Xest

Xest connects to various cryptocurrencies exchanges to provide an overview of your crypto assets

On each exchange, it publicly retrieves:

• Exchange status and time
• market tickers (WIP)

In your wallet, it privately:

• retrieves currency balances and transaction (WIP)
• visually display the information in a webview (WIP)

You need an API key on the exchange to get it to work properly.

DISCLAIMER : Although this is a web application, it is not designed to be run on a publicly accessible system or network. Only use it on your machine, after making sure it is not remotely accessible.

Security is not the current concern. The bare minimum has been done (secrets are on your system, not in the code), and it is possible there are times and places where secrets are exposed during runtime.

Learning

mix docs

TODO: describe the setup, on a dev machine, of apikey & secret for authentication.

Testing

To run the test suite (async):

mix test

For a TDD setup, you can use

mix test.watch

Note the tests run locally only with cassettes (recorded network request/responses). The cassettes must be kept up to date by a developer, but this requires a specific setup with an authentication token, and therefore cannot be automated.

For coverage you can use

mix coveralls

For code analysis you can use

mix credo

Running

mix phx.server

Dev

This is an Elixir Umbrella project, trying to remain monorepo as long as possible.

Currently there are 4 apps here:

• Xest: the library containing domain models and various utilities for client apps
• XestBinance: the client app connecting to binance
• XestKraken: the client app connecting to kraken
• XestWeb: the Web interface with live views

For interactive testing you can use iex:

alexv@pop-os:/opt/Projects/elixir-playground/xest_umbrella$ iex -S mix
Erlang/OTP 23 [erts-11.1.3] [source] [64-bit] [smp:12:12] [ds:12:12:10] [async-threads:1] [hipe]

==> xest
Compiling 5 files (.ex)
Generated xest app
==> xest_web
Compiling 15 files (.ex)
Generated xest_web app

iex(1)> Xest.Binance.system_status()
%{"msg" => "normal", "status" => 0}

TODO : describe the process to test against and update cassettes

Design

apps

graph TD
    B[:xest_web] --> |periodic| D{:xest}

    D --> |periodic| E[:xest_kraken]
    D --> |periodic| F[:xest_binance]

time

Features

• [X] Exchange Clock
• [X] Exchange Status
• [X] Account Balances
• [X] Account Transactions
• [ ] Ticker retrieval
• [ ] Asset visualisation
• [ ] Spot Order
• [ ] not sure Do you want to help ? just open an issue.

Supported Exchanges:

• [X] Binance
• [X] Kraken
• [ ] Bitstamp
• [ ] Join and add your favorite...

Will Not Do (unless you're ready to help out)

• Accounting
• Advanced Market Data (ie. no candles here, only ticker data)
• Trading