feature: add ability to vote on datasets

src/main/java/de/uni_passau/fim/PADAS/group3/DataDash/controler/DatasetController.java

@@ -12,6 +12,8 @@ import org.springframework.data.web.config.EnableSpringDataWebSupport;
 import org.springframework.data.domain.Sort;
 
 import java.util.UUID;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 
 @RestController
 @RequestMapping("/api/v1/datasets")
@@ -61,6 +63,16 @@ public class DatasetController {
         return null; // new ResponseEntity<>(null, HttpStatus.OK);
     }
 
+    @PostMapping("/id/{id}/vote")
+    public String postMethodName(@PathVariable("id") UUID id,
+            @RequestParam("stars") int stars) {
+        if (stars > 0 && stars < 6) {
+            datasetService.voteDataset(id, stars);
+            return null;
+        }
+        return "Invalid vote";
+    }
+
     @GetMapping
     public Page<Dataset> getDatasetsByDateAfter(@RequestParam(value = "author", required = false) String author,
             @RequestParam(value = "title", required = false) String title,

src/main/java/de/uni_passau/fim/PADAS/group3/DataDash/model/DatasetService.java

@@ -33,6 +33,12 @@ public class DatasetService {
         datasetRepository.getDatasetById(id).setTitle(title);
     }
 
+    public void voteDataset(UUID id, int vote) {
+        Dataset dataset = datasetRepository.getDatasetById(id);
+        dataset.vote(vote);
+        datasetRepository.save(dataset);
+    }
+
     public void deleteDataset(UUID id) {
         Dataset dataset = datasetRepository.getDatasetById(id);
         datasetRepository.delete(dataset);