package params

import (
	"time"

	"github.com/prysmaticlabs/prysm/shared/bytesutil"
)

// MainnetConfig returns the configuration to be used in the main network.
func MainnetConfig() *BeaconChainConfig {
	return mainnetBeaconConfig
}

// UseMainnetConfig for beacon chain services.
func UseMainnetConfig() {
	beaconConfig = MainnetConfig()
}

var mainnetNetworkConfig = &NetworkConfig{
	GossipMaxSize:                   1 << 20, // 1 MiB
	MaxChunkSize:                    1 << 20, // 1 MiB
	AttestationSubnetCount:          64,
	AttestationPropagationSlotRange: 32,
	MaxRequestBlocks:                1 << 10, // 1024
	TtfbTimeout:                     5 * time.Second,
	RespTimeout:                     10 * time.Second,
	MaximumGossipClockDisparity:     500 * time.Millisecond,
	MessageDomainInvalidSnappy:      [4]byte{00, 00, 00, 00},
	MessageDomainValidSnappy:        [4]byte{01, 00, 00, 00},
	ETH2Key:                         "eth2",
	AttSubnetKey:                    "attnets",
	MinimumPeersInSubnet:            4,
	MinimumPeersInSubnetSearch:      20,
	ContractDeploymentBlock:         11184524, // Note: contract was deployed in block 11052984 but no transactions were sent until 11184524.
	BootstrapNodes: []string{
		// Teku team's bootnode
		"enr:-KG4QOtcP9X1FbIMOe17QNMKqDxCpm14jcX5tiOE4_TyMrFqbmhPZHK_ZPG2Gxb1GE2xdtodOfx9-cgvNtxnRyHEmC0ghGV0aDKQ9aX9QgAAAAD__________4JpZIJ2NIJpcIQDE8KdiXNlY3AyNTZrMaEDhpehBDbZjM_L9ek699Y7vhUJ-eAdMyQW_Fil522Y0fODdGNwgiMog3VkcIIjKA",
		"enr:-KG4QDyytgmE4f7AnvW-ZaUOIi9i79qX4JwjRAiXBZCU65wOfBu-3Nb5I7b_Rmg3KCOcZM_C3y5pg7EBU5XGrcLTduQEhGV0aDKQ9aX9QgAAAAD__________4JpZIJ2NIJpcIQ2_DUbiXNlY3AyNTZrMaEDKnz_-ps3UUOfHWVYaskI5kWYO_vtYMGYCQRAR3gHDouDdGNwgiMog3VkcIIjKA",
		// Prylab team's bootnodes
		"enr:-Ku4QImhMc1z8yCiNJ1TyUxdcfNucje3BGwEHzodEZUan8PherEo4sF7pPHPSIB1NNuSg5fZy7qFsjmUKs2ea1Whi0EBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpD1pf1CAAAAAP__________gmlkgnY0gmlwhBLf22SJc2VjcDI1NmsxoQOVphkDqal4QzPMksc5wnpuC3gvSC8AfbFOnZY_On34wIN1ZHCCIyg",
		"enr:-Ku4QP2xDnEtUXIjzJ_DhlCRN9SN99RYQPJL92TMlSv7U5C1YnYLjwOQHgZIUXw6c-BvRg2Yc2QsZxxoS_pPRVe0yK8Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpD1pf1CAAAAAP__________gmlkgnY0gmlwhBLf22SJc2VjcDI1NmsxoQMeFF5GrS7UZpAH2Ly84aLK-TyvH-dRo0JM1i8yygH50YN1ZHCCJxA",
		"enr:-Ku4QPp9z1W4tAO8Ber_NQierYaOStqhDqQdOPY3bB3jDgkjcbk6YrEnVYIiCBbTxuar3CzS528d2iE7TdJsrL-dEKoBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpD1pf1CAAAAAP__________gmlkgnY0gmlwhBLf22SJc2VjcDI1NmsxoQMw5fqqkw2hHC4F5HZZDPsNmPdB1Gi8JPQK7pRc9XHh-oN1ZHCCKvg",
		// Lighthouse team's bootnodes
		"enr:-IS4QLkKqDMy_ExrpOEWa59NiClemOnor-krjp4qoeZwIw2QduPC-q7Kz4u1IOWf3DDbdxqQIgC4fejavBOuUPy-HE4BgmlkgnY0gmlwhCLzAHqJc2VjcDI1NmsxoQLQSJfEAHZApkm5edTCZ_4qps_1k_ub2CxHFxi-gr2JMIN1ZHCCIyg",
		"enr:-IS4QDAyibHCzYZmIYZCjXwU9BqpotWmv2BsFlIq1V31BwDDMJPFEbox1ijT5c2Ou3kvieOKejxuaCqIcjxBjJ_3j_cBgmlkgnY0gmlwhAMaHiCJc2VjcDI1NmsxoQJIdpj_foZ02MXz4It8xKD7yUHTBx7lVFn3oeRP21KRV4N1ZHCCIyg",
		// EF bootnodes
		"enr:-Ku4QHqVeJ8PPICcWk1vSn_XcSkjOkNiTg6Fmii5j6vUQgvzMc9L1goFnLKgXqBJspJjIsB91LTOleFmyWWrFVATGngBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhAMRHkWJc2VjcDI1NmsxoQKLVXFOhp2uX6jeT0DvvDpPcU8FWMjQdR4wMuORMhpX24N1ZHCCIyg",
		"enr:-Ku4QG-2_Md3sZIAUebGYT6g0SMskIml77l6yR-M_JXc-UdNHCmHQeOiMLbylPejyJsdAPsTHJyjJB2sYGDLe0dn8uYBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhBLY-NyJc2VjcDI1NmsxoQORcM6e19T1T9gi7jxEZjk_sjVLGFscUNqAY9obgZaxbIN1ZHCCIyg",
		"enr:-Ku4QPn5eVhcoF1opaFEvg1b6JNFD2rqVkHQ8HApOKK61OIcIXD127bKWgAtbwI7pnxx6cDyk_nI88TrZKQaGMZj0q0Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhDayLMaJc2VjcDI1NmsxoQK2sBOLGcUb4AwuYzFuAVCaNHA-dy24UuEKkeFNgCVCsIN1ZHCCIyg",
		"enr:-Ku4QEWzdnVtXc2Q0ZVigfCGggOVB2Vc1ZCPEc6j21NIFLODSJbvNaef1g4PxhPwl_3kax86YPheFUSLXPRs98vvYsoBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpC1MD8qAAAAAP__________gmlkgnY0gmlwhDZBrP2Jc2VjcDI1NmsxoQM6jr8Rb1ktLEsVcKAPa08wCsKUmvoQ8khiOl_SLozf9IN1ZHCCIyg",
	},
}

