emcp/backend/app/services/platform_service.py

from __future__ import annotations

from datetime import datetime
from typing import Any, Dict, List, Optional

from app.adapters.device_client import CDeviceClient, MockDeviceClient
from app.cache.memory_store import memory_store
from app.core.config import settings
from app.core.security import hash_password
from app.repositories.alarm_repo import AlarmRepository
from app.repositories.json_config_repo import JsonConfigRepository
from app.schemas.platform import (
    AlarmEvent,
    AiAlarmSettingIn,
    ChannelConfigIn,
    DeviceConfigIn,
    DevicePasswordUpdateIn,
    DeviceStatus,
    LineAlarmSettingIn,
    NetConfigItem,
    LineData,
    RealtimeData,
    SwitchControlIn,
    SystemConfigIn,
    TimeSyncConfigIn,
    ValueGroup,
    UartConfigItem,
)
from app.ws.manager import ws_manager

# 主站侧操作类事件代码
OPERATION_EVENT_CODE = {
    1: "控制分/合",
    2: "读定值失败",
    3: "线路定值修改",
    4: "AI报警参数修改",
    5: "AI通道参数修改",
    6: "AO通道参数修改",
    7: "通讯参数修改",
    8: "密码修改",
}

# 操作类事件 event_type
EVENT_TYPE_OPERATION = 4

# 开机自检异常归入报警类，避免前端事件报表出现未知类型
EVENT_TYPE_SELF_CHECK = 3
SELF_CHECK_COMMUNICATION_ERROR_CODE = 99


def _generate_operation_event_content(event_code: int, line_code: int = 0, detail: str = "") -> str:
    """根据操作事件代码生成事件内容描述文字。

    参数
    ----
    event_code : int
        操作事件代码 (1~8)
    line_code : int
        关联线路编号，0 表示装置级
    detail : str
        附加描述信息，如网卡名、端口号等
    """
    label = OPERATION_EVENT_CODE.get(event_code, f"未知操作事件(code={event_code})")
    parts = [label]
    if line_code > 0:
        parts.append(f"线路{line_code}")
    if detail:
        parts.append(detail)
    return "；".join(parts)


def _collect_startup_status_abnormalities(status: DeviceStatus) -> List[str]:
    abnormal_items: List[str] = []
    if status.self_check != "正常":
        abnormal_items.append(f"装置自检={status.self_check}")
    for label, value in (
        ("网口1", status.net1),
        ("网口2", status.net2),
        ("网口3", status.net3),
        ("网口4", status.net4),
        ("串口1", status.uart1),
        ("串口2", status.uart2),
        ("串口3", status.uart3),
        ("串口4", status.uart4),
    ):
        if value != "正常":
            abnormal_items.append(f"{label}={value}")
    return abnormal_items


class PlatformService:
    def __init__(self) -> None:
        self.config_repo = JsonConfigRepository()
        self.alarm_repo = AlarmRepository()
        self.device_client = MockDeviceClient() if settings.use_mock_device else CDeviceClient()

    def _safe_ratio(self, primary: float, secondary: float, default: float = 1.0) -> float:
        """安全计算变比。

        secondary 接近 0 时返回默认值，避免除 0。
        """
        if abs(float(secondary)) < 1e-9:
            return default
        return float(primary) / float(secondary)

    def _get_config_transformer_ratios(self, line_no: int) -> Dict[str, float]:
        """从设备参数区读取 PT/CT 变比。

