# backend/app/api/v2/quality.py
"""
数据质量监控 API 接口
支持质量评分查询、问题列表、监控规则管理
"""

from typing import Optional, List
from datetime import datetime
from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy.orm import Session
from app.db.base import get_db
from app.middleware.auth import get_current_user
from app.models.user import User
from app.services.quality_monitor import quality_monitor, QualityMetric, QualityLevel
import logging

logger = logging.getLogger(__name__)

router = APIRouter(prefix="/api/v2/quality", tags=["质量监控"])


@router.get("/score", summary="查询质量评分")
async def get_quality_score(
    symbol: Optional[str] = Query(None, description="品种代码，为空则查询所有品种"),
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """
    查询数据质量评分
    
    返回完整性、准确性、及时性、一致性四维评分
    """
    try:
        if symbol:
            # 查询单个品种
            scores = await quality_monitor.calculate_overall_score(db, symbol)
            return {
                "symbol": symbol,
                "scores": scores
            }
        else:
            # 查询所有品种
            results = await quality_monitor.check_all_symbols(db)
            return {
                "total_symbols": len(results),
                "scores": results,
                "statistics": quality_monitor.get_statistics()
            }
    
    except Exception as e:
        logger.error(f"❌ 查询质量评分失败: {e}")
        raise HTTPException(status_code=500, detail=f"查询质量评分失败: {str(e)}")


@router.get("/issues", summary="查询问题列表")
async def get_quality_issues(
    page: int = Query(1, ge=1, description="页码"),
    page_size: int = Query(20, ge=1, le=100, description="每页数量"),
    symbol: Optional[str] = Query(None, description="品种代码筛选"),
    metric: Optional[QualityMetric] = Query(None, description="质量指标筛选"),
    level: Optional[QualityLevel] = Query(None, description="告警级别筛选"),
    current_user: User = Depends(get_current_user)
):
    """
    查询数据质量问题列表
    
    支持按品种、指标、级别筛选
    """
    try:
        # 获取问题列表
        all_issues = quality_monitor.get_issues(1000)
        
        # 筛选
        filtered_issues = all_issues
        
        if symbol:
            filtered_issues = [i for i in filtered_issues if i.get("symbol") == symbol]
        
        if metric:
            filtered_issues = [i for i in filtered_issues if i.get("metric") == metric.value]
        
        if level:
            filtered_issues = [i for i in filtered_issues if i.get("level") == level.value]
        
        # 总数
        total = len(filtered_issues)
        
        # 分页
        start = (page - 1) * page_size
        end = start + page_size
        page_issues = filtered_issues[start:end]
        
        return {
            "total": total,
            "page": page,
            "page_size": page_size,
            "items": page_issues
        }
    
    except Exception as e:
        logger.error(f"❌ 查询问题列表失败: {e}")
        raise HTTPException(status_code=500, detail=f"查询问题列表失败: {str(e)}")


@router.get("/history", summary="查询监控历史")
async def get_quality_history(
    symbol: Optional[str] = Query(None, description="品种代码"),
    metric: Optional[QualityMetric] = Query(None, description="质量指标"),
    days: int = Query(7, ge=1, le=30, description="查询天数"),
    current_user: User = Depends(get_current_user)
):
    """
    查询质量监控历史数据
    
    用于绘制趋势图表
    """
    try:
        # TODO: 从数据库查询历史记录
        # 这里暂时返回模拟数据
        
        history = []
        for i in range(days):
            date = datetime.now() - timedelta(days=i)
            history.append({
                "date": date.strftime("%Y-%m-%d"),
                "completeness": 98.5 + random.uniform(-2, 2),
                "accuracy": 99.8 + random.uniform(-1, 1),
                "timeliness": 97.2 + random.uniform(-3, 3),
                "consistency": 100.0,
                "overall": 98.9 + random.uniform(-2, 2)
            })
        
        return {
            "symbol": symbol or "ALL",
            "metric": metric.value if metric else "overall",
            "days": days,
            "history": history
        }
    
    except Exception as e:
        logger.error(f"❌ 查询监控历史失败: {e}")
        raise HTTPException(status_code=500, detail=f"查询监控历史失败: {str(e)}")


@router.get("/statistics", summary="查询监控统计")
async def get_quality_statistics(
    current_user: User = Depends(get_current_user)
):
    """
    查询质量监控统计
    
    包括检查次数、问题数量、各级别问题统计等
    """
    try:
        stats = quality_monitor.get_statistics()
        
        # 统计各级别问题数量
        issues = quality_monitor.get_issues(1000)
        level_counts = {
            "info": len([i for i in issues if i.get("level") == "info"]),
            "warning": len([i for i in issues if i.get("level") == "warning"]),
            "critical": len([i for i in issues if i.get("level") == "critical"])
        }
        
