This is a Telegram bot that greets users at 9 am.
9 am, which timezone? All of them.
So at 9 am UTC it send something like "Good morning Canary Islands, Lisbon and London" if DST is not enabled, or "Good morning Azores" if it is. At 8 am UTC it will send "Good morning Berlin, Paris, and Madrid" if DST is not active, or "Good morning Canary Islands, Lisbon and London" if it is. And that for almost every timezone that there is in the world.
It's not meant to be very useful, just a way to annoy a friend who complained that I'd greet them with a "good morning" sticker in the evening.
First, make sure that you have set up your Rust toolchain correctly. Check out the instructions in the official Rust documentation.
You need a Telegram bot token to actually run a bot. If you don't have one, get it from BotFather in Telegram.
Then clone the repo if you haven't already, and create an .env file with a
Telegram bot token.
TELEGRAM_BOT_TOKEN=<your token here>
Then cargo run normally, or cargo build depending on whether you want a
debug or a production build.
Once the app is running, it will receive any messages that your bot is sent
in Telegram and add the chat ID to a chat_ids.txt file (note that this bot does
not have any DB dependencies). It will then send messages to each active chat when
it's time to greet users.
/start(or anything else, really) signs up a user to start receiving greetings./stopunsubscribes a user.