Setup

• Clone repo
• Go to Alpha Vantage docs to generate free API_KEY
• Create .env file at the root of project and put the following contents inside:

VANTAGE_KEY=<your_api_key>

Local

cargo build -r

Help

./target/release/exchange_rates -h

List of currency codes

./target/release/exchange_rates -l

Example conversion of 7.50PLN to USD

./target/release/exchange_rates -t USD -f PLN -a 7.50

Docker

Build

docker build . -t exchange

Help

docker run exchange -h

List of currency codes

docker run exchange -l

Example conversion of 7.50PLN to USD

docker run exchange -t USD -f PLN -a 7.50

Example result

Exchange from Polish Zloty into United States Dollar:
Exchange rate: 0.25090000,
7PLN = 1.7563USD

Usage / Help

Usage: exchange_rates [OPTIONS]

Options:
  -l, --list             Prints a list of available country codes with their corresponding name
  -t, --to <TO>          The destination currency for the exchange rate. For example: `--to=USD`
  -f, --from <FROM>      The currency you would like to get the exchange rate for. For example: `--from=PLN`
  -a, --amount <AMOUNT>  Amount you would like to convert. For example: `--amount=7.52`
  -h, --help             Print help
  -V, --version          Print version

Tests

Unit tests run automatically during building a docker image. You can also run them locally using cargo test