// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum 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 go-ethereum 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package core

import (
	"errors"

	"github.com/ethereum/go-ethereum/core/types"
)

var (
	// ErrKnownBlock is returned when a block to import is already known locally.
	ErrKnownBlock = errors.New("block already known")

	// ErrBlacklistedHash is returned if a block to import is on the blacklist.
	ErrBlacklistedHash = errors.New("blacklisted hash")

	// ErrNoGenesis is returned when there is no Genesis Block.
	ErrNoGenesis = errors.New("genesis not found in chain")
)

// List of evm-call-message pre-checking errors. All state transition messages will
// be pre-checked before execution. If any invalidation detected, the corresponding
// error should be returned which is defined here.
//
// - If the pre-checking happens in the miner, then the transaction won't be packed.
// - If the pre-checking happens in the block processing procedure, then a "BAD BLOCk"
// error should be emitted.
var (
	// ErrNonceTooLow is returned if the nonce of a transaction is lower than the
	// one present in the local chain.
	ErrNonceTooLow = errors.New("nonce too low")

	// ErrNonceTooHigh is returned if the nonce of a transaction is higher than the
	// next one expected based on the local chain.
	ErrNonceTooHigh = errors.New("nonce too high")

	// ErrGasLimitReached is returned by the gas pool if the amount of gas required
	// by a transaction is higher than what's left in the block.
	ErrGasLimitReached = errors.New("gas limit reached")

	// ErrInsufficientFundsForTransfer is returned if the transaction sender doesn't
	// have enough funds for transfer(topmost call only).
	ErrInsufficientFundsForTransfer = errors.New("insufficient funds for transfer")

	// ErrInsufficientFunds is returned if the total cost of executing a transaction
	// is higher than the balance of the user's account.
	ErrInsufficientFunds = errors.New("insufficient funds for gas * price + value")

	// ErrGasUintOverflow is returned when calculating gas usage.
	ErrGasUintOverflow = errors.New("gas uint64 overflow")

	// ErrIntrinsicGas is returned if the transaction is specified to use less gas
	// than required to start the invocation.
	ErrIntrinsicGas = errors.New("intrinsic gas too low")

	// ErrTxTypeNotSupported is returned if a transaction is not supported in the
	// current network configuration.
	ErrTxTypeNotSupported = types.ErrTxTypeNotSupported

	// Quorum
	// ErrAbortBlocksProcessing is returned if bc.insertChain is interrupted under raft mode
	ErrAbortBlocksProcessing = errors.New("abort during blocks processing")

	// ErrContractManagedPartiesCheckFailed is returned if managed parties check has failed for contract
	ErrContractManagedPartiesCheckFailed = errors.New("managed parties check has failed for contract")

	// ErrPrivacyMetadataInvalidMerkleRoot is returned if there is an empty MR during the pmh.prepare(...)
	ErrPrivacyMetadataInvalidMerkleRoot = errors.New("privacy metadata has empty MR for stateValidation flag")

	// ErrPrivacyEnhancedReceivedWhenDisabled is returned if privacy enhanced transaction received while privacy enhancements are disabled
	ErrPrivacyEnhancedReceivedWhenDisabled = errors.New("privacy metadata has empty MR for stateValidation flag")

	// ErrPrivateContractInteractionVerificationFailed is returned if the verification of contract interaction differs from the one returned by Tessera (check pmh.verify(...))
	ErrPrivateContractInteractionVerificationFailed = errors.New("verification of contract interaction differs from the one returned by Tessera")
	// End Quorum
)
