first commit

libs/api/tracker/application/src/lib/queries/get-activity.query-handler.ts

@@ -0,0 +1,25 @@
+import { IQueryHandler, QueryHandler } from '@nestjs/cqrs';
+import { ActivityReadModel } from '@task-stream/api/tracker/domain';
+import { FindActivityRepository } from '../ports/find-activity.repository';
+import { ReadAccess } from './read-access';
+import { GetActivityQuery } from './get-activity.query';
+
+@QueryHandler(GetActivityQuery)
+export class GetActivityQueryHandler
+  implements IQueryHandler<GetActivityQuery, ActivityReadModel[]>
+{
+  constructor(
+    private readonly findActivity: FindActivityRepository,
+    private readonly access: ReadAccess,
+  ) {}
+
+  async execute(query: GetActivityQuery): Promise<ActivityReadModel[]> {
+    await this.access.assertCanView(query.projectId, query.viewerId);
+    return this.findActivity.find({
+      projectId: query.projectId,
+      issueId: query.issueId,
+      limit: Math.min(query.limit, 200),
+      before: query.before,
+    });
+  }
+}