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
}