        来源：设备线路定值回读结果中的 transformer_change[]
        当前约定：category 为“PT变化/CT变化”（兼容旧的“PT变比/CT变比”），取 value 字段。
        """
        try:
            current = self.device_client.read_line_alarm_setting(line_no)
        except Exception:
            return {}

        transformer_list = current.get("transformer_change")
        if not isinstance(transformer_list, list):
            return {}
        pt_ratio: Optional[float] = None
        ct_ratio: Optional[float] = None
        for transformer in transformer_list:
            if not isinstance(transformer, dict):
                continue
            category = str(transformer.get("category", "")).strip()
            raw_value = transformer.get("value", transformer.get("limit", 1.0))
            try:
                value = float(raw_value)
            except (TypeError, ValueError):
                value = 1.0
            if value <= 0:
                value = 1.0
            if category in {"PT变化", "PT变比"}:
                pt_ratio = value
            if category in {"CT变化", "CT变比"}:
                ct_ratio = value
        result: Dict[str, float] = {}
        if pt_ratio is not None:
            result["pt_ratio"] = pt_ratio
        if ct_ratio is not None:
            result["ct_ratio"] = ct_ratio
        return result

    def _get_line_transformer_ratios(self, line: LineData) -> Dict[str, float]:
        """确定当前线路使用的 PT/CT 变比。

        优先级：
        1) 配置文件中指定的变比（若存在）；
        2) 由设备返回的 pri/sec 数据反算得到的变比（兜底）。
        """
        config_ratios = self._get_config_transformer_ratios(line.line_no)
        if config_ratios.get("pt_ratio") is not None and config_ratios.get("ct_ratio") is not None:
            return {"pt_ratio": float(config_ratios["pt_ratio"]), "ct_ratio": float(config_ratios["ct_ratio"])}

        pri = line.pri_val
        sec = line.sec_val

        pt_ratio_candidates = [
            self._safe_ratio(pri.Ua, sec.Ua, 0.0),
            self._safe_ratio(pri.Ub, sec.Ub, 0.0),
            self._safe_ratio(pri.Uc, sec.Uc, 0.0),
            self._safe_ratio(pri.Uab, sec.Uab, 0.0),
            self._safe_ratio(pri.Ubc, sec.Ubc, 0.0),
            self._safe_ratio(pri.Uca, sec.Uca, 0.0),
        ]
        ct_ratio_candidates = [
            self._safe_ratio(pri.Ia, sec.Ia, 0.0),
            self._safe_ratio(pri.Ib, sec.Ib, 0.0),
            self._safe_ratio(pri.Ic, sec.Ic, 0.0),
        ]

        pt_ratio = next((ratio for ratio in pt_ratio_candidates if ratio > 0), 1.0)
        ct_ratio = next((ratio for ratio in ct_ratio_candidates if ratio > 0), 1.0)
        if config_ratios.get("pt_ratio") is not None:
            pt_ratio = float(config_ratios["pt_ratio"])
        if config_ratios.get("ct_ratio") is not None:
            ct_ratio = float(config_ratios["ct_ratio"])
        return {"pt_ratio": pt_ratio, "ct_ratio": ct_ratio}

    def _build_primary_from_secondary(self, secondary: ValueGroup, pt_ratio: float, ct_ratio: float) -> ValueGroup:
        """根据二次值和变比计算一次值。

        规则：
        - 电压一次值 = 电压二次值 * PT
        - 电流一次值 = 电流二次值 * CT
        - 功率一次值 = 功率二次值 * PT * CT
        - 频率一次值 = 频率二次值
        - 功率因数一次值 = 功率因数二次值
        """
        power_ratio = pt_ratio * ct_ratio
        return ValueGroup(
            Ua=secondary.Ua * pt_ratio,
            Ub=secondary.Ub * pt_ratio,
            Uc=secondary.Uc * pt_ratio,
            Ia=secondary.Ia * ct_ratio,
            Ib=secondary.Ib * ct_ratio,
            Ic=secondary.Ic * ct_ratio,
            Pa=secondary.Pa * power_ratio,
            Pb=secondary.Pb * power_ratio,
            Pc=secondary.Pc * power_ratio,
            Pt=secondary.Pt * power_ratio,
            Qa=secondary.Qa * power_ratio,
            Qb=secondary.Qb * power_ratio,
            Qc=secondary.Qc * power_ratio,
            Qt=secondary.Qt * power_ratio,
            Sa=secondary.Sa * power_ratio,
            Sb=secondary.Sb * power_ratio,
            Sc=secondary.Sc * power_ratio,
            St=secondary.St * power_ratio,
            PFa=secondary.PFa,
            PFb=secondary.PFb,
            PFc=secondary.PFc,
            PFt=secondary.PFt,
            Uab=secondary.Uab * pt_ratio,
            Ubc=secondary.Ubc * pt_ratio,
            Uca=secondary.Uca * pt_ratio,
            frq=secondary.frq,
        )

