x

type Backend interface {
	common.ChainUTXOs
	BuilderBackend
	SignerBackend

	AcceptTx(ctx stdcontext.Context, tx *txs.Tx) error
}

type Builder interface {
	// GetFTBalance calculates the amount of each fungible asset that this
	// builder has control over.
	GetFTBalance(
		options ...common.Option,
	) (map[ids.ID]uint64, error)

	// GetImportableBalance calculates the amount of each fungible asset that
	// this builder could import from the provided chain.
	//
	// - [chainID] specifies the chain the funds are from.
	GetImportableBalance(
		chainID ids.ID,
		options ...common.Option,
	) (map[ids.ID]uint64, error)

	// NewBaseTx creates a new simple value transfer.
	//
	// - [outputs] specifies all the recipients and amounts that should be sent
	//   from this transaction.
	NewBaseTx(
		outputs []*avax.TransferableOutput,
		options ...common.Option,
	) (*txs.BaseTx, error)

	// NewCreateAssetTx creates a new asset.
	//
	// - [name] specifies a human readable name for this asset.
	// - [symbol] specifies a human readable abbreviation for this asset.
	// - [denomination] specifies how many times the asset can be split. For
	//   example, a denomination of [4] would mean that the smallest unit of the
	//   asset would be 0.001 units.
	// - [initialState] specifies the supported feature extensions for this
	//   asset as well as the initial outputs for the asset.
	NewCreateAssetTx(
		name string,
		symbol string,
		denomination byte,
		initialState map[uint32][]verify.State,
		options ...common.Option,
	) (*txs.CreateAssetTx, error)

	// NewOperationTx performs state changes on the UTXO set. These state
	// changes may be more complex than simple value transfers.
	//
	// - [operations] specifies the state changes to perform.
	NewOperationTx(
		operations []*txs.Operation,
		options ...common.Option,
	) (*txs.OperationTx, error)

	// NewOperationTxMintFT performs a set of state changes that mint new tokens
	// for the requested assets.
	//
	// - [outputs] maps the assetID to the output that should be created for the
	//   asset.
	NewOperationTxMintFT(
		outputs map[ids.ID]*secp256k1fx.TransferOutput,
		options ...common.Option,
	) (*txs.OperationTx, error)

	// NewOperationTxMintNFT performs a state change that mints new NFTs for the
	// requested asset.
	//
	// - [assetID] specifies the asset to mint the NFTs under.
	// - [payload] specifies the payload to provide each new NFT.
	// - [owners] specifies the new owners of each NFT.
	NewOperationTxMintNFT(
		assetID ids.ID,
		payload []byte,
		owners []*secp256k1fx.OutputOwners,
		options ...common.Option,
	) (*txs.OperationTx, error)

	// NewOperationTxMintProperty performs a state change that mints a new
	// property for the requested asset.
	//
	// - [assetID] specifies the asset to mint the property under.
	// - [owner] specifies the new owner of the property.
	NewOperationTxMintProperty(
		assetID ids.ID,
		owner *secp256k1fx.OutputOwners,
		options ...common.Option,
	) (*txs.OperationTx, error)

	// NewOperationTxBurnProperty performs state changes that burns all the
	// properties of the requested asset.
	//
	// - [assetID] specifies the asset to burn the property of.
	NewOperationTxBurnProperty(
		assetID ids.ID,
		options ...common.Option,
	) (*txs.OperationTx, error)

	// NewImportTx creates an import transaction that attempts to consume all
	// the available UTXOs and import the funds to [to].
	//
	// - [chainID] specifies the chain to be importing funds from.
	// - [to] specifies where to send the imported funds to.
	NewImportTx(
		chainID ids.ID,
		to *secp256k1fx.OutputOwners,
		options ...common.Option,
	) (*txs.ImportTx, error)

