feat(subgraph): use numberOfChoices to model the length of arrays

Author: alcercu

subgraph/src/DisputeKitClassic.ts

@@ -29,7 +29,8 @@ export const DISPUTEKIT_ID = "1";
 export function handleDisputeCreation(event: DisputeCreation): void {
   const disputeID = event.params._coreDisputeID.toString();
   createClassicDisputeFromEvent(event);
-  createClassicRound(disputeID, ZERO);
+  const numberOfChoices = event.params._numberOfChoices;
+  createClassicRound(disputeID, numberOfChoices, ZERO);
 }
 
 export function handleEvidenceEvent(event: EvidenceEvent): void {
@@ -88,7 +89,8 @@ export function handleChoiceFunded(event: ChoiceFunded): void {
     );
     if (!localDispute) return;
     const newRoundIndex = localDispute.currentLocalRoundIndex.plus(ONE);
-    createClassicRound(coreDisputeID, newRoundIndex);
+    const numberOfChoices = localDispute.numberOfChoices;
+    createClassicRound(coreDisputeID, numberOfChoices, newRoundIndex);
   }
 
   localRound.save();

subgraph/src/entities/ClassicRound.ts

@@ -1,23 +1,25 @@
 import { BigInt } from "@graphprotocol/graph-ts";
 import { Contribution } from "../../generated/DisputeKitClassic/DisputeKitClassic";
 import { ClassicRound } from "../../generated/schema";
-import { ZERO } from "../utils";
+import { ONE, ZERO } from "../utils";
 
 export function createClassicRound(
   disputeID: string,
+  numberOfChoices: BigInt,
   roundIndex: BigInt
 ): void {
+  const choicesLength = numberOfChoices.plus(ONE);
   const localDisputeID = `1-${disputeID}`;
   const id = `${localDisputeID}-${roundIndex.toString()}`;
   const classicRound = new ClassicRound(id);
   classicRound.localDispute = localDisputeID;
   classicRound.votes = [];
   classicRound.winningChoice = ZERO;
-  classicRound.counts = [];
+  classicRound.counts = new Array<BigInt>(choicesLength.toI32()).fill(ZERO);
   classicRound.tied = true;
   classicRound.totalVoted = ZERO;
   classicRound.totalCommited = ZERO;
-  classicRound.paidFees = [];
+  classicRound.paidFees = new Array<BigInt>(choicesLength.toI32()).fill(ZERO);
   classicRound.feeRewards = ZERO;
   classicRound.fundedChoices = [];
   classicRound.save();