Card Validation Service

This is a simple service that validates credit card numbers using the Luhn algorithm. It is an educational project that I created to learn more about the Go programming language and gin framework.

Running the service

To install the service, you need to have Go installed on your machine. You can download it from the official website.

Running in development mode

go run cmd/card-service/main.go

Running in production mode

go build -o card-service cmd/card-service/main.go
./card-service

Running in a container

docker build -t card-service .
docker run --name card-service -p 8080:8080 --env-file .env card-service

Endpoints

GET /ping

It returns a simple pong message.

Response

{
  "message": "pong"
}

POST /validate

It validates a credit card number using the Luhn algorithm.

Request

{
  "card_number": "4111111111111111"
}

Response

{
  "valid": true
}

Running tests

go test ./internal/...