from __future__ import annotations
  

  from dataclasses import dataclass, field

  from pathlib import Path
  from types import SimpleNamespace
  from typing import Any, Dict, List
  

  import numpy as np

  import yaml
  
  from config import (
      ConfigLoader,

      FineRankConfig,

      FunctionScoreConfig,
      IndexConfig,
      QueryConfig,

      RerankConfig,
      SPUConfig,
      SearchConfig,
  )
  from context import create_request_context

  from query.style_intent import DetectedStyleIntent, StyleIntentProfile

  from search.searcher import Searcher
  
  
  @dataclass
  class _FakeParsedQuery:
      original_query: str
      query_normalized: str
      rewritten_query: str
      detected_language: str = "en"
      translations: Dict[str, str] = None

      keywords_queries: Dict[str, str] = field(default_factory=dict)

      query_vector: Any = None

      image_query_vector: Any = None
      query_tokens: List[str] = field(default_factory=list)

      style_intent_profile: Any = None

      def text_for_rerank(self) -> str:
          from query.query_parser import rerank_query_text
  
          return rerank_query_text(
              self.original_query,
              detected_language=self.detected_language,
              translations=self.translations,
          )
  

      def to_dict(self) -> Dict[str, Any]:
          return {
              "original_query": self.original_query,
              "query_normalized": self.query_normalized,
              "rewritten_query": self.rewritten_query,
              "detected_language": self.detected_language,
              "translations": self.translations or {},

              "style_intent_profile": (
                  self.style_intent_profile.to_dict() if self.style_intent_profile is not None else None
              ),

          }
  
  

  def _build_style_intent_profile(intent_type: str, canonical_value: str, *dimension_aliases: str) -> StyleIntentProfile:
      aliases = dimension_aliases or (intent_type,)
      return StyleIntentProfile(
          intents=(
              DetectedStyleIntent(
                  intent_type=intent_type,
                  canonical_value=canonical_value,
                  matched_term=canonical_value,
                  matched_query_text=canonical_value,

                  attribute_terms=(canonical_value,),

                  dimension_aliases=tuple(aliases),
              ),
          )
      )
  
  

  class _FakeQueryParser:

      def parse(
          self,
          query: str,
          tenant_id: str,
          generate_vector: bool,
          context: Any,
          target_languages: Any = None,
      ):

          return _FakeParsedQuery(
              original_query=query,
              query_normalized=query,
              rewritten_query=query,
              translations={},
          )
  
  
  class _FakeQueryBuilder:

      knn_text_k = 120
      knn_text_k_long = 160
      knn_text_num_candidates = 400
      knn_text_num_candidates_long = 500
      knn_text_boost = 20.0
      knn_image_k = 120
      knn_image_num_candidates = 400
      knn_image_boost = 20.0
  

      def build_query(self, **kwargs):
          return {
              "query": {"match_all": {}},
              "size": kwargs["size"],
              "from": kwargs["from_"],
          }
  
      def build_facets(self, facets: Any):
          return {}
  
      def add_sorting(self, es_query: Dict[str, Any], sort_by: str, sort_order: str):
          return es_query
  
  
  class _FakeESClient:
      def __init__(self, total_hits: int = 5000):
          self.calls: List[Dict[str, Any]] = []
          self.total_hits = total_hits
  
      @staticmethod
      def _apply_source_filter(src: Dict[str, Any], source_spec: Any) -> Dict[str, Any]:
          if source_spec is None:
              return dict(src)
          if source_spec is False:
              return {}
          if isinstance(source_spec, dict):
              includes = source_spec.get("includes") or []
          elif isinstance(source_spec, list):
              includes = source_spec
          else:
              includes = []
          if not includes:
              return dict(src)
          return {k: v for k, v in src.items() if k in set(includes)}
  
      @staticmethod
      def _full_source(doc_id: str) -> Dict[str, Any]:
          return {
              "spu_id": doc_id,
              "title": {"en": f"product-{doc_id}"},
              "brief": {"en": f"brief-{doc_id}"},
              "vendor": {"en": f"vendor-{doc_id}"},
              "skus": [],
          }
  

      def search(
          self,
          index_name: str,
          body: Dict[str, Any],
          size: int,
          from_: int,
          include_named_queries_score: bool = False,
      ):

          self.calls.append(

              {
                  "index_name": index_name,
                  "body": body,
                  "size": size,
                  "from_": from_,
                  "include_named_queries_score": include_named_queries_score,
              }

