package link

import (
	"fmt"
	"net/url"
)

func ValidateHTTPURL(value string) error {
	parsed, err := url.Parse(value)
	if err != nil {
		return fmt.Errorf("must be a valid URL")
	}
	if parsed.Scheme != "http" && parsed.Scheme != "https" {
		return fmt.Errorf("must use http or https")
	}
	if parsed.Host == "" {
		return fmt.Errorf("must include a host")
	}
	if parsed.RawQuery != "" {
		return fmt.Errorf("must not include a query string")
	}
	if parsed.Fragment != "" {
		return fmt.Errorf("must not include a fragment")
	}
	return nil
}