refactor(infra): directory structure (#4615)

packages/backend/server/src/graphql.module.ts

@@ -0,0 +1,41 @@
+import type { ApolloDriverConfig } from '@nestjs/apollo';
+import { ApolloDriver } from '@nestjs/apollo';
+import { Global, Module } from '@nestjs/common';
+import { GraphQLModule } from '@nestjs/graphql';
+import { Request, Response } from 'express';
+import { join } from 'path';
+import { fileURLToPath } from 'url';
+
+import { Config } from './config';
+import { GQLLoggerPlugin } from './graphql/logger-plugin';
+import { Metrics } from './metrics/metrics';
+
+@Global()
+@Module({
+  imports: [
+    GraphQLModule.forRootAsync<ApolloDriverConfig>({
+      driver: ApolloDriver,
+      useFactory: (config: Config, metrics: Metrics) => {
+        return {
+          ...config.graphql,
+          path: `${config.path}/graphql`,
+          csrfPrevention: {
+            requestHeaders: ['content-type'],
+          },
+          autoSchemaFile: join(
+            fileURLToPath(import.meta.url),
+            '..',
+            'schema.gql'
+          ),
+          context: ({ req, res }: { req: Request; res: Response }) => ({
+            req,
+            res,
+          }),
+          plugins: [new GQLLoggerPlugin(metrics)],
+        };
+      },
+      inject: [Config, Metrics],
+    }),
+  ],
+})
+export class GqlModule {}