bobanetwork · sk-enya · Apr 24, 2024 · Apr 22, 2024 · Apr 22, 2024 · Apr 22, 2024
diff --git a/src/actions/bridgeAction.ts b/src/actions/bridgeAction.ts
@@ -70,6 +70,13 @@ export const setTeleportationOfAssetSupported =
       payload,
     })
 
+export const setTeleportationDisburserBalance =
+  (payload: string) => (dispatch) =>
+    dispatch({
+      type: 'BRIDGE/TELEPORTER/DISBURSER_BALANCE',
+      payload,
+    })
+
 export const setTeleportationDestChainId =
   (payload: BigNumberish) => (dispatch) =>
     dispatch({

diff --git a/src/actions/networkAction.ts b/src/actions/networkAction.ts
@@ -51,6 +51,11 @@ export const isTeleportationOfAssetSupported = (
     networkService.isTeleportationOfAssetSupported(layer, asset, destChainId)
   )
 
+export const getDisburserBalance = (layer: string, asset: string) =>
+  createAction('DEPOSIT/TELEPORTATION/DISBURSER_BALANCE', () =>
+    networkService.getNativeDisburserBalance(layer, asset)
+  )
+
 export const depositWithLightBridge = (
   layer: string,
   currency: string,

diff --git a/src/containers/modals/tokenPicker/TokenPickerModal.tsx b/src/containers/modals/tokenPicker/TokenPickerModal.tsx
@@ -1,10 +1,12 @@
 import React, { FC, useEffect, useState } from 'react'
 import {
   setTeleportationOfAssetSupported,
+  setTeleportationDisburserBalance,
   updateToken,
 } from 'actions/bridgeAction'
 import {
   fetchBalances,
+  getDisburserBalance,
   isTeleportationOfAssetSupported,
 } from 'actions/networkAction'
 import { closeModal } from 'actions/uiAction'
@@ -146,7 +148,11 @@ const TokenPickerModal: FC<TokenPickerModalProps> = ({ open, tokenIndex }) => {
       const isSupported = await dispatch(
         isTeleportationOfAssetSupported(layer, token.address, destChainId)
       )
+      const disburserBalance = await dispatch(
+        getDisburserBalance(layer, token.address)
+      )
       dispatch(setTeleportationOfAssetSupported(isSupported))
+      dispatch(setTeleportationDisburserBalance(disburserBalance))
     }
     handleClose()
   }

diff --git a/src/hooks/useBridgeAlerts/index.test.tsx b/src/hooks/useBridgeAlerts/index.test.tsx
@@ -101,6 +101,7 @@ describe('useBridgeAlerts', () => {
           'VALUE_LESS_THAN_MIN_BRIDGE_CONFIG_AMOUNT',
           'VALUE_GREATER_THAN_MAX_BRIDGE_CONFIG_AMOUNT',
           'MAX_BRIDGE_AMOUNT_PER_DAY_EXCEEDED',
+          'TELEPORTATION_DISBURSER_OUT_OF_FUNDS',
         ],
       },
       type: 'BRIDGE/ALERT/CLEAR',

diff --git a/src/hooks/useBridgeAlerts/index.ts b/src/hooks/useBridgeAlerts/index.ts
@@ -11,6 +11,7 @@ import {
   selectBobaFeeChoice,
   selectBobaPriceRatio,
   selectBridgeType,
+  selectTeleportationDisburserBalance,
   selectExitFee,
   selectFastDepositCost,
   selectFastExitCost,
@@ -33,6 +34,7 @@ import BN from 'bignumber.js'
 import { BRIDGE_TYPE } from 'containers/Bridging/BridgeTypeSelector'
 import { Network } from 'util/network/network.util'
 import { BigNumber, BigNumberish, ethers } from 'ethers'
+import { formatEther } from '@ethersproject/units'
 import { useNetworkInfo } from 'hooks/useNetworkInfo'
 
 enum ALERT_KEYS {
@@ -47,6 +49,7 @@ enum ALERT_KEYS {
   DEPRECATION_WARNING = 'DEPRECATION_WARNING',
   TELEPORTATION_ASSET_NOT_SUPPORTED = 'TELEPORTER_ASSET_NOT_SUPPORTED',
   TELEPORTATION_NO_UNCONVENTIONAL_WALLETS = 'TELEPORTATION_NO_UNCONVENTIONAL_WALLETS',
+  TELEPORTATION_DISBURSER_OUT_OF_FUNDS = 'TELEPORTATION_DISBURSER_OUT_OF_FUNDS',
 }
 
