✨ Added getChatMember method

get_chat_member.go

@@ -0,0 +1,33 @@
+package telegram
+
+import (
+	"errors"
+	"strconv"
+
+	json "github.com/pquerna/ffjson/ffjson"
+	http "github.com/valyala/fasthttp"
+)
+
+// GetChatMember get information about a member of a chat. Returns a ChatMember object on success.
+func (bot *Bot) GetChatMember(chat interface{}, user int) (*ChatMember, error) {
+	var args http.Args
+	args.Add("user_id", strconv.Itoa(user)) // Unique identifier of the target user
+
+	switch id := chatID.(type) {
+	case int64: // Unique identifier for the target chat...
+		args.Add("chat_id", strconv.FormatInt(id, 10))
+	case string: // ...or username of the target supergroup or channel (in the format @channelusername)
+		args.Add("chat_id", id)
+	default:
+		return nil, errors.New(errorInt64OrString)
+	}
+
+	resp, err := bot.get("getChatMember", &args)
+	if err != nil {
+		return nil, err
+	}
+
+	var data ChatMember
+	err = json.Unmarshal(*resp.Result, &data)
+	return &data, err
+}