libbtc

type Account interface {
	Client
	Address() (btcutil.Address, error)
	SerializedPublicKey() ([]byte, error)
	Transfer(ctx context.Context, to string, value, fee int64, sendAll bool) (string, error)
	SendTransaction(
		ctx context.Context,
		script []byte,
		fee int64,
		updateTxIn func(*wire.TxIn),
		preCond func(*wire.MsgTx) bool,
		f func(*txscript.ScriptBuilder),
		postCond func(*wire.MsgTx) bool,
	) error
}

type Address struct {
	PublicKeyHash    string `json:"hash160"`
	Address          string `json:"address"`
	TransactionCount int64  `json:"n_tx"`
	Received         int64  `json:"total_received"`
	Sent             int64  `json:"total_sent"`
	Balance          int64  `json:"final_balance"`
}

type Block struct {
	BlockHash         string        `json:"hash"`
	Version           uint8         `json:"ver"`
	PreviousBlockHash string        `json:"prev_block"`
	MerkleRoot        string        `json:"mrkl_root"`
	Time              int64         `json:"time"`
	Bits              int64         `json:"bits"`
	Nonce             int64         `json:"nonce"`
	TransactionCount  int           `json:"n_tx"`
	Size              int64         `json:"size"`
	BlockIndex        uint64        `json:"block_index"`
	MainChain         bool          `json:"main_chain"`
	Height            int64         `json:"height"`
	ReceivedTime      int64         `json:"received_time"`
	RelayedBy         string        `json:"relayed_by"`
	Transactions      []Transaction `json:"tx"`
}

type Blocks struct {
	Blocks []Block `json:"block"`
}

type Client interface {
	// NetworkParams should return the network parameters of the underlying
	// Bitcoin blockchain.
	NetworkParams() *chaincfg.Params
	GetUnspentOutputs(ctx context.Context, address string, limit, confitmations int64) (Unspent, error)
	GetRawTransaction(ctx context.Context, txhash string) (Transaction, error)
	GetRawAddressInformation(ctx context.Context, addr string) (SingleAddress, error)

	// PublishTransaction should publish a signed transaction to the Bitcoin
	// blockchain.
	PublishTransaction(ctx context.Context, signedTransaction []byte) error

	// Balance of the given address on Bitcoin blockchain.
	Balance(ctx context.Context, address string, confirmations int64) (int64, error)

	// ScriptSpent checks whether a script is spent.
	ScriptSpent(ctx context.Context, address string) (bool, error)

	// ScriptFunded checks whether a script is funded.
	ScriptFunded(ctx context.Context, address string, value int64) (bool, int64, error)

	ScriptRedeemed(ctx context.Context, address string, value int64) (bool, int64, error)

	GetScriptFromSpentP2SH(ctx context.Context, address string) ([]byte, error)

	Confirmations(ctx context.Context, txHash string) (int64, error)

	// FormatTransactionView formats the message and txhash into a user friendly
	// message.
	FormatTransactionView(msg, txhash string) string
}

type Input struct {
	PrevOut PreviousOut `json:"prev_out"`
	Script  string      `json:"script"`
}

type LatestBlock struct {
	Hash       string `json:"hash"`
	Time       int64  `json:"time"`
	BlockIndex int64  `json:"block_index"`
	Height     int64  `json:"height"`
}

type MultiAddress struct {
	Addresses    []Address     `json:"addresses"`
	Transactions []Transaction `json:"txs"`
}

type Output struct {
	Value           uint64 `json:"value"`
	TransactionHash string `json:"hash"`
	Script          string `json:"script"`
}

type PreviousOut struct {
	TransactionHash  string `json:"hash"`
	Value            uint64 `json:"value"`
	TransactionIndex uint64 `json:"tx_index"`
	VoutNumber       uint8  `json:"n"`
	Address          string `json:"addr"`
}

type SingleAddress struct {
	PublicKeyHash              string        `json:"hash160"`
	Address                    string        `json:"address"`
	TransactionCount           int64         `json:"n_tx"`
	UnredeemedTransactionCount int64         `json:"n_unredeemed"`
	Received                   int64         `json:"total_received"`
	Sent                       int64         `json:"total_sent"`
	Balance                    int64         `json:"final_balance"`
	Transactions               []Transaction `json:"txs"`
}

type Transaction struct {
	TransactionHash  string   `json:"hash"`
	Version          uint8    `json:"ver"`
	VinSize          uint32   `json:"vin_sz"`
	VoutSize         uint32   `json:"vout_sz"`
	Size             int64    `json:"size"`
	RelayedBy        string   `json:"relayed_by"`
	BlockHeight      int64    `json:"block_height"`
	TransactionIndex uint64   `json:"tx_index"`
	Inputs           []Input  `json:"inputs"`
	Outputs          []Output `json:"out"`
}

type Unspent struct {
	Outputs []UnspentOutput `json:"unspent_outputs"`
}

type UnspentOutput struct {
	TransactionAge          string `json:"tx_age"`
	TransactionHash         string `json:"tx_hash"`
	TransactionIndex        uint32 `json:"tx_index"`
	TransactionOutputNumber uint32 `json:"tx_output_n"`
	ScriptPubKey            string `json:"script"`
	Amount                  int64  `json:"value"`
}