"""
API 请求/响应数据模型
"""
from datetime import datetime
from typing import List, Optional, Dict, Any
from pydantic import BaseModel, Field, model_validator


# ============================================================
# 暴雨预测
# ============================================================

class RainfallPredictRequest(BaseModel):
    """
    暴雨灾害链预测请求

    参数规则（二选一）：
    1. 自动推演模式：rainfall、duration、region_code 全部不传 → 从气象表自动获取，不限区域
    2. 指定条件模式：rainfall、duration、region_code 全部传入 → 按指定条件预测
    """
    disaster_name: str = Field(min_length=1, max_length=255)
    point_ids: Optional[List[int]] = Field(None, max_length=500,
                                           description="点位ID列表，不传则查询所有点")
    region_code: Optional[str] = Field(None, description="行政区划代码（如 '610104'）")
    rainfall: Optional[float] = Field(None, ge=0, description="累计降雨量(mm)")
    duration: Optional[float] = Field(None, ge=0, description="降雨持续时间(h)")
    occurred_time: Optional[datetime] = Field(None, description="事件发生时间，不传则为当前时间")
    operation_type: str = Field("模拟", min_length=1, max_length=50,
                                description="操作类型（如 '模拟', '实时监测', '应急评估'）")

    @model_validator(mode='after')
    def validate_mode_exclusivity(self):
        """校验 rainfall / duration / region_code 必须要么全不传，要么全传"""
        trio = (self.rainfall, self.duration, self.region_code)
        none_count = sum(1 for v in trio if v is None)
        if none_count not in (0, 3):
            raise ValueError(
                "rainfall、duration、region_code 必须全部传入或全部不传，"
                "不允许只传部分参数"
            )
        return self


# ============================================================
# 地震预测
# ============================================================

class EarthquakePredictRequest(BaseModel):
    """地震灾害链预测请求"""
    disaster_name: str = Field(min_length=1, max_length=255)
    point_ids: Optional[List[int]] = Field(None, max_length=500,
                                           description="点位ID列表，不传则查询所有点")
    region_code: Optional[str] = Field(None, description="行政区划代码（如 '610104'），不传则不限区域")
    magnitude: float = Field(..., ge=0, le=10, description="震级(Richter)")
    depth: float = Field(10.0, gt=0, le=700, description="震源深度(km)，默认10km")
    epicenter_lon: float = Field(..., ge=-180, le=180, description="震中经度")
    epicenter_lat: float = Field(..., ge=-90, le=90, description="震中纬度")
    occurred_time: Optional[datetime] = Field(None, description="地震发生时间，不传则为当前时间")
    operation_type: str = Field("模拟", min_length=1, max_length=50,
                                description="操作类型（如 '模拟', '实时监测', '应急评估'）")


# ============================================================
# 专题图产出
# ============================================================
class QgisMapExportRequest(BaseModel):
    """专题图导出请求"""
    inferenceId: int = Field(..., description="推理结果ID（xian_inference_result.id）")


class QgisMapExportResponse(BaseModel):
    """专题图导出响应"""
    code: int = Field(200, description="状态码")
    message: str = Field("success", description="提示信息")
    data: Optional[str] = Field(None, description="导出图片的访问路径")


# ============================================================
# 通用响应
# ============================================================

class PredictData(BaseModel):
    """预测数据"""
    record_id: Optional[int] = Field(None, description="推理结果记录ID")
    list: Dict[str, Dict[str, Any]] = Field(default_factory=dict, description="预测结果列表，包含概率和经纬度")


class PredictResponse(BaseModel):
    """预测响应"""
    code: int = Field(200, description="状态码")
    message: str = Field("success", description="提示信息")
    data: Optional[PredictData] = Field(None, description="预测数据")


class UpdateMonitoringTimeRequest(BaseModel):
    """更新监测时间请求"""
    query_time: str = Field(..., description="查询时间，格式: YYYY-MM-DD HH:mm:ss，如 '2025-09-16 20:00:00'")


class HealthResponse(BaseModel):
    """健康检查响应"""
    status: str = "ok"
    rainfall_model_loaded: bool = False
    earthquake_model_loaded: bool = False


# ============================================================
# 各区降雨概况
# ============================================================

class DistrictSummaryRequest(BaseModel):
    """各区降雨概况请求"""
    inference_id: int = Field(..., ge=1, description="推理结果ID（xian_inference_result.id）")


class DistrictSummaryItem(BaseModel):
    """单个区的降雨概况"""
    district_name: str = Field(..., description="行政区名称（如 '碑林区'）")
    district_code: str = Field(..., description="行政区划代码（如 '610103'）")
    rainfall: float = Field(..., description="累计降雨量(mm)")
    duration_hours: float = Field(..., description="持续降雨时间(h)")


class DistrictSummaryResponse(BaseModel):
    """各区降雨概况响应"""
    code: int = Field(200, description="状态码")
    message: str = Field("success", description="提示信息")
    data: Optional[List[DistrictSummaryItem]] = Field(None, description="各区降雨概况列表")