import { computed, ref } from "vue";
import {
  getDeviceDetailAPI,
  getMyDevicesAPI,
  unbindDeviceAPI,
} from "@/apis";

export const DEVICE_NAME_STORAGE_KEY = "device_name_overrides";

export function useDeviceStatus({
  user,
  device,
  deviceStatus,
  online,
  updateDevice,
  clearDevice,
  unbindDialogVisible,
}) {
  const deviceDetails = ref({});
  let deviceDetailRequestVersion = 0;

  const isDeviceOnline = computed(
    () => deviceStatus.value.online === true || online.value === true
  );
  const isDeviceCharging = computed(
    () => isDeviceOnline.value && deviceStatus.value.charging === true
  );
  const statusText = computed(() => {
    if (!isDeviceOnline.value) return "未连接";
    return isDeviceCharging.value ? "已连接（充电中）" : "已连接";
  });
  const statusClass = computed(() =>
    isDeviceOnline.value ? "device-status--online" : "device-status--offline"
  );
  const battery = computed(() => {
    const rawValue = deviceStatus.value.battery ?? deviceStatus.value.power;
    if (rawValue === null || rawValue === undefined || rawValue === "") return null;
    const value = Number(rawValue);
    return Number.isFinite(value) ? Math.min(100, Math.max(0, value)) : null;
  });
  const batteryText = computed(() =>
    battery.value === null ? "暂无数据" : `${battery.value}%`
  );
  const onlineDurationText = computed(() => {
    const rawDuration = deviceStatus.value.onlineDuration;
    if (rawDuration == null || String(rawDuration).trim() === "") return "--";

    const seconds = Number(rawDuration);
    if (!Number.isFinite(seconds) || seconds < 0) return "--";

    // WS 推送秒数，页面按完整分钟展示累计使用时间。
    const totalMinutes = Math.floor(seconds / 60);
    const hours = Math.floor(totalMinutes / 60);
    const minutes = totalMinutes % 60;
    return hours > 0 ? `${hours}小时${minutes}分钟` : `${minutes}分钟`;
  });
  const networkType = computed(() =>
    String(deviceStatus.value.netType ?? "").trim().toLowerCase()
  );
  const networkText = computed(() => {
    const netType = networkType.value;
    if (netType === "wifi") return "WiFi";
    if (netType === "4g") return "4G";
    return isDeviceOnline.value ? "在线" : "未连接";
  });
  const maskedDeviceId = computed(() => {
    const id = String(device.value.deviceId || "");
    if (!id) return "暂无设备编号";
    if (id.length <= 3) return id;
    return `${"*".repeat(Math.min(5, id.length - 3))}${id.slice(-3)}`;
  });
  const deviceRows = computed(() => [
    { label: "设备型号", value: deviceDetails.value.model || "射灵智能弓" },
    { label: "当前电量", value: batteryText.value },
    { label: "连接方式", value: networkText.value },
    { label: "设备编号", value: maskedDeviceId.value },
  ]);

  const getDeviceNameOverrides = () => {
    const value = uni.getStorageSync(DEVICE_NAME_STORAGE_KEY);
    return value && typeof value === "object" ? value : {};
  };

  const refreshDeviceDetails = async () => {
    const deviceId = device.value.deviceId;
    if (!deviceId) return;

    const requestVersion = ++deviceDetailRequestVersion;
    try {
      const detailResponse = await getDeviceDetailAPI(deviceId);
      const detail = detailResponse?.detail || detailResponse?.data?.detail;
      if (
        !detail ||
        typeof detail !== "object" ||
        requestVersion !== deviceDetailRequestVersion ||
        device.value.deviceId !== deviceId
      ) {
        return;
      }

      deviceDetails.value = {
        ...deviceDetails.value,
        ...detail,
        deviceModelName: detail.deviceModelName ?? "",
        bindTime: String(
          detail.bindTime ?? deviceDetails.value.bindTime ?? ""
        ).trim(),
        qrCodeUrl: String(
          detail.qrCodeUrl ?? deviceDetails.value.qrCodeUrl ?? ""
        ).trim(),
      };
    } catch (error) {
      // 实时刷新失败时保留当前页面数据，等待下次通知或页面重新显示。
      console.log("刷新设备详情失败", error);
    }
  };

  const syncDeviceBinding = async () => {
    if (!user.value.id) return;
    try {
      const devices = await getMyDevicesAPI();
      if (Array.isArray(devices?.bindings) && devices.bindings.length > 0) {
        const currentDevice = devices.bindings[0];
        const nameOverrides = getDeviceNameOverrides();
        // 二维码和绑定时间仅取详情接口，绑定列表不能作为这两项的回退数据。
        let latestDevice = {
          ...currentDevice,
          deviceModelName: "",
          bindTime: "",
          qrCodeUrl: "",
        };

        try {
          const detailResponse = await getDeviceDetailAPI(currentDevice.deviceId);
          const detail = detailResponse?.detail || detailResponse?.data?.detail;
          if (detail && typeof detail === "object") {
            latestDevice = {
              ...currentDevice,
              ...detail,
              deviceModelName: detail.deviceModelName ?? "",
              bindTime: String(detail.bindTime ?? "").trim(),
              qrCodeUrl: String(detail.qrCodeUrl ?? "").trim(),
              deviceName:
                detail.deviceAlias || detail.deviceName || currentDevice.deviceName,
            };
          }
        } catch (error) {
          // 详情接口失败时保留绑定关系，二维码和绑定时间仍保持为空。
          console.log("获取设备详情失败", error);
        }

        deviceDetails.value = latestDevice;
        updateDevice(
          latestDevice.deviceId,
          nameOverrides[latestDevice.deviceId] ||
            latestDevice.deviceAlias ||
            latestDevice.deviceName ||
            latestDevice.name ||
            "我的智能弓"
        );
        return;
      }
      clearDevice();
      deviceDetailRequestVersion += 1;
      deviceDetails.value = {};
    } catch (error) {
      console.log("同步设备绑定失败", error);
    }
  };

  const unbindDevice = async () => {
    if (!device.value.deviceId) return;
    try {
      await unbindDeviceAPI(device.value.deviceId);
      uni.setStorageSync("calibration", false);
      clearDevice();
      deviceDetailRequestVersion += 1;
      deviceDetails.value = {};
      unbindDialogVisible.value = false;
      uni.showToast({ title: "解绑成功", icon: "success" });
    } catch (error) {
      console.error("解绑设备失败", error);
      if (error?.type === "DEVICE_BIND_INVALID") {
        clearDevice();
        unbindDialogVisible.value = false;
      }
    }
  };

  return {
    batteryText,
    deviceDetails,
    deviceRows,
    getDeviceNameOverrides,
    isDeviceCharging,
    isDeviceOnline,
    maskedDeviceId,
    networkText,
    networkType,
    onlineDurationText,
    refreshDeviceDetails,
    statusClass,
    statusText,
    syncDeviceBinding,
    unbindDevice,
  };
}