feat: include resolution tx in request

Author: eccentricexit

schema.graphql

@@ -85,7 +85,7 @@ type Request @entity {
   disputeID: BigInt!
   "The time the dispute was created."
   disputeCreationTime: BigInt!
-  "The address of the party that challenged the request"
+  "The address of the party that challenged the request."
   challenger: Bytes!
   "Tracks each round of a dispute in the form rounds[roundID]."
   rounds: [Round!]! @derivedFrom(field: "request")
@@ -95,10 +95,12 @@ type Request @entity {
   token: Token!
   "The evidences submitted for this request."
   evidences: [Evidence!]! @derivedFrom(field: "request")
-  "The number of evidence submitted"
+  "The number of evidence submitted."
   numberOfEvidences: BigInt!
   "The block this request was created."
   blockNumber: BigInt!
+  "The transaction this request was resolved."
+  resolutionTx: Bytes
 }
 
 type Evidence @entity {

src/mapping.ts

@@ -151,6 +151,7 @@ export function handleTokenStatusChange(event: TokenStatusChange): void {
 
     // Request executed.
     request.resolutionTime = event.block.timestamp;
+    request.resolutionTx = event.transaction.hash;
     request.result = ACCEPTED;
     if (request.type == REGISTRATION_REQUESTED) token.status = REGISTERED;
     else token.status = ABSENT;
@@ -257,6 +258,7 @@ export function handleRuling(event: Ruling): void {
   }
 
   request.resolutionTime = event.block.timestamp;
+  request.resolutionTx = event.transaction.hash;
   token.disputed = false;
   token.appealPeriodStart = BigInt.fromI32(0);
   token.appealPeriodEnd = BigInt.fromI32(0);