fix liquidity (#383)

* fix liquidity

* fix lint

Author: mihaisc

package-lock.json

@@ -23,7 +23,8 @@ import {
   getPoolShare,
   getPoolSnapshot,
   getPoolLpSwapFee,
-  getPoolPublisherMarketFee
+  getPoolPublisherMarketFee,
+  getBalance
 } from './utils/poolUtils'
 import { getToken } from './utils/tokenUtils'
 import { getUser } from './utils/userUtils'
@@ -122,16 +123,23 @@ export function handleSwap(event: LOG_SWAP): void {
     event.params.tokenAmountOut.toBigDecimal(),
     tokenOut.decimals
   )
+
+  const tokenOutNewBalance = getBalance(
+    event.address,
+    event.params.tokenOut,
+    tokenOut.decimals
+  )
+
   if (tokenOut.isDatatoken) {
     poolTx.datatoken = tokenOut.id
     poolTx.datatokenValue = ammountOut.neg()
 
-    pool.datatokenLiquidity = pool.datatokenLiquidity.minus(ammountOut)
+    pool.datatokenLiquidity = tokenOutNewBalance
   } else {
     poolTx.baseToken = tokenOut.id
     poolTx.baseTokenValue = ammountOut.neg()
 
-    pool.baseTokenLiquidity = pool.baseTokenLiquidity.minus(ammountOut)
+    pool.baseTokenLiquidity = tokenOutNewBalance
     poolSnapshot.swapVolume = poolSnapshot.swapVolume.plus(ammountOut)
 
     addPoolSwap(tokenOut.id, ammountOut)
@@ -144,18 +152,21 @@ export function handleSwap(event: LOG_SWAP): void {
     event.params.tokenAmountIn.toBigDecimal(),
     tokenIn.decimals
   )
+  const tokenInNewBalance = getBalance(
+    event.address,
+    event.params.tokenIn,
+    tokenIn.decimals
+  )
   if (tokenIn.isDatatoken) {
     poolTx.datatoken = tokenIn.id
     poolTx.datatokenValue = ammountIn
 
-    pool.datatokenLiquidity = pool.datatokenLiquidity.plus(ammountIn)
+    pool.datatokenLiquidity = tokenInNewBalance
   } else {
     poolTx.baseToken = tokenIn.id
     poolTx.baseTokenValue = ammountIn
-
-    pool.baseTokenLiquidity = pool.baseTokenLiquidity.plus(ammountIn)
+    pool.baseTokenLiquidity = tokenInNewBalance
     poolSnapshot.swapVolume = poolSnapshot.swapVolume.plus(ammountIn)
-
     addLiquidity(tokenIn.id, ammountIn)
     addPoolSwap(tokenIn.id, ammountIn)
   }

src/mappings/pool.ts

@@ -141,3 +141,14 @@ export function getPoolPublisherMarketFee(poolAddress: Address): BigDecimal {
   const marketFee = weiToDecimal(marketFeeWei.toBigDecimal(), 18)
   return marketFee
 }
+
+export function getBalance(
+  poolAddress: Address,
+  tokenAddress: Address,
+  tokenDecimals: i32
+): BigDecimal {
+  const contract = BPool.bind(poolAddress)
+  const balanceWei = contract.getBalance(tokenAddress)
+  const balance = weiToDecimal(balanceWei.toBigDecimal(), tokenDecimals)
+  return balance
+}

src/mappings/utils/poolUtils.ts

@@ -8,9 +8,9 @@ dataSources:
     name: ERC721Factory
     network: rinkeby
     source:
-      address: '0x1b1FE18bE79249AE8A30b3cEef03d70ca299a75b'
+      address: '0x548fd8639eC4Add192f12FC5c3EF6Dd80e1634ce'
       abi: ERC721Factory
-      startBlock: 10182337
+      startBlock: 10364536
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6
@@ -33,9 +33,9 @@ dataSources:
     name: FactoryRouter
     network: rinkeby
     source:
-      address: '0x6CE85a8B9dF0aEbd6deE3593d4E9cde7398ff842'
+      address: '0xfe1a9F07718b40071F4c8d0f4bA22121dD5C0559'
       abi: FactoryRouter
-      startBlock: 10182337
+      startBlock: 10364536
     mapping:
       kind: ethereum/events
       apiVersion: 0.0.6