          )
          ids_query = (((body or {}).get("query") or {}).get("ids") or {}).get("values")
          source_spec = (body or {}).get("_source")
  
          if isinstance(ids_query, list):
              # Return reversed order intentionally; caller should restore original ranking order.
              ids = [str(i) for i in ids_query][::-1]
              hits = []
              for doc_id in ids:
                  src = self._apply_source_filter(self._full_source(doc_id), source_spec)
                  hit = {"_id": doc_id, "_score": 1.0}
                  if source_spec is not False:
                      hit["_source"] = src
                  hits.append(hit)
          else:
              end = min(from_ + size, self.total_hits)
              hits = []
              for i in range(from_, end):
                  doc_id = str(i)
                  src = self._apply_source_filter(self._full_source(doc_id), source_spec)
                  hit = {"_id": doc_id, "_score": float(self.total_hits - i)}
                  if source_spec is not False:
                      hit["_source"] = src
                  hits.append(hit)
  
          return {
              "took": 8,
              "hits": {
                  "total": {"value": self.total_hits},
                  "max_score": hits[0]["_score"] if hits else 0.0,
                  "hits": hits,
              },
          }
  
  

  def _build_search_config(*, rerank_enabled: bool = True, rerank_window: int = 384):

      return SearchConfig(
          field_boosts={"title.en": 3.0},
          indexes=[IndexConfig(name="default", label="default", fields=["title.en"])],
          query_config=QueryConfig(enable_text_embedding=False, enable_query_rewrite=False),

          function_score=FunctionScoreConfig(),
          rerank=RerankConfig(enabled=rerank_enabled, rerank_window=rerank_window),
          spu_config=SPUConfig(enabled=False),
          es_index_name="test_products",

          es_settings={},

      )
  
  
  def _build_searcher(config: SearchConfig, es_client: _FakeESClient) -> Searcher:
      searcher = Searcher(
          es_client=es_client,
          config=config,
          query_parser=_FakeQueryParser(),
      )
      searcher.query_builder = _FakeQueryBuilder()
      return searcher
  
  

  class _FakeTextEncoder:
      def __init__(self, vectors: Dict[str, List[float]]):
          self.vectors = {
              key: np.array(value, dtype=np.float32)
              for key, value in vectors.items()
          }
  
      def encode(self, sentences, priority: int = 0, **kwargs):
          if isinstance(sentences, str):
              sentences = [sentences]
          return np.array([self.vectors[text] for text in sentences], dtype=object)
  
  

  def test_config_loader_rerank_enabled_defaults_true(tmp_path: Path):
      config_data = {
          "es_index_name": "test_products",
          "field_boosts": {"title.en": 3.0},
          "indexes": [{"name": "default", "label": "default", "fields": ["title.en"]}],
          "query_config": {"supported_languages": ["en"], "default_language": "en"},

          "services": {
              "translation": {
                  "service_url": "http://localhost:6005",
                  "timeout_sec": 3.0,
                  "default_model": "dummy-model",
                  "default_scene": "general",
                  "cache": {
                      "ttl_seconds": 60,
                      "sliding_expiration": True,
                  },
                  "capabilities": {
                      "dummy-model": {
                          "enabled": True,
                          "backend": "llm",
                          "use_cache": True,
                          "model": "dummy-model",
                          "base_url": "http://localhost:6005/v1",
                          "timeout_sec": 3.0,
                      }
                  },
              },
              "embedding": {
                  "provider": "http",
                  "providers": {
                      "http": {
                          "text_base_url": "http://localhost:6005",
                          "image_base_url": "http://localhost:6008",
                      }
                  },
                  "backend": "tei",
                  "backends": {
                      "tei": {
                          "base_url": "http://localhost:8080",
                          "timeout_sec": 3.0,
                          "model_id": "dummy-embedding-model",
                      }
                  },
              },
              "rerank": {
                  "provider": "http",
                  "providers": {
                      "http": {
                          "base_url": "http://localhost:6007",
                          "service_url": "http://localhost:6007/rerank",
                      }
                  },
                  "backend": "bge",
                  "backends": {
                      "bge": {
                          "model_name": "dummy-rerank-model",
                          "device": "cpu",
                          "use_fp16": False,
                          "batch_size": 8,
                          "max_length": 128,
                          "cache_dir": "./model_cache",
                          "enable_warmup": False,
                      }
                  },
              },
          },

