import axios, { type AxiosInstance, type AxiosRequestConfig, type AxiosResponse } from 'axios'
import { ElMessage } from 'element-plus'
import { useUserStore } from '@/stores/user'

// 响应数据接口
export interface ApiResponse<T = any> {
  code: number
  message: string
  data: T
  timestamp: number
}

// 创建 axios 实例
const service: AxiosInstance = axios.create({
  baseURL: '/api',
  timeout: 30000,
  headers: {
    'Content-Type': 'application/json;charset=UTF-8'
  }
})

// 请求拦截器
service.interceptors.request.use(
  (config) => {
    const userStore = useUserStore()
    if (userStore.token) {
      config.headers.Authorization = `Bearer ${userStore.token}`
    }
    return config
  },
  (error) => {
    return Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(
  (response: AxiosResponse<ApiResponse>) => {
    const { data } = response
    if (data.code === 200) {
      return data.data
    } else if (data.code === 401) {
      ElMessage.error('登录已过期，请重新登录')
      const userStore = useUserStore()
      userStore.logout()
      window.location.href = '/login'
      return Promise.reject(new Error(data.message || '未授权'))
    } else {
      ElMessage.error(data.message || '请求失败')
      return Promise.reject(new Error(data.message || '请求失败'))
    }
  },
  (error) => {
    ElMessage.error(error.message || '网络请求失败')
    return Promise.reject(error)
  }
)

// 封装请求方法
export const http = {
  get<T = any>(url: string, config?: AxiosRequestConfig): Promise<T> {
    return service.get(url, config)
  },

  post<T = any>(url: string, data?: any, config?: AxiosRequestConfig): Promise<T> {
    return service.post(url, data, config)
  },

  put<T = any>(url: string, data?: any, config?: AxiosRequestConfig): Promise<T> {
    return service.put(url, data, config)
  },

  delete<T = any>(url: string, config?: AxiosRequestConfig): Promise<T> {
    return service.delete(url, config)
  }
}

export default service