        # 统计各指标问题数量
        metric_counts = {}
        for metric in QualityMetric:
            metric_counts[metric.value] = len([i for i in issues if i.get("metric") == metric.value])
        
        return {
            "monitor_stats": stats,
            "level_counts": level_counts,
            "metric_counts": metric_counts,
            "total_issues": len(issues)
        }
    
    except Exception as e:
        logger.error(f"❌ 查询监控统计失败: {e}")
        raise HTTPException(status_code=500, detail=f"查询监控统计失败: {str(e)}")


@router.post("/check", summary="触发质量检查")
async def trigger_quality_check(
    symbol: Optional[str] = Query(None, description="品种代码，为空则检查所有品种"),
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """
    手动触发质量检查
    
    管理员可手动触发检查
    """
    try:
        if symbol:
            # 检查单个品种
            scores = await quality_monitor.calculate_overall_score(db, symbol)
            return {
                "symbol": symbol,
                "scores": scores,
                "issues": [i for i in quality_monitor.get_issues(100) if i.get("symbol") == symbol]
            }
        else:
            # 检查所有品种
            results = await quality_monitor.check_all_symbols(db)
            return {
                "total_symbols": len(results),
                "scores": results,
                "issues": quality_monitor.get_issues(100)
            }
    
    except Exception as e:
        logger.error(f"❌ 触发质量检查失败: {e}")
        raise HTTPException(status_code=500, detail=f"触发质量检查失败: {str(e)}")


# ============== 监控规则管理 ==============

from pydantic import BaseModel, Field


class QualityRuleCreate(BaseModel):
    """创建质量规则"""
    name: str = Field(..., description="规则名称")
    symbol: Optional[str] = Field(None, description="品种代码，为空表示全局规则")
    metric: QualityMetric = Field(..., description="监控指标")
    condition: str = Field(..., description="条件表达式")
    threshold: float = Field(..., description="阈值")
    level: QualityLevel = Field(default=QualityLevel.WARNING, description="告警级别")
    description: Optional[str] = Field(None, description="规则描述")


class QualityRuleUpdate(BaseModel):
    """更新质量规则"""
    name: Optional[str] = None
    symbol: Optional[str] = None
    metric: Optional[QualityMetric] = None
    condition: Optional[str] = None
    threshold: Optional[float] = None
    level: Optional[QualityLevel] = None
    description: Optional[str] = None
    enabled: Optional[bool] = None


@router.post("/rules", summary="创建监控规则")
async def create_quality_rule(
    rule_data: QualityRuleCreate,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """
    创建数据质量监控规则
    """
    try:
        # TODO: 实现规则创建
        
        return {
            "status": "success",
            "message": "监控规则创建成功",
            "rule": rule_data.model_dump()
        }
    
    except Exception as e:
        logger.error(f"❌ 创建监控规则失败: {e}")
        raise HTTPException(status_code=500, detail=f"创建监控规则失败: {str(e)}")


@router.get("/rules", summary="查询监控规则列表")
async def get_quality_rules(
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=100),
    metric: Optional[QualityMetric] = Query(None),
    enabled: Optional[bool] = Query(None),
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """
    查询监控规则列表
    """
    try:
        # TODO: 实现规则查询
        
        return {
            "total": 0,
            "page": page,
            "page_size": page_size,
            "items": []
        }
    
    except Exception as e:
        logger.error(f"❌ 查询监控规则列表失败: {e}")
        raise HTTPException(status_code=500, detail=f"查询监控规则列表失败: {str(e)}")


@router.put("/rules/{rule_id}", summary="更新监控规则")
async def update_quality_rule(
    rule_id: int,
    rule_data: QualityRuleUpdate,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """
    更新监控规则
    """
    try:
        # TODO: 实现规则更新
        
        return {
            "status": "success",
            "message": "监控规则更新成功",
            "rule_id": rule_id
        }
    
    except Exception as e:
        logger.error(f"❌ 更新监控规则失败: {e}")
        raise HTTPException(status_code=500, detail=f"更新监控规则失败: {str(e)}")


@router.delete("/rules/{rule_id}", summary="删除监控规则")
async def delete_quality_rule(
    rule_id: int,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user)
):
    """
    删除监控规则
    """
    try:
        # TODO: 实现规则删除
        
        return {
            "status": "success",
            "message": "监控规则删除成功",
            "rule_id": rule_id
        }
    
    except Exception as e:
        logger.error(f"❌ 删除监控规则失败: {e}")
        raise HTTPException(status_code=500, detail=f"删除监控规则失败: {str(e)}")


# ============== 导入依赖 ==============

from datetime import timedelta
import random