package imagedata

import (
	"net/http"

	"github.com/imgproxy/imgproxy/v3/ierrors"
	"github.com/imgproxy/imgproxy/v3/imagefetcher"
	"github.com/imgproxy/imgproxy/v3/transport"
)

var (
	Fetcher *imagefetcher.Fetcher

	// For tests. This needs to move to fetcher once we will have a way to isolate
	// the fetcher in tests.
	redirectAllRequestsTo string
)

type DownloadOptions struct {
	Header    http.Header
	CookieJar http.CookieJar
}

func initDownloading() error {
	ts, err := transport.NewTransport()
	if err != nil {
		return err
	}

	Fetcher, err = imagefetcher.NewFetcher(ts, imagefetcher.NewConfigFromEnv())
	if err != nil {
		return ierrors.Wrap(err, 0, ierrors.WithPrefix("can't create image fetcher"))
	}

	return nil
}

func RedirectAllRequestsTo(u string) {
	redirectAllRequestsTo = u
}

func StopRedirectingRequests() {
	redirectAllRequestsTo = ""
}