import { IQueryHandler, QueryHandler } from '@nestjs/cqrs';
import { IssueReadModel } from '@task-stream/api/tracker/domain';
import { FindIssuesRepository } from '../ports/find-issues.repository';
import { ReadAccess, UUID } from './read-access';
import { GetIssueQuery } from './get-issue.query';

@QueryHandler(GetIssueQuery)
export class GetIssueQueryHandler
  implements IQueryHandler<GetIssueQuery, IssueReadModel>
{
  constructor(
    private readonly findIssues: FindIssuesRepository,
    private readonly access: ReadAccess,
  ) {}

  async execute(query: GetIssueQuery): Promise<IssueReadModel> {
    const issue = UUID.test(query.idOrKey)
      ? await this.findIssues.findById(query.idOrKey)
      : await this.findIssues.findByKey(query.idOrKey.toUpperCase());
    const found = this.access.assertFound(issue, 'Issue', query.idOrKey);
    await this.access.assertCanViewIssue(found, query.viewerId, {
      entity: 'Issue',
      ref: query.idOrKey,
    });
    return found;
  }
}