var mainnetBeaconConfig = &BeaconChainConfig{
	// Constants (Non-configurable)
	FarFutureEpoch:           1<<64 - 1,
	BaseRewardsPerEpoch:      4,
	DepositContractTreeDepth: 32,
	GenesisDelay:             604800, // 1 week.

	// Misc constant.
	TargetCommitteeSize:            128,
	MaxValidatorsPerCommittee:      2048,
	MaxCommitteesPerSlot:           64,
	MinPerEpochChurnLimit:          4,
	ChurnLimitQuotient:             1 << 16,
	ShuffleRoundCount:              90,
	MinGenesisActiveValidatorCount: 16384,
	MinGenesisTime:                 1606824000, // Dec 1, 2020, 12pm UTC.
	TargetAggregatorsPerCommittee:  16,
	HysteresisQuotient:             4,
	HysteresisDownwardMultiplier:   1,
	HysteresisUpwardMultiplier:     5,

	// Gwei value constants.
	MinDepositAmount:          1 * 1e9,
	MaxEffectiveBalance:       32 * 1e9,
	EjectionBalance:           16 * 1e9,
	EffectiveBalanceIncrement: 1 * 1e9,

	// Initial value constants.
	BLSWithdrawalPrefixByte: byte(0),
	ZeroHash:                [32]byte{},