	// NewExportTx creates an export transaction that attempts to send all the
	// provided [outputs] to the requested [chainID].
	//
	// - [chainID] specifies the chain to be exporting the funds to.
	// - [outputs] specifies the outputs to send to the [chainID].
	NewExportTx(
		chainID ids.ID,
		outputs []*avax.TransferableOutput,
		options ...common.Option,
	) (*txs.ExportTx, error)
}

type BuilderBackend interface {
	Context

	UTXOs(ctx stdcontext.Context, sourceChainID ids.ID) ([]*avax.UTXO, error)
}

type Context interface {
	NetworkID() uint32
	BlockchainID() ids.ID
	AVAXAssetID() ids.ID
	BaseTxFee() uint64
	CreateAssetTxFee() uint64
}

type Signer interface {
	SignUnsigned(ctx stdcontext.Context, tx txs.UnsignedTx) (*txs.Tx, error)
	Sign(ctx stdcontext.Context, tx *txs.Tx) error
}

type SignerBackend interface {
	GetUTXO(ctx stdcontext.Context, chainID, utxoID ids.ID) (*avax.UTXO, error)
}

type Wallet interface {
	Context

	// Builder returns the builder that will be used to create the transactions.
	Builder() Builder

	// Signer returns the signer that will be used to sign the transactions.
	Signer() Signer

	// IssueBaseTx creates, signs, and issues a new simple value transfer.
	//
	// - [outputs] specifies all the recipients and amounts that should be sent
	//   from this transaction.
	IssueBaseTx(
		outputs []*avax.TransferableOutput,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueCreateAssetTx creates, signs, and issues a new asset.
	//
	// - [name] specifies a human readable name for this asset.
	// - [symbol] specifies a human readable abbreviation for this asset.
	// - [denomination] specifies how many times the asset can be split. For
	//   example, a denomination of [4] would mean that the smallest unit of the
	//   asset would be 0.001 units.
	// - [initialState] specifies the supported feature extensions for this
	//   asset as well as the initial outputs for the asset.
	IssueCreateAssetTx(
		name string,
		symbol string,
		denomination byte,
		initialState map[uint32][]verify.State,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueOperationTx creates, signs, and issues state changes on the UTXO
	// set. These state changes may be more complex than simple value transfers.
	//
	// - [operations] specifies the state changes to perform.
	IssueOperationTx(
		operations []*txs.Operation,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueOperationTxMintFT creates, signs, and issues a set of state changes
	// that mint new tokens for the requested assets.
	//
	// - [outputs] maps the assetID to the output that should be created for the
	//   asset.
	IssueOperationTxMintFT(
		outputs map[ids.ID]*secp256k1fx.TransferOutput,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueOperationTxMintNFT creates, signs, and issues a state change that
	// mints new NFTs for the requested asset.
	//
	// - [assetID] specifies the asset to mint the NFTs under.
	// - [payload] specifies the payload to provide each new NFT.
	// - [owners] specifies the new owners of each NFT.
	IssueOperationTxMintNFT(
		assetID ids.ID,
		payload []byte,
		owners []*secp256k1fx.OutputOwners,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueOperationTxMintProperty creates, signs, and issues a state change
	// that mints a new property for the requested asset.
	//
	// - [assetID] specifies the asset to mint the property under.
	// - [owner] specifies the new owner of the property.
	IssueOperationTxMintProperty(
		assetID ids.ID,
		owner *secp256k1fx.OutputOwners,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueOperationTxBurnProperty creates, signs, and issues state changes
	// that burns all the properties of the requested asset.
	//
	// - [assetID] specifies the asset to burn the property of.
	IssueOperationTxBurnProperty(
		assetID ids.ID,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueImportTx creates, signs, and issues an import transaction that
	// attempts to consume all the available UTXOs and import the funds to [to].
	//
	// - [chainID] specifies the chain to be importing funds from.
	// - [to] specifies where to send the imported funds to.
	IssueImportTx(
		chainID ids.ID,
		to *secp256k1fx.OutputOwners,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueExportTx creates, signs, and issues an export transaction that
	// attempts to send all the provided [outputs] to the requested [chainID].
	//
	// - [chainID] specifies the chain to be exporting the funds to.
	// - [outputs] specifies the outputs to send to the [chainID].
	IssueExportTx(
		chainID ids.ID,
		outputs []*avax.TransferableOutput,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueUnsignedTx signs and issues the unsigned tx.
	IssueUnsignedTx(
		utx txs.UnsignedTx,
		options ...common.Option,
	) (*txs.Tx, error)

	// IssueTx issues the signed tx.
	IssueTx(
		tx *txs.Tx,
		options ...common.Option,
	) error
}