package util

import (
	"bytes"
	"crypto/tls"
	"fmt"
	"io"
	"net/http"
	"time"
)

var (
	httpClient *http.Client
)

func init() {
	httpClient = &http.Client{
		Timeout: 20 * time.Second,
		Transport: &http.Transport{
			MaxIdleConns:        200,
			MaxIdleConnsPerHost: 50,
			MaxConnsPerHost:     500,
			IdleConnTimeout:     90 * time.Second,
			TLSClientConfig:     &tls.Config{InsecureSkipVerify: true},
		},
	}
}

// PostJson 请求
func HttpPostJson(link string, header map[string]string, json []byte) ([]byte, error) {
	req, err := http.NewRequest("POST", link, bytes.NewBuffer(json))
	if err != nil {
		return nil, err
	}

	for k, v := range header {
		req.Header.Add(k, v)
	}
	req.Header.Add("Content-Type", "application/json")

	resp, err := httpClient.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("%d:%s", resp.StatusCode, resp.Status)
	}
	return io.ReadAll(resp.Body)
}

// PostJson 请求
func HttpPutJson(link string, header map[string]string, json []byte) ([]byte, error) {
	req, err := http.NewRequest("PUT", link, bytes.NewBuffer(json))
	if err != nil {
		return nil, err
	}

	for k, v := range header {
		req.Header.Add(k, v)
	}
	req.Header.Add("Content-Type", "application/json")

	resp, err := httpClient.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("%d:%s", resp.StatusCode, resp.Status)
	}
	return io.ReadAll(resp.Body)
}

// Get 请求  link：请求url
func HttpGet(link string, header map[string]string) ([]byte, error) {
	req, err := http.NewRequest("GET", link, nil)
	if err != nil {
		return nil, err
	}

	for k, v := range header {
		req.Header.Add(k, v)
	}
	resp, err := httpClient.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("%d:%s", resp.StatusCode, resp.Status)
	}
	return io.ReadAll(resp.Body)
}

// Get 请求  link：请求url
func HttpDelete(link string, header map[string]string) ([]byte, error) {
	req, err := http.NewRequest("DELETE", link, nil)
	if err != nil {
		return nil, err
	}

	for k, v := range header {
		req.Header.Add(k, v)
	}
	resp, err := httpClient.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("%d:%s", resp.StatusCode, resp.Status)
	}
	return io.ReadAll(resp.Body)
}