fix(rules): automatic facet filter deserialization

algoliasearch-core/src/main/java/com/algolia/search/models/rules/AutomaticFacetFilter.java

@@ -6,7 +6,11 @@
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.ObjectCodec;
 import com.fasterxml.jackson.core.type.TypeReference;
-import com.fasterxml.jackson.databind.*;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectReader;
 import java.io.IOException;
 import java.io.Serializable;
 import java.util.List;
@@ -84,7 +88,7 @@ public Object deserialize(JsonParser jp, DeserializationContext ctxt) throws IOE
     ObjectMapper objectMapper = Defaults.getObjectMapper();
 
     if ((!node.isNull() && node.size() > 0)) {
-      if (node.get(0).has("disjunctive") || node.get(0).has("score")) {
+      if (node.get(0).has("facet") || node.get(0).has("disjunctive") || node.get(0).has("score")) {
         ObjectReader reader =
             objectMapper.readerFor(new TypeReference<List<AutomaticFacetFilter>>() {});
         return reader.readValue(node);

algoliasearch-core/src/test/java/com/algolia/search/serialization/TestAutomaticFacetFilterDeserializer.java

@@ -0,0 +1,64 @@
+package com.algolia.search.serialization;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+import com.algolia.search.Defaults;
+import com.algolia.search.models.rules.AutomaticFacetFilter;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.type.TypeReference;
+import java.util.List;
+import org.junit.jupiter.api.Test;
+
+public class TestAutomaticFacetFilterDeserializer {
+
+  @Test
+  void testDeserializer() throws JsonProcessingException {
+    String json = "{\"facet\":\"brand_name\",\"disjunctive\":true,\"score\":10}";
+    AutomaticFacetFilter automaticFacetFilter =
+        Defaults.getObjectMapper().readValue(json, AutomaticFacetFilter.class);
+
+    assertThat(automaticFacetFilter.getFacet()).isEqualTo("brand_name");
+    assertThat(automaticFacetFilter.getDisjunctive()).isTrue();
+    assertThat(automaticFacetFilter.getScore()).isEqualTo(10);
+  }
+
+  @Test
+  void testDeserializerOneAttribute() throws JsonProcessingException {
+    String json = "{\"facet\":\"brand_name\"}";
+    AutomaticFacetFilter automaticFacetFilter =
+        Defaults.getObjectMapper().readValue(json, AutomaticFacetFilter.class);
+
+    assertThat(automaticFacetFilter.getFacet()).isEqualTo("brand_name");
+    assertThat(automaticFacetFilter.getDisjunctive()).isFalse();
+    assertThat(automaticFacetFilter.getScore()).isNull();
+  }
+
+  @Test
+  void testDeserializerLegacy() throws JsonProcessingException {
+    String json = "\"brand_name\"";
+    AutomaticFacetFilter automaticFacetFilter =
+        Defaults.getObjectMapper().readValue(json, AutomaticFacetFilter.class);
+
+    assertThat(automaticFacetFilter.getFacet()).isEqualTo("brand_name");
+    assertThat(automaticFacetFilter.getDisjunctive()).isFalse();
+    assertThat(automaticFacetFilter.getScore()).isNull();
+  }
+
+  @Test
+  void testDeserializerLegacyList() throws JsonProcessingException {
+    String json = "[\"lastname\",\"firstname\"]";
+    List<AutomaticFacetFilter> deserialized =
+        Defaults.getObjectMapper()
+            .readValue(json, new TypeReference<List<AutomaticFacetFilter>>() {});
+
+    AutomaticFacetFilter lastname = deserialized.get(0);
+    assertThat(lastname.getFacet()).isEqualTo("lastname");
+    assertThat(lastname.getDisjunctive()).isFalse();
+    assertThat(lastname.getScore()).isNull();
+
+    AutomaticFacetFilter firstname = deserialized.get(1);
+    assertThat(firstname.getFacet()).isEqualTo("firstname");
+    assertThat(firstname.getDisjunctive()).isFalse();
+    assertThat(firstname.getScore()).isNull();
+  }
+}