"""Configuration helper functions for dynamic multi-language search fields."""

  
  from typing import Dict, List

  
  from config.schema import SearchConfig

  def _format_field_with_boost(field_name: str, boost: float) -> str:
      if abs(float(boost) - 1.0) < 1e-9:
          return field_name
      return f"{field_name}^{boost}"
  
  
  def _get_boost(config: SearchConfig, base_field: str, language: str = "") -> float:
      lang = (language or "").strip().lower()
      if lang:
          lang_key = f"{base_field}.{lang}"
          if lang_key in config.field_boosts:
              return float(config.field_boosts[lang_key])
      if base_field in config.field_boosts:
          return float(config.field_boosts[base_field])
      return 1.0
  
  

  def get_match_fields_for_index(config: SearchConfig, index_name: str = "default") -> List[str]:
      """

      Deprecated compatibility wrapper.
  
      `indexes` is no longer used by runtime query building. This function now returns
      dynamic match fields for the default language based on query_config.search_fields.

      """

      del index_name
      lang = (config.query_config.default_language or "en").strip().lower()
      match_fields: List[str] = []
  
      for base_field in config.query_config.multilingual_fields:
          field_name = f"{base_field}.{lang}"
          match_fields.append(_format_field_with_boost(field_name, _get_boost(config, base_field, lang)))
  
      for shared_field in config.query_config.shared_fields:
          match_fields.append(_format_field_with_boost(shared_field, _get_boost(config, shared_field)))
  

      return match_fields
  
  
  def get_domain_fields(config: SearchConfig) -> Dict[str, List[str]]:
      """

      Get dynamic domain fields for compatibility with old diagnostics endpoints.
  

      Returns:

          A single `default` domain entry generated from dynamic search_fields.

      """

      return {"default": get_match_fields_for_index(config)}