import type { AsyncData, UseFetchOptions } from '#app'

export function requestCore<DataT>(url: string, options: UseFetchOptions<DataT>) {
  // Const config = useRuntimeConfig()
  const { $mitt } = useNuxtApp()
  return useFetch(url, {
    baseURL: 'https://cantyonion.site',
    retry: false,
    timeout: 3000,
    onRequest({ options }) {
      let token = ''
      if (import.meta.client) {
        token = localStorage.getItem('token') || ''
      }
      if (!options.headers.get('Authorization')) {
        options.headers.set('Authorization', `Bearer ${token}`)
      }
    },
    onResponse({ response }) {
      // HTTP状态码2XX/3XX执行，否则不执行
      if (response.status < 200 || response.status >= 400) {
        console.error(`HTTP 错误: ${response.status}`)
      }
      // 业务code状态码判断
      // If (response._data.code !== 200) {
      //
      // }
    },
    onResponseError({ response }) {
      $mitt.emit('eventBus', {
        level: 'error',
        title: `HTTP错误：${response.status}`,
        message: response.statusText,
      })
    },
    ...options,
  })
}

export function get<DataT, ErrorT>(url: string, options?: UseFetchOptions<DataT>): () => Promise<DataT> {
  let result: AsyncData<DataT, ErrorT> | null = null

  return async (): Promise<DataT> => {
    if (result != null) {
      await result.refresh()
      if (result.status.value === 'success') {
        return result.data.value
      }
      throw result.error
    }

    result = await requestCore(url, {
      method: 'GET',
      ...options,
    }) as AsyncData<DataT, ErrorT>
    return result.data.value
  }
}