package params

import (
	"testing"

	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
	"github.com/prysmaticlabs/prysm/v5/testing/require"
)

func TestConfigset_Add(t *testing.T) {
	r := newConfigset()
	name := "devnet"
	cfg := testConfig(name)
	require.NoError(t, r.add(cfg))
	c, err := r.byName(name)
	require.NoError(t, err)
	compareConfigs(t, cfg, c)
	require.ErrorIs(t, r.add(cfg), errCollisionName)
	cfg.ConfigName = "test"
	require.ErrorIs(t, r.add(cfg), errCollisionFork)
}

func TestConfigsetReplaceMainnet(t *testing.T) {
	r := newConfigset()
	mainnet := MainnetConfig().Copy()
	require.NoError(t, r.setActive(mainnet))
	FillTestVersions(mainnet, 128)
	require.NoError(t, r.replace(mainnet))
}

func TestConfigset_Replace(t *testing.T) {
	r := newConfigset()
	mainnet := MainnetConfig().Copy()
	require.NoError(t, r.add(mainnet))
	require.NoError(t, r.setActive(mainnet))
	require.ErrorIs(t, r.add(mainnet), errCollisionName)
	c, err := r.byName(MainnetName)
	require.NoError(t, err)
	fail := c.Copy()
	fail.ConfigName = "test"
	require.ErrorIs(t, r.replace(fail), errCollisionFork)

	o := c.Copy()
	FillTestVersions(o, 128)
	o.ConfigName = MainnetName
	require.NoError(t, r.replace(o))
	// mainnet is replaced, we shouldn't be able to find its fork version anymore
	_, err = r.byVersion(bytesutil.ToBytes4(mainnet.GenesisForkVersion))
	require.ErrorIs(t, err, errConfigNotFound)
	undo := o.Copy()
	FillTestVersions(undo, 127)
	undoFunc, err := r.replaceWithUndo(undo)
	require.NoError(t, err)
	u, err := r.byName(undo.ConfigName)
	require.NoError(t, err)
	require.Equal(t, undo, u)
	u, err = r.byVersion(bytesutil.ToBytes4(undo.GenesisForkVersion))
	require.NoError(t, err)
	require.Equal(t, undo, u)
	_, err = r.byVersion(bytesutil.ToBytes4(o.GenesisForkVersion))
	require.ErrorIs(t, err, errConfigNotFound)
	require.NoError(t, undoFunc())
	// replaced config restored by undoFunc, lookup should now succeed
	_, err = r.byVersion(bytesutil.ToBytes4(o.GenesisForkVersion))
	require.NoError(t, err)
}

func testConfig(name string) *BeaconChainConfig {
	c := MainnetConfig().Copy()
	FillTestVersions(c, 127)
	c.ConfigName = name
	return c
}

