# 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
    base_url: "http://127.0.0.1:6005"
    providers:
      http:
        base_url: "http://127.0.0.1:6005"
    # 服务内文本后端（embedding 进程启动时读取）
    backend: "local_st"  # tei | local_st
    backends:
      tei:
        base_url: "http://127.0.0.1:8080"
        timeout_sec: 60
        model_id: "Qwen/Qwen3-Embedding-0.6B"
      local_st:
        model_id: "Qwen/Qwen3-Embedding-0.6B"
        device: "cuda"
        batch_size: 32
        normalize_embeddings: true
  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: "qwen3_vllm"  # 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: 256
        tensor_parallel_size: 1
        gpu_memory_utilization: 0.36
        dtype: "float16"
        enable_prefix_caching: true
        enforce_eager: false
        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"]