database

type Account struct {
	ID      AccountID
	Nonce   uint64
	Balance uint64
}

type AccountID string

type Block struct {
	Header     BlockHeader
	MerkleTree *merkle.Tree[BlockTx]
}

type BlockData struct {
	Hash   string      `json:"hash"`
	Header BlockHeader `json:"block"`
	Trans  []BlockTx   `json:"trans"`
}

type BlockHeader struct {
	Number        uint64    `json:"number"`          // Block number.
	PrevBlockHash string    `json:"prev_block_hash"` // Previous block hash.
	Timestamp     uint64    `json:"timestamp"`       // Block timestamp.
	BeneficiaryID AccountID `json:"beneficiary"`     // Fee/tip recipient.
	Difficulty    uint16    `json:"difficulty"`      // Mining difficulty.
	MiningReward  uint64    `json:"mining_reward"`   // Mining reward.
	StateRoot     string    `json:"state_root"`      // Accounts state Merkle root.
	TransRoot     string    `json:"trans_root"`      // Transactions Merkle root.
	Solution      uint64    `json:"solution"`        // The mined block solution.
}

type BlockTx struct {
	SignedTx

	// The timestamp of when the transaction was received.
	// Format: Unix timestamp in milliseconds.
	Timestamp uint64 `json:"timestamp"`

	// The price of one unit of gas.
	GasPrice uint64 `json:"gas_price"`

	// The number of units used in this transaction.
	GasUnits uint64 `json:"gas_units"`
}

type Database struct {
	// contains filtered or unexported fields
}

type DatabaseIterator struct {
	// contains filtered or unexported fields
}

type Iterator interface {
	Next() (BlockData, error)
	Done() bool
}

type SignedTx struct {
	Tx
	Sig signature.Sig
}

type Storage interface {
	WriteBlock(blockData BlockData) error
	GetBlock(num uint64) (BlockData, error)
	ForEach() Iterator
	Close() error
	Reset() error
}

type Tx struct {
	// ChainID represents a unique identifier for this blockchain.
	// It is used to run multiple blockchains in parallel
	// without conflicting with each other.
	//
	// Current SPEC:
	// ChainID 0: Development
	// ChainID 1: Production
	ChainID uint16 `json:"chain_id"`

	// Nonce represents a unique identifier for this transaction.
	// Currently it's an incremental number representing the transaction number.
	Nonce uint64 `json:"nonce"`

	From   AccountID `json:"from"`
	To     AccountID `json:"to"`
	Amount uint64    `json:"amount"`

	// Tip is offered by the sender as an incentive to mine this transaction.
	Tip uint64 `json:"tip"`

	// Optional data attached to this transaction.
	Data []byte `json:"data"`
}