Add GQL queries for LanguageEngagements (#3081)

Author: CarsonF

src/components/engagement/dto/list-engagements.dto.ts

@@ -42,6 +42,14 @@ export class EngagementListOutput extends PaginatedList<
   itemsDescription: PaginatedList.itemDescriptionFor('engagements'),
 }) {}
 
+@ObjectType()
+export class LanguageEngagementListOutput extends PaginatedList(
+  LanguageEngagement,
+  {
+    itemsDescription: PaginatedList.itemDescriptionFor('language engagements'),
+  },
+) {}
+
 @ObjectType({
   description: SecuredList.descriptionFor('engagements'),
 })

src/components/engagement/engagement.resolver.ts

@@ -8,6 +8,7 @@ import {
 } from '@nestjs/graphql';
 import {
   AnonSession,
+  InvalidIdForTypeException,
   ListArg,
   LoggedInSession,
   mapSecuredValue,
@@ -17,7 +18,11 @@ import {
 import { Loader, LoaderOf } from '../../core';
 import { CeremonyLoader, SecuredCeremony } from '../ceremony';
 import { ChangesetIds, IdsAndView, IdsAndViewArg } from '../changeset/dto';
-import { EngagementLoader, EngagementService } from '../engagement';
+import {
+  EngagementLoader,
+  EngagementService,
+  LanguageEngagementListOutput,
+} from '../engagement';
 import {
   CreateInternshipEngagementInput,
   CreateInternshipEngagementOutput,
@@ -28,6 +33,7 @@ import {
   EngagementListInput,
   EngagementListOutput,
   IEngagement,
+  LanguageEngagement,
   UpdateInternshipEngagementInput,
   UpdateInternshipEngagementOutput,
   UpdateLanguageEngagementInput,
@@ -48,6 +54,20 @@ export class EngagementResolver {
     return await engagements.load(key);
   }
 
+  @Query(() => LanguageEngagement, {
+    description: 'Lookup a LanguageEngagement by ID',
+  })
+  async languageEngagement(
+    @IdsAndViewArg() key: IdsAndView,
+    @Loader(EngagementLoader) engagements: LoaderOf<EngagementLoader>,
+  ): Promise<Engagement> {
+    const engagement = await engagements.load(key);
+    if (engagement.__typename !== 'LanguageEngagement') {
+      throw new InvalidIdForTypeException();
+    }
+    return engagement;
+  }
+
   @Query(() => EngagementListOutput, {
     description: 'Look up engagements',
   })
@@ -61,6 +81,26 @@ export class EngagementResolver {
     return list;
   }
 
+  @Query(() => LanguageEngagementListOutput, {
+    description: 'Look up language engagements',
+  })
+  async languageEngagements(
+    @ListArg(EngagementListInput) input: EngagementListInput,
+    @AnonSession() session: Session,
+    @Loader(EngagementLoader) engagements: LoaderOf<EngagementLoader>,
+  ): Promise<EngagementListOutput> {
+    const list = await this.service.list(
+      {
+        ...input,
+        filter: { ...input.filter, type: 'language' },
+      },
+      session,
+    );
+    engagements.primeAll(list.items);
+
+    return list;
+  }
+
   @ResolveField(() => SecuredCeremony)
   async ceremony(
     @Parent() engagement: Engagement,