feat: allowing to query holders of certain fungible module

indexer/src/kadena-server/config/graphql-types.ts

@@ -29,6 +29,7 @@ export type Scalars = {
 
 export type BalanceNode = {
   __typename?: 'BalanceNode';
+  accountName: Scalars['String']['output'];
   balance: Scalars['String']['output'];
   chainId: Scalars['String']['output'];
   module: Scalars['String']['output'];
@@ -807,7 +808,7 @@ export type Query = {
 };
 
 export type QueryBalanceArgs = {
-  accountName: Scalars['String']['input'];
+  accountName?: InputMaybe<Scalars['String']['input']>;
   after?: InputMaybe<Scalars['String']['input']>;
   before?: InputMaybe<Scalars['String']['input']>;
   chainIds?: InputMaybe<Array<Scalars['String']['input']>>;
@@ -2171,6 +2172,7 @@ export type BalanceNodeResolvers<
   ContextType = any,
   ParentType extends ResolversParentTypes['BalanceNode'] = ResolversParentTypes['BalanceNode'],
 > = {
+  accountName?: Resolver<ResolversTypes['String'], ParentType, ContextType>;
   balance?: Resolver<ResolversTypes['String'], ParentType, ContextType>;
   chainId?: Resolver<ResolversTypes['String'], ParentType, ContextType>;
   module?: Resolver<ResolversTypes['String'], ParentType, ContextType>;
@@ -2972,7 +2974,7 @@ export type QueryResolvers<
     ResolversTypes['QueryBalanceConnection'],
     ParentType,
     ContextType,
-    RequireFields<QueryBalanceArgs, 'accountName'>
+    Partial<QueryBalanceArgs>
   >;
   block?: Resolver<
     Maybe<ResolversTypes['Block']>,

indexer/src/kadena-server/config/schema.graphql

@@ -124,7 +124,7 @@ type Query {
   Retrieve live balances for a given account with optional filtering by chains and module. Default page size is 20.
   """
   balance(
-    accountName: String!
+    accountName: String
     chainIds: [String!]
     module: String
     after: String
@@ -478,6 +478,7 @@ type QueryBalanceConnectionEdge {
 }
 
 type BalanceNode {
+  accountName: String!
   module: String!
   chainId: String!
   balance: String!

indexer/src/kadena-server/repository/application/balance-repository.ts

@@ -99,7 +99,7 @@ export interface GetTokensParams extends PaginationsParams {}
  * Parameters for fetching account balances with pagination and filters.
  */
 export interface GetAccountBalancesParams extends PaginationsParams {
-  accountName: string;
+  accountName?: string | null;
   chainIds?: string[] | null;
   module?: string | null;
 }
@@ -168,7 +168,12 @@ export default interface BalanceRepository {
    */
   getAccountBalances(params: GetAccountBalancesParams): Promise<{
     pageInfo: PageInfo;
-    edges: ConnectionEdge<{ module: string; chainId: string; balance: string }>[];
+    edges: ConnectionEdge<{
+      accountName: string;
+      module: string;
+      chainId: string;
+      balance: string;
+    }>[];
   }>;
 
   /**

indexer/src/kadena-server/repository/infra/repository/balance-db-repository.ts

@@ -471,7 +471,7 @@ export default class BalanceDbRepository implements BalanceRepository {
    * Retrieves live balances for an account with optional module and chain filters, paginated.
    */
   async getAccountBalances(params: {
-    accountName: string;
+    accountName?: string | null;
     chainIds?: string[] | null;
     module?: string | null;
     after?: string | null;
@@ -481,37 +481,83 @@ export default class BalanceDbRepository implements BalanceRepository {
   }) {
     const { accountName, chainIds, module } = params;
     const { limit, order, after, before } = getPaginationParams(params);
+    let queryParams: any[] = [];
+    let query = '';
 
