find existing user form CRM database, and reply differently.

eventSubscribe.go

 	"io/ioutil"
 	"log"
 	"net/http"
+	"time"
 )
 
 func onSubscribe(in InWechatMsg) {
 	openID := in.header.FromUserName
-	//getUser fromCRM
-	info := WechatUserInfo{}
-	info.getUserInfo(in.header.FromUserName, "zh-CN")
-	log.Println(openID + "  information get above onSubscribe")
+	//check whether we have his own record in the CRM system
+	info, found, err := crmFindOpenID("weid")
+	log.Println(info)
+	//existing user
+	if found && err == nil {
+		sendGreeting4ExistingUser(in, info)
+		return
+	}
+
+	//new user
+	if !found && err == nil { //something is seriously wrong
+		//get user info from wechat
+		info := WechatUserInfo{}
+		err := info.getUserInfo(openID, "zh_CN")
+		if err != nil {
+			log.Printf("ERROR: failed to get userinfo [%s] ", openID)
+			log.Println(err)
+			//registerNewUser(openID)
+		} else {
+			//registerNewUserWithInfo(openID, info)
+		}
+		//AskUserFillupBasicInfo()
+	}
+
+	//some error
+	if err != nil {
+
+	}
 }
 
 //WechatUserInfo response for wechat user info.
 	TagIDList     []int32 `json:"tagid_list"`
 }
 
-func (m *WechatUserInfo) getUserInfo(openID string, lang string) {
+func (m *WechatUserInfo) getUserInfo(openID string, lang string) (err error) {
 	url := m.getURL(openID, lang)
 	resp, err := http.Get(url)
 	if err != nil {
+		*m = WechatUserInfo{}
+		return err
 	}
 	b, err := ioutil.ReadAll(resp.Body)
 	err = json.Unmarshal(b, m)
-	log.Println(m)
+	return nil
 }
+
 //lang 返回国家地区语言版本，zh_CN 简体，zh_TW 繁体，en 英语
 func (m *WechatUserInfo) getURL(openID, lang string) string {
+	if lang != "zh_CN" && lang != "zh_TW" && lang != "en" {
+		log.Printf("WechatUserInfo/getURL: Unknow Lang %s, change to zh_CN", lang)
+		lang = "zh_CN"
+	}
 	atk, _ := GetAccessToken()
 	u := fmt.Sprintf("https://api.weixin.qq.com/cgi-bin/user/info?access_token=%s&openid=%s&lang=%s", atk, openID, lang)
 	return u
 func (m *WechatUserInfo) save2CRM() {
 
 }
+
+func askUserFillupBasicInfo(in InWechatMsg) {
+	first := "欢迎加入海外学子之家，这里凝聚着哈工大人在澳洲的，勤奋，努力和奋斗"
+	url := "http://wechat.hitxy.org.au/profile_newly_register"
+	remark := "如果您是首次加入本社区，请点击详情完善您的个人资料"
+	communityName := "哈工大澳洲校友会"
+	joinDate := time.Now().Format("2006-Jan-02")
+	templateSendJoinCommunity(in.header.FromUserName, url, first, remark, communityName, joinDate)
+}
+
+func sendGreeting4ExistingUser(in InWechatMsg, info crmLeadInfo) {
+
+	first := "欢迎" + info.Name + "返回澳洲校友会"
+	url := "http://wechat.hitxy.org.au/profile_newly_register"
+	remark := ""
+	communityName := "哈工大澳洲校友会"
+	joinDate := info.getCreatedAt().Format("2006-Jan-02")
+	templateSendJoinCommunity(in.header.FromUserName, url, first, remark, communityName, joinDate)
+
+}