Updated code

src/main/java/net/gepafin/tendermanagement/web/rest/api/ApplicationApi.java

@@ -131,6 +131,22 @@ public interface ApplicationApi {
             @Parameter(description = "The application id", required = true) @PathVariable("applicationId") Long applicationId,
             @Parameter(description = "status", required = true)@RequestParam(value = "status", required = true) ApplicationStatusTypeEnum status);
 
+    @Operation(summary = "API to generate PDF for an application",
+            responses = {
+                    @ApiResponse(responseCode = "200", description = "OK", content = @Content(mediaType = "application/pdf")),
+                    @ApiResponse(responseCode = "404", description = "Not Found", content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE, examples = {
+                            @ExampleObject(value = ErrorConstants.NOTFOUND_ERROR_EXAMPLE) })),
+                    @ApiResponse(responseCode = "401", description = "Unauthorized", content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE, examples = {
+                            @ExampleObject(value = ErrorConstants.UNAUTHORIZED_ERROR_EXAMPLE) })),
+                    @ApiResponse(responseCode = "400", description = "Bad Request", content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE, examples = {
+                            @ExampleObject(value = ErrorConstants.BADREQUEST_ERROR_EXAMPLE) }))
+            })
+    @PostMapping(value = "/{applicationId}/download-pdf",
+            produces = { "application/pdf" })
+    public ResponseEntity<byte[]> generateApplicationPdf(
+            HttpServletRequest request,
+            @Parameter(description = "The application id", required = true)
+            @PathVariable(value = "applicationId", required = true) Long applicationId);
     
 }
 

src/main/java/net/gepafin/tendermanagement/web/rest/api/impl/ApplicationApiController.java

@@ -13,11 +13,14 @@ import net.gepafin.tendermanagement.model.response.ApplicationResponseBean;
 import net.gepafin.tendermanagement.model.response.NextOrPreviousFormResponse;
 import net.gepafin.tendermanagement.model.util.Response;
 import net.gepafin.tendermanagement.service.ApplicationService;
+import net.gepafin.tendermanagement.service.PdfService;
 import net.gepafin.tendermanagement.web.rest.api.ApplicationApi;
 import net.gepafin.tendermanagement.web.rest.api.errors.Status;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
@@ -35,11 +38,15 @@ public class ApplicationApiController implements ApplicationApi {
     @Autowired
     private ApplicationService applicationService;
 
+    @Autowired
+    private PdfService pdfService;
+
     @Override
     public ResponseEntity<Response<ApplicationResponseBean>> createApplication(HttpServletRequest request, ApplicationRequestBean applicationRequestBean, Long applicationId, Long formId) {
         ApplicationResponseBean applicationResponseBean = applicationService.createApplication(request, applicationRequestBean, applicationId, formId);
         return ResponseEntity.status(HttpStatus.CREATED)
-                .body(new Response<>(applicationResponseBean, Status.SUCCESS, Translator.toLocale(GepafinConstant.APPLICATION_CREATED_SUCCESS_MSG)));    }
+                .body(new Response<>(applicationResponseBean, Status.SUCCESS, Translator.toLocale(GepafinConstant.APPLICATION_CREATED_SUCCESS_MSG)));
+    }
 
     @Override
     public ResponseEntity<Response<ApplicationGetResponseBean>> getApplicationByFormId(HttpServletRequest request
@@ -65,6 +72,7 @@ public class ApplicationApiController implements ApplicationApi {
         return ResponseEntity.status(HttpStatus.CREATED)
                 .body(new Response<>(applicationResponseBean, Status.SUCCESS, Translator.toLocale(GepafinConstant.APPLICATION_CREATED_SUCCESS_MSG)));
     }
+
     @Override
     public ResponseEntity<Response<List<ApplicationResponse>>> getAllApplications(HttpServletRequest request, Long callId, Long companyId) {
         List<ApplicationResponse> applications = applicationService.getAllApplications(request, callId, companyId);
@@ -89,4 +97,19 @@ public class ApplicationApiController implements ApplicationApi {
         return ResponseEntity.status(HttpStatus.OK)
                 .body(new Response<>(applicationResponse, Status.SUCCESS, Translator.toLocale(GepafinConstant.APPLICATION_STATUS_UPDATED_SUCCESSFULLY)));
     }
+
+    @Override
+    public ResponseEntity<byte[]> generateApplicationPdf(HttpServletRequest request, Long applicationId) {
+        byte[] pdfBytes = pdfService.generatePdf(request, applicationId);
+
+        // Prepare headers for downloading the PDF
+        HttpHeaders headers = new HttpHeaders();
+        headers.add("Content-Disposition", "attachment; filename=bando-preview.pdf");
+
+        // Return the PDF as a response
+        return ResponseEntity.ok()
+                .headers(headers)
+                .contentType(MediaType.APPLICATION_PDF)
+                .body(pdfBytes);
+    }
 }