Currency Conversion Extension for ScaffoldETH2

1. Visit ExchangeRate-API to get a free API key.

2. In terminal, use the below snippet to bootstrap a new ScaffoldEth project with the currency-conversion-extension

npx create-eth@latest -e rafaelcaso/currency-conversion-extension

You will be prompted for a project name and a choice of Hardhat or Foundry

3. After you've initialized your project cd your-project-name and install packages using yarn install

4. Open the project in your editor of choice and navigate to

|-- packages
|   |-- nextjs

and locate the file called .env.example

rename this to simply .env

Add your API key to the .env file using the exact variable name NEXT_PUBLIC_CURRENCY_API_KEY

NEXT_PUBLIC_CURRENCY_API_KEY="replaceWithAPIKey"

Enter these commands in three different terminals

yarn chain
yarn deploy
yarn start

That's it! You can now open a web browser and go to localhost:3000 and see the project. In the header you will find the 'Currency' tab which has a simple input to easily convert between over 150 currencies

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PLEASE NOTE - ExchangeRate-API provides a free key for once-daily conversion rates. To gain access to more frequent updates, you will need to purchase a pro membership.

The Currency Conversion Extension is designed to only call the API when there are updated rates available and cache results to prevent redundant API calls.