#!/usr/bin/env node
const { execSync } = require('child_process')
const path = require('path')

const fs = require('fs')
// 根目录 = config 文件所在目录的上级（config 在 <根>/configs/config.js）
const configPath = process.env.STATIC_ROOT
  ? path.join(path.dirname(process.env.STATIC_ROOT), 'configs', 'config.js')
  : path.join(__dirname, '..', '..', 'configs', 'config.js')
const PROJECT_ROOT = path.dirname(path.dirname(path.resolve(configPath)))
const TCPIP_PORT = 5555

/** 从配置解析并返回 ADB 可执行文件路径 */
function getAdbPath() {
  if (!fs.existsSync(configPath)) return path.join(PROJECT_ROOT, 'lib', 'scrcpy-adb', process.platform === 'win32' ? 'adb.exe' : 'adb')
  const config = require(configPath)
  const p = config.adbPath?.path
  return p ? (path.isAbsolute(p) ? p : path.resolve(PROJECT_ROOT, p)) : path.join(PROJECT_ROOT, 'lib', 'scrcpy-adb', process.platform === 'win32' ? 'adb.exe' : 'adb')
}

/** 返回当前通过 USB 连接的设备 ID 列表 */
function getConnectedDeviceIds(adbPath) {
  const out = execSync(`"${adbPath}" devices`, { encoding: 'utf-8' })
  return out
    .split('\n')
    .filter((line) => line.trim() && !line.startsWith('List'))
    .map((line) => line.trim().split('\t')[0])
    .filter((id) => id)
}

/** 通过 USB 打开系统「无线调试」开关，并读回确认；返回是否成功 */
function enableWirelessDebuggingSetting(adbPath, deviceId) {
  execSync(`"${adbPath}" -s ${deviceId} shell settings put global adb_wifi_enabled 1`, { encoding: 'utf-8' })
  const out = execSync(`"${adbPath}" -s ${deviceId} shell settings get global adb_wifi_enabled`, { encoding: 'utf-8' })
  return out.trim() === '1'
}

/** 通过 USB 在该设备上开启 TCPIP 监听，用于后续无线连接 */
function enableTcpipOnDevice(adbPath, deviceId, port) {
  return execSync(`"${adbPath}" -s ${deviceId} tcpip ${port}`, { encoding: 'utf-8' }).trim()
}

/** 获取设备 WLAN IPv4，用于无线连接提示（先 getprop，无则用 ip addr）*/
function getDeviceWlanIp(adbPath, deviceId) {
  const prop = execSync(`"${adbPath}" -s ${deviceId} shell getprop dhcp.wlan0.ipaddress`, { encoding: 'utf-8' }).trim()
  if (prop && /^\d+\.\d+\.\d+\.\d+$/.test(prop)) return prop
  const out = execSync(`"${adbPath}" -s ${deviceId} shell ip -4 addr show wlan0`, { encoding: 'utf-8' })
  const m = out.match(/inet\s+(\d+\.\d+\.\d+\.\d+)/)
  return m ? m[1] : null
}

const adbPath = getAdbPath()
const devices = getConnectedDeviceIds(adbPath)

if (devices.length === 0) {
  process.stderr.write('No devices found. Please connect a device via USB.\n')
  process.exit(1)
}

const deviceId = devices[0]
if (devices.length > 1) {
  process.stdout.write(`Multiple devices. Using: ${deviceId}\n`)
}

// 先打开系统「无线调试」、取 WLAN IP（USB 仍连接），再执行 tcpip
const wirelessOk = enableWirelessDebuggingSetting(adbPath, deviceId)
if (wirelessOk) {
  process.stdout.write('无线调试已开启\n')
} else {
  process.stdout.write('无线调试开关可能不被本机支持，请到 设置 → 开发者选项 中手动打开\n')
}
const wlanIp = getDeviceWlanIp(adbPath, deviceId)
const tcpipOut = enableTcpipOnDevice(adbPath, deviceId, TCPIP_PORT)
process.stdout.write(tcpipOut + '\n')
if (wlanIp) {
  process.stdout.write(`Wireless: adb connect ${wlanIp}:${TCPIP_PORT}\n`)
}