package business

import (
	"fmt"

	"www.thenautilus.net/cgit/go-example/config"
	"www.thenautilus.net/cgit/go-example/something"
)

type OverError struct {
	Value, Threshold int
}

func (e OverError) Error() string {
	return fmt.Sprintf("value %d is above threshold %d", e.Value, e.Threshold)
}

type Logic struct {
	somethingClient *something.Something
	threshold       int
}

func New(conf *config.BusinessLogicConfig, client *something.Something) Logic {
	return Logic{
		somethingClient: client,
		threshold:       conf.Threshold,
	}
}

func (bl *Logic) DoSomething() error {
	value, err := bl.somethingClient.FetchValue()
	if err != nil {
		return fmt.Errorf("failed to fetch value: %w", err)
	}

	if value > bl.threshold {
		fmt.Printf("OVER! %d > %d\n", value, bl.threshold)

		return OverError{value, bl.threshold}
	}

	fmt.Printf("all good")

	return nil
}