feat: add polygon and xdai chains when pulling DAO membership

This uses two new subgraphs to pull DAO memberships for Ethereum, xDai,
and Polygon mainnets. The pulls are in parallel. The underlying data is
structured the same way but seems to be missing some information, see
HausDAO/daohaus-supergraph#44

packages/backend/src/config.ts

@@ -2,6 +2,8 @@ interface IConfig {
   port: number;
   graphqlURL: string;
   daoHausGraphqlURL: string;
+  daoHausPolygonGraphqlURL: string;
+  daoHausXdaiGraphqlURL: string;
   seedGraphqlURL: string;
   githubApiToken: string;
   adminKey: string;
@@ -44,6 +46,14 @@ export const CONFIG: IConfig = {
     process.env.DAOHAUS_GRAPHQL_URL,
     'https://api.thegraph.com/subgraphs/name/odyssy-automaton/daohaus',
   ),
+  daoHausPolygonGraphqlURL: parseEnv(
+    process.env.DAOUHAUS_POLYGON_GRAPHQL_URL,
+    'https://api.thegraph.com/subgraphs/name/odyssy-automaton/daohaus-matic',
+  ),
+  daoHausXdaiGraphqlURL: parseEnv(
+    process.env.DAOUHAUS_XDAI_GRAPHQL_URL,
+    'https://api.thegraph.com/subgraphs/name/odyssy-automaton/daohaus-xdai',
+  ),
   adminKey: parseEnv(
     process.env.HASURA_GRAPHQL_ADMIN_SECRET,
     'metagame_secret',

packages/backend/src/handlers/remote-schemas/resolvers/daohaus/resolver.ts

@@ -1,12 +1,37 @@
-import { daoHausClient } from '../../../../lib/daoHausClient';
-import { QueryResolvers } from '../../autogen/types';
+import { clientFactory } from '../../../../lib/daoHausClient';
+import { Member, QueryResolvers } from '../../autogen/types';
+
+const addChain = (memberAddress: string) => async (chain: string) => {
+  const client = clientFactory(chain);
+  const members = <Member[]>(
+    (await client.GetDaoHausMemberships({ memberAddress })).members
+  );
+
+  return members.map((member: Member) => {
+    const updatedMember: Member = { ...member };
+    updatedMember.moloch.chain = chain;
+    return updatedMember;
+  });
+};
 
 export const getDaoHausMemberships: QueryResolvers['getDaoHausMemberships'] = async (
   _,
   { memberAddress },
 ) => {
   if (!memberAddress) return [];
-  const res = await daoHausClient.GetDaoHausMemberships({ memberAddress });
 
-  return res.members;
+  const membershipsOn = addChain(memberAddress);
+
+  const res = await Promise.all([
+    membershipsOn('ethereum'),
+    membershipsOn('polygon'),
+    membershipsOn('xdai'),
+  ]);
+
+  const members: Member[] = res.reduce(
+    (allMembers, networkMembers) => [...allMembers, ...networkMembers],
+    <Member[]>[],
+  );
+
+  return members;
 };

packages/backend/src/handlers/remote-schemas/typeDefs.ts

@@ -43,6 +43,7 @@ export const typeDefs = gql`
     version: String
     totalShares: String!
     totalLoot: String!
+    chain: String!
   }
 
   type Member {

packages/backend/src/lib/daoHausClient.ts

@@ -1,8 +1,15 @@
 import { GraphQLClient } from 'graphql-request';
 
 import { CONFIG } from '../config';
-import { getSdk } from './autogen/daohaus-sdk';
+import { getSdk, Sdk } from './autogen/daohaus-sdk';
 
-export const daoHausClient = getSdk(
-  new GraphQLClient(CONFIG.daoHausGraphqlURL),
-);
+export function clientFactory(chain: string): Sdk {
+  switch (chain) {
+    case 'polygon':
+      return getSdk(new GraphQLClient(CONFIG.daoHausPolygonGraphqlURL));
+    case 'xdai':
+      return getSdk(new GraphQLClient(CONFIG.daoHausXdaiGraphqlURL));
+    default:
+      return getSdk(new GraphQLClient(CONFIG.daoHausGraphqlURL));
+  }
+}

schema.graphql

@@ -2096,6 +2096,7 @@ type Member {
 }
 
 type Moloch {
+  chain: String!
   id: ID!
   summoner: String!
   title: String