    def _round_value_group(self, group: ValueGroup) -> ValueGroup:
        group_data = group.model_dump()
        precision_map = {
            "Ua": 3,
            "Ub": 3,
            "Uc": 3,
            "Ia": 3,
            "Ib": 3,
            "Ic": 3,
            "Pa": 2,
            "Pb": 2,
            "Pc": 2,
            "Pt": 2,
            "Qa": 2,
            "Qb": 2,
            "Qc": 2,
            "Qt": 2,
            "Sa": 2,
            "Sb": 2,
            "Sc": 2,
            "St": 2,
            "PFa": 3,
            "PFb": 3,
            "PFc": 3,
            "PFt": 3,
            "Uab": 3,
            "Ubc": 3,
            "Uca": 3,
            "frq": 3,
        }

        for field_name, precision in precision_map.items():
            value = group_data.get(field_name)
            if isinstance(value, (int, float)):
                group_data[field_name] = round(float(value), precision)

        return ValueGroup(**group_data)

    def _normalize_realtime_precision(self, realtime: RealtimeData) -> RealtimeData:
        """实时数据归一化：按配置变比计算一次值，并按界面要求控制小数位。"""
        line_list = []
        for line in realtime.line_list:
            ratios = self._get_line_transformer_ratios(line)
            line_list.append(
                LineData(
                    line_no=line.line_no,
                    pri_val=self._round_value_group(
                        self._build_primary_from_secondary(
                            line.sec_val,
                            ratios["pt_ratio"],
                            ratios["ct_ratio"],
                        )
                    ),
                    sec_val=self._round_value_group(line.sec_val),
                )
            )
        ai_collect = {
            key: round(float(value), 2) if isinstance(value, (int, float)) else value
            for key, value in realtime.ai_collect.items()
        }
        return RealtimeData(line_list=line_list, switch=dict(realtime.switch), ai_collect=ai_collect)

    def get_realtime_data(self) -> RealtimeData:
        cached = memory_store.get_realtime()
        if cached is not None:
            normalized = self._normalize_realtime_precision(cached)
            memory_store.set_realtime(normalized)
            return normalized
        realtime = self.device_client.read_realtime_data()
        normalized = self._normalize_realtime_precision(realtime)
        memory_store.set_realtime(normalized)
        return normalized

    def get_device_status(self) -> DeviceStatus:
        cached = memory_store.get_status()
        if cached is not None:
            return cached
        status = self.device_client.read_device_status()
        memory_store.set_status(status)
        return status

    def startup_self_check(self) -> Dict[str, Any]:
        """开机自检：通过 03H 读取参数区，验证通讯链路。

        若通讯失败，生成"开机自检（通讯链路）异常"报警事件，
        并将设备状态置为"断开"，网络/串口状态清空。

        返回值
        ----
        dict
            {"success": bool, "status": DeviceStatus}
        """
        success = self.device_client.startup_self_check()
        if success:
            status = self.device_client.read_device_status()
            memory_store.set_status(status)
            abnormal_items = _collect_startup_status_abnormalities(status)
            if abnormal_items:
                alarm = AlarmEvent(
                    event_time=datetime.now(),
                    line_code=0,
                    event_type=EVENT_TYPE_SELF_CHECK,
                    event_code=SELF_CHECK_COMMUNICATION_ERROR_CODE,
                    event_value=len(abnormal_items),
                    content=f"开机自检状态异常：{', '.join(abnormal_items)}",
                )
                alarm.id = self.alarm_repo.save_alarm(alarm)
                memory_store.push_alarm(alarm)
            return {"success": True, "status": status.model_dump()}

