pdf-extract-Via_Software/src/services/exemple/ExempleService.ts

import { inject, injectable } from 'tsyringe';
import AppError from '../../erros/AppError';
import IPdfToTextProvider from '../../containers/providers/pdfToText/IPdfToTextProvider';
import regexMapaFolha from '../../utils/regex/regexMapaFolha';
import * as format from '../../utils/format';

interface IRequest {
  files: Express.Multer.File[];
}

interface ICompanyContent {
  name: string;
  code: string;
  cnpj: string;
  refEndDate: string;
  refStartDate: string;
  address: string;
  contentEmployee: string;
}

type IResponse = Array<{
  fileName: string;
  content: string;
}>;

@injectable()
export default class ExempleService {
  constructor(
    @inject('PdfToTextProvider')
    private pdfToTextProvider: IPdfToTextProvider,
  ) {}

  public async execute({ files }: IRequest): Promise<IResponse> {
    if (!files) {
      throw new AppError('File is required');
    }

    files.forEach(file => {
      if (file.mimetype !== 'application/pdf') {
        throw new AppError('Only PDF is accepted');
      }
    });

    const response: IResponse = [];

    for (let indexFile = 0; indexFile < files.length; indexFile++) {
      const file = files[indexFile];
      const contentFile = await this.pdfToTextProvider.extract(file.path);

      response.push({
        fileName: file.filename,
        content: contentFile,
      });
    }

    return response;
  }
}