Fix for indexed reference type event arg in moby mask watcher

packages/codegen/src/templates/indexer-template.handlebars

@@ -465,7 +465,7 @@ export class Indexer implements IPLDIndexerInterface {
       case {{capitalize event.name}}_EVENT: {
         eventName = logDescription.name;
         {{#if event.params}}
-        const { {{#each event.params~}} {{this.name}} {{~#unless @last}}, {{/unless}} {{~/each}} } = logDescription.args;
+        const [ {{#each event.params~}} {{this.name}} {{~#unless @last}}, {{/unless}} {{~/each}} ] = logDescription.args;
         {{/if}}
         eventInfo = {
           {{#each event.params}}

packages/moby-mask-watcher/demo.md

@@ -97,6 +97,12 @@
   yarn server
   ```
 
+* Run the job-runner:
+
+  ```bash
+  yarn job-runner
+  ```
+
 * Clone the [MobyMask](https://github.com/vulcanize/MobyMask) repo.
 
 * Checkout to the branch with changes for using this watcher:
@@ -130,6 +136,42 @@
   export MOBY_ADDRESS="<MOBY_ADDRESS>"
   ```
 
+* Run the following GQL mutation in watcher GraphQL endpoint http://127.0.0.1:3010/graphql
+
+  ```graphql
+  mutation {
+    watchContract(
+      address: "MOBY_ADDRESS"
+      kind: "PhisherRegistry"
+      checkpoint: true
+    )
+  }
+  ```
+
+* Run the following GQL subscription in generated watcher GraphQL endpoint:
+
+  ```graphql
+  subscription {
+    onEvent {
+      event {
+        __typename
+        ... on PhisherStatusUpdatedEvent {
+          entity
+          isPhisher
+        },
+        ... on MemberStatusUpdatedEvent {
+          entity
+          isMember
+        }
+      },
+      block {
+        number
+        hash
+      }
+    }
+  }
+  ```
+
 * Update isPhiser and isMember lists with names
 
   ```bash
@@ -140,6 +182,8 @@
   yarn claimMember --contract $MOBY_ADDRESS --name memberName
   ```
 
+* The events should be visible in the subscription at GQL endpoint.
+
 * Check the names in the watcher GraphQL playground http://localhost:3010/graphql
 
   * Get the latest block

packages/moby-mask-watcher/src/indexer.ts

@@ -577,7 +577,7 @@ export class Indexer implements IPLDIndexerInterface {
     switch (logDescription.name) {
       case DELEGATIONTRIGGERED_EVENT: {
         eventName = logDescription.name;
-        const { principal, agent } = logDescription.args;
+        const [principal, agent] = logDescription.args;
         eventInfo = {
           principal,
           agent
@@ -587,9 +587,10 @@ export class Indexer implements IPLDIndexerInterface {
       }
       case MEMBERSTATUSUPDATED_EVENT: {
         eventName = logDescription.name;
-        const { entity, isMember } = logDescription.args;
+        const [entity, isMember] = logDescription.args;
         eventInfo = {
-          entity,
+          // Indexed reference type arg
+          entity: entity.hash,
           isMember
         };
 
@@ -597,7 +598,7 @@ export class Indexer implements IPLDIndexerInterface {
       }
       case OWNERSHIPTRANSFERRED_EVENT: {
         eventName = logDescription.name;
-        const { previousOwner, newOwner } = logDescription.args;
+        const [previousOwner, newOwner] = logDescription.args;
         eventInfo = {
           previousOwner,
           newOwner
@@ -607,9 +608,10 @@ export class Indexer implements IPLDIndexerInterface {
       }
       case PHISHERSTATUSUPDATED_EVENT: {
         eventName = logDescription.name;
-        const { entity, isPhisher } = logDescription.args;
+        const [entity, isPhisher] = logDescription.args;
         eventInfo = {
-          entity,
+          // Indexed reference type arg
+          entity: entity.hash,
           isPhisher
         };