package tools

import (
	"bufio"
	"bytes"
	"compress/gzip"
	"encoding/json"
	"io"
	"io/ioutil"
	"log"
	"net/http"
	"net/url"
	"regexp"
	"strings"
)

func GetStream(url string) (*bufio.Reader, io.ReadCloser, error) {
	resp, err := http.Get(url)
	if err != nil {
		return nil, nil, err
	}

	reader := bufio.NewReader(resp.Body)
	return reader, resp.Body, nil
}
func PostFormStream(url string, data url.Values) (*bufio.Reader, io.ReadCloser, error) {
	resp, err := http.PostForm(url, data)
	if err != nil {
		return nil, nil, err
	}
	reader := bufio.NewReader(resp.Body)
	return reader, resp.Body, nil
}
func Get(url string) string {
	res, err := http.Get(url)
	if err != nil {
		log.Println(err)
		return ""
	}
	var reader io.ReadCloser
	if res.Header.Get("Content-Encoding") == "gzip" {
		reader, err = gzip.NewReader(res.Body)
		if err != nil {
			return ""
		}
	} else {
		reader = res.Body
	}
	//utf8Reader := transform.NewReader(reader,
	//	simplifiedchinese.GBK.NewDecoder())
	robots, err := ioutil.ReadAll(reader)
	res.Body.Close()
	if err != nil {
		log.Println(err)
		return ""
	}
	return string(robots)
}

// Post("http://xxxx","application/json;charset=utf-8",[]byte("{'aaa':'bbb'}"))
func Post(url string, contentType string, body []byte) (string, error) {
	if contentType == "" {
		contentType = "application/x-www-form-urlencoded"
	}
	res, err := http.Post(url, contentType, strings.NewReader(string(body)))
	if err != nil {
		return "", err
	}
	defer res.Body.Close()
	content, err := ioutil.ReadAll(res.Body)
	if err != nil {
		return "", err
	}
	return string(content), nil
}
func PostHeader(url string, msg []byte, headers map[string]string) (string, error) {
	client := &http.Client{}

	req, err := http.NewRequest("POST", url, strings.NewReader(string(msg)))
	if err != nil {
		return "", err
	}
	for key, header := range headers {
		req.Header.Set(key, header)
	}
	resp, err := client.Do(req)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return "", err
	}
	return string(body), nil
}

func IsMobile(userAgent string) bool {
	mobileRe, _ := regexp.Compile("(?i:Mobile|iPod|iPhone|Android|Opera Mini|BlackBerry|webOS|UCWEB|Blazer|PSP)")
	str := mobileRe.FindString(userAgent)
	if str != "" {
		return true
	}
	return false
}
func PostJson(url string, msg []byte) (string, error) {
	headers := make(map[string]string)
	headers["Content-Type"] = "application/json;charset=utf-8"
	res, err := PostHeader(url, msg, headers)
	return res, err
}

// PostJSON 发送HTTP POST请求并发送JSON数据
func PostJSON2(url string, jsonData interface{}) ([]byte, error) {
	// 将JSON数据转换为字节切片
	jsonBytes, err := json.Marshal(jsonData)
	if err != nil {
		return nil, err
	}

	// 创建一个HTTP请求
	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonBytes))
	if err != nil {
		return nil, err
	}
	req.Header.Set("Content-Type", "application/json")

	// 发送HTTP请求并获取响应
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	// 读取响应的内容
	respBody, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, err
	}

	return respBody, nil
}

// 发送http post请求数据为form
func PostForm(url string, data url.Values) (string, error) {
	resp, err := http.PostForm(url, data)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()
	content, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return "", err
	}
	return string(content), nil
}

// Get请求携带header
func GetWithHeader(url string, headers map[string]string) (string, error) {
	client := &http.Client{}

	req, err := http.NewRequest("GET", url, nil)
	if err != nil {
		return "", err
	}
	for key, header := range headers {
		req.Header.Set(key, header)
	}
	resp, err := client.Do(req)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return "", err
	}
	return string(body), nil
}

// 获取当前访问的地址
func GetCurrentURL(r *http.Request) (Url string) {
	scheme := "http://"
	if r.TLS != nil {
		scheme = "https://"
	}
	return strings.Join([]string{scheme, r.Host, r.RequestURI}, "")
}

// 获取当前访问的Host
func GetHost(r *http.Request) (Url string) {
	scheme := "http://"
	if r.TLS != nil || r.Header.Get("X-Forwarded-Proto") == "https" {
		scheme = "https://"
	}
	return strings.Join([]string{scheme, r.Host}, "")
}