import axios from 'axios'
import type { AxiosInstance, AxiosRequestConfig, AxiosResponse } from 'axios'
import { showFailToast } from 'vant'
import { TOKEN_KEY } from '@/utils/constants'

// 创建 axios 实例
const service: AxiosInstance = axios.create({
  baseURL: '/wlog/api/v1',
  timeout: 15000
})

// 请求拦截器
service.interceptors.request.use(
  (config) => {
    const token = localStorage.getItem(TOKEN_KEY)
    if (token) {
      config.headers['Authorization'] = `Bearer ${token}`
    }
    return config
  },
  (error) => {
    return Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(
  (response: AxiosResponse) => {
    const res = response.data
    
    // 业务成功
    if (res.success) {
      return res.data
    }
    
    // 业务失败
    showFailToast(res.message || '请求失败')
    return Promise.reject(new Error(res.message || '请求失败'))
  },
  (error) => {
    // 401 未登录或 Token 过期
    if (error.response?.status === 401) {
      localStorage.removeItem(TOKEN_KEY)
      localStorage.removeItem('worklog_user_info')
      window.location.href = '/login'
      return Promise.reject(error)
    }
    
    showFailToast(error.response?.data?.message || '网络错误')
    return Promise.reject(error)
  }
)

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

export default service