fix workspace-member deletion with existing attachments/documents (#5232)

## Context
We have a non-nullable constraint on authorId in attachments and
documents, until we have soft-deletion we need to handle deletion of
workspace-members and their attachments/documents.
This PR introduces pre-hooks to deleteOne/deleteMany
This is called when a user deletes a workspace-member from the members
page

Next: needs to be done on user level as well. This is called when users
try to delete their own accounts. I've seen other issues such as
re-creating a user with a previously used email failing.

packages/twenty-server/src/engine/api/graphql/workspace-query-runner/workspace-pre-query-hook/workspace-pre-query-hook.config.ts

@@ -6,6 +6,8 @@ import { CalendarEventFindOnePreQueryHook } from 'src/modules/calendar/query-hoo
 import { BlocklistCreateManyPreQueryHook } from 'src/modules/connected-account/query-hooks/blocklist/blocklist-create-many.pre-query.hook';
 import { BlocklistUpdateManyPreQueryHook } from 'src/modules/connected-account/query-hooks/blocklist/blocklist-update-many.pre-query.hook';
 import { BlocklistUpdateOnePreQueryHook } from 'src/modules/connected-account/query-hooks/blocklist/blocklist-update-one.pre-query.hook';
+import { WorkspaceMemberDeleteOnePreQueryHook } from 'src/modules/workspace-member/query-hooks/workspace-member-delete-one.pre-query.hook';
+import { WorkspaceMemberDeleteManyPreQueryHook } from 'src/modules/workspace-member/query-hooks/workspace-member-delete-many.pre-query.hook';
 
 // TODO: move to a decorator
 export const workspacePreQueryHooks: WorkspaceQueryHook = {
@@ -22,4 +24,8 @@ export const workspacePreQueryHooks: WorkspaceQueryHook = {
     updateMany: [BlocklistUpdateManyPreQueryHook.name],
     updateOne: [BlocklistUpdateOnePreQueryHook.name],
   },
+  workspaceMember: {
+    deleteOne: [WorkspaceMemberDeleteOnePreQueryHook.name],
+    deleteMany: [WorkspaceMemberDeleteManyPreQueryHook.name],
+  },
 };

packages/twenty-server/src/engine/api/graphql/workspace-query-runner/workspace-pre-query-hook/workspace-pre-query-hook.module.ts

@@ -4,12 +4,14 @@ import { MessagingQueryHookModule } from 'src/modules/messaging/query-hooks/mess
 import { WorkspacePreQueryHookService } from 'src/engine/api/graphql/workspace-query-runner/workspace-pre-query-hook/workspace-pre-query-hook.service';
 import { CalendarQueryHookModule } from 'src/modules/calendar/query-hooks/calendar-query-hook.module';
 import { ConnectedAccountQueryHookModule } from 'src/modules/connected-account/query-hooks/connected-account-query-hook.module';
+import { WorkspaceMemberQueryHookModule } from 'src/modules/workspace-member/query-hooks/workspace-member-query-hook.module';
 
 @Module({
   imports: [
     MessagingQueryHookModule,
     CalendarQueryHookModule,
     ConnectedAccountQueryHookModule,
+    WorkspaceMemberQueryHookModule,
   ],
   providers: [WorkspacePreQueryHookService],
   exports: [WorkspacePreQueryHookService],

packages/twenty-server/src/engine/api/graphql/workspace-query-runner/workspace-query-runner.service.ts

@@ -436,6 +436,14 @@ export class WorkspaceQueryRunnerService {
       atMost: maximumRecordAffected,
     });
 
+    await this.workspacePreQueryHookService.executePreHooks(
+      userId,
+      workspaceId,
+      objectMetadataItem.nameSingular,
+      'deleteMany',
+      args,
+    );
+
     const result = await this.execute(query, workspaceId);
 
     const parsedResults = (
@@ -495,6 +503,14 @@ export class WorkspaceQueryRunnerService {
     );
     // TODO END
 
+    await this.workspacePreQueryHookService.executePreHooks(
+      userId,
+      workspaceId,
+      objectMetadataItem.nameSingular,
+      'deleteOne',
+      args,
+    );
+
     const result = await this.execute(query, workspaceId);
 
     const parsedResults = (

packages/twenty-server/src/engine/object-metadata-repository/metadata-to-repository.mapping.ts

