package gateway

import (
	"errors"

	protocol "git.sechmachine.io.vn/sechmachine/VerseVDI-Protocol/gen/go/protocol"
)

var ErrNoCapabilityOverlap = errors.New("no capability overlap")

func DefaultCapabilities() protocol.CapabilityProfile {
	return protocol.CapabilityProfile{
		Transport:         "quic-tls13",
		Framing:           "datagram-v2",
		Media:             "encoded",
		Audio:             "encoded",
		SourceRateControl: "server",
		ClientDecode:      []string{"hevc-opus", "h264-opus"},
	}
}

func capabilityProfileUnset(profile protocol.CapabilityProfile) bool {
	return profile.Transport == "" && profile.Framing == "" && profile.Media == "" &&
		profile.Audio == "" && profile.SourceRateControl == "" && len(profile.ClientDecode) == 0
}

func IntersectCapabilities(profiles ...protocol.CapabilityProfile) (protocol.CapabilityProfile, error) {
	selected, err := protocol.IntersectCapabilityProfiles(profiles...)
	if err != nil {
		return protocol.CapabilityProfile{}, ErrNoCapabilityOverlap
	}
	return selected, nil
}