          "spu_config": {"enabled": False},

          "function_score": {"score_mode": "sum", "boost_mode": "multiply", "functions": []},

          "rerank": {"rerank_window": 384},

      }
      config_path = tmp_path / "config.yaml"
      config_path.write_text(yaml.safe_dump(config_data), encoding="utf-8")
  
      loader = ConfigLoader(config_path)
      loaded = loader.load_config(validate=False)
  
      assert loaded.rerank.enabled is True
  
  

  def test_config_loader_parses_named_rerank_instances(tmp_path: Path):
      from config.loader import AppConfigLoader
  
      config_data = {
          "es_index_name": "test_products",
          "field_boosts": {"title.en": 3.0},
          "indexes": [{"name": "default", "label": "default", "fields": ["title.en"]}],
          "query_config": {"supported_languages": ["en"], "default_language": "en"},
          "services": {
              "translation": {
                  "service_url": "http://localhost:6005",
                  "timeout_sec": 3.0,
                  "default_model": "dummy-model",
                  "default_scene": "general",
                  "cache": {"ttl_seconds": 60, "sliding_expiration": True},
                  "capabilities": {
                      "dummy-model": {
                          "enabled": True,
                          "backend": "llm",
                          "model": "dummy-model",
                          "base_url": "http://localhost:6005/v1",
                          "timeout_sec": 3.0,
                          "use_cache": True,
                      }
                  },
              },
              "embedding": {
                  "provider": "http",
                  "providers": {"http": {"text_base_url": "http://localhost:6005", "image_base_url": "http://localhost:6008"}},
                  "backend": "tei",
                  "backends": {"tei": {"base_url": "http://localhost:8080", "model_id": "dummy-embedding-model"}},
              },
              "rerank": {
                  "provider": "http",
                  "providers": {
                      "http": {
                          "instances": {
                              "default": {"service_url": "http://localhost:6007/rerank"},
                              "fine": {"service_url": "http://localhost:6009/rerank"},
                          }
                      }
                  },
                  "default_instance": "default",
                  "instances": {
                      "default": {"port": 6007, "backend": "qwen3_vllm_score"},
                      "fine": {"port": 6009, "backend": "bge"},
                  },
                  "backends": {
                      "bge": {"model_name": "BAAI/bge-reranker-v2-m3"},
                      "qwen3_vllm_score": {"model_name": "Qwen/Qwen3-Reranker-0.6B"},
                  },
              },
          },
          "spu_config": {"enabled": False},
          "function_score": {"score_mode": "sum", "boost_mode": "multiply", "functions": []},
      }
      config_path = tmp_path / "config.yaml"
      config_path.write_text(yaml.safe_dump(config_data), encoding="utf-8")
  
      loader = AppConfigLoader(config_file=config_path)
      loaded = loader.load(validate=False)
  
      assert loaded.services.rerank.default_instance == "default"
      assert loaded.services.rerank.get_instance("fine").port == 6009
      assert loaded.services.rerank.get_instance("fine").backend == "bge"
  
  

  def test_searcher_reranks_top_window_by_default(monkeypatch):
      es_client = _FakeESClient()
      searcher = _build_searcher(_build_search_config(rerank_enabled=True), es_client)
      context = create_request_context(reqid="t1", uid="u1")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )
  
      called: Dict[str, Any] = {"count": 0, "docs": 0}
  

      def _fake_run_lightweight_rerank(**kwargs):
          hits = kwargs["es_hits"]
          for idx, hit in enumerate(hits):
              hit["_fine_score"] = float(len(hits) - idx)
          return [hit["_fine_score"] for hit in hits], {"stage": "fine"}, []
  

      def _fake_run_rerank(**kwargs):
          called["count"] += 1
          called["docs"] = len(kwargs["es_response"]["hits"]["hits"])
          return kwargs["es_response"], None, []
  

      monkeypatch.setattr("search.rerank_client.run_lightweight_rerank", _fake_run_lightweight_rerank)

      monkeypatch.setattr("search.rerank_client.run_rerank", _fake_run_rerank)
  
      result = searcher.search(
          query="toy",
          tenant_id="162",
          from_=20,
          size=10,
          context=context,
          enable_rerank=None,
      )
  