        # 通讯失败：生成报警事件
        alarm = AlarmEvent(
            event_time=datetime.now(),
            line_code=0,
            event_type=EVENT_TYPE_SELF_CHECK,
            event_code=SELF_CHECK_COMMUNICATION_ERROR_CODE,
            event_value=0,
            content="开机自检（通讯链路）异常",
        )
        alarm.id = self.alarm_repo.save_alarm(alarm)
        memory_store.push_alarm(alarm)

        # 设置状态为断开
        status = DeviceStatus(
            self_check="断开",
            net1="断开",
            net2="断开",
            net3="断开",
            net4="断开",
            uart1="断开",
            uart2="断开",
            uart3="断开",
            uart4="断开",
            frequency_limit="未知",
            ct_break="未知",
            pt_break="未知",
        )
        memory_store.set_status(status)
        return {"success": False, "status": status.model_dump()}

    def _default_device_config(self) -> Dict[str, Any]:
        return {
            "password": "",
            "hardware_version": {
                "board_version": "B001.001.001",
                "display_version": "S001.001.001",
                "other_version": "Y001.001.001",
            },
            "software_version": {
                "display_program": "001.001.001",
                "communication_program": "001.001.001",
                "measurement_program": "001.001.001",
            },
            "net": [
                {"nic": "网卡一", "ip": "192.168.1.10", "mask": "255.255.255.0", "gateway": "192.168.1.1", "protocol": "Modbus TCP"},
                {"nic": "网卡二", "ip": "192.168.1.56", "mask": "255.255.255.255", "gateway": "192.168.1.56", "protocol": "Modbus TCP"},
            ],
            "uart": [
                {"port": "COM1", "baud": 9600, "parity": "NONE", "data_bits": 8, "stop_bits": 1, "protocol": ""},
                {"port": "COM2", "baud": 115200, "parity": "NONE", "data_bits": 8, "stop_bits": 1, "protocol": "Modbus RTU"},
            ],
        }

    def _merge_keyed_items(self, defaults: List[Dict[str, Any]], current: Any, key_field: str) -> List[Dict[str, Any]]:
        merged = [dict(item) for item in defaults]
        if not isinstance(current, list):
            return merged

        index_map = {
            item.get(key_field): index
            for index, item in enumerate(merged)
            if isinstance(item, dict) and item.get(key_field) is not None
        }
        for item in current:
            if not isinstance(item, dict):
                continue
            key = item.get(key_field)
            if key in index_map:
                merged[index_map[key]].update(item)
            else:
                merged.append(dict(item))
        return merged

    def _upsert_keyed_item(self, items: List[Dict[str, Any]], payload: Dict[str, Any], key_field: str) -> List[Dict[str, Any]]:
        key = payload.get(key_field)
        updated = False
        for index, item in enumerate(items):
            if item.get(key_field) == key:
                items[index] = payload
                updated = True
                break
        if not updated:
            items.append(payload)
        return items

    def _find_keyed_item(self, items: List[Dict[str, Any]], key_field: str, key_value: str) -> Optional[Dict[str, Any]]:
        for item in items:
            if item.get(key_field) == key_value:
                return item
        return None

    def _load_device_config_with_defaults(self) -> Dict[str, Any]:
        current = self.config_repo.read_device_config()
        defaults = self._default_device_config()
        data = {
            "password": current.get("password", "") if isinstance(current, dict) else "",
            "hardware_version": dict(defaults["hardware_version"]),
            "software_version": dict(defaults["software_version"]),
            "net": [],
            "uart": [],
        }

