feature: add boost flag to terms query

es/terms_query.go

@@ -29,6 +29,37 @@ func Terms(key string, values ...any) termsType {
 	}
 }
 
+func (t termsType) putInTheField(key string, value any) termsType {
+	if terms, ok := t["terms"].(Object); ok {
+		terms[key] = value
+	}
+	return t
+}
+
+// Boost sets the "boost" parameter in a termsType query.
+//
+// This method allows you to specify a boost factor for the terms query,
+// which influences the relevance score of documents matching any of the
+// specified terms. A higher boost value increases the importance of the
+// terms in the query, resulting in higher scores for documents that match
+// any of these terms.
+//
+// Example usage:
+//
+//	t := Terms().Boost(1.5)
+//	// t now includes a "boost" parameter set to 1.5.
+//
+// Parameters:
+//   - boost: A float64 value representing the boost factor for the terms
+//     query.
+//
+// Returns:
+//
+//	The updated termsType object with the "boost" parameter set.
+func (t termsType) Boost(boost float64) termsType {
+	return t.putInTheField("boost", boost)
+}
+
 // TermsArray creates a new termsType object with the specified key and values as a slice.
 //
 // This function initializes a termsType object for a terms query, where the key

es/terms_query_test.go

@@ -35,6 +35,27 @@ func Test_Terms_method_should_create_termsType(t *testing.T) {
 	assert.IsTypeString(t, "es.termsType", b)
 }
 
+func Test_Terms_should_have_Boost_method(t *testing.T) {
+	// Given
+	terms := es.Terms("key", "value1", "value2", "value3")
+
+	// When Then
+	assert.NotNil(t, terms.Boost)
+}
+
+func Test_Terms_Boost_should_create_json_with_boost_field_inside_terms(t *testing.T) {
+	// Given
+	query := es.NewQuery(
+		es.Terms("sector.name", "a1", "b2", "c3").
+			Boost(2.718),
+	)
+
+	// When Then
+	assert.NotNil(t, query)
+	bodyJSON := assert.MarshalWithoutError(t, query)
+	assert.Equal(t, "{\"query\":{\"terms\":{\"boost\":2.718,\"sector.name\":[\"a1\",\"b2\",\"c3\"]}}}", bodyJSON)
+}
+
 ////   TermsArray   ////
 
 func Test_TermsArray_should_exist_on_es_package(t *testing.T) {