Add identifier fields to ObjectMetadata (#2616)

* Add indentifier fields to ObjectMetadata

* Add indentifier fields to ObjectMetadata

* Add indentifier fields to ObjectMetadata

* temporarily block name/label edition

server/src/metadata/field-metadata/hooks/before-update-one-field.hook.ts

@@ -0,0 +1,57 @@
+import {
+  BadRequestException,
+  Injectable,
+  UnauthorizedException,
+} from '@nestjs/common';
+
+import {
+  BeforeUpdateOneHook,
+  UpdateOneInputType,
+} from '@ptc-org/nestjs-query-graphql';
+
+import { UpdateFieldInput } from 'src/metadata/field-metadata/dtos/update-field.input';
+import { FieldMetadataService } from 'src/metadata/field-metadata/field-metadata.service';
+
+@Injectable()
+export class BeforeUpdateOneField<T extends UpdateFieldInput>
+  implements BeforeUpdateOneHook<T, any>
+{
+  constructor(readonly fieldMetadataService: FieldMetadataService) {}
+
+  // TODO: this logic could be moved to a policy guard
+  async run(
+    instance: UpdateOneInputType<T>,
+    context: any,
+  ): Promise<UpdateOneInputType<T>> {
+    const workspaceId = context?.req?.user?.workspace?.id;
+
+    if (!workspaceId) {
+      throw new UnauthorizedException();
+    }
+
+    const fieldMetadata =
+      await this.fieldMetadataService.findOneWithinWorkspace(
+        instance.id.toString(),
+        workspaceId,
+      );
+
+    if (!fieldMetadata) {
+      throw new BadRequestException('Field does not exist');
+    }
+
+    if (!fieldMetadata.isCustom) {
+      throw new BadRequestException("Standard Fields can't be updated");
+    }
+
+    this.checkIfFieldIsEditable(instance.update);
+
+    return instance;
+  }
+
+  // This is temporary until we properly use the MigrationRunner to update column names
+  private checkIfFieldIsEditable(update: UpdateFieldInput) {
+    if (update.name || update.label) {
+      throw new BadRequestException("Field's name and label can't be updated");
+    }
+  }
+}