// Copyright 2017 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 ethconfig contains the configuration of the ETH and LES protocols.
package ethconfig

import (
	"time"

	"github.com/XinFinOrg/XDPoSChain/core"
	"github.com/XinFinOrg/XDPoSChain/core/txpool/legacypool"
	"github.com/XinFinOrg/XDPoSChain/eth/downloader"
	"github.com/XinFinOrg/XDPoSChain/eth/gasprice"
	"github.com/XinFinOrg/XDPoSChain/miner"
)

// FullNodeGPO contains default gasprice oracle settings for full node.
var FullNodeGPO = gasprice.Config{
	Blocks:           20,
	Percentile:       60,
	MaxHeaderHistory: 1024,
	MaxBlockHistory:  1024,
	MaxPrice:         gasprice.DefaultMaxPrice,
	IgnorePrice:      gasprice.DefaultIgnorePrice,
}

// Defaults contains default settings for use on the Ethereum main net.
var Defaults = Config{
	SyncMode:           downloader.FullSync,
	NetworkId:          0, // enable auto configuration of networkID == chainID
	LightPeers:         100,
	DatabaseCache:      768,
	TrieCleanCache:     256,
	TrieDirtyCache:     256,
	TrieTimeout:        5 * time.Minute,
	FilterLogCacheSize: 32,
	Miner:              miner.DefaultConfig,
	LogQueryLimit:      1000,
	TxPool:             legacypool.DefaultConfig,
	RPCGasCap:          50000000,
	RPCEVMTimeout:      5 * time.Second,
	GPO:                FullNodeGPO,
	RPCTxFeeCap:        1, // 1 ether
	RangeLimit:         5000,
}

//go:generate go run github.com/fjl/gencodec -type Config -formats toml -out gen_config.go

// Config contains configuration options for of the ETH and LES protocols.
type Config struct {
	// The genesis block, which is inserted if the database is empty.
	// If nil, the Ethereum main net block is used.
	Genesis *core.Genesis `toml:",omitempty"`

	// Network ID separates blockchains on the peer-to-peer networking level. When left
	// zero, the chain ID is used as network ID.
	NetworkId uint64
	SyncMode  downloader.SyncMode

	NoPruning bool // Whether to disable pruning and flush everything to disk
	Prefetch  bool // Whether to enable prefetching and only load state on demand

	// Light client options
	LightServ  int `toml:",omitempty"` // Maximum percentage of time allowed for serving LES requests
	LightPeers int `toml:",omitempty"` // Maximum number of LES client peers

	// Database options
	SkipBcVersionCheck bool `toml:"-"`
	DeleteAllBadBlocks bool `toml:"-"`
	DatabaseHandles    int  `toml:"-"`
	DatabaseCache      int
	TrieCleanCache     int
	TrieDirtyCache     int
	TrieTimeout        time.Duration
	Preimages          bool

	// This is the number of blocks for which logs will be cached in the filter system.
	FilterLogCacheSize int

	// Mining options
	Miner miner.Config

	// This is the maximum number of addresses or topics allowed in filter criteria
	// for eth_getLogs.
	LogQueryLimit int

	// Transaction pool options
	TxPool legacypool.Config

	// Gas Price Oracle options
	GPO gasprice.Config

	// Enables tracking of SHA3 preimages in the VM
	EnablePreimageRecording bool

	// Enables VM tracing
	VMTrace           string
	VMTraceJsonConfig string

	// RPCGasCap is the global gas cap for eth-call variants.
	RPCGasCap uint64

	// RPCEVMTimeout is the global timeout for eth-call.
	RPCEVMTimeout time.Duration

	// RPCTxFeeCap is the global transaction fee(price * gaslimit) cap for
	// send-transction variants. The unit is ether.
	RPCTxFeeCap float64

	// RangeLimit restricts the maximum range (end - start) for range queries.
	RangeLimit uint64 `toml:",omitempty"`
}