javadev / pt-backend

import java.io.IOException;

import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.util.FastByteArrayOutputStream;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;

import org.springframework.web.bind.annotation.RestController;

@RestController

@RequestMapping("api/v1/admin/user-program-file")

class AdminUserProgramFileResource {

    private final AdminUserProgramFileService userProgramFileService;

    @GetMapping(value = "{id}/{fileName}")

    @ResponseBody

    Object findOne(

            @PathVariable Long id, @PathVariable String fileName, HttpServletResponse response)

            throws IOException {

        try (FastByteArrayOutputStream outputStream = new FastByteArrayOutputStream()) {

            final ProgramResponseDTO programResponseDTO =

                    userProgramFileService.createXlsx(id, outputStream);

            response.setContentType(programResponseDTO.getFileType());

            response.setHeader(

                    "Content-disposition",

                    "attachment; filename=" + programResponseDTO.getFileName());

            outputStream.writeTo(response.getOutputStream());

            response.getOutputStream().close();

            outputStream.reset();

        }

        return null;

    }

}