add contact_search method

example/telegram/main.go

@@ -15,6 +15,7 @@ func usage() {
 	fmt.Print("    auth  <phone_number>            auth connection by code\n")
 	fmt.Print("    msg   <user_id> <msgtext>       send message to user\n")
 	fmt.Print("    list                            get contact list\n")
+	fmt.Print("    contacts_search                 search contact by pattern\n")
 	fmt.Println()
 }
 
@@ -26,7 +27,7 @@ func main() {
 		os.Exit(1)
 	}
 
-	commands := map[string]int{"auth": 1, "msg": 2, "list": 0}
+	commands := map[string]int{"auth": 1, "msg": 2, "list": 0, "contacts_search": 2}
 	valid := false
 	for k, v := range commands {
 		if os.Args[1] == k {
@@ -62,9 +63,12 @@ func main() {
 	case "msg":
 		user_id, _ := strconv.Atoi(os.Args[2])
 		err = m.SendMsg(int32(user_id), os.Args[3])
-
 	case "list":
 		err = m.GetContacts()
+	case "contacts_search":
+		pattern := string(os.Args[2])
+		limit, _ := strconv.Atoi(os.Args[3])
+		err = m.SearchContacts(pattern, int32(limit))
 	}
 
 	if err != nil {

mtproto.go

@@ -266,6 +266,33 @@ func (m *MTProto) GetContacts() error {
 	return nil
 }
 
+func (m *MTProto) SearchContacts(q string, limit int32) error {
+	resp := make(chan TL, 1)
+	m.queueSend <- packetToSend{TL_contacts_search{q, limit}, resp}
+	x := <-resp
+	list, ok := x.(TL_contacts_found)
+	if !ok {
+		return fmt.Errorf("RPC: %#v", x)
+	}
+
+	contacts := make(map[int32]TL_userContact)
+	for _, v := range list.users {
+		if v, ok := v.(TL_userContact); ok {
+			contacts[v.id] = v
+		}
+	}
+
+	for _, v := range list.users {
+		v := v.(TL_userForeign)
+		fmt.Printf(
+			"%-20s %30s\n",
+			"@" + v.username,
+			v.first_name)
+	}
+
+	return nil
+}
+
 func (m *MTProto) SendMsg(user_id int32, msg string) error {
 	resp := make(chan TL, 1)
 	m.queueSend <- packetToSend{