Currency Converter Service

This skeleton provides an implementation of a REST service to perform currency conversions. You need to add the business logic for the conversion to work. These are the specs:

• The service must convert an amount from any currency to any other currency.
• You can find the definition and usage of the endpoint at http://localhost:8080/ or routes/index.ts.
• The data used for the conversion can be obtained from the getExchangeRates function.
• Every currency convertion transaction must be logged into a MongoDB database.
• Try to make your code as clear and efficient as possible.

Acceptance criteria

• All tests must pass.
• Parameters must be valid numbers or integers and currency codes must conform to ISO-4217 (3 letters, uppercase).

Setup

• Run yarn install or npm install.
• The app serves at localhost:8080 by default. You can change this in the config.
• The app expects the MongoDB instance to be located at localhost:27017 by default. You can change this in the config.
• You can use Docker Compose to start a local MongoDB instance ready to use.

Configuration

You can configure the default hostnames and ports with these environment variables, or editing the config/default.json file.

• api.port: Port to use to serve the API endpoints.
• mongodb.hostname: Hostname of the MongoDB instance.
• mongodb.port: Port of the MongoDB instance.
• mongodb.username: Username of the MongoDB instance.
• mongodb.password: Password of the MongoDB instance.