javadev / pt-backend

@RestController

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

class AdminProgramFileResource {

    private final AdminProgramService programService;

    @Autowired

    AdminProgramFileResource(AdminProgramService programService) {

        this.programService = programService;

    }

    @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 = programService.findOne(id);

            programService.dataUrlToOutputStream(programResponseDTO.dataUrl, outputStream);

            response.setContentType(programResponseDTO.getFileType());

            response.setHeader(

                    "Content-disposition",

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

            outputStream.writeTo(response.getOutputStream());

            response.getOutputStream().close();

            outputStream.reset();

        }

        return null;