/**
 * 设备信息工具
 */
import { getStorage, setStorage } from './storage'

const DEVICE_ID_KEY = 'DEVICE_ID'

/**
 * 生成设备ID
 */
function generateDeviceId(): string {
  return `device_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`
}

/**
 * 获取设备ID
 */
export function getDeviceId(): string {
  let deviceId = getStorage<string>(DEVICE_ID_KEY)
  if (!deviceId) {
    deviceId = generateDeviceId()
    setStorage(DEVICE_ID_KEY, deviceId)
  }
  return deviceId
}

/**
 * 获取平台类型
 */
export function getPlatform(): 'android' | 'ios' | 'h5' | 'mp-weixin' | 'mp-alipay' {
  // #ifdef APP-PLUS
  // @ts-ignore
  const platform = plus.os.name.toLowerCase()
  return platform === 'ios' ? 'ios' : 'android'
  // #endif

  // #ifdef H5
  return 'h5'
  // #endif

  // #ifdef MP-WEIXIN
  return 'mp-weixin'
  // #endif

  // #ifdef MP-ALIPAY
  return 'mp-alipay'
  // #endif

  return 'h5'
}

/**
 * 获取APP类型
 */
export function getAppType(): string {
  const platform = getPlatform()
  return platform === 'android' || platform === 'ios' ? 'app' : platform
}

/**
 * 请求头：X-Platform、X-Version（普通请求统一带上，便于后端与网关识别客户端来源）。
 */
export function getMobileClientHeaders(): Record<string, string> {
  const platform = getPlatform()
  let xPlatform = 'H5'
  if (platform === 'mp-weixin' || platform === 'mp-alipay') {
    xPlatform = 'MINI'
  } else if (platform === 'android' || platform === 'ios') {
    xPlatform = 'APP'
  }
  const { version } = getRuntimeClientVersion()
  return {
    'X-Platform': xPlatform,
    'X-Version': version || '1.0.0'
  }
}

/**
 * 小程序 / App 运行时版本号与整型构建号（非 H5 静态写死；与 manifest 发布配置一致）。
 */
export function getRuntimeClientVersion(): { version: string; versionCode: number } {
  let version = ''
  let versionCode = 0

  // #ifdef MP-WEIXIN
  try {
    const ac = uni.getAccountInfoSync()
    const mp = ac?.miniProgram as { version?: string; versionCode?: number | string } | undefined
    if (mp?.version) version = String(mp.version).trim()
    const raw = mp?.versionCode
    if (raw !== undefined && raw !== null && raw !== '') {
      const n = typeof raw === 'number' ? raw : parseInt(String(raw), 10)
      if (!Number.isNaN(n)) versionCode = n
    }
  } catch {
    /* ignore */
  }
  // #endif

  return { version, versionCode }
}