import { notification } from 'antd'
import { Dispatch, ReactNode, SetStateAction } from 'react'

import { ApiError, FileInfoDto } from '@api'
import { getUserToken } from '@utils/storage'

const notificationTypeDictionary = new Map([
  ['error'  , { notifyInstance: notification.error  , caption: 'Ошибка' }],
  ['warning', { notifyInstance: notification.warning, caption: 'Предупреждение' }],
  ['info'   , { notifyInstance: notification.info   , caption: 'Инфо' }],
  ['open'   , { notifyInstance: notification.info   , caption: '' }],
])

/**
 * Вызов оповещений всплывающим окошком.
 * @param body string или ReactNode
 * @param notifyType для параметра типа. Допустимые значение 'error', 'warning', 'info'
 */
export const notify = (body: ReactNode, notifyType: string = 'info', other?: any) => {
  if (!body) return

  const instance = notificationTypeDictionary.get(notifyType) ??
    notificationTypeDictionary.get('open')

  instance?.notifyInstance({
    description: body,
    message: instance.caption,
    placement: 'bottomRight',
    duration: 10,
    ...other
  })
}

type asyncFunction = (...args: any) => Promise<any|void>

export const invokeWebApiWrapperAsync = async (
  funcAsync: asyncFunction,
  setShowLoader?: Dispatch<SetStateAction<boolean>>,
  errorNotifyText?: (string | ((ex: unknown) => string)),
  actionName?: string,
) => {
  setShowLoader?.(true)
  try{
    await funcAsync()
  } catch (ex) {
    if(process.env.NODE_ENV === 'development')
      console.error(ex)
    if (ex instanceof ApiError && ex.status === 403) {
      if (actionName)
        notify(`Недостаточно прав для выполнения действия "${actionName}"`, 'error')
      else
        notify('Недостаточно прав для выполнения действия', 'error')
    } else if(errorNotifyText) {
      if (typeof errorNotifyText === 'function')
        notify(errorNotifyText(ex), 'error')
      else notify(errorNotifyText, 'error')
    }
  } finally {
    setShowLoader?.(false)
  }
}

export const download = async (url: string, fileName?: string) => {
  const response = await fetch(url, {
    headers: {
      Authorization: `Bearer ${getUserToken()}`
    },
    method: 'Get'
  })
  if(response.status !== 200)
    throw response
  const requestFileName = decodeURI(
    fileName
    ?? response.headers.get('content-disposition')?.split(';').pop()?.split(`'`).pop()
    ?? url.replace('\\','/').split('/').pop()
    ?? 'file'
  )
  const blob = await response.blob()
  const reader = new FileReader()
  reader.readAsDataURL(blob)
  reader.onload = (e) => {
    const a = document.createElement('a')
    a.href = (e.target?.result?.toString() ?? '')
    a.download = requestFileName
    document.body.appendChild(a) // we need to append the element to the dom -> otherwise it will not work in firefox
    a.click()
    a.remove()
  }
}

export const upload = async (url: string, formData: FormData) => {
  const response = await fetch(url, {
    headers: {
      Authorization: `Bearer ${getUserToken()}`
    },
    method: 'Post',
    body: formData,
  })
  return response
}

export const downloadFile = async (fileInfo: FileInfoDto) => {
  try {
    await download(`/api/well/${fileInfo.idWell}/files/${fileInfo.id}`)
  } catch (error) {
    notify(`Не удалось скачать файл ${fileInfo.name} по скважине (${fileInfo.idWell})`, 'error')
    console.log(error)
  }
}

export const formatBytes = (bytes: number) => {
  if(bytes < 1024)
    return `${bytes.toFixed(0)}b`
  if(bytes < 1024 * 1024)
    return `${(bytes / 1024).toFixed(2)}kb`
  else
    return `${(bytes / 1024 / 1024).toFixed(2)}Mb`
}