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Documentation

Warning

First of all, please note that this bot is a proof-of-concept!
No guarantees are provided if you use it, including guarantees of support, so use it in the real world at your own risk!

History

Greed was developed as an high school finals project and then continued independently of the school thanks to the contributors of various developers, who you see credited on each individual commit.

The bot has since then ceased to be developed, but issues and pull request still are sometimes handled on the creator's free time.

Features

Greed supports:

  • for users:

    • creating an order
    • listing the status of all orders
    • adding more funds to the bot's wallet
      • via cash
      • via Telegram Payments
    • changing language
    • displaying information and help about the bot

  • for store managers:

    • creating / editing / deleting products
    • receiving a live stream of orders to fulfill or refund as messages
    • manually adding funds to an user
    • displaying the list of performed transactions
    • exporting the list of performed transactions as a CSV file
    • adding other users as managers and specifying their permissions

Installation via Docker Engine

This installation procedure assumes you are on a system with docker installed, with a supported CPU architecture.

Requirements

Steps

  1. Run a container using the project's Docker image:

    # docker run --volume "$(pwd)/config:/etc/greed" --volume "$(pwd)/strings:/usr/src/greed/strings" --volume "$(pwd)/data:/var/lib/greed" ghcr.io/steffo99/greed

  2. Edit the configuration file config.toml that was created in the strings directory, adding your bot and payment tokens to it:

    # nano config/config.toml

    (Press Ctrl+X and then two times Enter to save and quit nano.)

  3. Optional: customize the files in the strings folder for custom messages.

  4. Start the bot:

    python -OO core.py

  5. Open Telegram, and send a /start command to your bot to be automatically promoted to 💼 Manager.

  6. Stop the bot by pressing Ctrl+C.

Running the bot

After the installation, to run the bot, you'll need to:

  1. Run its Docker container from the same directory you installed it from: 
    # docker run --volume "$(pwd)/config:/etc/greed" --volume "$(pwd)/strings:/usr/src/greed/strings" --volume "$(pwd)/data:/var/lib/greed" ghcr.io/steffo99/greed

Keep the bot running

If you want to keep the bot open even after you closed your terminal window, you'll need to pass the appropriate arguments to the docker command:

  1. Set the Docker container to always restart and to detach on successful start: 
    # docker run --detach --restart always --volume "$(pwd)/config:/etc/greed" --volume "$(pwd)/strings:/usr/src/greed/strings" --volume "$(pwd)/data:/var/lib/greed" ghcr.io/steffo99/greed

Updating

To update the bot, run the following commands:

  1. Find the ID of the Docker container of the bot:

    # docker container ls
CONTAINER ID   IMAGE                    COMMAND                CREATED         STATUS                  PORTS     NAMES
abcdefabcdef   ghcr.io/steffo99/greed   "python -OO core.py"   6 seconds ago   Up Less than a second             relaxed_hypatia

  2. Stop the Docker container of the bot:

    # docker container stop abcdefabcdef

  3. Remove the Docker container of the bot:

    # docker container rm abcdefabcdef

  4. Pull the latest Docker image of the bot:

    # docker pull ghcr.io/steffo99/greed:latest

  5. Restart the bot with the newly downloaded image:

    # docker run --detach --restart always --volume "$(pwd)/config:/etc/greed" --volume "$(pwd)/strings:/usr/src/greed/strings" --volume "$(pwd)/data:/var/lib/greed" ghcr.io/steffo99/greed

Installation via pip

This installation procedure assumes you are on a Linux system, using bash, and with python installed.

Requirements

Consider renting a virtual private server (VPS) to host the bot on; a cheap one should do, as greed is pretty lightweight! :)

Steps

  1. Download the project files by running:

    $ git clone https://github.com/Steffo99/greed.git

  2. Enter the newly created folder:

    $ cd greed

  3. Create a new venv:

    $ python3 -m venv venv

  4. Activate the venv:

    $ source venv/bin/activate

  5. Install the project requirements:

    $ pip install -r requirements.txt

  6. Optional: For colored console output, install coloredlogs:

    $ pip install coloredlogs

  7. Generate the configuration file:

    $ python -OO core.py

  8. Edit the configuration file config.toml, adding your bot and payment tokens to it:

    $ nano config/config.toml

    (Press Ctrl+X and then two times Enter to save and quit nano.)

    Beware to not enter your configuration in the template_config.toml file, as it will be ignored and may cause trouble when updating.

  9. Optional: customize the files in the strings folder for custom messages.

  10. Start the bot:

    $ python -OO core.py

  11. Open Telegram, and send a /start command to your bot to be automatically promoted to 💼 Manager.

  12. Stop the bot by pressing Ctrl+C.

Running the bot

After the installation, to run the bot, you'll need to:

  1. Activate the venv (if it has not already been activated in the current console session):

    $ source venv/bin/activate

  2. Start the bot:

    $ python -OO core.py

Keep the bot running

If you want to keep the bot open even after you closed your terminal window, you'll need to use an external program, such as:

  • screen (easier, but doesn't restart automatically)
  • systemd (recommended, but more complex)

screen

  1. Open a screen that will be running the bot with the following command: 
    $ screen venv/bin/python -OO core.py
    To safely detach the screen, press Ctrl+A and then Ctrl+D.

systemd

Assuming you downloaded greed in /srv/greed:

  1. Create a new user named greed:

    $ useradd greed --system

  2. Give ownership of the greed folder you downloaded earlier to the greed user:

    $ chown -R greed: /srv/greed

  3. Create a new file in /etc/systemd/system named bot-greed.service with the following contents:

    [Unit]
Name=bot-greed
Description=Greed Bot
Wants=network-online.target
After=network-online.target nss-lookup.target

[Service]
Type=exec
User=greed
WorkingDirectory=/srv/greed
ExecStart=/srv/greed/venv/bin/python -OO /srv/greed/core.py
Environment=PYTHONUNBUFFERED=1

[Install]
WantedBy=multi-user.target

  4. Start the bot-greed service:

    $ systemctl start bot-greed

  5. If everything goes well, enable the bot-greed service, so it will automatically start on a reboot:

    $ systemctl enable bot-greed

Updating

To update the bot, run the following commands:

$ git stash
$ git pull
$ git stash pop

If you're using an older version of greed, you may need to recreate the configuration, as greed doesn't use config.ini anymore and but uses config.toml instead.

Technical structure

The bot is composed of two parts:

  • core.py, which handles communication with Telegram and dispatches updates to the workers
  • worker.py, which handles the conversation flow for a single user, and runs on a separate thread for each conversation

Other resources used by the bot are:

  • utils.py, containing utility methods
  • nuconfig.py, containing the configuration loader
  • database.py, handling interactions with a SQLite or PostgreSQL database
  • localization.py and strings/*, managing the bot's languages
  • config/*, initially containing the template to generate the configuration file, then also the configuration file itself after the bot has been run once