rpn.supertraderfx-cn/rpn.go

package main

import (
	"errors"
	"fmt"
	"math"
	"net/http"
	"net/url"
	"strconv"
	"time"
)

// var url = "https://deposit.paylomo.net/pay.php?r=payEasy"          //production
// var url = "https://deposit-mac.chinapaytech.com/pay.php?r=payEasy" //test
// var md5p2p = "370296119874502"
// var md5fat = "207841502473198"
type RpnReq struct {
	version      string
	sign_type    string
	mid          string
	notify_url   string
	order_id     string
	order_amount string
	order_time   string //YYYYMMDDHHMMSS
	user_id      string
	user_name    string
	user_cardno  string
	signature    string
	url          string //where to post entire data structure
}

// //build request from leanwork request forms
// func (m *RpnReq) buildReqByForm(form url.Values) RpnReq {
// 	r := RpnReq{}
// 	r.version = "1.1"
// 	r.sign_type = "MD5"
// 	r.mid = "EU85201311P2P"
// 	r.notify_url = "http://rpn.supertraderfx.ayvwd8em49pvoa3g.com/rpn_notify"
// 	r.order_id = form["orderNo"][0]
// 	r.order_amount = form["orderAmount"][0] //cents
// 	r.order_time = m.now()
// 	r.user_id = form["customerId"][0]
// 	r.user_name = "SuperForex"
// 	r.user_cardno = "6212262002002377849"
// 	r.signature = md5RpnFormP2P(r)
// 	*m = r
// 	return r
// }

func (m *RpnReq) buildReqByLeanworkRequestP2P(row LeanworkRequest, user_name string, user_cardno string) RpnReq {
	r := RpnReq{}
	r.version = "1.1"
	r.sign_type = "MD5"
	r.mid = Config.Rpn.MIDP2P
	r.notify_url = "http://rpn.supertraderfx.ayvwd8em49pvoa3g.com/rpn_notify"
	r.order_id = row.OrderNo
	r.order_amount = m.translateAmountFromLeanwork(row.OrderAmount)
	r.order_time = m.now()
	r.user_id = row.CustomerId
	r.user_name = user_name
	r.user_cardno = user_cardno
	r.signature = md5RpnFormP2P(r)
	*m = r
	return r
}

func (m *RpnReq) buildReqByLeanworkRequestFAT(row LeanworkRequest, user_name string, user_cardno string) RpnReq {
	r := RpnReq{}
	r.version = "1.1"
	r.sign_type = "MD5"
	r.mid = Config.Rpn.MIDFAT
	r.notify_url = "http://rpn.supertraderfx.ayvwd8em49pvoa3g.com/rpn_notify"
	r.order_id = row.OrderNo
	r.order_amount = m.translateAmountFromLeanwork(row.OrderAmount)
	r.order_time = m.now()
	r.user_id = row.CustomerId
	r.user_name = user_name
	r.user_cardno = user_cardno
	r.signature = md5RpnFormFAT(r)
	*m = r
	return r
}

//from 0.1 to 10 cents
func (m *RpnReq) translateAmountFromLeanwork(from string) string {
	f, _ := strconv.ParseFloat(from, 32)
	f = f * 100 //convert to cents
	t := int(math.Ceil(f))
	s := strconv.Itoa(t)
	return s
}

func (m *RpnReq) now() string {
	t := time.Now()
	return t.Format("20060102150405")
}

//send request to RPN to initiate transaction
func (m *RpnReq) SendReq(form url.Values) (*http.Response, error) {
	return nil, nil
	// r := m.buildReqByForm(form)
	// hc := http.Client{Timeout: 15 * time.Second}

	// myForm := url.Values{}
	// myForm.Set("version", r.version)
	// myForm.Set("sign_type", r.sign_type)
	// myForm.Set("mid", r.mid)
	// myForm.Set("notify_url", r.notify_url)
	// myForm.Set("order_id", r.order_id)
	// myForm.Set("order_amount", r.order_amount)
	// myForm.Set("order_time", r.order_time)
	// myForm.Set("user_id", r.user_id)
	// myForm.Set("user_name", r.user_name)
	// myForm.Set("user_cardno", r.user_cardno)
	// myForm.Set("signature", r.signature)

	// //req, err := http.NewRequest("POST", "https://lawipac.com/dumprequest.php", strings.NewReader(myForm.Encode()))
	// req, err := http.NewRequest("POST", Config.Rpn.UrlTest, strings.NewReader(m.encode()))
	// if err != nil {
	// 	panic("wrong")
	// }
	// req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
	// req.Header.Add("content-Length", strconv.Itoa(len(form.Encode())))
	// return hc.Do(req)
	//Config.Rpn.UrlTest
	// return http.PostForm(Config.Rpn.UrlTest, myForm)
	//return http.PostForm("https://lawipac.com/dumprequest.php", myForm)

}

//encode without disturbing it's original order
func (m *RpnReq) encode() string {
	s := "version=" + m.version
	s += "&sign_type=" + m.sign_type
	s += "&mid=" + m.mid
	s += "&notify_url=" + url.QueryEscape(m.notify_url)
	s += "&order_id=" + m.order_id
	s += "&order_amount=" + m.order_amount
	s += "&order_time=" + m.order_time
	s += "&user_id=" + m.user_id
	s += "&user_name=" + m.user_name
	s += "&user_cardno=" + m.user_cardno
	s += "&signature=" + m.signature
	return s
}

func retrieveFormValue(form url.Values, key string) (r string, err error) {

	if _, ok := form[key]; ok {
		r = form[key][0]
		err = nil
	} else {
		r = ""
		err = errors.New("Key [" + key + "] not found in HTTP request")
	}
	return r, err
}

//receive RPN user name and card number
func rpnNameAndCard(w http.ResponseWriter, r *http.Request) {
	if r.Method != "POST" {
		w.WriteHeader(http.StatusMethodNotAllowed)
		fmt.Fprintf(w, "invalid request")
		return
	}
	r.ParseForm()
	id := r.FormValue("id")
	sign := r.FormValue("sign")
	user_name := r.FormValue("name")
	user_card := r.FormValue("card")
	rpn_type := r.FormValue("rpnType")

	if !(id != "" && sign != "" && user_name != "" && user_card != "") {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "missing parameters")
		return
	}

	row, err := getRequestRowByIdAndSign(id, sign)
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "bad parameters")
		return
	}

	ro := RpnReq{}
	if rpn_type == "rpnp2p" {
		ro.buildReqByLeanworkRequestP2P(row, user_name, user_card)
	} else {
		ro.buildReqByLeanworkRequestFAT(row, user_name, user_card)
	}
	//build rpn redirect page and send it
	ro.sendRedirect(w, row)
}

func (m *RpnReq) sendRedirect(w http.ResponseWriter, row LeanworkRequest) {
	//create db record

	m.url = Config.Rpn.Url
	tmpl.ExecuteTemplate(w, "rpnCallOutRedirect", *m)
}