import traceback
import uuid
from typing import Dict, Any

from quart import Blueprint, jsonify, request

from applications.config import (
    DEFAULT_MODEL,
    LOCAL_MODEL_CONFIG,
    ChunkerConfig,
    BASE_MILVUS_SEARCH_PARAMS,
)
from applications.resource import get_resource_manager
from applications.api import get_basic_embedding
from applications.api import get_img_embedding
from applications.async_task import ChunkEmbeddingTask
from applications.search import HybridSearch


server_bp = Blueprint("api", __name__, url_prefix="/api")


@server_bp.route("/embed", methods=["POST"])
async def embed():
    body = await request.get_json()
    text = body.get("text")
    model_name = body.get("model", DEFAULT_MODEL)
    if not LOCAL_MODEL_CONFIG.get(model_name):
        return jsonify({"error": "error  model"})

    embedding = await get_basic_embedding(text, model_name)
    return jsonify({"embedding": embedding})


@server_bp.route("/img_embed", methods=["POST"])
async def img_embed():
    body = await request.get_json()
    url_list = body.get("url_list")
    if not url_list:
        return jsonify({"error": "error  url_list"})

    embedding = await get_img_embedding(url_list)
    return jsonify(embedding)


@server_bp.route("/chunk", methods=["POST"])
async def chunk():
    body = await request.get_json()
    text = body.get("text", "")
    text = text.strip()
    if not text:
        return jsonify({"error": "error  text"})
    resource = get_resource_manager()
    doc_id = f"doc-{uuid.uuid4()}"
    chunk_task = ChunkEmbeddingTask(
        resource.mysql_client,
        resource.milvus_client,
        cfg=ChunkerConfig(),
        doc_id=doc_id,
        es_pool=resource.es_client,
    )
    doc_id = await chunk_task.deal(body)
    return jsonify({"doc_id": doc_id})


@server_bp.route("/search", methods=["POST"])
async def search():
    """
    filters: Dict[str, Any], # 条件过滤
    query_vec: List[float], # query 的向量
    anns_field: str = "vector_text", # query指定的向量空间
    search_params: Optional[Dict[str, Any]] = None, # 向量距离方式
    query_text: str = None, #是否通过 topic 倒排
    _source=False, # 是否返回元数据
    es_size: int = 10000, #es 第一层过滤数量
    sort_by: str = None, # 排序
    milvus_size: int = 10 # milvus粗排返回数量
    :return:
    """
    body = await request.get_json()

    # 解析数据
    search_type: str = body.get("search_type")
    filters: Dict[str, Any] = body.get("filters", {})
    anns_field: str = body.get("anns_field", "vector_text")
    search_params: Dict[str, Any] = body.get("search_params", BASE_MILVUS_SEARCH_PARAMS)
    query_text: str = body.get("query_text")
    _source: bool = body.get("_source", False)
    es_size: int = body.get("es_size", 10000)
    sort_by: str = body.get("sort_by")
    milvus_size: int = body.get("milvus", 20)
    limit: int = body.get("limit", 10)
    if not query_text:
        return jsonify({"error": "error  query_text"})

    query_vector = await get_basic_embedding(text=query_text, model=DEFAULT_MODEL)
    resource = get_resource_manager()
    search_engine = HybridSearch(
        milvus_pool=resource.milvus_client, es_pool=resource.es_client
    )
    try:
        match search_type:
            case "base":
                response = await search_engine.base_vector_search(
                    query_vec=query_vector,
                    anns_field=anns_field,
                    search_params=search_params,
                    limit=limit,
                )
                return jsonify(response), 200
            case "hybrid":
                response = await search_engine.hybrid_search(
                    filters=filters,
                    query_vec=query_vector,
                    anns_field=anns_field,
                    search_params=search_params,
                    es_size=es_size,
                    sort_by=sort_by,
                    milvus_size=milvus_size,
                )
                return jsonify(response), 200
            case "strategy":
                return jsonify({"error": "strategy not implemented"}), 405
            case _:
                return jsonify({"error": "error  search_type"}), 200
    except Exception as e:
        return jsonify({"error": str(e), "traceback": traceback.format_exc()}), 500