builder

type Backend interface {
	UTXOs(ctx context.Context, sourceChainID ids.ID) ([]*avax.UTXO, error)
}

type Builder interface {
	// Context returns the configuration of the chain that this builder uses to
	// create transactions.
	Context() *Context

	// 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 Context struct {
	NetworkID        uint32
	BlockchainID     ids.ID
	AVAXAssetID      ids.ID
	BaseTxFee        uint64
	CreateAssetTxFee uint64
}