feat: refactor custom object (#1887)

* chore: drop old universal entity

* feat: wip refactor graphql generation custom object

* feat: refactor custom object resolvers

fix: tests

fix: import

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

server/src/tenant/tenant.service.ts

@@ -0,0 +1,45 @@
+import { Injectable } from '@nestjs/common';
+
+import { GraphQLSchema } from 'graphql';
+
+import { DataSourceMetadataService } from 'src/metadata/data-source-metadata/data-source-metadata.service';
+import { ObjectMetadataService } from 'src/metadata/object-metadata/object-metadata.service';
+
+import { SchemaBuilderService } from './schema-builder/schema-builder.service';
+
+@Injectable()
+export class TenantService {
+  constructor(
+    private readonly schemaBuilderService: SchemaBuilderService,
+    private readonly dataSourceMetadataService: DataSourceMetadataService,
+    private readonly objectMetadataService: ObjectMetadataService,
+  ) {}
+
+  async createTenantSchema(workspaceId: string | undefined) {
+    if (!workspaceId) {
+      return new GraphQLSchema({});
+    }
+
+    const dataSourcesMetadata =
+      await this.dataSourceMetadataService.getDataSourcesMetadataFromWorkspaceId(
+        workspaceId,
+      );
+
+    // Can'f find any data sources for this workspace
+    if (!dataSourcesMetadata || dataSourcesMetadata.length === 0) {
+      return new GraphQLSchema({});
+    }
+
+    const dataSourceMetadata = dataSourcesMetadata[0];
+
+    const objectMetadata =
+      await this.objectMetadataService.getObjectMetadataFromDataSourceId(
+        dataSourceMetadata.id,
+      );
+
+    return this.schemaBuilderService.generateSchema(
+      workspaceId,
+      objectMetadata,
+    );
+  }
+}