package dms3p2p

import (
	"fmt"

	quic "github.com/lucas-clemente/quic-go"
	config "gitlab.dms3.io/dms3/go-dms3-config"
	p2p "gitlab.dms3.io/p2p/go-p2p"
	metrics "gitlab.dms3.io/p2p/go-p2p-core/metrics"
	p2pquic "gitlab.dms3.io/p2p/go-p2p-quic-transport"
	tcp "gitlab.dms3.io/p2p/go-tcp-transport"
	websocket "gitlab.dms3.io/p2p/go-ws-transport"

	"go.uber.org/fx"
)

// See https://gitlab.dms3.io/dms3/go-dms3/issues/7526 and
// https://github.com/lucas-clemente/quic-go/releases/tag/v0.17.3.
// TODO: remove this once the network has upgraded to > v0.6.0.
func init() {
	quic.RetireBugBackwardsCompatibilityMode = true
}

func Transports(tptConfig config.Transports) interface{} {
	return func(pnet struct {
		fx.In
		Fprint PNetFingerprint `optional:"true"`
	}) (opts P2pOpts, err error) {
		privateNetworkEnabled := pnet.Fprint != nil

		if tptConfig.Network.TCP.WithDefault(true) {
			opts.Opts = append(opts.Opts, p2p.Transport(tcp.NewTCPTransport))
		}

		if tptConfig.Network.Websocket.WithDefault(true) {
			opts.Opts = append(opts.Opts, p2p.Transport(websocket.New))
		}

		if tptConfig.Network.QUIC.WithDefault(!privateNetworkEnabled) {
			if privateNetworkEnabled {
				// QUIC was force enabled while the private network was turned on.
				// Fail and tell the user.
				return opts, fmt.Errorf(
					"The QUIC transport does not support private networks. " +
						"Please disable Swarm.Transports.Network.QUIC.",
				)
			}
			opts.Opts = append(opts.Opts, p2p.Transport(p2pquic.NewTransport))
		}

		return opts, nil
	}
}

func BandwidthCounter() (opts P2pOpts, reporter *metrics.BandwidthCounter) {
	reporter = metrics.NewBandwidthCounter()
	opts.Opts = append(opts.Opts, p2p.BandwidthReporter(reporter))
	return opts, reporter
}