        if isinstance(current, dict):
            if isinstance(current.get("hardware_version"), dict):
                data["hardware_version"].update(current["hardware_version"])
            if isinstance(current.get("software_version"), dict):
                data["software_version"].update(current["software_version"])
            data["net"] = self._merge_keyed_items(defaults["net"], current.get("net"), "nic")
            data["uart"] = self._merge_keyed_items(defaults["uart"], current.get("uart"), "port")
        else:
            data["net"] = self._merge_keyed_items(defaults["net"], None, "nic")
            data["uart"] = self._merge_keyed_items(defaults["uart"], None, "port")

        return data

    def save_device_config(self, payload: DeviceConfigIn) -> Dict[str, Any]:
        data = self._load_device_config_with_defaults()
        payload_data = payload.model_dump()
        data["hardware_version"] = payload_data["hardware_version"]
        data["software_version"] = payload_data["software_version"]
        data["net"] = self._merge_keyed_items(data["net"], payload_data["net"], "nic")
        data["uart"] = self._merge_keyed_items(data["uart"], payload_data["uart"], "port")
        if payload.password.strip():
            data["password"] = hash_password(payload.password)
            self._save_operation_event(event_code=8, detail="设备密码")
        if payload_data.get("net"):
            nics = [item.get("nic", "") for item in payload_data["net"] if isinstance(item, dict)]
            self._save_operation_event(event_code=7, detail=f"网卡: {', '.join(nics)}")
        if payload_data.get("uart"):
            ports = [item.get("port", "") for item in payload_data["uart"] if isinstance(item, dict)]
            self._save_operation_event(event_code=7, detail=f"串口: {', '.join(ports)}")
        path = self.config_repo.write_device_config(data)
        device_result = self.device_client.send_device_config(payload)
        return {"save_path": f"/config/{path.name}", **device_result}

    def save_device_password(self, payload: DevicePasswordUpdateIn) -> Dict[str, Any]:
        data = self._load_device_config_with_defaults()
        data["password"] = hash_password(payload.password)
        path = self.config_repo.write_device_config(data)
        self._save_operation_event(event_code=8, detail="设备密码")
        return {"save_path": f"/config/{path.name}", "target": "password", "send_status": "成功"}

    def get_device_config(self) -> Dict[str, Any]:
        data = self._load_device_config_with_defaults()
        # 不返回已保存的哈希密码，避免前端把哈希串直接显示到设置界面
        data["password"] = ""
        return data

    def get_net_config(self, nic: str) -> Dict[str, Any]:
        return self.device_client.read_net_config(nic)

    def save_net_config(self, payload: NetConfigItem | List[NetConfigItem]) -> Dict[str, Any]:
        if isinstance(payload, list):
            nics = [item.nic for item in payload]
            results = [self.device_client.send_net_config(item) for item in payload]
            self._save_operation_event(event_code=7, detail=f"网卡: {', '.join(nics)}")
            return {"send_status": "成功", "target": "net_batch", "items": len(results), "results": results}
        result = self.device_client.send_net_config(payload)
        self._save_operation_event(event_code=7, detail=f"网卡: {payload.nic}")
        return result

    def get_uart_config(self, port: str) -> Dict[str, Any]:
        device_config = self._load_device_config_with_defaults()
        item = self._find_keyed_item(device_config["uart"], "port", port)
        if item is not None:
            return item
        return {"port": port, "baud": 9600, "parity": "NONE", "data_bits": 8, "stop_bits": 1, "protocol": ""}