func compareConfigs(t *testing.T, expected, actual *BeaconChainConfig) {
	require.DeepEqual(t, expected.GenesisEpoch, actual.GenesisEpoch)
	require.DeepEqual(t, expected.FarFutureEpoch, actual.FarFutureEpoch)
	require.DeepEqual(t, expected.FarFutureSlot, actual.FarFutureSlot)
	require.DeepEqual(t, expected.BaseRewardsPerEpoch, actual.BaseRewardsPerEpoch)
	require.DeepEqual(t, expected.DepositContractTreeDepth, actual.DepositContractTreeDepth)
	require.DeepEqual(t, expected.JustificationBitsLength, actual.JustificationBitsLength)
	require.DeepEqual(t, expected.PresetBase, actual.PresetBase)
	require.DeepEqual(t, expected.ConfigName, actual.ConfigName)
	require.DeepEqual(t, expected.TargetCommitteeSize, actual.TargetCommitteeSize)
	require.DeepEqual(t, expected.MaxValidatorsPerCommittee, actual.MaxValidatorsPerCommittee)
	require.DeepEqual(t, expected.MaxCommitteesPerSlot, actual.MaxCommitteesPerSlot)
	require.DeepEqual(t, expected.MinPerEpochChurnLimit, actual.MinPerEpochChurnLimit)
	require.DeepEqual(t, expected.ChurnLimitQuotient, actual.ChurnLimitQuotient)
	require.DeepEqual(t, expected.ShuffleRoundCount, actual.ShuffleRoundCount)
	require.DeepEqual(t, expected.MinGenesisActiveValidatorCount, actual.MinGenesisActiveValidatorCount)
	require.DeepEqual(t, expected.MinGenesisTime, actual.MinGenesisTime)
	require.DeepEqual(t, expected.TargetAggregatorsPerCommittee, actual.TargetAggregatorsPerCommittee)
	require.DeepEqual(t, expected.HysteresisQuotient, actual.HysteresisQuotient)
	require.DeepEqual(t, expected.HysteresisDownwardMultiplier, actual.HysteresisDownwardMultiplier)
	require.DeepEqual(t, expected.HysteresisUpwardMultiplier, actual.HysteresisUpwardMultiplier)
	require.DeepEqual(t, expected.MinDepositAmount, actual.MinDepositAmount)
	require.DeepEqual(t, expected.MaxEffectiveBalance, actual.MaxEffectiveBalance)
	require.DeepEqual(t, expected.EjectionBalance, actual.EjectionBalance)
	require.DeepEqual(t, expected.EffectiveBalanceIncrement, actual.EffectiveBalanceIncrement)
	require.DeepEqual(t, expected.BLSWithdrawalPrefixByte, actual.BLSWithdrawalPrefixByte)
	require.DeepEqual(t, expected.ZeroHash, actual.ZeroHash)
	require.DeepEqual(t, expected.GenesisDelay, actual.GenesisDelay)
	require.DeepEqual(t, expected.MinAttestationInclusionDelay, actual.MinAttestationInclusionDelay)
	require.DeepEqual(t, expected.SecondsPerSlot, actual.SecondsPerSlot)
	require.DeepEqual(t, expected.SlotsPerEpoch, actual.SlotsPerEpoch)
	require.DeepEqual(t, expected.SqrRootSlotsPerEpoch, actual.SqrRootSlotsPerEpoch)
	require.DeepEqual(t, expected.MinSeedLookahead, actual.MinSeedLookahead)
	require.DeepEqual(t, expected.MaxSeedLookahead, actual.MaxSeedLookahead)
	require.DeepEqual(t, expected.EpochsPerEth1VotingPeriod, actual.EpochsPerEth1VotingPeriod)
	require.DeepEqual(t, expected.SlotsPerHistoricalRoot, actual.SlotsPerHistoricalRoot)
	require.DeepEqual(t, expected.MinValidatorWithdrawabilityDelay, actual.MinValidatorWithdrawabilityDelay)
	require.DeepEqual(t, expected.ShardCommitteePeriod, actual.ShardCommitteePeriod)
	require.DeepEqual(t, expected.MinEpochsToInactivityPenalty, actual.MinEpochsToInactivityPenalty)
	require.DeepEqual(t, expected.Eth1FollowDistance, actual.Eth1FollowDistance)
	require.DeepEqual(t, expected.SecondsPerETH1Block, actual.SecondsPerETH1Block)
	require.DeepEqual(t, expected.ProposerScoreBoost, actual.ProposerScoreBoost)
	require.DeepEqual(t, expected.IntervalsPerSlot, actual.IntervalsPerSlot)
	require.DeepEqual(t, expected.DepositChainID, actual.DepositChainID)
