package httpx

import (
	"bytes"
	"encoding/json"
	"io/ioutil"
	"net/http"
	"time"
)

func SendPost(_header http.Header, _url string, _post interface{}) ([]byte, error) {
	bytesData, err := json.Marshal(_post)
	if err != nil {
		return nil, err
	}

	req, err := http.NewRequest("POST", _url, bytes.NewBuffer(bytesData))
	if err != nil {
		return nil, err
	}

	req.Header.Set("Content-Type", "application/json;charset=UTF-8")
	for k, v := range _header {
		if len(v) > 0 {
			req.Header.Set(k, v[0])
		}
	}

	client := &http.Client{Timeout: 20 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	respBytes, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, err
	}
	return respBytes, nil
}