chore(multicall/migrate): move some v1 stuff around for migrate

src/constants/index.ts

-import { ChainId, Token, WETH, JSBI, Percent } from '@uniswap/sdk'
+import { ChainId, JSBI, Percent, Token, WETH } from '@uniswap/sdk'
 import { fortmatic, injected, portis, walletconnect, walletlink } from '../connectors'
 
-export const V1_FACTORY_ADDRESS = '0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95'
-
 export const ROUTER_ADDRESS = '0xf164fC0Ec4E93095b804a4795bBe1e041497b92a'
 
 // used for display in the default list when adding liquidity

src/constants/v1/index.ts

+import { Interface } from '@ethersproject/abi'
+import V1_EXCHANGE_ABI from './v1_exchange.json'
+import V1_FACTORY_ABI from './v1_factory.json'
+
+const V1_FACTORY_ADDRESS = '0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95'
+const V1_FACTORY_INTERFACE = new Interface(V1_FACTORY_ABI)
+const V1_EXCHANGE_INTERFACE = new Interface(V1_EXCHANGE_ABI)
+
+export { V1_FACTORY_ADDRESS, V1_FACTORY_INTERFACE, V1_FACTORY_ABI, V1_EXCHANGE_INTERFACE, V1_EXCHANGE_ABI }

src/constants/abis/v1_factory.json → src/constants/v1/v1_factory.json

@@ -14,8 +14,7 @@
     "inputs": [{ "type": "address", "name": "template" }],
     "constant": false,
     "payable": false,
-    "type": "function",
-    "gas": 35725
+    "type": "function"
   },
   {
     "name": "createExchange",
@@ -23,8 +22,7 @@
     "inputs": [{ "type": "address", "name": "token" }],
     "constant": false,
     "payable": false,
-    "type": "function",
-    "gas": 187911
+    "type": "function"
   },
   {
     "name": "getExchange",
@@ -32,8 +30,7 @@
     "inputs": [{ "type": "address", "name": "token" }],
     "constant": true,
     "payable": false,
-    "type": "function",
-    "gas": 715
+    "type": "function"
   },
   {
     "name": "getToken",
@@ -41,8 +38,7 @@
     "inputs": [{ "type": "address", "name": "exchange" }],
     "constant": true,
     "payable": false,
-    "type": "function",
-    "gas": 745
+    "type": "function"
   },
   {
     "name": "getTokenWithId",
@@ -50,8 +46,7 @@
     "inputs": [{ "type": "uint256", "name": "token_id" }],
     "constant": true,
     "payable": false,
-    "type": "function",
-    "gas": 736
+    "type": "function"
   },
   {
     "name": "exchangeTemplate",
@@ -59,8 +54,7 @@
     "inputs": [],
     "constant": true,
     "payable": false,
-    "type": "function",
-    "gas": 633
+    "type": "function"
   },
   {
     "name": "tokenCount",
@@ -68,7 +62,6 @@
     "inputs": [],
     "constant": true,
     "payable": false,
-    "type": "function",
-    "gas": 663
+    "type": "function"
   }
 ]

src/data/V1.ts

@@ -2,7 +2,7 @@ import { ChainId, Pair, Percent, Route, Token, TokenAmount, Trade, TradeType, WE
 import { useMemo } from 'react'
 import { useActiveWeb3React } from '../hooks'
 import { useV1FactoryContract } from '../hooks/useContract'
-import { useSingleCallResult } from '../state/multicall/hooks'
+import { NEVER_RELOAD, useSingleCallResult, useSingleContractMultipleData } from '../state/multicall/hooks'
 import { useETHBalances, useTokenBalance } from '../state/wallet/hooks'
 
 function useV1PairAddress(tokenAddress?: string): string | undefined {
@@ -29,6 +29,20 @@ function useMockV1Pair(token?: Token): MockV1Pair | undefined {
     : undefined
 }
 
+export function useAllV1ExchangeAddresses(): string[] {
+  const factory = useV1FactoryContract()
+  const exchangeCount = useSingleCallResult(factory, 'tokenCount')?.result
+
+  const parsedCount = parseInt(exchangeCount?.toString() ?? '0')
+
+  const indices = [...Array(parsedCount).keys()].map(ix => [ix])
+  return (
+    useSingleContractMultipleData(factory, 'getTokenWithId', indices, NEVER_RELOAD)
+      ?.map(({ result }) => result?.[0])
+      ?.filter(x => x) ?? []
+  )
+}
+
 export function useV1TradeLinkIfBetter(
   isExactIn?: boolean,
   input?: Token,

src/hooks/useContract.ts

@@ -2,9 +2,8 @@ import { Contract } from '@ethersproject/contracts'
 import { ChainId } from '@uniswap/sdk'
 import { abi as IUniswapV2PairABI } from '@uniswap/v2-core/build/IUniswapV2Pair.json'
 import { useMemo } from 'react'
-import { V1_FACTORY_ADDRESS } from '../constants'
 import ERC20_ABI from '../constants/abis/erc20.json'
-import IUniswapV1Factory from '../constants/abis/v1_factory.json'
+import { V1_EXCHANGE_ABI, V1_FACTORY_ABI, V1_FACTORY_ADDRESS } from '../constants/v1'
 import { MULTICALL_ABI, MULTICALL_NETWORKS } from '../constants/multicall'
 import { getContract } from '../utils'
 import { useActiveWeb3React } from './index'
@@ -25,7 +24,12 @@ function useContract(address?: string, ABI?: any, withSignerIfPossible = true):
 }
 
