This is my first month learning Golang. I build a dictionary on Telegram Bot platform.

1. My first month with Golang
Building a Chat bot on
Telegram

2. How to start
• Get an idea
• Get API key from BotFather
• Run a service from your computer or server in any
language
• Programming Logic

3. Programming logic
• If then…else if …. else if…end
• - /start
• - /help

4. My bot
• - Dictionary bots: @envndictbot @thesaurusdictbot
• - Logic:
• If /start : welcome message
• If /help: help message
• If any word: check database to get definition
• If word from group chat: filter bot name

5. Flow chart(1)
Telegram Server Your computer
Polling
Messages request
limit<=100
Users
Message
Polling:
/getUpdates?offset=*&limit=*

6. Implementation

7. Flow chart(2)
Telegram Server Your computer
Users
Response
Text:*
ForceReply: *
KeyboardMarkup:*
Response
Response

8. Implementation

9. Number of ratings
Days Reviews
1 3
2 12
3 35
4 53
5 85

10. Storebot

11. Analytics
• Using redis: to count number of user, words
• Logging and email notification

12. Analytics
1 hi 150
2 hello 105
3 fuck 98
4 sex 72
5 good 63
6 book 59
7 love 58
8 start 55
9 go 30
10 ok 27
11 thesaurus 27
12 stop 21
13 apple 19
14 help 19
15 car 18

13. Avoid spam
• Using regular expression to validate bot input and
reduce work load
• Skip group message which not related to your bot
• Blacklist spammers

14. Design logo

15. Libraries
• https://storebot.me/
• Bot API https://core.telegram.org/bots/api
• My bot: https://github.com/aladine/envndictbot
• Libraries:
• github.com/rockneurotiko/go-tgbot
• https://github.com/tucnak/telebot

16. What I learnt
• Restful API
• Using log and email notification
• Build analytics using redis
• Write a go package
• User experience