import type { AxiosRequestConfig, AxiosInstance, AxiosResponse, AxiosError } from 'axios'
import axios from 'axios'
import qs from 'qs' 
export class RequestAxios<RequestType> {
    private axiosInstance: AxiosInstance 
    private readonly options 
    constructor(options) {
        this.options = options
        this.axiosInstance = axios.create(options)
        this.setupInterceptors()
    } 
    // 拦截器
    setupInterceptors() {
        this.axiosInstance.interceptors.request.use((config: AxiosRequestConfig) => {
            // ...
        })
        this.axiosInstance.interceptors.response.use((res) => res, err => {
            // ...
        })
    }

    // GET
    get<T = any>(config: AxiosRequestConfig): Promise<T> {
        return this.request({ ...config, method: 'GET' })
    }

    // POST
    post<T = any>(config: AxiosRequestConfig): Promise<T> {
        return this.request({ ...config, method: 'POST' })
    }

    // PUT 
    put<T = any>(config: AxiosRequestConfig): Promise<T> {
        return this.request({ ...config, method: 'PUT' })
    }

    // DELETE
    delete<T = any>(config: AxiosRequestConfig): Promise<T> {
        return this.request({ ...config, method: 'DELETE' })
    }

    // 请求
    request<T = any>(config: AxiosRequestConfig): Promise<T> {
        let conf = config
        conf = this.urlFordata(conf)
        return new Promise((resolve, reject) => {
            this.axiosInstance
                .request<any, AxiosResponse>(conf)
                .then((res: AxiosResponse) => {
                    if (!res) {
                        console.log('请求错误')
                    }
                    resolve(res)
                })
                .catch((err: AxiosError) => {
                    console.log(err)
                    reject(err)
                })
        })
    }

    // post 
    urlFordata(config: AxiosRequestConfig) {
        if (config.method?.toUpperCase() == 'GET') {
            return config
        }
        return {
            ...config,
            data: qs.stringify(config.data),
        }
    }
} 

// 创建实例
function Vaxios(baseurl) {
    return new RequestAxios({
        timeout: 2 * 1000,
        baseURL: baseurl, 
        headers: { 'Content-Type': 'application/json;charset=UTF-8' },
        requestOptions: {},      
    })
}
// 设置baseurl
export const devApi = Vaxios('http://127.0.0.1:xxx/xxxx');