Work on squads, some refactoring

Closes #14
See #8

lib/chatter/updaters.go

@@ -0,0 +1,43 @@
+// i2_bot – Instinct PokememBro Bot
+// Copyright (c) 2017 Vladimir "fat0troll" Hodakov
+
+package chatter
+
+import (
+	"github.com/go-telegram-bot-api/telegram-bot-api"
+	"lab.pztrn.name/fat0troll/i2_bot/lib/dbmapping"
+)
+
+// UpdateChatTitle updates chat title in database
+func (ct *Chatter) UpdateChatTitle(chatRaw *dbmapping.Chat, newTitle string) (*dbmapping.Chat, bool) {
+	chatRaw.Name = newTitle
+	_, err := c.Db.NamedExec("UPDATE chats SET name=:name WHERE id=:id", &chatRaw)
+	if err != nil {
+		c.Log.Error(err)
+		return chatRaw, false
+	}
+
+	return chatRaw, true
+}
+
+// UpdateChatTelegramID updates chat's TelegramID when it converts to supergroup
+func (ct *Chatter) UpdateChatTelegramID(update *tgbotapi.Update) (*dbmapping.Chat, bool) {
+	c.Log.Debug("Updating existing Telegram chat ID...")
+	chatRaw := dbmapping.Chat{}
+	err := c.Db.Get(&chatRaw, c.Db.Rebind("SELECT * FROM chats WHERE telegram_id=?"), update.Message.MigrateFromChatID)
+	if err != nil {
+		c.Log.Error(err.Error())
+		return &chatRaw, false
+	}
+	if update.Message.SuperGroupChatCreated {
+		chatRaw.ChatType = "supergroup"
+	}
+	chatRaw.TelegramID = update.Message.MigrateToChatID
+	_, err = c.Db.NamedExec("UPDATE chats SET chat_type=:chat_type, telegram_id=:telegram_id WHERE id=:id", &chatRaw)
+	if err != nil {
+		c.Log.Error(err.Error())
+		return &chatRaw, false
+	}
+
+	return &chatRaw, true
+}