import { hasContainLoginCodeAndState, parseQueryResult } from '../utils'

async function handleRedirectCallback(
  url: string = window.location.href,
  stop = false,
) {
  if (!hasContainLoginCodeAndState())
    return

  const queryStringFragments
    = url.split('?').slice(1).length !== 0
      ? url.split('?').slice(1)
      : url.split('#').slice(1)
  if (queryStringFragments.length === 0)
    throw new Error('There are no query params available for parsing.')

  const { state, code, error, error_description } = parseQueryResult(
    queryStringFragments.join(''),
  )

  if (
    stop !== true
      && queryStringFragments[0] !== ''
      && (window.self !== window.top
        || (window.self !== window.parent.opener && window.parent.opener !== null))
  ) {
    // 给父页面发送消息（iframe和pupop两种方式）
    const target = window.parent.opener || window.parent
    target.postMessage(
      {
        type: 'authorization_response',
        response: {
          code,
          state,
        },
      },
      '*',
    )
  }
}

handleRedirectCallback()
window.addEventListener('hashchange', () => {
  handleRedirectCallback()
})