package consensus

import (
	"crypto"
	"time"

	"source.quilibrium.com/quilibrium/monorepo/node/config"
	"source.quilibrium.com/quilibrium/monorepo/node/execution"
	"source.quilibrium.com/quilibrium/monorepo/node/keys"
	"source.quilibrium.com/quilibrium/monorepo/node/protobufs"
)

type EngineState int

const (
	EngineStateStopped EngineState = iota
	EngineStateStarting
	EngineStateLoading
	EngineStateCollecting
	EngineStateProving
	EngineStatePublishing
	EngineStateVerifying
	EngineStateStopping
)

type ConsensusEngine interface {
	Start() <-chan error
	Stop(force bool) <-chan error
	RegisterExecutor(exec execution.ExecutionEngine, frame uint64) <-chan error
	UnregisterExecutor(name string, frame uint64, force bool) <-chan error
	GetFrame() uint64
	GetDifficulty() uint32
	GetState() EngineState
	GetFrameChannel() <-chan uint64
}

type DataConsensusEngine interface {
	Start(filter []byte, seed []byte) <-chan error
	Stop(force bool) <-chan error
	RegisterExecutor(exec execution.ExecutionEngine, frame uint64) <-chan error
	UnregisterExecutor(name string, frame uint64, force bool) <-chan error
	GetFrame() uint64
	GetDifficulty() uint32
	GetState() EngineState
	GetFrameChannel() <-chan *protobufs.ClockFrame
	GetActiveFrame() *protobufs.ClockFrame
	GetProvingKey(
		engineConfig *config.EngineConfig,
	) (crypto.Signer, keys.KeyType, []byte, []byte)
	IsInProverTrie(key []byte) bool
	GetPeerInfo() *protobufs.PeerInfoResponse
}

func GetMinimumVersionCutoff() time.Time {
	return time.Date(2023, time.November, 3, 0, 0, 0, 0, time.UTC)
}

func GetMinimumVersion() []byte {
	return []byte{0x01, 0x01, 0x05}
}

func GetVersion() []byte {
	return []byte{0x01, 0x01, 0x06}
}