import { Comment } from '../../domain/entities/comment.entity.js';
import { CommentDto } from '../dto/comment.dto.js';
import { UserDto } from '../../../user/application/dto/user.dto.js';
import { FileDto } from '../../../file/application/dto/file.dto.js';

export class CommentApplicationMapper {
  static toDto(
    comment: Comment,
    usersById: ReadonlyMap<string, UserDto>,
    filesById: ReadonlyMap<string, FileDto> = new Map(),
  ): CommentDto {
    return {
      id: comment.id as string,
      issueId: comment.issueId,
      authorId: comment.authorId,
      author: comment.authorId ? (usersById.get(comment.authorId) ?? null) : null,
      content: comment.isDeleted ? null : comment.content,
      // Файл могли удалить между запросами — такое вложение просто не показываем
      attachments: comment.isDeleted
        ? []
        : comment.fileIds.flatMap((fileId) => {
            const file = filesById.get(fileId);
            return file ? [file] : [];
          }),
      editedAt: comment.editedAt,
      deletedAt: comment.deletedAt,
      createdAt: comment.createdAt,
      updatedAt: comment.updatedAt,
    };
  }
}