Merge pull request #290 from xssnick/ec-example

Added ExtraCurrency example

example/send-extra-currency/main.go

@@ -0,0 +1,127 @@
+package main
+
+import (
+	"context"
+	"encoding/base64"
+	"github.com/xssnick/tonutils-go/tlb"
+	"github.com/xssnick/tonutils-go/tvm/cell"
+	"log"
+	"strings"
+
+	"github.com/xssnick/tonutils-go/address"
+	"github.com/xssnick/tonutils-go/liteclient"
+	"github.com/xssnick/tonutils-go/ton"
+	"github.com/xssnick/tonutils-go/ton/wallet"
+)
+
+func main() {
+	client := liteclient.NewConnectionPool()
+
+	// connect to mainnet lite server
+	err := client.AddConnectionsFromConfigUrl(context.Background(), "https://ton-blockchain.github.io/testnet-global.config.json")
+	if err != nil {
+		log.Fatalln("connection err: ", err.Error())
+		return
+	}
+
+	api := ton.NewAPIClient(client).WithRetry()
+
+	// seed words of account, you can generate them with any wallet or using wallet.NewSeed() method
+	words := strings.Split("birth pattern then forest walnut then phrase walnut fan pumpkin pattern then cluster blossom verify then forest velvet pond fiction pattern collect then then", " ")
+
+	w, err := wallet.FromSeed(api, words, wallet.ConfigV5R1Final{
+		NetworkGlobalID: wallet.TestnetGlobalID,
+		Workchain:       0,
+	})
+	if err != nil {
+		log.Fatalln("FromSeed err:", err.Error())
+		return
+	}
+
+	log.Println("wallet address:", w.WalletAddress())
+
+	block, err := api.CurrentMasterchainInfo(context.Background())
+	if err != nil {
+		log.Fatalln("CurrentMasterchainInfo err:", err.Error())
+		return
+	}
+
+	acc, err := api.GetAccount(context.Background(), block, w.WalletAddress())
+	if err != nil {
+		log.Fatalln("GetAccount err:", err.Error())
+		return
+	}
+
+	if !acc.IsActive {
+		log.Fatalln("Wallet is empty")
+		return
+	}
+	balance := acc.State.Balance
+
+	if !acc.State.ExtraCurrencies.IsEmpty() {
+		currencies, err := acc.State.ExtraCurrencies.LoadAll()
+		if err != nil {
+			log.Fatalln("LoadAll err:", err.Error())
+			return
+		}
+
+		ec := cell.NewDict(32)
+
+		// printing all extra currencies we have, and preparing them to send
+		for _, kv := range currencies {
+			id := kv.Key.MustLoadBigUInt(32)
+			amount := kv.Value.MustLoadVarUInt(32)
+
+			log.Printf("ExtraCurrency ID: %d, Amount: %s\n", id.Uint64(), amount.String())
+
+			// adding currency to send in tx
+			_ = ec.SetIntKey(id, cell.BeginCell().MustStoreBigVarUInt(amount, 32).EndCell())
+		}
+
+		// sending extra currencies to another address
+		tx, _, err := w.SendWaitTransaction(context.Background(), &wallet.Message{
+			Mode: wallet.PayGasSeparately + wallet.IgnoreErrors,
+			InternalMessage: &tlb.InternalMessage{
+				Bounce:          true,
+				DstAddr:         address.MustParseAddr("kQAbMQzuuGiCne0R7QEj9nrXsjM7gNjeVmrlBZouyC-SCALE"),
+				Amount:          tlb.MustFromTON("0.05"),
+				ExtraCurrencies: ec,
+				Body:            cell.BeginCell().EndCell(),
+			},
+		})
+		if err != nil {
+			log.Fatalln("Send err:", err.Error())
+			return
+		}
+
+		log.Println("transaction with extra currencies sent, hash:", base64.StdEncoding.EncodeToString(tx.Hash))
+
+		return
+	}
+
+	// checking ton balance and minting extra currency through test contract
+	if balance.Nano().Cmp(tlb.MustFromTON("3.15").Nano()) > 0 {
+		log.Println("minting some extra currency...")
+
+		tx, _, err := w.SendWaitTransaction(context.Background(), &wallet.Message{
+			Mode: wallet.PayGasSeparately + wallet.IgnoreErrors, // pay fees separately (from balance, not from amount)
+			InternalMessage: &tlb.InternalMessage{
+				Bounce:  true, // return amount in case of processing error
+				DstAddr: address.MustParseAddr("kQC_rkxBuZDwS81yvMSLzeXBNLCGFNofm0avwlMfNXCwoOgr"),
+				Amount:  tlb.MustFromTON("3.1"),
+				Body:    cell.BeginCell().EndCell(),
+			},
+		})
+		if err != nil {
+			log.Fatalln("Send err:", err.Error())
+			return
+		}
+
+		log.Println("transaction sent, extra currency minted, hash:", base64.StdEncoding.EncodeToString(tx.Hash))
+		log.Println("run again to send extra currencies")
+
+		return
+	}
+
+	log.Println("not enough ton balance to mint extra currency:", balance.String())
+}