 interface ITeleportationTokenSupport {
@@ -68,6 +71,9 @@ const useBridgeAlerts = () => {
   const activeNetwork = useSelector(selectActiveNetwork())
   const tokenForTeleportationSupported: ITeleportationTokenSupport =
     useSelector(selectIsTeleportationOfAssetSupported())
+  const disburserBalance: BigNumber | undefined = useSelector(
+    selectTeleportationDisburserBalance()
+  )
 
   const { isActiveNetworkBnb } = useNetworkInfo()
   // fast input layer 1
@@ -116,10 +122,21 @@ const useBridgeAlerts = () => {
               ALERT_KEYS.VALUE_LESS_THAN_MIN_BRIDGE_CONFIG_AMOUNT,
               ALERT_KEYS.VALUE_GREATER_THAN_MAX_BRIDGE_CONFIG_AMOUNT,
               ALERT_KEYS.MAX_BRIDGE_AMOUNT_PER_DAY_EXCEEDED,
+              ALERT_KEYS.TELEPORTATION_DISBURSER_OUT_OF_FUNDS,
             ],
           })
         )
 
+        if (disburserBalance && disburserBalance.lt(amountToBridge)) {
+          dispatch(
+            setBridgeAlert({
+              meta: ALERT_KEYS.TELEPORTATION_DISBURSER_OUT_OF_FUNDS,
+              type: 'error',
+              text: `LightBridge has not enough funds for destination network left.`,
+            })
+          )
+        }
+
         const maxDepositAmount = Number(
           ethers.utils.formatEther(
             tokenForTeleportationSupported.maxDepositAmount

diff --git a/src/reducers/bridgeReducer.ts b/src/reducers/bridgeReducer.ts
@@ -35,6 +35,7 @@ interface IBridgeReducerState {
   amountToBridge: number
   destChainIdBridge: number
   isFetchTxBlockNumber: boolean
+  teleportationDisburserBalance: BigNumberish
   isTeleportationOfAssetSupported: {
     supported: boolean
     minDepositAmount: number
@@ -57,6 +58,7 @@ const initialState: IBridgeReducerState = {
   amountToBridge: 0,
   destChainIdBridge: 0,
   isFetchTxBlockNumber: false,
+  teleportationDisburserBalance: 0,
   isTeleportationOfAssetSupported: {
     supported: false,
     minDepositAmount: 0,

diff --git a/src/selectors/bridgeSelector.ts b/src/selectors/bridgeSelector.ts
@@ -36,5 +36,8 @@ export const selectIsFetchTxBlockNumber = () => (state) =>
 export const selectIsTeleportationOfAssetSupported = () => (state) =>
   state.bridge.isTeleportationOfAssetSupported
 
+export const selectTeleportationDisburserBalance = () => (state) =>
+  state.bridge.teleportationDisburserBalance
+
 export const selectReenterWithdrawalConfig = () => (state) =>
   state.bridge.withdrawalConfig
diff --git a/src/services/networkService.ts b/src/services/networkService.ts
@@ -42,6 +42,7 @@ import {
   CHAIN_ID_LIST,
   getNetworkDetail,
   getRpcUrl,
+  getRpcUrlByChainId,
   Network,
   networkLimitedAvailability,
   NetworkType,
@@ -2007,6 +2008,7 @@ class NetworkService {
   // FIXME: move this to separate service of earn.
   /***********************************************/
   /*****           Get Reward                *****/
+
   /***********************************************/
   async getReward(
     currencyAddress,
@@ -2145,6 +2147,24 @@ class NetworkService {
     return this.LightBridge!.attach(lightBridgeAddr).connect(provider)
   }
 
+  async getNativeDisburserBalance(destChainId, token) {
+    // not just simply L2/L1 as also L2<>L2 supported, ..
+    const destProvider = new ethers.providers.StaticJsonRpcProvider(
+      getRpcUrlByChainId(destChainId)
+    )
+    const isNative =
+      token === ethers.constants.AddressZero ||
+      token === this.addresses.L2_ETH_Address
+
+    const disburserAddr =
+      await this.getLightBridgeContract(destChainId)?.disburser()
+    if (!disburserAddr || !isNative) {
+      return
+    }
+    // TODO: Add token support later on (proper token mapping, avoid code duplication & maintenance overhead)
+    return destProvider.getBalance(disburserAddr)
+  }
+
   async isTeleportationOfAssetSupported(layer, token, destChainId) {
     const lightBridgeAddr =
       layer === Layer.L1