import { permission } from '@/js_sdk/wa-permission/permission.js'

function isAppPlus() {
  return typeof plus !== 'undefined' && !!plus?.os?.name
}

export function isIosApp() {
  if (!isAppPlus()) return false
  const name = String(plus.os.name || '')
  return name === 'iOS' || name.includes('iPhone')
}

function normalizeIosStatus(status) {
  if (status === null || status === undefined) return -1
  const num = Number(status)
  return Number.isNaN(num) ? -1 : num
}

function getUniAuthorizeSetting() {
  try {
    if (typeof uni.getAppAuthorizeSetting === 'function') {
      return uni.getAppAuthorizeSetting()
    }
  } catch (e) {
    console.error('getUniAuthorizeSetting error', e)
  }
  return null
}

function getUniCameraAuth() {
  const setting = getUniAuthorizeSetting()
  return setting?.cameraAuthorized || null
}

function getUniAlbumAuth() {
  const setting = getUniAuthorizeSetting()
  return setting?.albumAuthorized || null
}

function getIosAuthStatus(type) {
  if (!isIosApp()) return -1
  try {
    if (type === 'camera') {
      const AVCaptureDevice = plus.ios.importClass('AVCaptureDevice')
      const status = AVCaptureDevice.authorizationStatusForMediaType('video')
      return normalizeIosStatus(status)
    }
    if (type === 'album') {
      const PHPhotoLibrary = plus.ios.importClass('PHPhotoLibrary')
      const status = PHPhotoLibrary.authorizationStatus()
      return normalizeIosStatus(status)
    }
  } catch (e) {
    console.error('getIosAuthStatus error', e)
  }
  return -1
}

function isIosCameraGranted() {
  const uniAuth = getUniCameraAuth()
  if (uniAuth === 'authorized') return true
  if (uniAuth === 'denied' || uniAuth === 'config error') return false

  const status = getIosAuthStatus('camera')
  if (status === 3) return true
  try {
    return permission.judgeIosPermission('camera') === true
  } catch {
    return false
  }
}

function isIosAlbumGranted() {
  const uniAuth = getUniAlbumAuth()
  if (uniAuth === 'authorized' || uniAuth === 'limited') return true
  if (uniAuth === 'denied' || uniAuth === 'config error') return false

  const status = getIosAuthStatus('album')
  return status === 3 || status === 4
}

function isIosCameraDenied() {
  const uniAuth = getUniCameraAuth()
  if (uniAuth === 'denied' || uniAuth === 'config error') return true

  const status = getIosAuthStatus('camera')
  return status === 1 || status === 2
}

function isIosAlbumDenied() {
  const uniAuth = getUniAlbumAuth()
  if (uniAuth === 'denied' || uniAuth === 'config error') return true

  const status = getIosAuthStatus('album')
  return status === 1 || status === 2
}

function requestIosCameraPermission() {
  return new Promise((resolve) => {
    let settled = false
    const done = (granted) => {
      if (settled) return
      settled = true
      resolve(!!granted)
    }

    setTimeout(() => done(false), 15000)

    try {
      const AVCaptureDevice = plus.ios.importClass('AVCaptureDevice')
      AVCaptureDevice.requestAccessForMediaTypecompletionHandler('video', (granted) => {
        done(granted)
      })
    } catch (e) {
      console.error('requestIosCameraPermission error', e)
      done(false)
    }
  })
}

function requestIosAlbumPermission() {
  return new Promise((resolve) => {
    let settled = false
    const done = (status) => {
      if (settled) return
      settled = true
      resolve(normalizeIosStatus(status))
    }

    setTimeout(() => done(-1), 15000)

    try {
      const PHPhotoLibrary = plus.ios.importClass('PHPhotoLibrary')
      PHPhotoLibrary.requestAuthorization((status) => {
        done(status)
      })
    } catch (e) {
      console.error('requestIosAlbumPermission error', e)
      done(-1)
    }
  })
}

async function ensureIosCameraPermission() {
  if (isIosCameraGranted()) {
    return 'granted'
  }

  if (isIosCameraDenied()) {
    return 'denied'
  }

  const granted = await requestIosCameraPermission()
  if (granted || isIosCameraGranted()) {
    return 'granted'
  }

  return 'denied'
}

async function ensureIosAlbumPermission() {
  if (isIosAlbumGranted()) {
    return 'granted'
  }

  if (isIosAlbumDenied()) {
    return 'denied'
  }

  const status = await requestIosAlbumPermission()
  if (status === 3 || status === 4 || isIosAlbumGranted()) {
    return 'granted'
  }

  return 'denied'
}

function getAndroidAlbumPermission() {
  const Build = plus.android.importClass('android.os.Build')
  return Build.VERSION.SDK_INT >= 33
    ? 'android.permission.READ_MEDIA_IMAGES'
    : 'android.permission.READ_EXTERNAL_STORAGE'
}

async function ensureAndroidPermission(permissionID) {
  const granted = await permission.checkAndroidPermission(permissionID)
  if (granted === 1) return 'granted'

  const result = await permission.requestAndroidPermission(permissionID)
  if (result === 1) return 'granted'
  if (result === -1) return 'denied_always'
  return 'denied'
}

export async function ensureScanCameraPermission() {
  if (!isAppPlus()) return 'granted'
  if (isIosApp()) return ensureIosCameraPermission()
  return ensureAndroidPermission('android.permission.CAMERA')
}

export async function ensureScanAlbumPermission() {
  if (!isAppPlus()) return 'granted'
  if (isIosApp()) return ensureIosAlbumPermission()
  return ensureAndroidPermission(getAndroidAlbumPermission())
}

export function isIosPermissionDenied(type) {
  if (!isIosApp()) return false
  return type === 'camera' ? isIosCameraDenied() : isIosAlbumDenied()
}

export function isPermissionError(error) {
  const msg = String(error?.errMsg || error?.message || error).toLowerCase()
  return (
    error?._permissionDenied === true
    || msg.includes('permission')
    || msg.includes('authorize')
    || msg.includes('auth deny')
    || msg.includes('auth')
    || msg.includes('权限')
    || msg.includes('no permission')
    || msg.includes('denied')
    || msg.includes('拒绝')
    || msg.includes('未授权')
  )
}

export function shouldGuideToSettings(state) {
  if (state === 'denied_always') return true
  if (state === 'denied' && isIosApp()) return true
  return false
}

export function openAppPermissionSetting() {
  if (!isAppPlus()) return
  if (typeof uni.openAppAuthorizeSetting === 'function') {
    uni.openAppAuthorizeSetting({})
    return
  }
  permission.gotoAppPermissionSetting()
}