 export function useV1FactoryContract(): Contract | null {
-  return useContract(V1_FACTORY_ADDRESS, IUniswapV1Factory, false)
+  const { chainId } = useActiveWeb3React()
+  return useContract(chainId === 1 ? V1_FACTORY_ADDRESS : undefined, V1_FACTORY_ABI, false)
+}
+
+export function useV1ExchangeContract(address: string): Contract | null {
+  return useContract(address, V1_EXCHANGE_ABI, false)
 }
 
 export function useTokenContract(tokenAddress?: string, withSignerIfPossible = true): Contract | null {

src/state/multicall/actions.ts

@@ -30,9 +30,9 @@ export function parseCallKey(callKey: string): Call {
   }
 }
 
-interface ListenerOptions {
+export interface ListenerOptions {
   // how often this data should be fetched, by default 1
-  blocksPerFetch?: number
+  readonly blocksPerFetch?: number
 }
 
 export const addMulticallListeners = createAction<{ chainId: number; calls: Call[]; options?: ListenerOptions }>(

src/state/multicall/hooks.ts

@@ -6,7 +6,14 @@ import { useDispatch, useSelector } from 'react-redux'
 import { useActiveWeb3React } from '../../hooks'
 import { useBlockNumber } from '../application/hooks'
 import { AppDispatch, AppState } from '../index'
-import { addMulticallListeners, Call, removeMulticallListeners, parseCallKey, toCallKey } from './actions'
+import {
+  addMulticallListeners,
+  Call,
+  removeMulticallListeners,
+  parseCallKey,
+  toCallKey,
+  ListenerOptions
+} from './actions'
 
 export interface Result extends ReadonlyArray<any> {
   readonly [key: string]: any
@@ -35,8 +42,13 @@ interface CallResult {
 
 const INVALID_RESULT: CallResult = { valid: false, blockNumber: undefined, data: undefined }
 
+// use this options object
+export const NEVER_RELOAD: ListenerOptions = {
+  blocksPerFetch: Infinity
+}
+
 // the lowest level call for subscribing to contract data
-function useCallsData(calls: (Call | undefined)[]): CallResult[] {
+function useCallsData(calls: (Call | undefined)[], options?: ListenerOptions): CallResult[] {
   const { chainId } = useActiveWeb3React()
   const callResults = useSelector<AppState, AppState['multicall']['callResults']>(state => state.multicall.callResults)
   const dispatch = useDispatch<AppDispatch>()
@@ -60,7 +72,8 @@ function useCallsData(calls: (Call | undefined)[]): CallResult[] {
     dispatch(
       addMulticallListeners({
         chainId,
-        calls
+        calls,
+        options
       })
     )
 
@@ -68,11 +81,12 @@ function useCallsData(calls: (Call | undefined)[]): CallResult[] {
       dispatch(
         removeMulticallListeners({
           chainId,
-          calls
+          calls,
+          options
         })
       )
     }
-  }, [chainId, dispatch, serializedCallKeys])
+  }, [chainId, dispatch, options, serializedCallKeys])
 
   return useMemo(
     () =>
@@ -130,7 +144,8 @@ function toCallState(
 export function useSingleContractMultipleData(
   contract: Contract | null | undefined,
   methodName: string,
-  callInputs: OptionalMethodInputs[]
+  callInputs: OptionalMethodInputs[],
+  options?: ListenerOptions
 ): CallState[] {
   const fragment = useMemo(() => contract?.interface?.getFunction(methodName), [contract, methodName])
 
@@ -147,7 +162,7 @@ export function useSingleContractMultipleData(
     [callInputs, contract, fragment]
   )
 
-  const results = useCallsData(calls)
+  const results = useCallsData(calls, options)
 
   const latestBlockNumber = useBlockNumber()
 
@@ -160,7 +175,8 @@ export function useMultipleContractSingleData(
   addresses: (string | undefined)[],
   contractInterface: Interface,
   methodName: string,
-  callInputs?: OptionalMethodInputs
+  callInputs?: OptionalMethodInputs,
+  options?: ListenerOptions
 ): CallState[] {
   const fragment = useMemo(() => contractInterface.getFunction(methodName), [contractInterface, methodName])
   const callData: string | undefined = useMemo(
@@ -186,7 +202,7 @@ export function useMultipleContractSingleData(
     [addresses, callData, fragment]
   )
 
-  const results = useCallsData(calls)
+  const results = useCallsData(calls, options)
 
   const latestBlockNumber = useBlockNumber()
 
@@ -198,7 +214,8 @@ export function useMultipleContractSingleData(
 export function useSingleCallResult(
   contract: Contract | null | undefined,
   methodName: string,
-  inputs?: OptionalMethodInputs
+  inputs?: OptionalMethodInputs,
+  options?: ListenerOptions
 ): CallState {
   const fragment = useMemo(() => contract?.interface?.getFunction(methodName), [contract, methodName])
 
@@ -213,7 +230,7 @@ export function useSingleCallResult(
       : []
   }, [contract, fragment, inputs])
 
-  const result = useCallsData(calls)[0]
+  const result = useCallsData(calls, options)[0]
   const latestBlockNumber = useBlockNumber()
 
   return useMemo(() => {