package unionpay

import (
	"bytes"
	"encoding/base64"
	"encoding/hex"
	"fmt"
	"net/http"
	"net/url"
	"sort"
	"strings"
	"time"

	"git.chuangxin1.com/cx/util"
	"git.chuangxin1.com/cx/util/binding"
)

const (
	// TimeFmtNumeric format of time to numeric
	TimeFmtNumeric = `20060102150405`
)

var (
	base64Encode = base64.StdEncoding.EncodeToString
	base64Decode = base64.StdEncoding.DecodeString
	hexDump      = hex.EncodeToString
)

// TimeToNumericStr 时间转换为数字格式字符串
func TimeToNumericStr(t time.Time) string {
	return t.Format(TimeFmtNumeric)
}

// createLinkString unionpay sdk func
func createLinkString(params map[string]string, isSort, isEncode bool) string {
	var (
		keys []string
		ss   []string
	)
	if isSort {
		for key := range params {
			keys = append(keys, key)
		}

		sort.Strings(keys)
		for _, v := range keys {
			value := v + "="
			if isEncode {
				value += url.QueryEscape(params[v])
			} else {
				value += params[v]
			}
			ss = append(ss, value)
		}
	} else {
		for k, v := range params {
			value := k + "="
			if isEncode {
				value += url.QueryEscape(v)
			} else {
				value += v
			}
			ss = append(ss, value)
		}
	}
	return strings.Join(ss, "&")
}

// POST 提交请求
func post(uri string, body []byte) (res ReqRespose, err error) {
	var msg util.Message
	headers := make(map[string]string)

	headers["Accept"] = "text/html; charset=UTF-8"
	headers["Accept-Encoding"] = "gzip, deflate, br"
	headers["Content-Type"] = "application/x-www-form-urlencoded; charset=UTF-8"
	msg, err = util.Post(uri, "", "", headers, bytes.NewReader(body))
	if err != nil {
		return
	}

	if msg.StatusCode != http.StatusOK {
		err = fmt.Errorf("Request status code %d", msg.StatusCode)
		return
	}
	/*
		fmt.Println("*************************************")
		fmt.Println(uri)
		fmt.Println(msg.StatusCode)
		fmt.Println(msg.Header)
		fmt.Println(string(msg.Body))
		fmt.Println("*************************************")
		// */
	var values url.Values
	values, err = url.ParseQuery(string(msg.Body))
	if err != nil {
		return
	}
	err = binding.MapForm(&res, values)
	/*
		if err != nil {
			return
		}
			bs, _ := json.Marshal(&res)
			fmt.Println(string(bs))
			fmt.Println("respCode", res.RespCode, "respMsg", res.RespMsg)
			// */
	return
}