from types import SimpleNamespace

  from typing import Any, Dict

  
  import numpy as np
  
  from search.es_query_builder import ESQueryBuilder
  
  
  def _builder() -> ESQueryBuilder:
      return ESQueryBuilder(
          match_fields=["title.en^3.0", "brief.en^1.0"],

          multilingual_fields=["title", "brief"],
          core_multilingual_fields=["title", "brief"],
          shared_fields=[],

          text_embedding_field="title_embedding",
          default_language="en",
      )
  
  

  def _lexical_clause(query_root: Dict[str, Any]) -> Dict[str, Any]:
      """Return the first named lexical bool clause from query_root."""
      if "bool" in query_root and query_root["bool"].get("_name"):
          return query_root["bool"]

      for clause in query_root.get("bool", {}).get("should", []):

          clause_bool = clause.get("bool") or {}
          if clause_bool.get("_name"):
              return clause_bool
      raise AssertionError("no lexical bool clause in query_root")
  
  

  def test_knn_prefilter_includes_range_filters():
      qb = _builder()
      q = qb.build_query(
          query_text="bags",
          query_vector=np.array([0.1, 0.2, 0.3]),
          range_filters={"min_price": {"gte": 50, "lt": 100}},
          enable_knn=True,
      )
  
      assert "knn" in q
      assert q["knn"]["filter"] == {"range": {"min_price": {"gte": 50, "lt": 100}}}
  
  
  def test_knn_prefilter_uses_only_conjunctive_filters_when_disjunctive_present():
      qb = _builder()
      facets = [SimpleNamespace(field="category_name", disjunctive=True)]
      q = qb.build_query(
          query_text="bags",
          query_vector=np.array([0.1, 0.2, 0.3]),
          filters={"category_name": ["A", "B"], "vendor": "Nike"},
          range_filters={"min_price": {"gte": 50, "lt": 100}},
          facet_configs=facets,
          enable_knn=True,
      )
  
      assert "knn" in q
      assert "filter" in q["knn"]
      knn_filter = q["knn"]["filter"]
      assert knn_filter == {
          "bool": {
              "filter": [
                  {"term": {"vendor": "Nike"}},
                  {"range": {"min_price": {"gte": 50, "lt": 100}}},
              ]
          }
      }
      assert q["post_filter"] == {"terms": {"category_name": ["A", "B"]}}
  
  
  def test_knn_prefilter_not_added_without_filters():
      qb = _builder()
      q = qb.build_query(
          query_text="bags",
          query_vector=np.array([0.1, 0.2, 0.3]),
          enable_knn=True,
      )
  
      assert "knn" in q
      assert "filter" not in q["knn"]

      assert q["knn"]["_name"] == "knn_query"

  def test_text_query_contains_only_base_and_translation_named_queries():

      qb = _builder()
      parsed_query = SimpleNamespace(

          rewritten_query="dress",

          detected_language="en",

          translations={"en": "dress", "zh": "连衣裙"},

      )
  

      q = qb.build_query(
          query_text="dress",
          parsed_query=parsed_query,
          enable_knn=False,

      )

      should = q["query"]["bool"]["should"]

      names = [clause["bool"]["_name"] for clause in should]

      assert names == ["base_query", "base_query_trans_zh"]
      base_should = q["query"]["bool"]["should"][0]["bool"]["should"]
      assert [clause["multi_match"]["type"] for clause in base_should] == ["best_fields", "phrase"]

  
  
  def test_text_query_skips_duplicate_translation_same_as_base():
      qb = _builder()
      parsed_query = SimpleNamespace(
          rewritten_query="dress",
          detected_language="en",
          translations={"en": "dress"},
      )
  
      q = qb.build_query(
          query_text="dress",
          parsed_query=parsed_query,
          enable_knn=False,

      )
  

      root = q["query"]

      assert root["bool"]["_name"] == "base_query"
      assert [clause["multi_match"]["type"] for clause in root["bool"]["should"]] == ["best_fields", "phrase"]