Hazel

What is this?

• A Telegram Bot written in Golang - Parses messages and records reminders.
• A Cron-like Bot - Checks for overdue reminders periodically.
• Docker / Docker-Compose
• Sqlite3
• Nginx / Self-Signed SSL Cert
• Digital Ocean
• Github hooks for deployment

Walkthrough of Code

• Part 1: https://aranair.github.io/posts/2016/12/25/how-to-set-up-golang-telegram-bot-with-webhooks/
• Part 2: https://aranair.github.io/posts/2017/01/21/how-i-deployed-golang-bot-on-digital-ocean/
• Part 3: https://aranair.github.io/posts/2017/08/20/golang-telegram-bot-migrations-cronjobs-and-refactors/

See It in Action

Commands

• Hazel, anything: replies with korean Hello :P
• remind buy dinner
• remind me to do this and this
• remind me to sleep :9jul 10pm
• remind me to buy chocolate :today 10pm
• remind me to buy a gift :tomorrow 10pm
• clear 2
• clearall
• list

Resetting Item Number for Resetting

• Unfortunately will deprecate support for multi-tenant bots but I've enabled this for personal use.

How to Run?

• Create a configs.toml file
• docker-compose up or go run cmd/webapp/main.go

How to Deploy?

• Set up git hooks in production
• git push production master

Sample post-receive hook

#!/bin/sh

git --work-tree=/var/app/remindbot --git-dir=/var/repo/site.git checkout -f
cd /var/app/remindbot
docker-compose build
docker-compose down
docker-compose -d

External Package Dependencies

• No Telegram-"api" packages were used, just some regex and http.
• github.com/mattn/go-sqlite3
• github.com/BurntSushi/toml
• github.com/justinas/alice
• github.com/gorilla/context
• github.com/julienschmidt/httprouter

License

MIT