    def save_uart_config(self, payload: UartConfigItem | List[UartConfigItem]) -> Dict[str, Any]:
        device_config = self._load_device_config_with_defaults()
        if isinstance(payload, list):
            results = []
            ports = []
            for item in payload:
                device_config["uart"] = self._upsert_keyed_item(device_config["uart"], item.model_dump(), "port")
                ports.append(item.port)
                results.append({"target": "uart", "port": item.port, "send_status": "成功"})
            path = self.config_repo.write_device_config(device_config)
            self._save_operation_event(event_code=7, detail=f"串口: {', '.join(ports)}")
            return {
                "save_path": f"/config/{path.name}",
                "target": "uart_batch",
                "items": len(results),
                "send_status": "成功",
                "results": results,
            }
        device_config["uart"] = self._upsert_keyed_item(device_config["uart"], payload.model_dump(), "port")
        path = self.config_repo.write_device_config(device_config)
        self._save_operation_event(event_code=7, detail=f"串口: {payload.port}")
        return {"save_path": f"/config/{path.name}", "target": "uart", "port": payload.port, "send_status": "成功"}

    def save_channel_config(self, payload: ChannelConfigIn) -> Dict[str, Any]:
        device_result = self.device_client.send_channel_config(payload)
        if payload.ai_channel:
            ai_chs = [str(item.ch) for item in payload.ai_channel]
            self._save_operation_event(event_code=5, detail=f"通道: {', '.join(ai_chs)}")
        if payload.ao_channel:
            ao_chs = [str(item.ch) for item in payload.ao_channel]
            self._save_operation_event(event_code=6, detail=f"通道: {', '.join(ao_chs)}")
        return device_result

    def get_channel_config(self) -> Dict[str, Any]:
        return self.device_client.read_channel_config()

    def _default_line_alarm_setting(self, line_no: int) -> Dict[str, Any]:
        return {
            "line_no": line_no,
            "over_limit_alarm": [
                {"category": "电压", "limit": 180, "delay": 180, "output_node": "开出1", "enabled": True},
                {"category": "电流", "limit": 180, "delay": 180, "output_node": "开出1", "enabled": True},
                {"category": "差流", "limit": 180, "delay": 180, "output_node": "开出1", "enabled": False},
                {"category": "功率", "limit": 180, "delay": 180, "output_node": "开出1", "enabled": False},
                {"category": "频率", "limit": 180, "delay": 180, "output_node": "开出1", "enabled": False},
            ],
            "fault_alarm": [
                {"category": "PT断线", "limit": 0, "delay": 180, "output_node": "开出1", "enabled": True},
                {"category": "CT断线", "limit": 0, "delay": 180, "output_node": "开出2", "enabled": False},
            ],
            "transformer_change": [
                {"category": "PT变化", "value": 1.0, "enabled": False},
                {"category": "CT变化", "value": 1.0, "enabled": False},
            ],
        }

    def _normalize_line_alarm_settings(self, raw: Any) -> List[Dict[str, Any]]:
        if isinstance(raw, list):
            return [item for item in raw if isinstance(item, dict)]
        if isinstance(raw, dict):
            return [raw]
        return []

    def save_line_alarm_setting(self, payload: LineAlarmSettingIn) -> Dict[str, Any]:
        device_result = self.device_client.send_line_alarm_setting(payload)
        self._save_operation_event(event_code=3, line_code=payload.line_no)
        return device_result

    def get_line_alarm_setting(self, line_no: int = 1) -> Dict[str, Any]:
        merged = self._default_line_alarm_setting(line_no)
        try:
            current = self.device_client.read_line_alarm_setting(line_no)
        except Exception as exc:
            self._save_operation_event(event_code=2, line_code=line_no, detail=f"线路{line_no}：{exc}")
            current = None
        if isinstance(current, dict):
            merged.update(current)
        normalized_transformer: List[Dict[str, Any]] = []
        for transformer in merged.get("transformer_change", []):
            if not isinstance(transformer, dict):
                continue
            category = transformer.get("category", "")
            enabled = bool(transformer.get("enabled", False))
            raw_value = transformer.get("value", transformer.get("limit", 1.0))
            try:
                value = float(raw_value)
            except (TypeError, ValueError):
                value = 1.0
            normalized_transformer.append({"category": category, "value": value, "enabled": enabled})
        merged["transformer_change"] = normalized_transformer
        return merged

