subgraph mapping for universal recipient registry

subgraph/schema.graphql

@@ -108,6 +108,7 @@ type Recipient @entity {
   deposit: BigInt
   recipientAddress: Bytes
   recipientMetadata: String
+  recipientMetadataId: String
   rejected: Boolean
   verified: Boolean
   voteOptionIndex: BigInt

subgraph/src/UniversalRecipientRegistryMapping.ts

@@ -0,0 +1,53 @@
+import { BigInt, log } from '@graphprotocol/graph-ts'
+import {
+  OwnershipTransferred,
+  RequestResolved,
+  RequestSubmitted,
+} from '../generated/UniversalRecipientRegistry/UniversalRecipientRegistry'
+
+import { Recipient } from '../generated/schema'
+
+export function handleOwnershipTransferred(event: OwnershipTransferred): void {
+  log.info('handleOwnershipTransferred - universal recipient registry', [])
+}
+
+export function handleRequestResolved(event: RequestResolved): void {
+  let recipientRegistryId = event.address.toHexString()
+
+  log.info('handleRequestResolved', [])
+  let recipientId = event.params._recipientId.toHexString()
+  let recipient = new Recipient(recipientId)
+
+  recipient.requestType = BigInt.fromI32(event.params._type).toString()
+  recipient.requester = event.transaction.from.toHexString()
+  recipient.submissionTime = event.params._timestamp.toString()
+  recipient.rejected = event.params._rejected
+  recipient.verified = !event.params._rejected
+  recipient.recipientRegistry = recipientRegistryId
+  recipient.recipientIndex = event.params._recipientIndex
+  recipient.requestResolvedHash = event.transaction.hash
+
+  recipient.save()
+}
+
+export function handleRequestSubmitted(event: RequestSubmitted): void {
+  log.info('handleRequestSubmitted', [])
+  let recipientRegistryId = event.address.toHexString()
+
+  //TODO: create RecipientRegistry entity here if it does not exist.
+
+  let recipientId = event.params._recipientId.toHexString()
+  let recipient = new Recipient(recipientId)
+
+  recipient.recipientRegistry = recipientRegistryId
+  recipient.recipientAddress = event.params._recipient
+  recipient.recipientMetadataId = event.params._metadataId
+  recipient.requestType = BigInt.fromI32(event.params._type).toString()
+  recipient.requester = event.transaction.from.toHexString()
+  recipient.submissionTime = event.params._timestamp.toString()
+  recipient.deposit = event.transaction.value
+  recipient.verified = false
+  recipient.requestSubmittedHash = event.transaction.hash
+
+  recipient.save()
+}