      assert called["count"] == 1

      assert called["docs"] == searcher.config.rerank.rerank_window

      assert es_client.calls[0]["from_"] == 0

      assert es_client.calls[0]["size"] == searcher.config.coarse_rank.input_window

      assert es_client.calls[0]["include_named_queries_score"] is True

      assert es_client.calls[0]["body"]["_source"] is False
      assert len(es_client.calls) == 3
      assert es_client.calls[1]["size"] == max(
          searcher.config.coarse_rank.output_window,
          searcher.config.rerank.rerank_window,
      )

      assert es_client.calls[1]["from_"] == 0

      assert es_client.calls[2]["size"] == 10
      assert es_client.calls[2]["from_"] == 0
      assert es_client.calls[2]["body"]["query"]["ids"]["values"] == [str(i) for i in range(20, 30)]

      assert len(result.results) == 10
      assert result.results[0].spu_id == "20"
      assert result.results[0].brief == "brief-20"
  
  

  def test_searcher_debug_info_exposes_ranking_funnel(monkeypatch):
      es_client = _FakeESClient(total_hits=120)
      searcher = _build_searcher(_build_search_config(rerank_enabled=True, rerank_window=20), es_client)
      context = create_request_context(reqid="t-debug", uid="u-debug")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )
  
      def _fake_run_lightweight_rerank(**kwargs):
          hits = kwargs["es_hits"]
          scores = []
          debug_rows = []
          for idx, hit in enumerate(hits):
              score = float(len(hits) - idx)
              hit["_fine_score"] = score
              scores.append(score)
              debug_rows.append(
                  {
                      "doc_id": hit["_id"],
                      "fine_score": score,
                      "rerank_input": {"doc_preview": f"product-{hit['_id']}"},
                  }
              )
          hits.sort(key=lambda item: item["_fine_score"], reverse=True)
          return scores, {"model": "fine-bge"}, debug_rows
  
      def _fake_run_rerank(**kwargs):
          hits = kwargs["es_response"]["hits"]["hits"]
          fused_debug = []
          for idx, hit in enumerate(hits):
              hit["_rerank_score"] = 10.0 - idx
              hit["_fused_score"] = 100.0 - idx
              hit["_text_score"] = hit.get("_score", 0.0)
              hit["_knn_score"] = 0.0
              fused_debug.append(
                  {
                      "doc_id": hit["_id"],
                      "rerank_score": hit["_rerank_score"],
                      "fine_score": hit.get("_fine_score"),
                      "text_score": hit["_text_score"],
                      "knn_score": 0.0,
                      "rerank_factor": 1.0,
                      "fine_factor": 1.0,
                      "text_factor": 1.0,
                      "knn_factor": 1.0,
                      "fused_score": hit["_fused_score"],
                      "matched_queries": {},
                      "rerank_input": {"doc_preview": f"product-{hit['_id']}"},
                  }
              )
          return kwargs["es_response"], {"model": "final-reranker"}, fused_debug
  
      monkeypatch.setattr("search.rerank_client.run_lightweight_rerank", _fake_run_lightweight_rerank)
      monkeypatch.setattr("search.rerank_client.run_rerank", _fake_run_rerank)
  
      result = searcher.search(
          query="toy",
          tenant_id="162",
          from_=0,
          size=5,
          context=context,
          enable_rerank=True,
          debug=True,
      )
  
      assert result.debug_info["ranking_funnel"]["fine_rank"]["docs_out"] == 80
      assert result.debug_info["ranking_funnel"]["rerank"]["docs_out"] == 20
      first = result.debug_info["per_result"][0]["ranking_funnel"]
      assert first["es_recall"]["rank"] is not None
      assert first["coarse_rank"]["score"] is not None
      assert first["fine_rank"]["score"] is not None
      assert first["rerank"]["rerank_score"] is not None
  
  

  def test_searcher_rerank_prefetch_source_follows_doc_template(monkeypatch):
      es_client = _FakeESClient()
      searcher = _build_searcher(_build_search_config(rerank_enabled=True), es_client)
      context = create_request_context(reqid="t1b", uid="u1b")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )

      monkeypatch.setattr(
          "search.rerank_client.run_lightweight_rerank",
          lambda **kwargs: ([1.0] * len(kwargs["es_hits"]), {"stage": "fine"}, []),
      )

      monkeypatch.setattr("search.rerank_client.run_rerank", lambda **kwargs: (kwargs["es_response"], None, []))
  
      searcher.search(
          query="toy",
          tenant_id="162",
          from_=0,
          size=5,
          context=context,
          enable_rerank=None,
          rerank_doc_template="{title} {vendor} {brief}",
      )
  

      assert es_client.calls[0]["body"]["_source"] is False
      assert es_client.calls[1]["body"]["_source"] == {"includes": ["brief", "title", "vendor"]}

  def test_searcher_rerank_prefetch_source_includes_sku_fields_when_style_intent_active(monkeypatch):
      es_client = _FakeESClient()
      searcher = _build_searcher(_build_search_config(rerank_enabled=True), es_client)
      context = create_request_context(reqid="t1c", uid="u1c")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )
      monkeypatch.setattr(

