package fileuploaddownload

import (
	"bytes"
	"fmt"
	"io"
	"io/ioutil"
	"mime/multipart"
	"net/http"
	"net/url"
	"os"
	"strings"
)

func httpGet(urlPath string) {
	resp, err := http.Get(urlPath)
	if err != nil {
		// handle error
	}

	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		// handle error
	}
	fmt.Printf("Get---------->%v\n", string(body))
	// fmt.Println(string(body))
}

func httpPost(urlPath string) {
	resp, err := http.Post(urlPath,
		"application/x-www-form-urlencoded",
		strings.NewReader("key=1&sign=250&file=G:\\goobject\\src\\git_public\\gin-vue-admin\\gin_server_admin\\uploads\\file310dcbbf4cce62f762a2aaa148d556bd_20211222135245.jpg"))
	if err != nil {
		fmt.Println(err)
	}

	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		// handle error
	}

	// fmt.Println(string(body))
	fmt.Printf("Post---------->%v\n", string(body))
}

func httpPostForm(urlPath string) {
	resp, err := http.PostForm(urlPath,
		url.Values{"key": {"1"}, "sign": {"123"}, "file": {"G:\\goobject\\src\\git_public\\gin-vue-admin\\gin_server_admin\\uploads\\file310dcbbf4cce62f762a2aaa148d556bd_20211222135245.jpg"}})

	if err != nil {
		// handle error
	}

	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		// handle error
	}

	// fmt.Println(string(body))
	fmt.Printf("PostForm---------->%v\n", string(body))
}

func httpDoes(urlPath string) {
	client := &http.Client{}

	req, err := http.NewRequest("POST", urlPath, strings.NewReader("key=1&sign=250&file=G:\\goobject\\src\\git_public\\gin-vue-admin\\gin_server_admin\\uploads\\file310dcbbf4cce62f762a2aaa148d556bd_20211222135245.jpg"))
	if err != nil {
		// handle error
	}

	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.Header.Set("Cookie", "name=baidu")

	resp, err := client.Do(req)

	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		// handle error
	}

	// fmt.Println(string(body))
	fmt.Printf("NewRequest-----POST----->%v\n", string(body))
}

func postFile(filename string, targetUrl string) error {
	bodyBuf := &bytes.Buffer{}
	bodyWriter := multipart.NewWriter(bodyBuf)

	//关键的一步操作
	fileWriter, err := bodyWriter.CreateFormFile("uploadfile", filename)
	if err != nil {
		fmt.Println("error writing to buffer")
		return err
	}

	//打开文件句柄操作
	fh, err := os.Open(filename)
	if err != nil {
		fmt.Println("error opening file")
		return err
	}
	defer fh.Close()

	//iocopy
	_, err = io.Copy(fileWriter, fh)
	if err != nil {
		return err
	}

	contentType := bodyWriter.FormDataContentType()
	bodyWriter.Close()

	resp, err := http.Post(targetUrl, contentType, bodyBuf)
	if err != nil {
		return err
	}
	defer resp.Body.Close()
	resp_body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return err
	}
	// fmt.Println(resp.Status)
	// fmt.Println(string(resp_body))

	fmt.Printf("NewRequest---%v--POST----->%v\n", resp.Status, string(resp_body))
	return nil
}

//创建表单文件
func addFile(urlPath string) {
	var buff bytes.Buffer
	// 创建一个Writer
	writer := multipart.NewWriter(&buff)
	writer.WriteField("key", "1")
	writer.WriteField("sign", "250")
	// 写入图片字段
	// CreateFormFile第一个参数是 表单对应的字段名
	// 第二个字段是对应上传文件的名称
	w, err := writer.CreateFormFile("file", "14250.jpg")
	if err != nil {
		fmt.Println("创建文件失败: ", err)
		return
	}
	data, err := ioutil.ReadFile("G:\\goobject\\src\\git_public\\gin-vue-admin\\gin_server_admin\\uploads\\file310dcbbf4cce62f762a2aaa148d556bd_20211222135245.jpg")
	if err != nil {
		fmt.Println("读取图片发生错误: ", err)
		return
	}
	// 把文件内容写入
	w.Write(data)
	writer.Close()
}