"""
行情数据路由
处理行情数据查询和订阅
"""
from fastapi import APIRouter, Depends, Query, HTTPException, status
from typing import List, Optional
import logging

from ..models import (
    TickData, KlineRequest, KlineData, SubscribeRequest, UnsubscribeRequest, ApiResponse
)
from ..deps import get_current_user, get_vn_service

logger = logging.getLogger(__name__)

router = APIRouter()


@router.get("/contracts")
async def get_contracts(
    current_user: dict = Depends(get_current_user),
    vn_service=Depends(get_vn_service)
):
    """
    获取所有合约列表

    返回系统中所有已知的合约信息
    """
    contracts = await vn_service.get_contracts()
    return {
        "contracts": contracts,
        "total": len(contracts)
    }


@router.get("/contracts/{vt_symbol}")
async def get_contract(
    vt_symbol: str,
    current_user: dict = Depends(get_current_user),
    vn_service=Depends(get_vn_service)
):
    """
    获取单个合约详情

    - **vt_symbol**: 合约代码 (格式: symbol.exchange)
    """
    contract = await vn_service.get_contract(vt_symbol)
    if not contract:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"Contract {vt_symbol} not found"
        )
    return contract


@router.post("/subscribe")
async def subscribe_market(
    request: SubscribeRequest,
    current_user: dict = Depends(get_current_user),
    vn_service=Depends(get_vn_service)
):
    """
    订阅行情

    - **symbol**: 品种代码
    - **exchange**: 交易所
    - **gateway_name**: 网关名称（可选）
    """
    success = await vn_service.subscribe(
        symbol=request.symbol,
        exchange=request.exchange,
        gateway_name=request.gateway_name
    )

    if success:
        return ApiResponse(
            success=True,
            message=f"Subscribed to {request.symbol}.{request.exchange}"
        )
    else:
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to subscribe to {request.symbol}.{request.exchange}"
        )


@router.post("/unsubscribe")
async def unsubscribe_market(
    request: UnsubscribeRequest,
    current_user: dict = Depends(get_current_user),
    vn_service=Depends(get_vn_service)
):
    """
    取消订阅行情

    - **symbol**: 品种代码
    - **exchange**: 交易所
    - **gateway_name**: 网关名称（可选）
    """
    success = await vn_service.unsubscribe(
        symbol=request.symbol,
        exchange=request.exchange,
        gateway_name=request.gateway_name
    )

    if success:
        return ApiResponse(
            success=True,
            message=f"Unsubscribed from {request.symbol}.{request.exchange}"
        )
    else:
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to unsubscribe from {request.symbol}.{request.exchange}"
        )


@router.get("/ticks")
async def get_all_ticks(
    symbols: Optional[str] = Query(None, description="品种代码，逗号分隔"),
    current_user: dict = Depends(get_current_user),
    vn_service=Depends(get_vn_service)
):
    """
    获取当前行情缓存

    - **symbols**: 可选，过滤特定品种
    """
    symbol_list = symbols.split(",") if symbols else None
    ticks = await vn_service.get_ticks(symbol_list)

    return {
        "ticks": ticks,
        "total": len(ticks)
    }


@router.get("/ticks/{vt_symbol}")
async def get_tick(
    vt_symbol: str,
    current_user: dict = Depends(get_current_user),
    vn_service=Depends(get_vn_service)
):
    """
    获取指定合约行情

    - **vt_symbol**: 合约代码 (格式: symbol.exchange)
    """
    ticks = await vn_service.get_ticks([vt_symbol])
    if not ticks:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"No tick data for {vt_symbol}"
        )
    return ticks[0]


@router.post("/kline", response_model=List[KlineData])
async def get_kline_data(
    request: KlineRequest,
    current_user: dict = Depends(get_current_user),
    vn_service=Depends(get_vn_service)
):
    """
    获取 K线数据

    - **symbol**: 品种代码
    - **exchange**: 交易所
    - **interval**: 周期 (1m, 5m, 15m, 1h, 4h, 1d)
    - **start**: 开始时间（可选）
    - **end**: 结束时间（可选）
    - **limit**: 数据条数限制
    """
    # 占位实现，实际应从数据库获取
    logger.info(f"Kline request: {request.symbol}.{request.exchange} {request.interval}")
    return []