Add a dedicated GQL server for metadata available on /meta (#1820)

server/src/metadata/field-metadata/field-metadata.service.ts

@@ -0,0 +1,40 @@
+import { Injectable } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+
+import { Repository } from 'typeorm';
+
+import { FieldMetadata } from './field-metadata.entity';
+import { generateColumnName } from './field-metadata.util';
+
+@Injectable()
+export class FieldMetadataService {
+  constructor(
+    @InjectRepository(FieldMetadata, 'metadata')
+    private readonly fieldMetadataRepository: Repository<FieldMetadata>,
+  ) {}
+
+  public async createFieldMetadata(
+    name: string,
+    type: string,
+    objectId: string,
+    workspaceId: string,
+  ): Promise<FieldMetadata> {
+    return await this.fieldMetadataRepository.save({
+      displayName: name,
+      type,
+      objectId,
+      isCustom: true,
+      targetColumnName: generateColumnName(name),
+      workspaceId,
+    });
+  }
+
+  public async getFieldMetadataByNameAndObjectId(
+    name: string,
+    objectId: string,
+  ): Promise<FieldMetadata | null> {
+    return await this.fieldMetadataRepository.findOne({
+      where: { displayName: name, objectId },
+    });
+  }
+}