fix: update search of ES and max score to optimize

src/structures/interfaces/structure-search-response.interface.ts

@@ -4,6 +4,7 @@ export interface StructureSearchResult {
   hits: {
     total: number;
     hits: Array<{
+      _score: number;
       _source: StructureSearchBody;
     }>;
   };

src/structures/services/structures-search.service.ts

@@ -4,6 +4,7 @@ import { structureDto } from '../dto/structure.dto';
 import { StructureDocument } from '../schemas/structure.schema';
 import { StructureSearchBody } from '../interfaces/structure-search-body.interface';
 import { StructureSearchResult } from '../interfaces/structure-search-response.interface';
+import { elementAt } from 'rxjs/operators';
 
 @Injectable()
 export class StructuresSearchService {
@@ -65,14 +66,22 @@ export class StructuresSearchService {
           query_string: {
             analyze_wildcard: 'true',
             query: searchString,
-            fields: ['structureName^5', 'structureType^5', 'address.street', 'address.commune^5', 'description'],
+            fields: ['structureName^5', 'structureType^5', 'address.commune^10', 'description'],
             fuzziness: 'AUTO',
           },
         },
       },
     });
-    const hits = body.hits.hits;
-    return hits.map((item) => item._source);
+    const maxScore = Math.max.apply(
+      Math,
+      body.hits.hits.map(function (hit) {
+        return hit._score;
+      })
+    );
+    const sortedHits = body.hits.hits.filter(function (elem) {
+      return elem._score >= maxScore / 1.5;
+    });
+    return sortedHits.map((item) => item._source);
   }
 
   public async update(structure: structureDto, id: string): Promise<any> {