	// Time parameter constants.
	MinAttestationInclusionDelay:     1,
	SecondsPerSlot:                   12,
	SlotsPerEpoch:                    32,
	MinSeedLookahead:                 1,
	MaxSeedLookahead:                 4,
	EpochsPerEth1VotingPeriod:        64,
	SlotsPerHistoricalRoot:           8192,
	MinValidatorWithdrawabilityDelay: 256,
	ShardCommitteePeriod:             256,
	MinEpochsToInactivityPenalty:     4,
	Eth1FollowDistance:               2048,
	SafeSlotsToUpdateJustified:       8,

	// Ethereum PoW parameters.
	DepositChainID:         1, // Chain ID of eth1 mainnet.
	DepositNetworkID:       1, // Network ID of eth1 mainnet.
	DepositContractAddress: "0x00000000219ab540356cBB839Cbe05303d7705Fa",

	// Validator params.
	RandomSubnetsPerValidator:         1 << 0,
	EpochsPerRandomSubnetSubscription: 1 << 8,

	// While eth1 mainnet block times are closer to 13s, we must conform with other clients in
	// order to vote on the correct eth1 blocks.
	//
	// Additional context: https://github.com/ethereum/eth2.0-specs/issues/2132
	// Bug prompting this change: https://github.com/prysmaticlabs/prysm/issues/7856
	// Future optimization: https://github.com/prysmaticlabs/prysm/issues/7739
	SecondsPerETH1Block: 14,

	// State list length constants.
	EpochsPerHistoricalVector: 65536,
	EpochsPerSlashingsVector:  8192,
	HistoricalRootsLimit:      16777216,
	ValidatorRegistryLimit:    1099511627776,

	// Reward and penalty quotients constants.
	BaseRewardFactor:               64,
	WhistleBlowerRewardQuotient:    512,
	ProposerRewardQuotient:         8,
	InactivityPenaltyQuotient:      67108864,
	MinSlashingPenaltyQuotient:     128,
	ProportionalSlashingMultiplier: 1,

	// Max operations per block constants.
	MaxProposerSlashings: 16,
	MaxAttesterSlashings: 2,
	MaxAttestations:      128,
	MaxDeposits:          16,
	MaxVoluntaryExits:    16,

	// BLS domain values.
	DomainBeaconProposer:    bytesutil.ToBytes4(bytesutil.Bytes4(0)),
	DomainBeaconAttester:    bytesutil.ToBytes4(bytesutil.Bytes4(1)),
	DomainRandao:            bytesutil.ToBytes4(bytesutil.Bytes4(2)),
	DomainDeposit:           bytesutil.ToBytes4(bytesutil.Bytes4(3)),
	DomainVoluntaryExit:     bytesutil.ToBytes4(bytesutil.Bytes4(4)),
	DomainSelectionProof:    bytesutil.ToBytes4(bytesutil.Bytes4(5)),
	DomainAggregateAndProof: bytesutil.ToBytes4(bytesutil.Bytes4(6)),

	// Prysm constants.
	GweiPerEth:                1000000000,
	BLSSecretKeyLength:        32,
	BLSPubkeyLength:           48,
	BLSSignatureLength:        96,
	DefaultBufferSize:         10000,
	WithdrawalPrivkeyFileName: "/shardwithdrawalkey",
	ValidatorPrivkeyFileName:  "/validatorprivatekey",
	RPCSyncCheck:              1,
	EmptySignature:            [96]byte{},
	DefaultPageSize:           250,
	MaxPeersToSync:            15,
	SlotsPerArchivedPoint:     2048,
	GenesisCountdownInterval:  time.Minute,
	ConfigName:                ConfigNames[Mainnet],
	BeaconStateFieldCount:     21,

	// Slasher related values.
	WeakSubjectivityPeriod:    54000,
	PruneSlasherStoragePeriod: 10,

	// Weak subjectivity values.
	SafetyDecay: 10,

	// Fork related values.
	GenesisForkVersion:  []byte{0, 0, 0, 0},
	NextForkVersion:     []byte{0, 0, 0, 0}, // Set to GenesisForkVersion unless there is a scheduled fork
	NextForkEpoch:       1<<64 - 1,          // Set to FarFutureEpoch unless there is a scheduled fork.
	ForkVersionSchedule: map[uint64][]byte{
		// Any further forks must be specified here by their epoch number.
	},
}