SHIBUI-754: reorder filters work in progress

backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/controller/MetadataFiltersPositionOrderController.java

@@ -0,0 +1,66 @@
+package edu.internet2.tier.shibboleth.admin.ui.controller;
+
+import edu.internet2.tier.shibboleth.admin.ui.domain.filters.MetadataFilter;
+import edu.internet2.tier.shibboleth.admin.ui.domain.resolvers.MetadataResolver;
+import edu.internet2.tier.shibboleth.admin.ui.repository.MetadataResolverRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+
+/**
+ * @author Dmitriy Kopylenko
+ */
+@RestController
+@RequestMapping("/api/MetadataResolvers/{metadataResolverId}/FiltersPositionOrder")
+public class MetadataFiltersPositionOrderController {
+
+    @Autowired
+    MetadataResolverRepository metadataResolverRepository;
+
+    @PostMapping
+    @Transactional
+    public ResponseEntity<?> updateFiltersPositionOrder(@PathVariable String metadataResolverId,
+                                                        @RequestBody List<String> filtersResourceIds) {
+
+        MetadataResolver resolver = metadataResolverRepository.findByResourceId(metadataResolverId);
+        List<MetadataFilter> currentFilters = resolver.getMetadataFilters();
+        List<MetadataFilter> reOrderedFilters = new ArrayList<>();
+
+        filtersResourceIds.forEach(it ->
+                currentFilters.stream()
+                        .filter(f -> f.getResourceId().equals(it))
+                        .findFirst()
+                        .ifPresent(reOrderedFilters::add)
+        );
+
+        resolver.setMetadataFilters(reOrderedFilters);
+        metadataResolverRepository.save(resolver);
+
+        return ResponseEntity.noContent().build();
+    }
+
+    @GetMapping
+    @Transactional(readOnly = true)
+    public ResponseEntity<?> getFiltersPositionOrder(@PathVariable String metadataResolverId) {
+        MetadataResolver resolver = metadataResolverRepository.findByResourceId(metadataResolverId);
+        List<String> resourceIds = resolver.getMetadataFilters().stream()
+                .map(MetadataFilter::getResourceId)
+                .collect(toList());
+
+        return ResponseEntity.ok(resourceIds);
+    }
+}