = async (req, res) => {
+  const errors = validationResult(req)
+  if (!errors.isEmpty()) {
+    return res.status(400).json({ errors: errors.array() })
+  }
+  try {
+    const {
+      fromChainId,
+      fromToken,
+      fromAmount,
+      fromSender,
+      toChainId,
+      toToken,
+      toRecipient,
+      slippage,
+      allowMultipleTxs,
+    } = req.query as {
+      fromChainId: number
+      fromToken: string
+      fromAmount: string
+      fromSender?: string
+      toChainId: number
+      toToken: string
+      toRecipient?: string
+      slippage?: number
+      allowMultipleTxs?: boolean
+    }
+
+    // Convert percentage slippage to bips
+    const slippageBips = slippage ? slippage * 100 : DEFAULT_SWAP_SLIPPAGE_BIPS
+
+    const intentQuotes = await Synapse.intent({
+      fromChainId,
+      fromToken,
+      fromAmount,
+      fromSender,
+      toChainId,
+      toToken,
+      toRecipient,
+      slippage: {
+        numerator: slippageBips,
+        denominator: SLIPPAGE_BIPS_DENOMINATOR,
+      },
+      allowMultipleTxs,
+    })
+
+    // Convert all BigNumber values to strings.
+    const payload = intentQuotes.map((quote) => ({
+      ...quote,
+      fromAmount: quote.fromAmount.toString(),
+      expectedToAmount: quote.expectedToAmount.toString(),
+      minToAmount: quote.minToAmount.toString(),
+      steps: quote.steps.map((step) => ({
+        ...step,
+        fromAmount: step.fromAmount.toString(),
+        expectedToAmount: step.expectedToAmount.toString(),
+        minToAmount: step.minToAmount.toString(),
+        gasDropAmount: step.gasDropAmount.toString(),
+        callData: stringifyTxValue({
+          tx: step.tx,
+          preserveTx: !!fromSender && !!toRecipient,
+        }),
+        tx: undefined,
+      })),
+    }))
+
+    logger.info(`Successful intentController response`, {
+      query: req.query,
+      payload,
+    })
+    res.json(payload)
+  } catch (err) {
+    logger.error(`Error in intentController`, {
+      query: req.query,
+      error: err.message,
+      stack: err.stack,
+    })
+    res.status(500).json({
+      error: 'An unexpected error occurred in /intent. Please try again later.',
+    })
+  }
+}
@@ -108,9 +108,11 @@ const router: express.Router = express.Router()
  *                   estimatedTime:
  *                     type: integer
  *                     description: Estimated time for the bridge in seconds
- *                   moduleName:
- *                     type: string
- *                     description: The name of the bridge module used for this quote
+ *                   moduleNames:
+ *                     type: array
+ *                     items:
+ *                       type: string
+ *                     description: The names of the bridge or swap modules used for this quote
  *                   gasDropAmount:
  *                     type: string
  *                     description: Amount of native token airdropped on destination chain (in native token decimals)
@@ -139,7 +141,7 @@ const router: express.Router = express.Router()
  *                 minToAmount: "994051462240"
  *                 routerAddress: "0x512000a034E154908Efb1eC48579F4ffDb000512"
  *                 estimatedTime: 30
- *                 moduleName: "SynapseRFQ"
+ *                 moduleNames: ["SynapseRFQ"]
  *                 gasDropAmount: "0"
  *                 callData: {
  *                   to: "0x512000a034E154908Efb1eC48579F4ffDb000512",

@@ -15,10 +15,12 @@ import destinationTokensRoute from './destinationTokensRoute'
 import bridgeLimitsRoute from './bridgeLimitsRoute'
 import chainIconRoute from './chainIconRoute'
 import addressIconRoute from './addressIconRoute'
+import intentRoute from './intentRoute'
 
 const router: express.Router = express.Router()
 
 router.use('/', indexRoute)
+router.use('/intent', intentRoute)
 router.use('/swap', swapRoute)
 router.use('/swapTxInfo', swapTxInfoRoute)
 router.use('/swap/v2', swapV2Route)