from pydantic import BaseModel, ConfigDict, Field, JsonValue, model_validator


class ScadaMonitoringSettings(BaseModel):
    """Project-owned device roles used by the manual SCADA monitoring demo."""

    model_config = ConfigDict(extra="forbid", allow_inf_nan=False)

    rule_version: str = Field(
        default="burst-monitor-v1",
        min_length=1,
        max_length=80,
        pattern=r"^[a-zA-Z0-9_.-]+$",
    )
    pressure_device_ids: list[str] = Field(default_factory=list, max_length=20)
    outlet_flow_device_ids: list[str] = Field(default_factory=list, max_length=20)

    @model_validator(mode="after")
    def distinct_roles(self):
        for values in (self.pressure_device_ids, self.outlet_flow_device_ids):
            if len(set(values)) != len(values) or any(not value.strip() for value in values):
                raise ValueError("SCADA 监测角色中的设备标识不能为空或重复")
        if set(self.pressure_device_ids) & set(self.outlet_flow_device_ids):
            raise ValueError("同一设备不能同时作为压力与出厂边界流量")
        return self


class ProjectSettings(BaseModel):
    """Extensible, non-secret project parameters stored in MetaDB as JSON."""

    model_config = ConfigDict(extra="allow", allow_inf_nan=False)

    __pydantic_extra__: dict[str, JsonValue] = Field(init=False)
    scada_monitoring_interval_seconds: int | None = Field(
        default=None,
        strict=True,
        ge=60,
        le=31_536_000,
        description="SCADA 主动监测演示步长，单位秒；null 表示未配置",
    )
    scada_monitoring: ScadaMonitoringSettings | None = Field(
        default=None,
        description="主动监测使用的项目设备角色；不创建定时任务",
    )