import Build from 'android.os.Build'
import { BluetoothNative } from 'uts.sdk.modules.sp2Bluetooth'
import { type BluetoothDeviceItem, type BluetoothDeviceFoundCallback, type BluetoothErrorCallback, type BluetoothSuccessCallback, type BluetoothDataCallback, type BluetoothDebugCallback } from '../interface.uts'

function getBluetoothPermissions(): string[] {
  const permissions: string[] = []
  if (Build.VERSION.SDK_INT >= 31) {
    permissions.push('android.permission.BLUETOOTH_SCAN')
    permissions.push('android.permission.BLUETOOTH_CONNECT')
  } else if (Build.VERSION.SDK_INT >= 23) {
    permissions.push('android.permission.ACCESS_FINE_LOCATION')
  }
  return permissions
}

function ensureBluetoothPermissions(onSuccess: BluetoothSuccessCallback, onError: BluetoothErrorCallback): void {
  const activity = UTSAndroid.getUniActivity()
  if (activity == null) {
    onError('无法获取当前 Activity')
    return
  }

  const permissions = getBluetoothPermissions()
  if (permissions.length === 0) {
    onSuccess()
    return
  }

  UTSAndroid.requestSystemPermission(activity, permissions, (allRight: boolean, grantedList: string[]) => {
    if (allRight || grantedList.length === permissions.length) {
      onSuccess()
      return
    }
    onError('蓝牙权限未完全授予')
  }, (doNotAskAgain: boolean, grantedList: string[]) => {
    if (doNotAskAgain) {
      onError('蓝牙权限被永久拒绝，请到系统设置中开启')
      return
    }
    if (grantedList.length > 0) {
      onError('蓝牙权限未完全授予')
      return
    }
    onError('蓝牙权限申请失败')
  })
}

export function startBluetoothScan(onDeviceFound: BluetoothDeviceFoundCallback, onError: BluetoothErrorCallback): void {
  ensureBluetoothPermissions(() => {
    BluetoothNative.startBluetoothScan((deviceId: string, name: string) => {
      const device: BluetoothDeviceItem = {
        deviceId: deviceId,
        name: name
      }
      onDeviceFound(device)
    }, onError)
  }, onError)
}

export function stopBluetoothScan(): void {
  BluetoothNative.stopBluetoothScan()
}

export function connectBluetoothDevice(deviceId: string, onSuccess: BluetoothSuccessCallback, onError: BluetoothErrorCallback): void {
  stopBluetoothScan()
  disconnectBluetoothDevice()
  ensureBluetoothPermissions(() => {
    // 对齐 ecBLE.js 的“先清理旧连接，再建立新连接”思路，避免复用脏的 GATT 状态。
    setTimeout(() => {
      BluetoothNative.connectBluetoothDevice(deviceId, onSuccess, onError)
    }, 300)
  }, onError)
}

export function disconnectBluetoothDevice(): void {
  BluetoothNative.disconnectBluetoothDevice()
}

export function onBluetoothDataReceived(callback: BluetoothDataCallback): void {
  BluetoothNative.setOnDataReceivedCallback(callback)
}

export function onBluetoothDebugMessage(callback: BluetoothDebugCallback): void {
  BluetoothNative.setOnDebugMessageCallback(callback)
}

export function getBluetoothDebugSnapshot(): string {
  return BluetoothNative.getDebugSnapshot()
}

export function readBluetoothDataOnce(): void {
  BluetoothNative.readBluetoothDataOnce()
}

export function refreshBluetoothNotification(): void {
  BluetoothNative.refreshBluetoothNotification()
}

export function writeBluetoothData(data: string): void {
  BluetoothNative.writeBluetoothData(data)
}