          "search.rerank_client.run_lightweight_rerank",
          lambda **kwargs: ([1.0] * len(kwargs["es_hits"]), {"stage": "fine"}, []),
      )
      monkeypatch.setattr(

          "search.rerank_client.run_rerank",
          lambda **kwargs: (kwargs["es_response"], None, []),
      )
  
      class _IntentQueryParser:
          text_encoder = None
  
          def parse(
              self,
              query: str,
              tenant_id: str,
              generate_vector: bool,
              context: Any,
              target_languages: Any = None,
          ):
              return _FakeParsedQuery(
                  original_query=query,
                  query_normalized=query,
                  rewritten_query=query,
                  translations={},
                  style_intent_profile=_build_style_intent_profile(
                      "color", "black", "color", "colors", "颜色"
                  ),
              )
  
      searcher.query_parser = _IntentQueryParser()
  
      searcher.search(
          query="black dress",
          tenant_id="162",
          from_=0,
          size=5,
          context=context,
          enable_rerank=None,
      )
  

      assert es_client.calls[0]["body"]["_source"] is False
      assert es_client.calls[1]["body"]["_source"] == {

          "includes": ["option1_name", "option2_name", "option3_name", "skus", "title"]
      }
  
  

  def test_searcher_keeps_previous_stage_order_when_request_explicitly_disables_rerank(monkeypatch):

      es_client = _FakeESClient()
      searcher = _build_searcher(_build_search_config(rerank_enabled=True), es_client)
      context = create_request_context(reqid="t2", uid="u2")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )
  

      called: Dict[str, int] = {"count": 0, "fine": 0}
  
      def _fake_run_lightweight_rerank(**kwargs):
          called["fine"] += 1
          hits = kwargs["es_hits"]
          for idx, hit in enumerate(hits):
              hit["_fine_score"] = float(idx + 1)
          hits.reverse()
          return [hit["_fine_score"] for hit in hits], {"stage": "fine"}, []

  
      def _fake_run_rerank(**kwargs):
          called["count"] += 1
          return kwargs["es_response"], None, []
  

      monkeypatch.setattr("search.rerank_client.run_lightweight_rerank", _fake_run_lightweight_rerank)

      monkeypatch.setattr("search.rerank_client.run_rerank", _fake_run_rerank)
  

      result = searcher.search(

          query="toy",
          tenant_id="162",
          from_=20,
          size=10,
          context=context,
          enable_rerank=False,

          debug=True,

      )
  
      assert called["count"] == 0

      assert called["fine"] == 1
      assert es_client.calls[0]["from_"] == 0
      assert es_client.calls[0]["size"] == searcher.config.coarse_rank.input_window
      assert es_client.calls[0]["include_named_queries_score"] is True
      assert len(es_client.calls) == 3
      assert es_client.calls[2]["body"]["query"]["ids"]["values"] == [str(i) for i in range(363, 353, -1)]
      assert len(result.results) == 10
      assert [item.spu_id for item in result.results[:3]] == ["363", "362", "361"]
      assert result.debug_info["rerank"]["enabled"] is False
      assert result.debug_info["rerank"]["applied"] is False
      assert result.debug_info["rerank"]["skipped_reason"] == "disabled"
      assert result.debug_info["per_result"][0]["ranking_funnel"]["rerank"]["rank"] == 21
  
  
  def test_searcher_keeps_previous_stage_order_when_config_disables_rerank(monkeypatch):
      es_client = _FakeESClient()
      searcher = _build_searcher(_build_search_config(rerank_enabled=False), es_client)
      context = create_request_context(reqid="t2b", uid="u2b")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )
  
      called: Dict[str, int] = {"count": 0, "fine": 0}
  
      def _fake_run_lightweight_rerank(**kwargs):
          called["fine"] += 1
          hits = kwargs["es_hits"]
          hits.reverse()
          for idx, hit in enumerate(hits):
              hit["_fine_score"] = float(len(hits) - idx)
          return [hit["_fine_score"] for hit in hits], {"stage": "fine"}, []
  
