import type { CustomRequestOptions } from '@/http/types'

export interface Response<T> {
  code?: number
  data?: T
  message?: string
};

export function http<T = unknown>(options: CustomRequestOptions): Promise<T extends Response<infer U> ? U : T> {
  // 1. 返回 Promise 对象
  return new Promise<T extends Response<infer U> ? U : T>((resolve, reject) => {
    uni.request({
      ...options,
      dataType: 'json',
      // #ifndef MP-WEIXIN
      responseType: 'json',
      // #endif
      // 响应成功
      success(res) {
        // 状态码 2xx，参考 axios 的设计
        if (res.statusCode >= 200 && res.statusCode < 300) {
          const responseData = res.data as Response<T>

          // 检查是否是标准响应格式
          if (responseData && typeof responseData === 'object' && 'code' in responseData) {
            // 检查业务状态码
            if (responseData.code === 200) {
              // 2.1 提取核心数据 responseData.data
              resolve(responseData.data as any)
            }
            else {
              // 业务错误
              !options.hideErrorToast && uni.showToast({
                icon: 'none',
                title: responseData.message || '请求错误',
              })
              reject(responseData)
            }
          }
          else {
            // 非标准响应格式，直接返回原始数据
            resolve(res.data as any)
          }
        }
        else if (res.statusCode === 401) {
          // 401错误  -> 清理用户信息，跳转到登录页
          // userStore.clearUserInfo()
          // uni.navigateTo({ url: '/pages/login/login' })
          reject(res)
        }
        else {
          // 其他错误 -> 根据后端错误信息轻提示
          const responseData = res.data as Response<T>
          const errorMessage = responseData?.message || '请求错误'

          !options.hideErrorToast && uni.showToast({
            icon: 'none',
            title: errorMessage,
          })
          reject(res)
        }
      },
      // 响应失败
      fail(err) {
        uni.showToast({
          icon: 'none',
          title: '网络错误，换个网络试试',
        })
        reject(err)
      },
    })
  })
}

/**
 * GET 请求
 * @param url 后台地址
 * @param query 请求query参数
 * @param header 请求头，默认为json格式
 * @returns
 */
export function httpGet<T>(url: string, query?: Record<string, any>, header?: Record<string, any>, options?: Partial<CustomRequestOptions>) {
  return http<T>({
    url,
    query,
    method: 'GET',
    header,
    ...options,
  })
}

/**
 * POST 请求
 * @param url 后台地址
 * @param data 请求body参数
 * @param query 请求query参数，post请求也支持query，很多微信接口都需要
 * @param header 请求头，默认为json格式
 * @returns
 */
export function httpPost<T>(url: string, data?: Record<string, any>, query?: Record<string, any>, header?: Record<string, any>, options?: Partial<CustomRequestOptions>) {
  return http<T>({
    url,
    query,
    data,
    method: 'POST',
    header,
    ...options,
  })
}
/**
 * PUT 请求
 */
export function httpPut<T>(url: string, data?: Record<string, any>, query?: Record<string, any>, header?: Record<string, any>, options?: Partial<CustomRequestOptions>) {
  return http<T>({
    url,
    data,
    query,
    method: 'PUT',
    header,
    ...options,
  })
}

/**
 * DELETE 请求（无请求体，仅 query）
 */
export function httpDelete<T>(url: string, query?: Record<string, any>, header?: Record<string, any>, options?: Partial<CustomRequestOptions>) {
  return http<T>({
    url,
    query,
    method: 'DELETE',
    header,
    ...options,
  })
}

http.get = httpGet
http.post = httpPost
http.put = httpPut
http.delete = httpDelete

// 支持与 alovaJS 类似的API调用
http.Get = httpGet
http.Post = httpPost
http.Put = httpPut
http.Delete = httpDelete
