[Unauth Home page] Sort Explore Spaces section on most activity

src/domain/space/space/dto/explore.spaces.dto.input.ts

@@ -0,0 +1,18 @@
+import { Field, InputType } from '@nestjs/graphql';
+
+@InputType()
+export class ExploreSpacesInput {
+  @Field(() => Number, {
+    nullable: true,
+    description: 'Amount of Spaces returned.',
+    defaultValue: 30,
+  })
+  limit!: number;
+
+  @Field(() => Number, {
+    nullable: true,
+    description: 'Take into account only the activity in the past X days.',
+    defaultValue: 30,
+  })
+  daysOld!: number;
+}

src/domain/space/space/space.resolver.queries.ts

@@ -5,6 +5,7 @@ import { UUID_NAMEID } from '@domain/common/scalars';
 import { SpaceService } from './space.service';
 import { ISpace } from './space.interface';
 import { SpacesQueryArgs } from './dto/space.args.query.spaces';
+import { ExploreSpacesInput } from './dto/explore.spaces.dto.input';
 import { InnovationHub } from '@domain/innovation-hub/types';
 import { GraphqlGuard } from '@core/authorization';
 import { PaginatedSpaces, PaginationArgs } from '@core/pagination';
@@ -64,4 +65,15 @@ export class SpaceResolverQueries {
     });
     return space;
   }
+
+  @UseGuards(GraphqlGuard)
+  @Query(() => [ISpace], {
+    nullable: false,
+    description: 'Active Spaces only, order by most active in the past X days.',
+  })
+  public exploreSpaces(
+    @Args('options', { nullable: true }) options?: ExploreSpacesInput
+  ): Promise<ISpace[]> {
+    return this.spaceService.getExploreSpaces(options?.limit, options?.daysOld);
+  }
 }

src/domain/space/space/space.service.ts

@@ -80,6 +80,10 @@ import { templatesSetDefaults } from '../space.defaults/definitions/space.defaul
 import { InputCreatorService } from '@services/api/input-creator/input.creator.service';
 import { RoleSetService } from '@domain/access/role-set/role.set.service';
 import { IRoleSet } from '@domain/access/role-set/role.set.interface';
+import { Activity } from '@platform/activity';
+
+const EXPLORE_SPACES_LIMIT = 30;
+const EXPLORE_SPACES_ACTIVITY_DAYS_OLD = 30;
 
 @Injectable()
 export class SpaceService {
@@ -726,6 +730,31 @@ export class SpaceService {
     return space;
   }
 
+  public getExploreSpaces(
+    limit = EXPLORE_SPACES_LIMIT,
+    daysOld = EXPLORE_SPACES_ACTIVITY_DAYS_OLD
+  ): Promise<ISpace[]> {
+    const daysAgo = new Date();
+    daysAgo.setDate(daysAgo.getDate() - daysOld);
+
+    return (
+      this.spaceRepository
+        .createQueryBuilder('s')
+        .leftJoinAndSelect('s.authorization', 'authorization') // eager load the authorization
+        .innerJoin(Activity, 'a', 's.collaborationId = a.collaborationID')
+        .where({
+          level: SpaceLevel.SPACE,
+          visibility: SpaceVisibility.ACTIVE,
+        })
+        // activities in the past "daysOld" days
+        .andWhere('a.createdDate >= :daysAgo', { daysAgo })
+        .groupBy('s.id')
+        .orderBy('COUNT(a.id)', 'DESC')
+        .limit(limit)
+        .getMany()
+    );
+  }
+
   async getSpace(
     spaceID: string,
     options?: FindOneOptions<Space>