      def _fake_run_rerank(**kwargs):
          called["count"] += 1
          return kwargs["es_response"], None, []
  
      monkeypatch.setattr("search.rerank_client.run_lightweight_rerank", _fake_run_lightweight_rerank)
      monkeypatch.setattr("search.rerank_client.run_rerank", _fake_run_rerank)
  
      result = searcher.search(
          query="toy",
          tenant_id="162",
          from_=0,
          size=5,
          context=context,
          enable_rerank=None,
          debug=True,
      )
  
      assert called["count"] == 0
      assert called["fine"] == 1
      assert es_client.calls[0]["from_"] == 0
      assert es_client.calls[0]["size"] == searcher.config.coarse_rank.input_window
      assert es_client.calls[0]["include_named_queries_score"] is True
      assert len(result.results) == 5
      assert [item.spu_id for item in result.results] == ["383", "382", "381", "380", "379"]
      assert result.debug_info["rerank"]["enabled"] is False
      assert result.debug_info["rerank"]["applied"] is False
      assert result.debug_info["rerank"]["skipped_reason"] == "disabled"

  
  
  def test_searcher_skips_rerank_when_page_exceeds_window(monkeypatch):
      es_client = _FakeESClient()

      searcher = _build_searcher(_build_search_config(rerank_enabled=True, rerank_window=384), es_client)

      context = create_request_context(reqid="t3", uid="u3")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )
  
      called: Dict[str, int] = {"count": 0}
  
      def _fake_run_rerank(**kwargs):
          called["count"] += 1
          return kwargs["es_response"], None, []
  
      monkeypatch.setattr("search.rerank_client.run_rerank", _fake_run_rerank)
  
      searcher.search(
          query="toy",
          tenant_id="162",
          from_=995,
          size=10,
          context=context,
          enable_rerank=None,
      )
  
      assert called["count"] == 0
      assert es_client.calls[0]["from_"] == 995
      assert es_client.calls[0]["size"] == 10

      assert es_client.calls[0]["include_named_queries_score"] is False

      assert len(es_client.calls) == 1

  
  
  def test_searcher_promotes_sku_when_option1_matches_translated_query(monkeypatch):
      es_client = _FakeESClient(total_hits=1)
      searcher = _build_searcher(_build_search_config(rerank_enabled=False), es_client)
      context = create_request_context(reqid="sku-text", uid="u-sku-text")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en", "zh"]}),
      )
  
      class _TranslatedQueryParser:
          text_encoder = None
  

          def parse(
              self,
              query: str,
              tenant_id: str,
              generate_vector: bool,
              context: Any,
              target_languages: Any = None,
          ):

              return _FakeParsedQuery(
                  original_query=query,
                  query_normalized=query,
                  rewritten_query=query,
                  translations={"en": "black dress"},

                  style_intent_profile=_build_style_intent_profile(
                      "color", "black", "color", "colors", "颜色"
                  ),

              )
  
      searcher.query_parser = _TranslatedQueryParser()
  
      def _full_source_with_skus(doc_id: str) -> Dict[str, Any]:
          return {
              "spu_id": doc_id,
              "title": {"en": f"product-{doc_id}"},
              "brief": {"en": f"brief-{doc_id}"},
              "vendor": {"en": f"vendor-{doc_id}"},

              "option1_name": "Color",

              "image_url": "https://img/default.jpg",
              "skus": [
                  {"sku_id": "sku-red", "option1_value": "Red", "image_src": "https://img/red.jpg"},
                  {"sku_id": "sku-black", "option1_value": "Black", "image_src": "https://img/black.jpg"},
              ],
          }
  
      monkeypatch.setattr(_FakeESClient, "_full_source", staticmethod(_full_source_with_skus))
  
      result = searcher.search(
          query="黑色 连衣裙",
          tenant_id="162",
          from_=0,
          size=1,
          context=context,
          enable_rerank=False,
      )
  
      assert len(result.results) == 1
      assert result.results[0].skus[0].sku_id == "sku-black"
      assert result.results[0].image_url == "https://img/black.jpg"
  
