97 lines
2.4 KiB
JavaScript
97 lines
2.4 KiB
JavaScript
import { buildA7Packets } from '../core/packet'
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/**
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* 校验 WiFi 入参，规则来源于 profile.wifi。
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*/
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function validateWifi(profile, ssid, password) {
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const errors = []
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if (!ssid || ssid.length > profile.wifi.maxSsidLength) {
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errors.push(`SSID 长度需在 1-${profile.wifi.maxSsidLength} 之间`)
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}
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if (password.length < profile.wifi.minPasswordLength || password.length > profile.wifi.maxPasswordLength) {
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errors.push(`密码长度需在 ${profile.wifi.minPasswordLength}-${profile.wifi.maxPasswordLength} 之间`)
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}
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const invalidChars = profile.wifi.invalidChars || []
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if (invalidChars.some((char) => ssid.includes(char))) {
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errors.push(`SSID 不能包含特殊字符: ${invalidChars.join(' ')}`)
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}
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if (errors.length) {
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throw new Error(errors.join('；'))
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}
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}
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/**
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* 监听协议状态通知，等待 WiFi 配网状态码返回。
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*/
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function waitForWifiState(ble, timeout = 8000) {
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return new Promise((resolve, reject) => {
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let timer = null
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let off = null
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const clearAll = () => {
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if (timer) {
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clearTimeout(timer)
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}
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if (off) {
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off()
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}
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}
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timer = setTimeout(() => {
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clearAll()
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reject(new Error('等待 WiFi 状态超时'))
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}, timeout)
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off = ble.on('protocol:state', (payload) => {
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if (![1, 2, 3, 4].includes(payload.stateCode)) {
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return
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}
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clearAll()
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resolve(payload.stateCode)
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})
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})
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}
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/**
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* WiFi 配网模块：负责打包并发送 ssid|password，随后等待状态通知。
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*/
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export function createWifiModule(ble) {
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async function configureWifi(ssid, password, options = {}) {
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const profile = ble.getProfile()
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const targetSsid = String(ssid || '')
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const targetPass = String(password || '')
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validateWifi(profile, targetSsid, targetPass)
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const { wifi } = ble.getState().characteristics
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if (!wifi || !wifi.uuid) {
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throw new Error('未发现 UUID_WIFI 特征值')
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}
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const payload = `${targetSsid}|${targetPass}`
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const packets = buildA7Packets(payload, profile.packet)
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// 按分包顺序逐包发送，保持设备端解析一致性。
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for (const packet of packets) {
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await ble.writeCharacteristic(wifi.uuid, packet)
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}
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const stateCode = await waitForWifiState(ble, options.timeout || 8000)
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return {
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success: stateCode === 3,
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stateCode
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}
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}
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return {
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configureWifi
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}
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}
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