# 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）
# 统一按“字段基名”配置；查询时按 search_langs 动态拼接 .{lang}。
# 若需要按某个语言单独调权，也可以加显式 key（例如 title.de: 3.2）。
field_boosts:
  title: 3.0
  brief: 1.5
  description: 1.0
  vendor: 1.5
  category_path: 1.5
  category_name_text: 1.5
  tags: 1.0
  option1_values: 0.5
  option2_values: 0.5
  option3_values: 0.5

# 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

  # 动态多语言检索字段配置
  # multilingual_fields 会被拼成 title.{lang}/brief.{lang}/... 形式；
  # shared_fields 为无语言后缀字段。
  search_fields:
    multilingual_fields:
      - "title"
      - "brief"
      - "description"
      - "vendor"
      - "category_path"
      - "category_name_text"
    shared_fields:
      - "tags"
      - "option1_values"
      - "option2_values"
      - "option3_values"
    core_multilingual_fields:
      - "title"
      - "brief"
      - "vendor"
      - "category_name_text"

  # 统一文本召回策略（主查询 + 翻译查询 + phrase/keywords）
  text_query_strategy:
    base_minimum_should_match: "75%"
    translation_minimum_should_match: "75%"
    translation_boost: 0.4
    translation_boost_when_source_missing: 1.0
    source_boost_when_missing: 0.6
    original_query_fallback_boost_when_translation_missing: 0.2
    keywords_boost: 0.1
    enable_phrase_query: true
    tie_breaker_base_query: 0.9
    tie_breaker_keywords: 0.9

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

  # 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

  # 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

# 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:
  enabled: true
  rerank_window: 384
  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: "llm"  # qwen-mt | deepl | http | llm
    base_url: "http://127.0.0.1:6006"
    model: "qwen-flash"
    timeout_sec: 10.0
    cache:
      enabled: true
      key_prefix: "trans:v2"
      ttl_seconds: 62208000
      sliding_expiration: true
      key_include_context: true
      key_include_prompt: true
      key_include_source_lang: true
    providers:
      qwen-mt:
        model: "qwen-mt-flush"
      http:
        base_url: "http://127.0.0.1:6006"
        model: "qwen-mt-flush"
        timeout_sec: 10.0
      llm:
        model: "qwen-flash"
        # 可选：覆盖 DashScope 兼容模式的 Endpoint 与超时
        # base_url 留空则使用 DASHSCOPE_BASE_URL 或默认地域
        base_url: ""
        timeout_sec: 30.0
      deepl:
        model: "deepl"
        timeout_sec: 10.0
        # 可选：用于术语表翻译（由 query_config.translation_glossary_id 衔接）
        glossary_id: ""
      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: "tei"  # tei | local_st
    backends:
      tei:
        base_url: "http://127.0.0.1:8080"
        timeout_sec: 20
        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 | qwen3_transformers | dashscope_rerank
    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
        infer_batch_size: 64
        sort_by_doc_length: true
        length_sort_mode: "char"  # char | token
        instruction: "Given a shopping query, rank product titles by relevance"
      qwen3_transformers:
        model_name: "Qwen/Qwen3-Reranker-0.6B"
        instruction: "Given a shopping query, rank product titles by relevance"
        max_length: 8192
        batch_size: 64
        use_fp16: true
        attn_implementation: "flash_attention_2"
      dashscope_rerank:
        model_name: "qwen3-rerank"
        # 按地域选择 endpoint:
        # 中国:   https://dashscope.aliyuncs.com/compatible-api/v1/reranks
        # 新加坡: https://dashscope-intl.aliyuncs.com/compatible-api/v1/reranks
        # 美国:   https://dashscope-us.aliyuncs.com/compatible-api/v1/reranks
        endpoint: "https://dashscope.aliyuncs.com/compatible-api/v1/reranks"
        api_key_env: "RERANK_DASHSCOPE_API_KEY_CN"
        timeout_sec: 10.0 # 
        top_n_cap: 0   # 0 表示 top_n=当前请求文档数；>0 则限制 top_n 上限
        batchsize: 64 # 0 关闭；>0 启用并发小包调度（top_n/top_n_cap 仍生效，分包后全局截断）
        instruct: "Given a shopping query, rank product titles by relevance"
        max_retries: 2
        retry_backoff_sec: 0.2

# 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"]