package lxCommon

import (
	"bytes"
	"crypto/tls"
	"github.com/bytedance/sonic"
	"golang.org/x/net/publicsuffix"
	"io"
	"io/ioutil"
	"mime/multipart"
	"net/http"
	"net/http/cookiejar"
	"os"
	"path/filepath"
	"time"
)

// url 路径 filename 文件的上传参数
func PostFile(url string, files map[string]string, ext map[string]string) ([]byte, error) {
	res := []byte{}
	//创建一个模拟的form中的一个选项,这个form项现在是空的
	bodyBuf := &bytes.Buffer{}
	bodyWriter := multipart.NewWriter(bodyBuf)
	for k, v := range files {
		//打开文件句柄操作
		file, err := os.Open(v)
		if err != nil {
			//fmt.Println("error opening file")
			return res, err
		}
		defer file.Close()
		//相当于现在还没选择文件, form项里选择文件的选项
		fileWriter, err := bodyWriter.CreateFormFile(k, filepath.Base(v))
		if err != nil {
			//fmt.Println("error writing to buffer")
			return res, err
		}
		//iocopy 这里相当于选择了文件,将文件放到form中
		_, err = io.Copy(fileWriter, file)
		if err != nil {
			return res, err
		}
	}
	//获取上传文件的类型,multipart/form-data; boundary=...
	contentType := bodyWriter.FormDataContentType()
	//上传的其他参数
	for key, val := range ext {
		_ = bodyWriter.WriteField(key, val)
	}
	//这个很关键,必须这样写关闭,不能使用defer关闭,不然会导致错误
	bodyWriter.Close()
	//发送post请求到服务端
	resp, err := http.Post(url, contentType, bodyBuf)
	if err != nil {
		return res, err
	}
	defer resp.Body.Close()
	res, err = ioutil.ReadAll(resp.Body)
	if err != nil {
		return res, err
	}
	return res, err
}

func NewClient() *http.Client {
	tr := &http.Transport{
		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
	}
	var c = &http.Client{
		Timeout:   time.Duration(1000 * time.Second),
		Transport: tr,
	}
	options := cookiejar.Options{
		PublicSuffixList: publicsuffix.List,
	}
	curCookieJar, _ := cookiejar.New(&options)
	c.Jar = curCookieJar
	return c
}

func HttpJsonStr(c *http.Client, method, url string, header map[string]string, body io.Reader, v *string) error {
	req, err := http.NewRequest(method, url, body)
	if err != nil {
		return err
	}
	for k, v := range header {
		req.Header.Add(k, v)
	}
	resp, err := c.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()
	by, err := ioutil.ReadAll(resp.Body)
	*v = string(by)
	return nil
}
func HttpJson(c *http.Client, method, url string, header map[string]string, body io.Reader, data interface{}) error {
	req, err := http.NewRequest(method, url, body)
	if err != nil {
		return err
	}
	for k, v := range header {
		req.Header.Add(k, v)
	}
	resp, err := c.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()
	by, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return err
	}
	err = sonic.Unmarshal(by, data)
	return err
}

func HttpGetFile(url, path string) error {
	res, err := http.Get(url)
	if err != nil {
		return err
	}
	f, err := os.Create(path)
	defer f.Close()
	if err != nil {
		return err
	}
	_, err = io.Copy(f, res.Body)
	return err
}

// 流式上传文件
func PostFilePipe(url string, files map[string]string) {
	r, w := io.Pipe()
	m := multipart.NewWriter(w)
	go func() {
		defer w.Close()
		defer m.Close()
		for k, f := range files {
			part, err := m.CreateFormFile(k, f)
			if err != nil {
				continue
			}
			file, err := os.Open(f)
			if err != nil {
				continue
			}
			defer file.Close()
			if _, err = io.Copy(part, file); err != nil {
				continue
			}
		}
	}()
	http.Post(url, m.FormDataContentType(), r)
}