switch amount from wei to numeric (#666)

Author: alexcos20

schema.graphql

@@ -467,7 +467,7 @@ type VeDelegation @entity {
   delegator: VeOCEAN!
   receiver: VeOCEAN!
   tokenId: BigInt!
-  amount: BigInt!
+  amount: BigDecimal!
   cancelTime: BigInt!
   expireTime: BigInt!
   updates: [VeDelegationUpdate!] @derivedFrom(field: "veDelegation")
@@ -481,7 +481,7 @@ type VeDelegationUpdate @entity {
   timestamp: Int!
   tx: String!
   sender: String!
-  amount: BigInt!
+  amount: BigDecimal!
   cancelTime: BigInt!
   expireTime: BigInt!
   "type: CREATE_BOOST = 0, EXTEND_BOOST = 1, BURN_BOOST = 2"

src/mappings/utils/veUtils.ts

@@ -133,7 +133,7 @@ export function getveDelegation(
     veDelegation.cancelTime = BigInt.zero()
     veDelegation.expireTime = BigInt.zero()
     veDelegation.tokenId = BigInt.zero()
-    veDelegation.amount = BigInt.zero()
+    veDelegation.amount = BigDecimal.zero()
     veDelegation.receiver = ''
     veDelegation.delegator = ''
     veDelegation.save()

src/mappings/veDelegation.ts

@@ -1,11 +1,12 @@
-import { BigInt } from '@graphprotocol/graph-ts'
+import { BigDecimal, BigInt } from '@graphprotocol/graph-ts'
 import { VeDelegationUpdate } from '../@types/schema'
 import {
   BurnBoost,
   DelegateBoost,
   ExtendBoost,
   TransferBoost
 } from '../@types/veDelegation/veDelegation'
+import { weiToDecimal } from './utils/generic'
 import { getveDelegation, getveOCEAN } from './utils/veUtils'
 
 export function handleDelegation(event: DelegateBoost): void {
@@ -23,7 +24,10 @@ export function handleDelegation(event: DelegateBoost): void {
   veDelegation.delegator = _delegator
   veDelegation.receiver = _receiver
   veDelegation.tokenId = _tokenId
-  veDelegation.amount = _amount
+  veDelegation.amount = weiToDecimal(
+    _amount.toBigDecimal(),
+    BigInt.fromI32(18).toI32()
+  )
   veDelegation.cancelTime = _cancelTime
   veDelegation.expireTime = _expireTime
   veDelegation.save()
@@ -36,7 +40,7 @@ export function handleDelegation(event: DelegateBoost): void {
   veDelegationUpdate.block = event.block.number.toI32()
   veDelegationUpdate.timestamp = event.block.timestamp.toI32()
   veDelegationUpdate.tx = event.transaction.hash.toHex()
-  veDelegationUpdate.amount = _amount
+  veDelegationUpdate.amount = veDelegation.amount
   veDelegationUpdate.cancelTime = _cancelTime
   veDelegationUpdate.expireTime = _expireTime
   veDelegationUpdate.sender = event.transaction.from.toHex()
@@ -59,7 +63,10 @@ export function handleExtendBoost(event: ExtendBoost): void {
   veDelegation.delegator = _delegator
   veDelegation.receiver = _receiver
   veDelegation.tokenId = _tokenId
-  veDelegation.amount = _amount
+  veDelegation.amount = weiToDecimal(
+    _amount.toBigDecimal(),
+    BigInt.fromI32(18).toI32()
+  )
   veDelegation.cancelTime = _cancelTime
   veDelegation.expireTime = _expireTime
   veDelegation.save()
@@ -72,7 +79,7 @@ export function handleExtendBoost(event: ExtendBoost): void {
   veDelegationUpdate.block = event.block.number.toI32()
   veDelegationUpdate.timestamp = event.block.timestamp.toI32()
   veDelegationUpdate.tx = event.transaction.hash.toHex()
-  veDelegationUpdate.amount = _amount
+  veDelegationUpdate.amount = veDelegation.amount
   veDelegationUpdate.cancelTime = _cancelTime
   veDelegationUpdate.expireTime = _expireTime
   veDelegationUpdate.sender = event.transaction.from.toHex()
@@ -93,7 +100,7 @@ export function handleBurnBoost(event: BurnBoost): void {
 
   // delete
   const veDelegation = getveDelegation(event.address, _tokenId.toHex())
-  veDelegation.amount = BigInt.zero()
+  veDelegation.amount = BigDecimal.zero()
   veDelegation.save()
 
   const veDelegationUpdate = new VeDelegationUpdate(

test/integration/VeOcean.test.ts

@@ -790,7 +790,7 @@ describe('veOcean tests', async () => {
       'Invalid expireTime'
     )
     assert(
-      delegations[0].updates[0].amount ==
+      web3.utils.toWei(delegations[0].updates[0].amount) ==
         tx3.events.DelegateBoost.returnValues._amount,
       'Invalid amount'
     )
@@ -810,7 +810,7 @@ describe('veOcean tests', async () => {
       'Invalid expireTime for extend boost'
     )
     assert(
-      delegations[0].updates[1].amount ==
+      web3.utils.toWei(delegations[0].updates[1].amount) ==
         tx4.events.ExtendBoost.returnValues._amount,
       'Invalid amount for extend boost'
     )