Load schema file path from subgraph config (#458)

* Get subgraph schema from config file

* Use default value if schema not given

---------

Co-authored-by: neeraj <neeraj.rtly@gmail.com>

packages/codegen/src/generate-code.ts

@@ -212,7 +212,7 @@ function generateWatcher (visitor: Visitor, contracts: any[], config: any, overW
   // Register the handlebar helpers to be used in the templates.
   registerHandlebarHelpers(config);
 
-  visitor.visitSubgraph(config.subgraphPath);
+  visitor.visitSubgraph(config.subgraphPath, config.subgraphConfig);
 
   outStream = outputDir
     ? fs.createWriteStream(path.join(outputDir, 'src/schema.gql'))

packages/codegen/src/utils/subgraph.ts

@@ -5,8 +5,8 @@ import yaml from 'js-yaml';
 
 import { loadFilesSync } from '@graphql-tools/load-files';
 
-export function parseSubgraphSchema (subgraphPath: string): any {
-  const subgraphSchemaPath = path.join(path.resolve(subgraphPath), '/schema.graphql');
+export function parseSubgraphSchema (subgraphPath: string, subgraphConfig: any): any {
+  const subgraphSchemaPath = path.join(path.resolve(subgraphPath), subgraphConfig.schema?.file ?? './schema.graphql');
 
   assert(fs.existsSync(subgraphSchemaPath), `Schema file not found at ${subgraphSchemaPath}`);
   const typesArray = loadFilesSync(subgraphSchemaPath);

packages/codegen/src/visitor.ts

@@ -180,13 +180,13 @@ export class Visitor {
     });
   }
 
-  visitSubgraph (subgraphPath?: string): void {
-    if (!subgraphPath) {
+  visitSubgraph (subgraphPath?: string, subgraphConfig?: any): void {
+    if (!subgraphPath || !subgraphConfig) {
       return;
     }
 
     // Parse subgraph schema to get subgraphSchemaDocument.
-    const subgraphSchemaDocument = parseSubgraphSchema(subgraphPath);
+    const subgraphSchemaDocument = parseSubgraphSchema(subgraphPath, subgraphConfig);
 
     this._schema.addSubgraphSchema(subgraphSchemaDocument);
     this._types.addSubgraphTypes(subgraphSchemaDocument);