  

  def test_searcher_uses_first_text_match_without_comparing_all_matches(monkeypatch):
      es_client = _FakeESClient(total_hits=1)
      searcher = _build_searcher(_build_search_config(rerank_enabled=False), es_client)
      context = create_request_context(reqid="sku-first-text", uid="u-sku-first-text")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )
  
      class _TextMatchQueryParser:
          text_encoder = None
  
          def parse(
              self,
              query: str,
              tenant_id: str,
              generate_vector: bool,
              context: Any,
              target_languages: Any = None,
          ):
              return _FakeParsedQuery(
                  original_query=query,
                  query_normalized=query,
                  rewritten_query=query,
                  translations={},
                  style_intent_profile=_build_style_intent_profile(
                      "color", "black", "color", "colors", "颜色"
                  ),
              )
  
      searcher.query_parser = _TextMatchQueryParser()
  
      def _full_source_with_multiple_text_matches(doc_id: str) -> Dict[str, Any]:
          return {
              "spu_id": doc_id,
              "title": {"en": f"product-{doc_id}"},
              "brief": {"en": f"brief-{doc_id}"},
              "vendor": {"en": f"vendor-{doc_id}"},
              "option1_name": "Color",
              "image_url": "https://img/default.jpg",
              "skus": [
                  {"sku_id": "sku-red", "option1_value": "Red", "image_src": "https://img/red.jpg"},
                  {
                      "sku_id": "sku-gloss-black",
                      "option1_value": "Gloss Black",
                      "image_src": "https://img/gloss-black.jpg",
                  },
                  {"sku_id": "sku-black", "option1_value": "Black", "image_src": "https://img/black.jpg"},
              ],
          }
  
      monkeypatch.setattr(_FakeESClient, "_full_source", staticmethod(_full_source_with_multiple_text_matches))
  
      result = searcher.search(
          query="black dress",
          tenant_id="162",
          from_=0,
          size=1,
          context=context,
          enable_rerank=False,
      )
  
      assert len(result.results) == 1
      assert result.results[0].skus[0].sku_id == "sku-gloss-black"
      assert result.results[0].image_url == "https://img/gloss-black.jpg"
  
  
  def test_searcher_skips_sku_selection_when_option_name_does_not_match_dimension_alias(monkeypatch):
      es_client = _FakeESClient(total_hits=1)
      searcher = _build_searcher(_build_search_config(rerank_enabled=False), es_client)
      context = create_request_context(reqid="sku-unresolved-dimension", uid="u-sku-unresolved-dimension")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en", "zh"]}),
      )
  
      class _UnresolvedDimensionQueryParser:
          text_encoder = None
  
          def parse(
              self,
              query: str,
              tenant_id: str,
              generate_vector: bool,
              context: Any,
              target_languages: Any = None,
          ):
              return _FakeParsedQuery(
                  original_query=query,
                  query_normalized=query,
                  rewritten_query=query,
                  translations={"en": "black dress"},
                  style_intent_profile=_build_style_intent_profile(
                      "color", "black", "color", "colors", "颜色"
                  ),
              )
  
      searcher.query_parser = _UnresolvedDimensionQueryParser()
  
      def _full_source_with_unmatched_option_name(doc_id: str) -> Dict[str, Any]:
          return {
              "spu_id": doc_id,
              "title": {"en": f"product-{doc_id}"},
              "brief": {"en": f"brief-{doc_id}"},
              "vendor": {"en": f"vendor-{doc_id}"},
              "option1_name": "Tone",
              "image_url": "https://img/default.jpg",
              "skus": [
                  {"sku_id": "sku-red", "option1_value": "Red", "image_src": "https://img/red.jpg"},
                  {"sku_id": "sku-black", "option1_value": "Black", "image_src": "https://img/black.jpg"},
              ],
          }
  
      monkeypatch.setattr(_FakeESClient, "_full_source", staticmethod(_full_source_with_unmatched_option_name))
  
      result = searcher.search(
          query="黑色 连衣裙",
          tenant_id="162",
          from_=0,
          size=1,
          context=context,
          enable_rerank=False,
      )
  
      assert len(result.results) == 1
      assert result.results[0].skus[0].sku_id == "sku-red"
      assert result.results[0].image_url == "https://img/default.jpg"
  
  

  def test_searcher_promotes_sku_by_embedding_when_query_has_no_direct_option_match(monkeypatch):
      es_client = _FakeESClient(total_hits=1)
      searcher = _build_searcher(_build_search_config(rerank_enabled=False), es_client)
      context = create_request_context(reqid="sku-embed", uid="u-sku-embed")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )
  
      encoder = _FakeTextEncoder(
          {
              "linen summer dress": [0.8, 0.2],

