GAP-2436: download application preview odt

pom.xml

@@ -223,6 +223,11 @@
             <artifactId>aws-java-sdk-sns</artifactId>
             <version>1.12.593</version>
         </dependency>
+        <dependency>
+            <groupId>org.odftoolkit</groupId>
+            <artifactId>odfdom-java</artifactId>
+            <version>0.10.0</version>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/gov/cabinetoffice/gap/adminbackend/controllers/ApplicationFormController.java

@@ -9,10 +9,7 @@
 import gov.cabinetoffice.gap.adminbackend.entities.GrantAdmin;
 import gov.cabinetoffice.gap.adminbackend.enums.ApplicationStatusEnum;
 import gov.cabinetoffice.gap.adminbackend.enums.EventType;
-import gov.cabinetoffice.gap.adminbackend.exceptions.ApplicationFormException;
-import gov.cabinetoffice.gap.adminbackend.exceptions.InvalidEventException;
-import gov.cabinetoffice.gap.adminbackend.exceptions.NotFoundException;
-import gov.cabinetoffice.gap.adminbackend.exceptions.UnauthorizedException;
+import gov.cabinetoffice.gap.adminbackend.exceptions.*;
 import gov.cabinetoffice.gap.adminbackend.models.AdminSession;
 import gov.cabinetoffice.gap.adminbackend.security.CheckSchemeOwnership;
 import gov.cabinetoffice.gap.adminbackend.services.*;
@@ -25,7 +22,11 @@
 import io.swagger.v3.oas.annotations.tags.Tag;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.odftoolkit.odfdom.doc.OdfTextDocument;
+import org.springframework.core.io.ByteArrayResource;
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.access.AccessDeniedException;
 import org.springframework.web.bind.annotation.*;
@@ -55,7 +56,9 @@ public class ApplicationFormController {
     private final EventLogService eventLogService;
 
     private final UserService userService;
-
+
+    private final OdtService odtService;
+
     @PostMapping
     @ApiResponses(value = {
             @ApiResponse(responseCode = "201", description = "Application form created successfully.",
@@ -264,6 +267,29 @@ public ResponseEntity<String> getApplicationStatus(@PathVariable final Integer a
         return ResponseEntity.ok(applicationStatus.toString());
     }
 
+    @GetMapping("/{applicationId}/download-summary")
+    @CheckSchemeOwnership
+    public ResponseEntity<ByteArrayResource> exportApplication(
+            @PathVariable final Integer applicationId) {
+        try (OdfTextDocument odt = applicationFormService.getApplicationFormExport(applicationId)) {
+
+            ByteArrayResource odtResource = odtService.odtToResource(odt);
+
+            HttpHeaders headers = new HttpHeaders();
+            headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"application.odt\"");
+            headers.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE);
+
+            return ResponseEntity.ok().headers(headers).contentLength(odtResource.contentLength())
+                    .contentType(MediaType.APPLICATION_OCTET_STREAM).body(odtResource);
+        } catch (RuntimeException e) {
+            log.error("Could not generate ODT for application " + applicationId + ". Exception: ", e);
+            throw new OdtException("Could not generate ODT for this application");
+        } catch (Exception e) {
+            log.error("Could not convert ODT to resource for application " + applicationId + ". Exception: ", e);
+            throw new OdtException("Could not download ODT for this application");
+        }
+    }
+
 
     private void logApplicationEvent(EventType eventType, String sessionId, String applicationId) {
 

src/main/java/gov/cabinetoffice/gap/adminbackend/exceptions/OdtException.java

@@ -0,0 +1,23 @@
+package gov.cabinetoffice.gap.adminbackend.exceptions;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
+public class OdtException extends RuntimeException {
+
+    public OdtException() {
+    }
+
+    public OdtException(String message) {
+        super(message);
+    }
+
+    public OdtException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public OdtException(Throwable cause) {
+        super(cause);
+    }
+}

src/main/java/gov/cabinetoffice/gap/adminbackend/services/ApplicationFormService.java

@@ -27,6 +27,7 @@
 import org.apache.commons.lang3.math.NumberUtils;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.stereotype.Service;
+import org.odftoolkit.odfdom.doc.OdfTextDocument;
 
 import javax.persistence.EntityNotFoundException;
 import javax.servlet.http.HttpSession;
@@ -54,6 +55,8 @@ public class ApplicationFormService {
 
     private final SessionsService sessionsService;
 
+    private final OdtService odtService;
+
     private final Validator validator;
 
     private final Clock clock;
@@ -418,4 +421,12 @@ public void removeAdminReferenceBySchemeId(GrantAdmin grantAdmin, Integer scheme
                     applicationFormRepository.save(application);
                 });
     }
+
+    public OdfTextDocument getApplicationFormExport(Integer applicationId) {
+        final ApplicationFormEntity applicationForm = applicationFormRepository.findById(applicationId)
+                .orElseThrow(() -> new NotFoundException(String.format("No application with ID %s was found", applicationId)));
+        SchemeEntity scheme = this.schemeRepository.findById(applicationForm.getGrantSchemeId()).orElseThrow(EntityNotFoundException::new);
+
+        return odtService.generateSingleOdt(scheme, applicationForm);
+    }
 }