	require.DeepEqual(t, expected.DepositNetworkID, actual.DepositNetworkID)
	require.DeepEqual(t, expected.DepositContractAddress, actual.DepositContractAddress)
	require.DeepEqual(t, expected.RandomSubnetsPerValidator, actual.RandomSubnetsPerValidator)
	require.DeepEqual(t, expected.EpochsPerRandomSubnetSubscription, actual.EpochsPerRandomSubnetSubscription)
	require.DeepEqual(t, expected.EpochsPerHistoricalVector, actual.EpochsPerHistoricalVector)
	require.DeepEqual(t, expected.EpochsPerSlashingsVector, actual.EpochsPerSlashingsVector)
	require.DeepEqual(t, expected.HistoricalRootsLimit, actual.HistoricalRootsLimit)
	require.DeepEqual(t, expected.ValidatorRegistryLimit, actual.ValidatorRegistryLimit)
	require.DeepEqual(t, expected.BaseRewardFactor, actual.BaseRewardFactor)
	require.DeepEqual(t, expected.WhistleBlowerRewardQuotient, actual.WhistleBlowerRewardQuotient)
	require.DeepEqual(t, expected.ProposerRewardQuotient, actual.ProposerRewardQuotient)
	require.DeepEqual(t, expected.InactivityPenaltyQuotient, actual.InactivityPenaltyQuotient)
	require.DeepEqual(t, expected.MinSlashingPenaltyQuotient, actual.MinSlashingPenaltyQuotient)
	require.DeepEqual(t, expected.ProportionalSlashingMultiplier, actual.ProportionalSlashingMultiplier)
	require.DeepEqual(t, expected.MaxProposerSlashings, actual.MaxProposerSlashings)
	require.DeepEqual(t, expected.MaxAttesterSlashings, actual.MaxAttesterSlashings)
	require.DeepEqual(t, expected.MaxAttestations, actual.MaxAttestations)
	require.DeepEqual(t, expected.MaxDeposits, actual.MaxDeposits)
	require.DeepEqual(t, expected.MaxVoluntaryExits, actual.MaxVoluntaryExits)
	require.DeepEqual(t, expected.DomainBeaconProposer, actual.DomainBeaconProposer)
	require.DeepEqual(t, expected.DomainRandao, actual.DomainRandao)
	require.DeepEqual(t, expected.DomainBeaconAttester, actual.DomainBeaconAttester)
	require.DeepEqual(t, expected.DomainDeposit, actual.DomainDeposit)
	require.DeepEqual(t, expected.DomainVoluntaryExit, actual.DomainVoluntaryExit)
	require.DeepEqual(t, expected.DomainSelectionProof, actual.DomainSelectionProof)
	require.DeepEqual(t, expected.DomainAggregateAndProof, actual.DomainAggregateAndProof)
	require.DeepEqual(t, expected.DomainSyncCommittee, actual.DomainSyncCommittee)
	require.DeepEqual(t, expected.DomainSyncCommitteeSelectionProof, actual.DomainSyncCommitteeSelectionProof)
	require.DeepEqual(t, expected.DomainContributionAndProof, actual.DomainContributionAndProof)
	require.DeepEqual(t, expected.GweiPerEth, actual.GweiPerEth)
	require.DeepEqual(t, expected.BLSSecretKeyLength, actual.BLSSecretKeyLength)
	require.DeepEqual(t, expected.BLSPubkeyLength, actual.BLSPubkeyLength)
	require.DeepEqual(t, expected.DefaultBufferSize, actual.DefaultBufferSize)
	require.DeepEqual(t, expected.ValidatorPrivkeyFileName, actual.ValidatorPrivkeyFileName)
	require.DeepEqual(t, expected.WithdrawalPrivkeyFileName, actual.WithdrawalPrivkeyFileName)
	require.DeepEqual(t, expected.RPCSyncCheck, actual.RPCSyncCheck)
	require.DeepEqual(t, expected.EmptySignature, actual.EmptySignature)
	require.DeepEqual(t, expected.DefaultPageSize, actual.DefaultPageSize)
	require.DeepEqual(t, expected.MaxPeersToSync, actual.MaxPeersToSync)
	require.DeepEqual(t, expected.SlotsPerArchivedPoint, actual.SlotsPerArchivedPoint)
	require.DeepEqual(t, expected.GenesisCountdownInterval, actual.GenesisCountdownInterval)
	require.DeepEqual(t, expected.BeaconStateFieldCount, actual.BeaconStateFieldCount)
