package chain

import (
	"github.com/vapor/protocol/bc"
	"github.com/vapor/protocol/bc/types"
)

// Chain is the interface for Bytom core
type Chain interface {
	BestBlockHeader() *types.BlockHeader
	BestBlockHeight() uint64
	CalcNextSeed(*bc.Hash) (*bc.Hash, error)
	GetBlockByHash(*bc.Hash) (*types.Block, error)
	GetBlockByHeight(uint64) (*types.Block, error)
	GetHeaderByHash(*bc.Hash) (*types.BlockHeader, error)
	GetHeaderByHeight(uint64) (*types.BlockHeader, error)
	GetTransactionStatus(*bc.Hash) (*bc.TransactionStatus, error)
	InMainChain(bc.Hash) bool
	ProcessBlock(*types.Block) (bool, error)
	ValidateTx(*types.Tx) (bool, error)
}