# Unified Configuration for Multi-Tenant Search Engine

  # 统一配置文件，所有租户共用一套配置
  # 注意：索引结构由 mappings/search_products.json 定义，此文件只配置搜索行为

  
  # Elasticsearch Index
  es_index_name: "search_products"
  

  # ES Index Settings (基础设置)

  es_settings:
    number_of_shards: 1
    number_of_replicas: 0
    refresh_interval: "30s"
  

  # 字段权重配置（用于搜索时的字段boost）
  # 只配置权重，不配置字段结构（字段结构由 mappings/search_products.json 定义）
  field_boosts:
    # 文本相关性字段

    "title.zh": 3.0
    "brief.zh": 1.5
    "description.zh": 1.0
    "vendor.zh": 1.5
    "title.en": 3.0
    "brief.en": 1.5
    "description.en": 1.0
    "vendor.en": 1.5

    # 分类相关字段

    "category_path.zh": 1.5
    "category_name_text.zh": 1.5
    "category_path.en": 1.5
    "category_name_text.en": 1.5

    
    # 标签和属性值字段
    tags: 1.0
    option1_values: 0.5
    option2_values: 0.5
    option3_values: 0.5
  
  # 搜索域配置（Query Domains）
  # 定义不同的搜索策略，指定哪些字段组合在一起搜索

  indexes:
    - name: "default"

      label: "默认搜索"

      fields:

        - "title.zh"
        - "brief.zh"
        - "description.zh"
        - "vendor.zh"

        - "tags"

        - "category_path.zh"
        - "category_name_text.zh"

        - "option1_values"

      boost: 1.0
  
    - name: "title"

      label: "标题搜索"

      fields:

        - "title.zh"

      boost: 2.0
  
    - name: "vendor"

      label: "品牌搜索"

      fields:

        - "vendor.zh"

      boost: 1.5
  
    - name: "category"

      label: "类目搜索"

      fields:

        - "category_path.zh"
        - "category_name_text.zh"

      boost: 1.5
  
    - name: "tags"

      label: "标签搜索"

      fields:
        - "tags"

      boost: 1.0
  

  # Query Configuration（查询配置）

  query_config:

    # 支持的语言

    supported_languages:
      - "zh"
      - "en"

    default_language: "en"

    # 功能开关（翻译开关由tenant_config控制）

    enable_text_embedding: true
    enable_query_rewrite: true

    enable_multilang_search: true  # 启用多语言搜索（使用翻译进行跨语言检索）

    # Embedding字段名称
    text_embedding_field: "title_embedding"
    image_embedding_field: null

    # Embedding禁用阈值（短查询不使用向量搜索）

    embedding_disable_thresholds:

      chinese_char_limit: 4
      english_word_limit: 3

    # 翻译API配置（provider/URL 在 services.translation）

    translation_service: "deepl"

    translation_api_key: null  # 通过环境变量设置

    # 翻译提示词配置（用于提高翻译质量，作为DeepL API的context参数）
    translation_prompts:
      # 商品标题翻译提示词
      product_title_zh: "请将原文翻译成中文商品SKU名称，要求：确保精确、完整地传达原文信息的基础上，语言简洁清晰、地道、专业。"
      product_title_en: "Translate the original text into an English product SKU name. Requirements: Ensure accurate and complete transmission of the original information, with concise, clear, authentic, and professional language."
      # query翻译提示词
      query_zh: "电商领域"
      query_en: "e-commerce domain"
      # 默认翻译用词
      default_zh: "电商领域"
      default_en: "e-commerce domain"
    

    # 返回字段配置（_source includes）
    # null表示返回所有字段，[]表示不返回任何字段，列表表示只返回指定字段
    source_fields: null

    
    # KNN boost配置（向量召回的boost值）
    knn_boost: 0.25  # Lower boost for embedding recall

  # Ranking Configuration（排序配置）

  ranking:

    expression: "bm25() + 0.25*text_embedding_relevance()"

    description: "BM25 text relevance combined with semantic embedding similarity"
  
  # Function Score配置（ES层打分规则）
  function_score:
    score_mode: "sum"
    boost_mode: "multiply"

    functions: []
  

  # 重排配置（provider/URL 在 services.rerank）

  rerank:

    rerank_window: 1000

    timeout_sec: 15.0

    weight_es: 0.4
    weight_ai: 0.6

    rerank_query_template: "{query}"
    rerank_doc_template: "{title}"

  # 可扩展服务/provider 注册表（单一配置源）
  services:
    translation:
      provider: "direct"  # direct | http | google(reserved)
      base_url: "http://127.0.0.1:6006"
      model: "qwen"
      timeout_sec: 10.0
      providers:
        direct:
          model: "qwen"
        http:
          base_url: "http://127.0.0.1:6006"
          model: "qwen"
          timeout_sec: 10.0
        google:
          enabled: false
          project_id: ""
          location: "global"
          model: ""
    embedding:
      provider: "http"  # http | vllm(reserved)
      base_url: "http://127.0.0.1:6005"
      providers:
        http:
          base_url: "http://127.0.0.1:6005"
        vllm:
          enabled: false
          base_url: ""
          model: ""
          note: "reserved for future vLLM embedding backend"
    rerank:

      provider: "http"

      base_url: "http://127.0.0.1:6007"
      providers:
        http:
          base_url: "http://127.0.0.1:6007"

          service_url: "http://127.0.0.1:6007/rerank"
      # 服务内后端（reranker 进程启动时读取）
      backend: "bge"  # bge | qwen3_vllm
      backends:
        bge:
          model_name: "BAAI/bge-reranker-v2-m3"
          device: null
          use_fp16: true
          batch_size: 64
          max_length: 512
          cache_dir: "./model_cache"
          enable_warmup: true
        qwen3_vllm:
          model_name: "Qwen/Qwen3-Reranker-0.6B"
          engine: "vllm"
          max_model_len: 8192
          tensor_parallel_size: 1
          gpu_memory_utilization: 0.8
          enable_prefix_caching: true
          instruction: "Given a web search query, retrieve relevant passages that answer the query"

  # SPU配置（已启用，使用嵌套skus）

  spu_config:
    enabled: true

    spu_field: "spu_id"

    inner_hits_size: 10

    # 配置哪些option维度参与检索（进索引、以及在线搜索）
    # 格式为list，选择option1/option2/option3中的一个或多个
    searchable_option_dimensions: ['option1', 'option2', 'option3']

  
  # 租户配置（Tenant Configuration）

  # 每个租户可配置主语言 primary_language 与索引语言 index_languages（主市场语言，商家可勾选）
  # 默认 index_languages: [en, zh]，可配置为任意 SUPPORTED_INDEX_LANGUAGES 的子集

  tenant_config:

    default:

      primary_language: "en"

      index_languages: ["en", "zh"]

    tenants:
      "1":
        primary_language: "zh"

        index_languages: ["zh", "en"]

      "2":
        primary_language: "en"

        index_languages: ["en", "zh"]

      "3":
        primary_language: "zh"

        index_languages: ["zh", "en"]

      "162":
        primary_language: "zh"

        index_languages: ["zh", "en"]

      "170":
        primary_language: "en"

        index_languages: ["en", "zh"]