-    const queryParams: any[] = [accountName, limit];
-    let conditions = 'WHERE b.account = $1';
-
-    if (module) {
-      queryParams.push(module);
-      conditions += ` AND b.module = $${queryParams.length}`;
-    }
-
-    if (chainIds && chainIds.length) {
-      queryParams.push(chainIds);
-      conditions += ` AND b."chainId" = ANY($${queryParams.length})`;
-    }
-
-    if (after) {
-      queryParams.push(after);
-      conditions += ` AND b.id < $${queryParams.length}`;
-    }
-
-    if (before) {
-      queryParams.push(before);
-      conditions += ` AND b.id > $${queryParams.length}`;
-    }
+    if (accountName) {
+      // Original behavior: filter by account, optionally by module and chains
+      queryParams = [accountName, limit];
+      let conditions = 'WHERE b.account = $1';
+
+      if (module) {
+        queryParams.push(module);
+        conditions += ` AND b.module = $${queryParams.length}`;
+      }
+
+      if (chainIds && chainIds.length) {
+        queryParams.push(chainIds);
+        conditions += ` AND b."chainId" = ANY($${queryParams.length})`;
+      }
+
+      if (after) {
+        queryParams.push(after);
+        conditions += ` AND b.id < $${queryParams.length}`;
+      }
+
+      if (before) {
+        queryParams.push(before);
+        conditions += ` AND b.id > $${queryParams.length}`;
+      }
+
+      // If module specified, return at most one row per chain (latest by id)
+      if (module) {
+        query = `
+          WITH ranked AS (
+            SELECT b.id, b."chainId", b.module, b.account,
+                   ROW_NUMBER() OVER (PARTITION BY b."chainId" ORDER BY b.id DESC) AS rn
+            FROM "Balances" b
+            ${conditions}
+          )
+          SELECT id, "chainId", module, account
+          FROM ranked
+          WHERE rn = 1
+          ORDER BY id ${order}
+          LIMIT $2
+        `;
+      } else {
+        query = `
+          SELECT b.id, b."chainId", b.module, b.account
+          FROM "Balances" b
+          ${conditions}
+          ORDER BY b.id ${order}
+          LIMIT $2
+        `;
+      }
+    } else {
+      // Holders mode: require module; get latest per (account, chainId)
+      // Build conditions starting with module filter
+      queryParams = [module, limit];
+      let conditions = 'WHERE b.module = $1';
+
+      if (chainIds && chainIds.length) {
+        queryParams.push(chainIds);
+        conditions += ` AND b."chainId" = ANY($${queryParams.length})`;
+      }
+
+      if (after) {
+        queryParams.push(after);
+        conditions += ` AND b.id < $${queryParams.length}`;
+      }
+
+      if (before) {
+        queryParams.push(before);
+        conditions += ` AND b.id > $${queryParams.length}`;
+      }
 
-    // If module specified, return at most one row per chain (latest by id)
-    let query = '';
-    if (module) {
       query = `
         WITH ranked AS (
           SELECT b.id, b."chainId", b.module, b.account,
-                 ROW_NUMBER() OVER (PARTITION BY b."chainId" ORDER BY b.id DESC) AS rn
+                 ROW_NUMBER() OVER (PARTITION BY b.account, b."chainId" ORDER BY b.id DESC) AS rn
           FROM "Balances" b
           ${conditions}
         )
@@ -521,15 +567,6 @@ export default class BalanceDbRepository implements BalanceRepository {
         ORDER BY id ${order}
         LIMIT $2
       `;
-    } else {
-      // Without module, allow multiple modules per chain
-      query = `
-        SELECT b.id, b."chainId", b.module, b.account
-        FROM "Balances" b
-        ${conditions}
-        ORDER BY b.id ${order}
-        LIMIT $2
-      `;
     }
 
     const { rows } = await rootPgPool.query(query, queryParams);
@@ -543,7 +580,12 @@ export default class BalanceDbRepository implements BalanceRepository {
       const balance = formatBalance_NODE(res).toString();
       return {
         cursor: row.id.toString(),
-        node: { module: row.module, chainId: String(row.chainId), balance },
+        node: {
+          accountName: row.account,
+          module: row.module,
+          chainId: String(row.chainId),
+          balance,
+        },
       };
     });
 

indexer/src/kadena-server/resolvers/query/balance-query-resolver.ts

@@ -7,6 +7,9 @@ export const balanceQueryResolver: QueryResolvers<ResolverContext>['balance'] =
   context,
 ) => {
   const { accountName, chainIds, module, after, before, first, last } = args;
+  if (!accountName && !module) {
+    throw new Error('Either accountName or module must be provided.');
+  }
   const output = await context.balanceRepository.getAccountBalances({
     accountName,
     chainIds: chainIds ?? null,