package main

import (
	"crypto/md5"
	"fmt"
	"io"
	"net/url"
)

func md5str(s string) string {
	h := md5.New()
	io.WriteString(h, s)
	return fmt.Sprintf("%x", h.Sum(nil))
}

func md5LeanworkForm(form url.Values) string {
	s := ""
	if _, ok := form["pickupUrl"]; ok {
		s += form["pickupUrl"][0]
		s += form["receiveUrl"][0]
		s += form["signType"][0]
		s += form["orderNo"][0]
		s += form["orderAmount"][0]
		s += form["orderCurrency"][0]
		s += form["customerId"][0]
		s += Config.LeanWork.MD5Key
	}
	return md5str(s)
}

func isLeanworkFormValid(form url.Values) bool {
	r := md5LeanworkForm(form)
	sign := form["sign"][0]
	return r == sign
}

func md4RpnFormP2P(form url.Values) string {
	return md5RpnForm(form, Config.Rpn.MD5P2P)
}

func md5RpnFormFAT(form url.Values) string {
	return md5RpnForm(form, Config.Rpn.MD5FAT)
}

func md5RpnForm(form url.Values, md5key string) string {
	s := ""
	if _, ok := form["version"]; ok {
		s += "sign_type=" + form["sign_type"][0] + "|"
		s += "mid=" + form["mid"][0] + "|"
		s += "notify_url=" + form["notify_url"][0] + "|"
		s += "order_id=" + form["order_id"][0] + "|"
		s += "order_amount=" + form["order_amount"][0] + "|"
		s += "order_time=" + form["order_time"][0] + "|"
		s += "user_id=" + form["user_id"][0] + "|"
		s += "user_name=" + form["user_name"][0] + "|"
		s += "user_cardno=" + form["user_cardno"][0] + "|"
		s += "key=" + md5key
	}
	return md5str(s)
}