// Copyright 2018 The dexon-consensus-core Authors
// This file is part of the dexon-consensus-core library.
//
// The dexon-consensus-core library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus-core library is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus-core library. If not, see
// <http://www.gnu.org/licenses/>.

package dex

import (
	"github.com/dexon-foundation/dexon-consensus-core/core/types"

	"github.com/dexon-foundation/dexon/core"
)

// DexconApp implementes the DEXON consensus core application interface.
type DexconApp struct {
	txPool *core.TxPool
}

func NewDexconApp(txPool *core.TxPool) *DexconApp {
	return &DexconApp{
		txPool: txPool,
	}
}

// PreparePayload is called when consensus core is preparing a block.
func (d *DexconApp) PreparePayload(position types.Position) []byte {
	return nil
}

// PrepareWitness will return the witness data no lower than consensusHeight.
func (d *DexconApp) PrepareWitness(consensusHeight uint64) types.Witness {
	return types.Witness{}
}

// VerifyPayload verifies if the payloads are valid.
func (d *DexconApp) VerifyBlock(block *types.Block) bool {
	return true
}

// BlockDelivered is called when a block is add to the compaction chain.
func (d *DexconApp) BlockDelivered(block types.Block) {
}