chore: Add Run to gnoclient

Signed-off-by: Jeff Thompson <jeff@thefirst.org>

gno.land/pkg/gnoclient/client_txs.go

@@ -2,6 +2,7 @@ package gnoclient
 
 import (
 	"github.com/gnolang/gno/gno.land/pkg/sdk/vm"
+	gno "github.com/gnolang/gno/gnovm/pkg/gnolang"
 	"github.com/gnolang/gno/tm2/pkg/amino"
 	ctypes "github.com/gnolang/gno/tm2/pkg/bft/rpc/core/types"
 	"github.com/gnolang/gno/tm2/pkg/errors"
@@ -21,6 +22,16 @@ type CallCfg struct {
 	Memo           string   // Memo
 }
 
+// RunCfg contains configuration options for running a temporary package on the blockchain.
+type RunCfg struct {
+	Package        *std.MemPackage
+	GasFee         string // Gas fee
+	GasWanted      int64  // Gas wanted
+	AccountNumber  uint64 // Account number
+	SequenceNumber uint64 // Sequence number
+	Memo           string // Memo
+}
+
 // Call executes a contract call on the blockchain.
 func (c *Client) Call(cfg CallCfg) (*ctypes.ResultBroadcastTxCommit, error) {
 	// Validate required client fields.
@@ -81,6 +92,61 @@ func (c *Client) Call(cfg CallCfg) (*ctypes.ResultBroadcastTxCommit, error) {
 	return c.signAndBroadcastTxCommit(tx, accountNumber, sequenceNumber)
 }
 
+// Temporarily load cfg.Package on the blockchain and run main() which can
+// call realm functions and use println() to output to the "console".
+// This returns bres where string(bres.DeliverTx.Data) is the "console" output.
+func (c *Client) Run(cfg RunCfg) (*ctypes.ResultBroadcastTxCommit, error) {
+	// Validate required client fields.
+	if err := c.validateSigner(); err != nil {
+		return nil, errors.Wrap(err, "validate signer")
+	}
+	if err := c.validateRPCClient(); err != nil {
+		return nil, errors.Wrap(err, "validate RPC client")
+	}
+
+	memPkg := cfg.Package
+	gasWanted := cfg.GasWanted
+	gasFee := cfg.GasFee
+	sequenceNumber := cfg.SequenceNumber
+	accountNumber := cfg.AccountNumber
+	memo := cfg.Memo
+
+	// Validate config.
+	if memPkg.IsEmpty() {
+		return nil, errors.New("found an empty package " + memPkg.Path)
+	}
+
+	// Parse gas wanted & fee.
+	gasFeeCoins, err := std.ParseCoin(gasFee)
+	if err != nil {
+		return nil, errors.Wrap(err, "parsing gas fee coin")
+	}
+
+	caller := c.Signer.Info().GetAddress()
+
+	// precompile and validate syntax
+	err = gno.PrecompileAndCheckMempkg(memPkg)
+	if err != nil {
+		panic(err)
+	}
+	memPkg.Name = "main"
+	memPkg.Path = "gno.land/r/" + caller.String() + "/run"
+
+	// Construct message & transaction and marshal.
+	msg := vm.MsgRun{
+		Caller:  caller,
+		Package: memPkg,
+	}
+	tx := std.Tx{
+		Msgs:       []std.Msg{msg},
+		Fee:        std.NewFee(gasWanted, gasFeeCoins),
+		Signatures: nil,
+		Memo:       memo,
+	}
+
+	return c.signAndBroadcastTxCommit(tx, accountNumber, sequenceNumber)
+}
+
 // signAndBroadcastTxCommit signs a transaction and broadcasts it, returning the result.
 func (c Client) signAndBroadcastTxCommit(tx std.Tx, accountNumber, sequenceNumber uint64) (*ctypes.ResultBroadcastTxCommit, error) {
 	caller := c.Signer.Info().GetAddress()