package statechange

import (
	"github.com/ledgerwatch/erigon/cl/abstract"
	"github.com/ledgerwatch/erigon/cl/clparams"
)

// ProcessEpoch process epoch transition.
func ProcessEpoch(state abstract.BeaconState) error {
	if err := ProcessJustificationBitsAndFinality(state); err != nil {
		return err
	}
	if state.Version() >= clparams.AltairVersion {
		if err := ProcessInactivityScores(state); err != nil {
			return err
		}
	}
	if err := ProcessRewardsAndPenalties(state); err != nil {
		return err
	}
	if err := ProcessRegistryUpdates(state); err != nil {
		return err
	}
	if err := ProcessSlashings(state); err != nil {
		return err
	}
	ProcessEth1DataReset(state)
	if err := ProcessEffectiveBalanceUpdates(state); err != nil {
		return err
	}
	ProcessSlashingsReset(state)
	ProcessRandaoMixesReset(state)
	if err := ProcessHistoricalRootsUpdate(state); err != nil {
		return err
	}
	if state.Version() == clparams.Phase0Version {
		if err := ProcessParticipationRecordUpdates(state); err != nil {
			return err
		}
	}

	if state.Version() >= clparams.AltairVersion {
		ProcessParticipationFlagUpdates(state)
		if err := ProcessSyncCommitteeUpdate(state); err != nil {
			return err
		}
	}
	return nil
}