@@ -14,6 +14,8 @@ import { MessageThreadRepository } from 'src/modules/messaging/repositories/mess
 import { MessageRepository } from 'src/modules/messaging/repositories/message.repository';
 import { PersonRepository } from 'src/modules/person/repositories/person.repository';
 import { WorkspaceMemberRepository } from 'src/modules/workspace-member/repositories/workspace-member.repository';
+import { AttachmentRepository } from 'src/modules/attachment/repositories/attachment.repository';
+import { CommentRepository } from 'src/modules/activity/repositories/comment.repository';
 
 export const metadataToRepositoryMapping = {
   AuditLogObjectMetadata: AuditLogRepository,
@@ -34,4 +36,6 @@ export const metadataToRepositoryMapping = {
   PersonObjectMetadata: PersonRepository,
   TimelineActivityObjectMetadata: TimelineActivityRepository,
   WorkspaceMemberObjectMetadata: WorkspaceMemberRepository,
+  AttachmentObjectMetadata: AttachmentRepository,
+  CommentObjectMetadata: CommentRepository,
 };

packages/twenty-server/src/engine/utils/global-exception-handler.util.ts

@@ -9,6 +9,7 @@ import {
   ValidationError,
   NotFoundError,
   ConflictError,
+  MethodNotAllowedError,
 } from 'src/engine/utils/graphql-errors.util';
 import { ExceptionHandlerService } from 'src/engine/integrations/exception-handler/exception-handler.service';
 
@@ -17,6 +18,7 @@ const graphQLPredefinedExceptions = {
   401: AuthenticationError,
   403: ForbiddenError,
   404: NotFoundError,
+  405: MethodNotAllowedError,
   409: ConflictError,
 };
 

packages/twenty-server/src/engine/utils/graphql-errors.util.ts

@@ -142,6 +142,14 @@ export class NotFoundError extends BaseGraphQLError {
   }
 }
 
+export class MethodNotAllowedError extends BaseGraphQLError {
+  constructor(message: string, extensions?: Record<string, any>) {
+    super(message, 'METHOD_NOT_ALLOWED', extensions);
+
+    Object.defineProperty(this, 'name', { value: 'MethodNotAllowedError' });
+  }
+}
+
 export class ConflictError extends BaseGraphQLError {
   constructor(message: string, extensions?: Record<string, any>) {
     super(message, 'CONFLICT', extensions);

packages/twenty-server/src/modules/activity/repositories/comment.repository.ts

@@ -0,0 +1,21 @@
+import { Injectable } from '@nestjs/common';
+
+import { WorkspaceDataSourceService } from 'src/engine/workspace-datasource/workspace-datasource.service';
+
+@Injectable()
+export class CommentRepository {
+  constructor(
+    private readonly workspaceDataSourceService: WorkspaceDataSourceService,
+  ) {}
+
+  async deleteByAuthorId(authorId: string, workspaceId: string): Promise<void> {
+    const dataSourceSchema =
+      this.workspaceDataSourceService.getSchemaName(workspaceId);
+
+    await this.workspaceDataSourceService.executeRawQuery(
+      `DELETE FROM ${dataSourceSchema}."comment" WHERE "authorId" = $1`,
+      [authorId],
+      workspaceId,
+    );
+  }
+}

packages/twenty-server/src/modules/attachment/repositories/attachment.repository.ts

@@ -0,0 +1,21 @@
+import { Injectable } from '@nestjs/common';
+
+import { WorkspaceDataSourceService } from 'src/engine/workspace-datasource/workspace-datasource.service';
+
+@Injectable()
+export class AttachmentRepository {
+  constructor(
+    private readonly workspaceDataSourceService: WorkspaceDataSourceService,
+  ) {}
+
+  async deleteByAuthorId(authorId: string, workspaceId: string): Promise<void> {
+    const dataSourceSchema =
+      this.workspaceDataSourceService.getSchemaName(workspaceId);
+
+    await this.workspaceDataSourceService.executeRawQuery(
+      `DELETE FROM ${dataSourceSchema}."attachment" WHERE "authorId" = $1`,
+      [authorId],
+      workspaceId,
+    );
+  }
+}

packages/twenty-server/src/modules/connected-account/query-hooks/blocklist/blocklist-update-many.pre-query.hook.ts

@@ -1,4 +1,4 @@
-import { Injectable } from '@nestjs/common';
+import { Injectable, MethodNotAllowedException } from '@nestjs/common';
 
 import { WorkspacePreQueryHook } from 'src/engine/api/graphql/workspace-query-runner/workspace-pre-query-hook/interfaces/workspace-pre-query-hook.interface';
 
@@ -7,6 +7,6 @@ export class BlocklistUpdateManyPreQueryHook implements WorkspacePreQueryHook {
   constructor() {}
 
   async execute(): Promise<void> {
-    throw new Error('Method not implemented.');
+    throw new MethodNotAllowedException('Method not allowed.');
   }
 }

packages/twenty-server/src/modules/messaging/query-hooks/message/message-find-one.pre-query-hook.ts

