feat: controller return sample file

report/src/main/java/cz/muni/fi/pa165/report/server/ReportController.java

@@ -2,9 +2,13 @@ package cz.muni.fi.pa165.report.server;
 import cz.muni.fi.pa165.report.server.api.ReportApiDelegate;
 import org.springframework.core.io.ByteArrayResource;
 import org.springframework.core.io.Resource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.RestController;
 
+import java.io.*;
+
 
 @RestController
 public class ReportController implements ReportApiDelegate{
@@ -12,24 +16,34 @@ public class ReportController implements ReportApiDelegate{
     @Override
     public ResponseEntity<Resource> getReportFlightById(Long id){
 
-        byte[] bytes = new byte[(int) 246];
-        ByteArrayResource resource = new ByteArrayResource(bytes);
-        return ResponseEntity.ok(resource);
+        ClassLoader classLoader = getClass().getClassLoader();
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.add("Content-Type", "application/pdf");
+        headers.add("Content-Disposition", "attachment; filename=labels.pdf");
+
+        // the stream holding the file content
+
+        // funny, if can use Java 7, please uses Files.readAllBytes(path)
+        try(InputStream inputStream = classLoader.getResourceAsStream("sample.pdf")){
+            byte[] bytes = new byte[inputStream.available()];
+            inputStream.read(bytes);
+            ByteArrayResource resource = new ByteArrayResource(bytes);
+            return new ResponseEntity<>(resource, headers, HttpStatus.OK);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
     }
 
     @Override
     public ResponseEntity<Resource> getReportAirportById(Long id){
 
-        byte[] bytes = new byte[(int) 246];
-        ByteArrayResource resource = new ByteArrayResource(bytes);
-        return ResponseEntity.ok(resource);
+        return getReportFlightById(id);
     }
     @Override
     public ResponseEntity<Resource> getReportAirplaneById(Long id){
 
-        byte[] bytes = new byte[(int) 246];
-        ByteArrayResource resource = new ByteArrayResource(bytes);
-        return ResponseEntity.ok(resource);
+        return getReportFlightById(id);
     }
 }