package domainproviderimp

import (
	"net/url"

	"git.sendico.io/tech/sxchnge/shared/errors"
	"git.sendico.io/tech/sxchnge/shared/logging"
	"go.uber.org/zap"
)

type DomainProviderImp struct {
	domain      string
	apiEndpoint string
}

func (dp *DomainProviderImp) GetFullLink(linkElem ...string) (string, error) {
	return url.JoinPath(dp.domain, linkElem...)
}

func (dp *DomainProviderImp) GetAPILink(linkElem ...string) (string, error) {
	return url.JoinPath(dp.apiEndpoint, linkElem...)
}

func CreateDomainProviderImp(logger mlogger.Logger, domain, protocol, apiPath string) (*DomainProviderImp, error) {
	if protocol != "http" && protocol != "https" {
		return nil, merrors.InvalidArgument("API protocol must be http or https")
	}
	parsed, err := url.Parse(protocol + "://" + domain)
	if err != nil {
		return nil, merrors.OpaqueWrap(merrors.ErrInvalidArg, err, "invalid API origin")
	}
	if parsed.Hostname() == "" || parsed.Host != domain || parsed.User != nil || parsed.Path != "" || parsed.RawQuery != "" || parsed.Fragment != "" {
		return nil, merrors.InvalidArgument("API domain must be a host with optional port")
	}
	p := new(DomainProviderImp)
	p.domain = protocol + "://" + domain
	if p.apiEndpoint, err = url.JoinPath(p.domain, apiPath); err != nil {
		logger.Error("Failed to create domain provider", zap.String("domain", p.domain), zap.String("api_path", apiPath))
		return nil, err
	}
	logger.Named("domain_provider").Info("Domain name provider is up", zap.String("domain", p.domain))
	return p, nil
}