@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unused-vars */
-import { BadRequestException, Injectable } from '@nestjs/common';
+import { Injectable, MethodNotAllowedException } from '@nestjs/common';
 
 import { WorkspacePreQueryHook } from 'src/engine/api/graphql/workspace-query-runner/workspace-pre-query-hook/interfaces/workspace-pre-query-hook.interface';
 import { FindOneResolverArgs } from 'src/engine/api/graphql/workspace-resolver-builder/interfaces/workspace-resolvers-builder.interface';
@@ -11,6 +11,6 @@ export class MessageFindOnePreQueryHook implements WorkspacePreQueryHook {
     _workspaceId: string,
     _payload: FindOneResolverArgs,
   ): Promise<void> {
-    throw new BadRequestException('Method not implemented.');
+    throw new MethodNotAllowedException('Method not allowed.');
   }
 }

packages/twenty-server/src/modules/workspace-member/query-hooks/workspace-member-delete-many.pre-query.hook.ts

@@ -0,0 +1,14 @@
+import { Injectable, MethodNotAllowedException } from '@nestjs/common';
+
+import { WorkspacePreQueryHook } from 'src/engine/api/graphql/workspace-query-runner/workspace-pre-query-hook/interfaces/workspace-pre-query-hook.interface';
+
+@Injectable()
+export class WorkspaceMemberDeleteManyPreQueryHook
+  implements WorkspacePreQueryHook
+{
+  constructor() {}
+
+  async execute(): Promise<void> {
+    throw new MethodNotAllowedException('Method not allowed.');
+  }
+}

packages/twenty-server/src/modules/workspace-member/query-hooks/workspace-member-delete-one.pre-query.hook.ts

@@ -0,0 +1,41 @@
+import { Injectable } from '@nestjs/common';
+
+import { WorkspacePreQueryHook } from 'src/engine/api/graphql/workspace-query-runner/workspace-pre-query-hook/interfaces/workspace-pre-query-hook.interface';
+import { DeleteOneResolverArgs } from 'src/engine/api/graphql/workspace-resolver-builder/interfaces/workspace-resolvers-builder.interface';
+
+import { InjectObjectMetadataRepository } from 'src/engine/object-metadata-repository/object-metadata-repository.decorator';
+import { CommentRepository } from 'src/modules/activity/repositories/comment.repository';
+import { CommentObjectMetadata } from 'src/modules/activity/standard-objects/comment.object-metadata';
+import { AttachmentRepository } from 'src/modules/attachment/repositories/attachment.repository';
+import { AttachmentObjectMetadata } from 'src/modules/attachment/standard-objects/attachment.object-metadata';
+
+@Injectable()
+export class WorkspaceMemberDeleteOnePreQueryHook
+  implements WorkspacePreQueryHook
+{
+  constructor(
+    @InjectObjectMetadataRepository(AttachmentObjectMetadata)
+    private readonly attachmentRepository: AttachmentRepository,
+    @InjectObjectMetadataRepository(CommentObjectMetadata)
+    private readonly commentRepository: CommentRepository,
+  ) {}
+
+  // There is no need to validate the user's access to the workspace member since we don't have permission yet.
+  async execute(
+    userId: string,
+    workspaceId: string,
+    payload: DeleteOneResolverArgs,
+  ): Promise<void> {
+    const workspaceMemberId = payload.id;
+
+    await this.attachmentRepository.deleteByAuthorId(
+      workspaceMemberId,
+      workspaceId,
+    );
+
+    await this.commentRepository.deleteByAuthorId(
+      workspaceMemberId,
+      workspaceId,
+    );
+  }
+}

packages/twenty-server/src/modules/workspace-member/query-hooks/workspace-member-query-hook.module.ts

@@ -0,0 +1,27 @@
+import { Module } from '@nestjs/common';
+
+import { ObjectMetadataRepositoryModule } from 'src/engine/object-metadata-repository/object-metadata-repository.module';
+import { CommentObjectMetadata } from 'src/modules/activity/standard-objects/comment.object-metadata';
+import { AttachmentObjectMetadata } from 'src/modules/attachment/standard-objects/attachment.object-metadata';
+import { WorkspaceMemberDeleteManyPreQueryHook } from 'src/modules/workspace-member/query-hooks/workspace-member-delete-many.pre-query.hook';
+import { WorkspaceMemberDeleteOnePreQueryHook } from 'src/modules/workspace-member/query-hooks/workspace-member-delete-one.pre-query.hook';
+
+@Module({
+  imports: [
+    ObjectMetadataRepositoryModule.forFeature([
+      AttachmentObjectMetadata,
+      CommentObjectMetadata,
+    ]),
+  ],
+  providers: [
+    {
+      provide: WorkspaceMemberDeleteOnePreQueryHook.name,
+      useClass: WorkspaceMemberDeleteOnePreQueryHook,
+    },
+    {
+      provide: WorkspaceMemberDeleteManyPreQueryHook.name,
+      useClass: WorkspaceMemberDeleteManyPreQueryHook,
+    },
+  ],
+})
+export class WorkspaceMemberQueryHookModule {}