    def save_ai_alarm_setting(self, payload: List[AiAlarmSettingIn]) -> Dict[str, Any]:
        payload_data = [item.model_dump() for item in payload]
        result = self.device_client.send_ai_alarm_setting(payload_data)
        chs = [str(item.channel_no) for item in payload]
        self._save_operation_event(event_code=4, detail=f"通道: {', '.join(chs)}")
        return result

    def get_ai_alarm_setting(self) -> List[Dict[str, Any]]:
        return self.device_client.read_ai_alarm_setting()

    def save_system_config(self, payload: SystemConfigIn) -> Dict[str, Any]:
        return self.device_client.send_system_config(payload)

    def get_system_config(self) -> Dict[str, Any]:
        return self.device_client.read_system_config()

    def save_time_sync_config(self, payload: TimeSyncConfigIn) -> Dict[str, Any]:
        return self.device_client.send_time_sync_config(payload)

    def get_time_sync_config(self) -> Dict[str, Any]:
        return self.device_client.read_time_sync_config()

    def list_alarms(
        self,
        page: int,
        size: int,
        line_code: Optional[int] = None,
        event_type: Optional[int] = None,
        start_time: Optional[datetime] = None,
        end_time: Optional[datetime] = None,
    ) -> List[Dict[str, Any]]:
        return self.alarm_repo.list_alarms(
            page=page,
            size=size,
            line_code=line_code,
            event_type=event_type,
            start_time=start_time,
            end_time=end_time,
        )

    def _save_operation_event(
        self,
        event_code: int,
        line_code: int = 0,
        event_value: int = 0,
        detail: str = "",
    ) -> AlarmEvent:
        """通用操作事件生成保存方法（同步）。

        将主站侧操作类事件保存到 SQLite 并推入内存缓存。
        返回保存后的 AlarmEvent 对象（含数据库自增 id），调用方可进一步广播。

        参数
        ----
        event_code : int
            操作事件代码，取值 1~8，对应含义见 OPERATION_EVENT_CODE
        line_code : int
            关联线路编号，0 表示装置级
        event_value : int
            事件附带数值，如分合闸通道号
        detail : str
            附加描述（如网卡名、端口号、参数名等）

        返回值
        ----
        AlarmEvent
            已保存的事件对象（id 已回填）
        """
        content = _generate_operation_event_content(event_code, line_code, detail)
        alarm = AlarmEvent(
            event_time=datetime.now(),
            line_code=line_code,
            event_type=EVENT_TYPE_OPERATION,
            event_code=event_code,
            event_value=event_value,
            content=content,
        )
        alarm.id = self.alarm_repo.save_alarm(alarm)
        memory_store.push_alarm(alarm)
        return alarm

    def switch_control(self, payload: SwitchControlIn) -> Dict[str, Any]:
        result = self.device_client.send_switch_control(payload)
        action_label = "合闸" if payload.action == 1 else "分闸"
        self._save_operation_event(
            event_code=1,
            event_value=payload.ch,
            detail=f"CH{payload.ch} {action_label}",
        )
        return result

    async def poll_time_sync_once(self) -> None:
        time_sync = self.device_client.read_time_sync_config()
        await ws_manager.broadcast("time-sync", {"type": "time_sync", "data": time_sync})

    async def poll_device_once(self) -> None:
        realtime = self._normalize_realtime_precision(self.device_client.read_realtime_data())
        status = self.device_client.read_device_status()
        alarms = self.device_client.read_alarm_events()

        memory_store.set_realtime(realtime)
        memory_store.set_status(status)
        await ws_manager.broadcast("real-time", {"type": "real_time", "data": realtime.model_dump()})
        await ws_manager.broadcast("status", {"type": "status", "data": status.model_dump()})

        for alarm in alarms:
            alarm.id = self.alarm_repo.save_alarm(alarm)
            memory_store.push_alarm(alarm)
            await ws_manager.broadcast("alarm", alarm.model_dump(mode="json"))


platform_service = PlatformService()