	require.DeepEqual(t, expected.BeaconStateAltairFieldCount, actual.BeaconStateAltairFieldCount)
	require.DeepEqual(t, expected.BeaconStateBellatrixFieldCount, actual.BeaconStateBellatrixFieldCount)
	require.DeepEqual(t, expected.BeaconStateCapellaFieldCount, actual.BeaconStateCapellaFieldCount)
	require.DeepEqual(t, expected.BeaconStateDenebFieldCount, actual.BeaconStateDenebFieldCount)
	require.DeepEqual(t, expected.WeakSubjectivityPeriod, actual.WeakSubjectivityPeriod)
	require.DeepEqual(t, expected.PruneSlasherStoragePeriod, actual.PruneSlasherStoragePeriod)
	require.DeepEqual(t, expected.SlashingProtectionPruningEpochs, actual.SlashingProtectionPruningEpochs)
	require.DeepEqual(t, expected.GenesisForkVersion, actual.GenesisForkVersion)
	require.DeepEqual(t, expected.AltairForkVersion, actual.AltairForkVersion)
	require.DeepEqual(t, expected.AltairForkEpoch, actual.AltairForkEpoch)
	require.DeepEqual(t, expected.BellatrixForkVersion, actual.BellatrixForkVersion)
	require.DeepEqual(t, expected.BellatrixForkEpoch, actual.BellatrixForkEpoch)
	require.DeepEqual(t, expected.ForkVersionSchedule, actual.ForkVersionSchedule)
	require.DeepEqual(t, expected.SafetyDecay, actual.SafetyDecay)
	require.DeepEqual(t, expected.TimelySourceFlagIndex, actual.TimelySourceFlagIndex)
	require.DeepEqual(t, expected.TimelyTargetFlagIndex, actual.TimelyTargetFlagIndex)
	require.DeepEqual(t, expected.TimelyHeadFlagIndex, actual.TimelyHeadFlagIndex)
	require.DeepEqual(t, expected.TimelySourceWeight, actual.TimelySourceWeight)
	require.DeepEqual(t, expected.TimelyTargetWeight, actual.TimelyTargetWeight)
	require.DeepEqual(t, expected.TimelyHeadWeight, actual.TimelyHeadWeight)
	require.DeepEqual(t, expected.SyncRewardWeight, actual.SyncRewardWeight)
	require.DeepEqual(t, expected.WeightDenominator, actual.WeightDenominator)
	require.DeepEqual(t, expected.ProposerWeight, actual.ProposerWeight)
	require.DeepEqual(t, expected.TargetAggregatorsPerSyncSubcommittee, actual.TargetAggregatorsPerSyncSubcommittee)
	require.DeepEqual(t, expected.SyncCommitteeSubnetCount, actual.SyncCommitteeSubnetCount)
	require.DeepEqual(t, expected.SyncCommitteeSize, actual.SyncCommitteeSize)
	require.DeepEqual(t, expected.InactivityScoreBias, actual.InactivityScoreBias)
	require.DeepEqual(t, expected.InactivityScoreRecoveryRate, actual.InactivityScoreRecoveryRate)
	require.DeepEqual(t, expected.EpochsPerSyncCommitteePeriod, actual.EpochsPerSyncCommitteePeriod)
	require.DeepEqual(t, expected.InactivityPenaltyQuotientAltair, actual.InactivityPenaltyQuotientAltair)
	require.DeepEqual(t, expected.MinSlashingPenaltyQuotientAltair, actual.MinSlashingPenaltyQuotientAltair)
	require.DeepEqual(t, expected.ProportionalSlashingMultiplierAltair, actual.ProportionalSlashingMultiplierAltair)
	require.DeepEqual(t, expected.MinSlashingPenaltyQuotientBellatrix, actual.MinSlashingPenaltyQuotientBellatrix)
	require.DeepEqual(t, expected.ProportionalSlashingMultiplierBellatrix, actual.ProportionalSlashingMultiplierBellatrix)
	require.DeepEqual(t, expected.InactivityPenaltyQuotientBellatrix, actual.InactivityPenaltyQuotientBellatrix)
	require.DeepEqual(t, expected.MinSyncCommitteeParticipants, actual.MinSyncCommitteeParticipants)
	require.DeepEqual(t, expected.TerminalBlockHash, actual.TerminalBlockHash)
	require.DeepEqual(t, expected.TerminalBlockHashActivationEpoch, actual.TerminalBlockHashActivationEpoch)
	require.DeepEqual(t, expected.TerminalTotalDifficulty, actual.TerminalTotalDifficulty)
	require.DeepEqual(t, expected.DefaultFeeRecipient, actual.DefaultFeeRecipient)
}