react-native-position/lib/module/index.js

react-native-position

"use strict";

import { NativeModules, Platform } from 'react-native';
import { HMSLocation } from "./HMSLocation.js";
import { macTransform } from "./utils.js";
const LINKING_ERROR = `The package 'react-native-position' doesn't seem to be linked. Make sure: \n\n` + Platform.select({
  ios: "- You have run 'pod install'\n",
  default: ''
}) + '- You rebuilt the app after installing the package\n' + '- You are not using Expo Go\n';
const Position = NativeModules.Position ? NativeModules.Position : new Proxy({}, {
  get() {
    throw new Error(LINKING_ERROR);
  }
});
export async function getCurrentPosition(config) {
  const _config = {
    hmsKey: config.hmsKey ?? '',
    GNSStimeout: config.GNSStimeout ?? 5000
  };
  try {
    const wifis = await Position.getWifis();
    const HMSRequest = wifis.map(wifi => ({
      mac: macTransform(wifi.bssid),
      rssi: wifi.rssi,
      time: Date.now() * 1000
    }));
    if (HMSRequest.length === 0) {
      throw new Error('No WiFi info');
    }
    const hmsLocation = await HMSLocation(_config.hmsKey, [], HMSRequest);
    return {
      latitude: hmsLocation.latitude,
      longitude: hmsLocation.longitude,
      from: 'Wifi',
      HMSResult: hmsLocation.HMSResult
    };
  } catch (error) {
    // WiFi 关闭，尝试使用 GNSS
    try {
      const gnss = await Position.getGNSS(_config.GNSStimeout);
      return {
        latitude: gnss.latitude,
        longitude: gnss.longitude,
        from: 'GNSS'
      };
    } catch (gnssError) {
      // GNSS 失败，使用 Cell 信息
      const cell = await Position.getCell();
      const mcc = +cell.simOperator.substring(0, 3);
      let mnc = +cell.simOperator.substring(3);
      if (mnc < 10) {
        mnc = 0;
      }
      const HMSRequest = {
        currentCell: {
          cellId: +cell.cellId,
          lac: +cell.lac,
          mcc,
          mnc,
          rat: cell.rat,
          rssi: cell.rssi
        },
        neighborCells: []
      };
      const neighborCell = await Position.getNeighborCell();
      // HMS 限制最多 8 个
      HMSRequest.neighborCells = neighborCell.slice(0, 8);
      const hmsLocation = await HMSLocation(_config.hmsKey, [HMSRequest], []);
      return {
        latitude: hmsLocation.latitude,
        longitude: hmsLocation.longitude,
        from: 'Cell',
        HMSResult: hmsLocation.HMSResult
      };
    }
  }
}
export async function getCellInfo() {
  return await Position.getCell();
}
export async function getWifis() {
  return await Position.getWifis();
}
export async function getNeighborCell() {
  return await Position.getNeighborCell();
}
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