              "red": [1.0, 0.0],
              "blue": [0.0, 1.0],

          }
      )
  
      class _EmbeddingQueryParser:
          text_encoder = encoder
  

          def parse(
              self,
              query: str,
              tenant_id: str,
              generate_vector: bool,
              context: Any,
              target_languages: Any = None,
          ):

              return _FakeParsedQuery(
                  original_query=query,
                  query_normalized=query,
                  rewritten_query=query,
                  translations={},
                  query_vector=np.array([0.0, 1.0], dtype=np.float32),

                  style_intent_profile=_build_style_intent_profile(
                      "color", "blue", "color", "colors", "颜色"
                  ),

              )
  
      searcher.query_parser = _EmbeddingQueryParser()
  
      def _full_source_with_skus(doc_id: str) -> Dict[str, Any]:
          return {
              "spu_id": doc_id,
              "title": {"en": f"product-{doc_id}"},
              "brief": {"en": f"brief-{doc_id}"},
              "vendor": {"en": f"vendor-{doc_id}"},

              "option1_name": "Color",

              "image_url": "https://img/default.jpg",
              "skus": [
                  {"sku_id": "sku-red", "option1_value": "Red", "image_src": "https://img/red.jpg"},
                  {"sku_id": "sku-blue", "option1_value": "Blue", "image_src": "https://img/blue.jpg"},
              ],
          }
  
      monkeypatch.setattr(_FakeESClient, "_full_source", staticmethod(_full_source_with_skus))
  
      result = searcher.search(
          query="linen summer dress",
          tenant_id="162",
          from_=0,
          size=1,
          context=context,
          enable_rerank=False,
      )
  
      assert len(result.results) == 1
      assert result.results[0].skus[0].sku_id == "sku-blue"
      assert result.results[0].image_url == "https://img/blue.jpg"

  def test_searcher_debug_info_uses_initial_es_max_score_for_normalization(monkeypatch):

      es_client = _FakeESClient(total_hits=3)

      cfg = _build_search_config(rerank_enabled=False)
      searcher = _build_searcher(cfg, es_client)

      context = create_request_context(reqid="dbg", uid="u-dbg")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en", "zh"]}),
      )
  
      result = searcher.search(
          query="toy",
          tenant_id="162",
          from_=0,
          size=2,
          context=context,
          enable_rerank=False,
          debug=True,
      )
  
      assert result.debug_info["query_analysis"]["index_languages"] == ["en", "zh"]

      assert result.debug_info["query_analysis"]["query_tokens"] == []

      expected_es_fetch = max(cfg.rerank.rerank_window, cfg.coarse_rank.input_window)
      assert result.debug_info["es_query_context"]["es_fetch_size"] == expected_es_fetch

      assert result.debug_info["es_response"]["es_score_normalization_factor"] == 3.0

      assert result.debug_info["per_result"][0]["initial_rank"] == 1
      assert result.debug_info["per_result"][0]["final_rank"] == 1
      assert result.debug_info["per_result"][0]["es_score_normalized"] == 1.0

      assert result.debug_info["per_result"][1]["es_score_normalized"] == 2.0 / 3.0

  
  
  def test_searcher_rerank_rank_change_falls_back_to_coarse_rank_when_fine_disabled(monkeypatch):
      es_client = _FakeESClient(total_hits=5)
      config = _build_search_config(rerank_enabled=True, rerank_window=5)
      config = SearchConfig(
          field_boosts=config.field_boosts,
          indexes=config.indexes,
          query_config=config.query_config,
          function_score=config.function_score,
          coarse_rank=config.coarse_rank,
          fine_rank=FineRankConfig(enabled=False, input_window=5, output_window=5),
          rerank=config.rerank,
          spu_config=config.spu_config,
          es_index_name=config.es_index_name,
          es_settings=config.es_settings,
      )
      searcher = _build_searcher(config, es_client)
      context = create_request_context(reqid="rank-fallback", uid="u-rank-fallback")
  
      monkeypatch.setattr(
          "search.searcher.get_tenant_config_loader",
          lambda: SimpleNamespace(get_tenant_config=lambda tenant_id: {"index_languages": ["en"]}),
      )
  

      fine_called: Dict[str, int] = {"count": 0}
  
      def _fake_run_lightweight_rerank(**kwargs):
          fine_called["count"] += 1
          return [], {"stage": "fine"}, []