Expose Project.membership(user: ID)

Author: CarsonF

src/components/project/project-member/member-project-connection.resolver.ts

@@ -0,0 +1,23 @@
+import { Parent, ResolveField, Resolver } from '@nestjs/graphql';
+import { type ID, IdArg } from '~/common';
+import { Loader, type LoaderOf } from '~/core/data-loader';
+import { IProject, type Project } from '../dto';
+import { ProjectMember } from './dto';
+import { MembershipByProjectAndUserLoader } from './membership-by-project-and-user.loader';
+
+@Resolver(IProject)
+export class MemberProjectConnectionResolver {
+  @ResolveField(() => ProjectMember)
+  async membership(
+    @Parent() project: Project,
+    @IdArg({ name: 'user' }) userId: ID<'User'>,
+    @Loader(() => MembershipByProjectAndUserLoader)
+    loader: LoaderOf<MembershipByProjectAndUserLoader>,
+  ): Promise<ProjectMember> {
+    const { membership } = await loader.load({
+      project: project.id,
+      user: userId,
+    });
+    return membership;
+  }
+}

src/components/project/project-member/membership-by-project-and-user.loader.ts

@@ -0,0 +1,35 @@
+import { type ID } from '~/common';
+import {
+  type DataLoaderStrategy,
+  LoaderFactory,
+  type LoaderOptionsOf,
+} from '~/core/data-loader';
+import { type ProjectMember } from './dto';
+import { ProjectMemberService } from './project-member.service';
+
+export interface MembershipByProjectAndUserInput {
+  project: ID<'Project'>;
+  user: ID<'User'>;
+}
+
+@LoaderFactory()
+export class MembershipByProjectAndUserLoader
+  implements
+    DataLoaderStrategy<
+      { id: MembershipByProjectAndUserInput; membership: ProjectMember },
+      MembershipByProjectAndUserInput,
+      string
+    >
+{
+  constructor(private readonly service: ProjectMemberService) {}
+
+  getOptions() {
+    return {
+      cacheKeyFn: (input) => `${input.project}:${input.user}`,
+    } satisfies LoaderOptionsOf<MembershipByProjectAndUserLoader>;
+  }
+
+  async loadMany(input: readonly MembershipByProjectAndUserInput[]) {
+    return await this.service.readManyByProjectAndUser(input);
+  }
+}

src/components/project/project-member/project-member.gel.repository.ts

@@ -7,6 +7,7 @@ import {
   ProjectMember,
   type ProjectMemberListInput,
 } from './dto';
+import type { MembershipByProjectAndUserInput } from './membership-by-project-and-user.loader';
 import { type ProjectMemberRepository as Neo4jRepository } from './project-member.repository';
 
 @Injectable()
@@ -39,6 +40,29 @@ export class ProjectMemberGelRepository
     return await this.db.run(query);
   }
 
+  async readManyByProjectAndUser(
+    input: readonly MembershipByProjectAndUserInput[],
+  ) {
+    return await this.db.run(this.readManyByProjectAndUserQuery, { input });
+  }
+  private readonly readManyByProjectAndUserQuery = e.params(
+    {
+      input: e.array(e.tuple({ project: e.uuid, user: e.uuid })),
+    },
+    ({ input }) =>
+      e.select(e.Project.Member, (member) => ({
+        ...this.hydrate(member),
+        filter: e.op(
+          e.tuple({
+            project: member.project.id,
+            user: member.user.id,
+          }),
+          'in',
+          e.array_unpack(input),
+        ),
+      })),
+  );
+
   async listAsNotifiers(projectId: ID, roles?: Role[]) {
     const project = e.cast(e.Project, e.uuid(projectId));
     const members = e.select(project.members, (member) => ({

src/components/project/project-member/project-member.module.ts

@@ -6,6 +6,7 @@ import { ProjectModule } from '../project.module';
 import { AvailableRolesToProjectResolver } from './available-roles-to-project.resolver';
 import { DirectorChangeApplyToProjectMembersHandler } from './handlers/director-change-apply-to-project-members.handler';
 import { RegionsZoneChangesAppliesDirectorChangeToProjectMembersHandler } from './handlers/regions-zone-changes-applies-director-change-to-project-members.handler';
+import { MemberProjectConnectionResolver } from './member-project-connection.resolver';
 import { AddInactiveAtMigration } from './migrations/add-inactive-at.migration';
 import { ProjectMemberGelRepository } from './project-member.gel.repository';
 import { ProjectMemberLoader } from './project-member.loader';
@@ -22,6 +23,7 @@ import { ProjectMemberService } from './project-member.service';
   providers: [
     ProjectMemberResolver,
     AvailableRolesToProjectResolver,
+    MemberProjectConnectionResolver,
     ProjectMemberService,
     splitDb(ProjectMemberRepository, ProjectMemberGelRepository),
     ProjectMemberLoader,

src/components/project/project-member/project-member.repository.ts

@@ -44,6 +44,7 @@ import {
   type ProjectMemberListInput,
   type UpdateProjectMember,
 } from './dto';
+import { type MembershipByProjectAndUserInput } from './membership-by-project-and-user.loader';
 
 @Injectable()
 export class ProjectMemberRepository extends DtoRepository(ProjectMember) {
@@ -155,6 +156,24 @@ export class ProjectMemberRepository extends DtoRepository(ProjectMember) {
         );
   }
 
+  async readManyByProjectAndUser(
+    input: readonly MembershipByProjectAndUserInput[],
+  ) {
+    return await this.db
+      .query()
+      .unwind([...input], 'input')
+      .match([
+        node('project', 'Project', { id: variable('input.project') }),
+        relation('out', '', 'member', ACTIVE),
+        node('node', 'ProjectMember'),
+        relation('out', '', 'user', ACTIVE),
+        node('user', 'User', { id: variable('input.user') }),
+      ])
+      .apply(this.hydrate())
+      .map('dto')
+      .run();
+  }
+
   async list({ filter, ...input }: ProjectMemberListInput) {
     const result = await this.db
       .query()

src/components/project/project-member/project-member.service.ts

@@ -21,6 +21,7 @@ import {
   type ProjectMemberListOutput,
   type UpdateProjectMember,
 } from './dto';
+import { type MembershipByProjectAndUserInput } from './membership-by-project-and-user.loader';
 import { ProjectMemberRepository } from './project-member.repository';
 
 @Injectable()
@@ -75,6 +76,16 @@ export class ProjectMemberService {
     return projectMembers.map((dto) => this.secure(dto));
   }
 
+  async readManyByProjectAndUser(
+    input: readonly MembershipByProjectAndUserInput[],
+  ) {
+    const dtos = await this.repo.readManyByProjectAndUser(input);
+    return dtos.map((dto) => ({
+      id: { project: dto.project.id, user: dto.user.id },
+      membership: this.secure(dto),
+    }));
+  }
+
   private secure(dto: UnsecuredDto<ProjectMember>): ProjectMember {
     const { user, ...secured } = this.privileges.for(ProjectMember).secure(dto);
     return {