Graphql-API for currency conversion from crawler data 💰🔍👩🏽‍💻

Main dependencies

• crawler (for html crawler fetch)
• cheerio (for data extraction)
• currency.js (for currency conversion. *Used due simplicity. For production, there are better libs, like Dinero.js)
• https://exchangeratesapi.io API (to get EUR and USD tax conversion)

Development

Important: requires node >= 12.16

Running on localhost

with npm

npm install
npm run start

with yarn

yarn add all
yarn start

Browse playground at: http://localhost:8080/graphql

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Automatic tests

npm run test
or
yarn test

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Running with docker

docker build -t application/graphql-api:0.1 .
docker run -it -p 4000:8080 application/graphql-api:0.1

Browse playground at: http://0.0.0.0:4000/graphql

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Sample

{
  getTransferProPlan(sourceUrl: "https://www.smartmei.com.br") {
    datetime
    description
    BRL
    EUR
    USD
  }
}

IMPORTANT: The sourceurl will work only with https://www.smartmei.com.br address.

Improvements

• Create a fallback in case of currency external API downtime
• Send alerts to devops team in case of crawled target website changes