package storage

import "github.com/Fuwn/plutia/internal/types"

type BlockHashEntry struct {
	BlockID uint64
	Hash    string
}

type OperationMutation struct {
	State types.StateV1
	Ref   *types.BlockRefV1
}

type Store interface {
	Close() error
	GetMode() (string, error)
	SetMode(mode string) error
	GetGlobalSeq() (uint64, error)
	SetGlobalSeq(seq uint64) error
	PutState(state types.StateV1) error
	DeleteState(did string) error
	GetState(did string) (types.StateV1, bool, error)
	ListStates() ([]types.StateV1, error)
	ForEachState(fn func(types.StateV1) error) error
	PutThinCacheMeta(meta types.ThinCacheMetaV1) error
	GetThinCacheMeta(did string) (types.ThinCacheMetaV1, bool, error)
	ListThinCacheMeta() ([]types.ThinCacheMetaV1, error)
	DeleteThinCacheMeta(did string) error
	ApplyOperationsBatch(ops []OperationMutation, blockHashes []BlockHashEntry) error
	SetChainHead(did string, seq uint64) error
	GetChainHead(did string) (uint64, bool, error)
	AddDIDSequence(did string, seq uint64) error
	ListDIDSequences(did string) ([]uint64, error)
	PutOpSeqRef(seq uint64, ref types.BlockRefV1) error
	GetOpSeqRef(seq uint64) (types.BlockRefV1, bool, error)
	ForEachOpSeqRef(fn func(seq uint64, ref types.BlockRefV1) error) error
	PutBlockHash(blockID uint64, hash string) error
	GetBlockHash(blockID uint64) (string, bool, error)
	ListBlockHashes() ([]string, error)
	ListBlockHashEntries() ([]BlockHashEntry, error)
	PutCheckpoint(cp types.CheckpointV1) error
	GetCheckpoint(sequence uint64) (types.CheckpointV1, bool, error)
	GetLatestCheckpoint() (types.CheckpointV1, bool, error)
}