chore(examples): Add send_coins example

bindings/go/examples/prepare_send_coins/main.go

@@ -0,0 +1,50 @@
+// Copyright (c) 2025 IOTA Stiftung
+// SPDX-License-Identifier: Apache-2.0
+
+package main
+
+import (
+	"log"
+
+	sdk "bindings/iota_sdk_ffi"
+)
+
+func main() {
+	client := sdk.GraphQlClientNewDevnet()
+
+	fromAddress, _ := sdk.AddressFromHex("0x611830d3641a68f94a690dcc25d1f4b0dac948325ac18f6dd32564371735f32c")
+	toAddress, _ := sdk.AddressFromHex("0x0000a4984bd495d4346fa208ddff4f5d5e5ad48c21dec631ddebc99809f16900")
+
+	// This is a coin of type
+	// 0x3358bea865960fea2a1c6844b6fc365f662463dd1821f619838eb2e606a53b6a::cert::CERT
+	coinObjId, _ := sdk.ObjectIdFromHex("0x8ef4259fa2a3499826fa4b8aebeb1d8e478cf5397d05361c96438940b43d28c9")
+	amount := uint64(50000000000)
+	gasCoinObjId, _ := sdk.ObjectIdFromHex("0x0b0270ee9d27da0db09651e5f7338dfa32c7ee6441ccefa1f6e305735bcfc7ab")
+
+	builder := sdk.TransactionBuilderInit(fromAddress, client)
+	builder.SendCoins([]*sdk.ObjectId{coinObjId}, toAddress, &amount)
+	builder.Gas(gasCoinObjId).GasBudget(1000000000)
+
+	txn, err := builder.Finish()
+	if err.(*sdk.SdkFfiError) != nil {
+		log.Fatalf("Failed to create transaction: %v", err)
+	}
+
+	txnBytes, err := txn.BcsSerialize()
+	if err != nil {
+		log.Fatalf("Failed to serialize transaction: %v", err)
+	}
+	log.Printf("Signing Digest: %v", sdk.HexEncode(txn.SigningDigest()))
+	log.Printf("Txn Bytes: %v", sdk.Base64Encode(txnBytes))
+
+	res, err := builder.DryRun(false)
+	if err.(*sdk.SdkFfiError) != nil {
+		log.Fatalf("Failed to send coins: %v", err)
+	}
+
+	if res.Error != nil {
+		log.Fatalf("Failed to send coins: %v", *res.Error)
+	}
+
+	log.Print("Send coins dry run was successful!")
+}

bindings/kotlin/examples/PrepareSendCoins.kt

@@ -0,0 +1,51 @@
+// Copyright (c) 2025 IOTA Stiftung
+// SPDX-License-Identifier: Apache-2.0
+
+import iota_sdk.*
+import kotlinx.coroutines.runBlocking
+
+fun main() = runBlocking {
+    try {
+        val client = GraphQlClient.newDevnet()
+
+        val fromAddress =
+                Address.fromHex(
+                        "0x611830d3641a68f94a690dcc25d1f4b0dac948325ac18f6dd32564371735f32c"
+                )
+        val toAddress =
+                Address.fromHex(
+                        "0x0000a4984bd495d4346fa208ddff4f5d5e5ad48c21dec631ddebc99809f16900"
+                )
+
+        // This is a coin of type
+        // 0x3358bea865960fea2a1c6844b6fc365f662463dd1821f619838eb2e606a53b6a::cert::CERT
+        val coinId =
+                ObjectId.fromHex(
+                        "0x8ef4259fa2a3499826fa4b8aebeb1d8e478cf5397d05361c96438940b43d28c9"
+                )
+        val gasCoinId =
+                ObjectId.fromHex(
+                        "0x0b0270ee9d27da0db09651e5f7338dfa32c7ee6441ccefa1f6e305735bcfc7ab"
+                )
+
+        val builder = TransactionBuilder.init(fromAddress, client)
+
+        builder.sendCoins(listOf(coinId), toAddress, 50000000000uL)
+        builder.gas(gasCoinId).gasBudget(1000000000uL)
+
+        val txn = builder.finish()
+
+        println("Signing Digest: ${hexEncode(txn.signingDigest())}")
+        println("Txn Bytes: ${base64Encode(txn.bcsSerialize())}")
+
+        val res = builder.dryRun()
+
+        if (res.error != null) {
+            throw Exception("Failed to send coins: ${res.error}")
+        }
+
+        println("Send coins dry run was successful!")
+    } catch (e: Exception) {
+        e.printStackTrace()
+    }
+}

bindings/python/examples/prepare_send_coins.py

@@ -0,0 +1,53 @@
+# Copyright (c) 2025 IOTA Stiftung
+# SPDX-License-Identifier: Apache-2.0
+
+from lib.iota_sdk_ffi import *
+
+import asyncio
+
+
+async def main():
+    try:
+        client = GraphQlClient.new_devnet()
+
+        from_address = Address.from_hex(
+            "0x611830d3641a68f94a690dcc25d1f4b0dac948325ac18f6dd32564371735f32c"
+        )
+        to_address = Address.from_hex(
+            "0x0000a4984bd495d4346fa208ddff4f5d5e5ad48c21dec631ddebc99809f16900"
+        )
+
+        # This is a coin of type
+        # 0x3358bea865960fea2a1c6844b6fc365f662463dd1821f619838eb2e606a53b6a::cert::CERT
+        coin_id = ObjectId.from_hex(
+            "0x8ef4259fa2a3499826fa4b8aebeb1d8e478cf5397d05361c96438940b43d28c9"
+        )
+        gas_coin_id = ObjectId.from_hex(
+            "0x0b0270ee9d27da0db09651e5f7338dfa32c7ee6441ccefa1f6e305735bcfc7ab"
+        )
+
+        builder = await TransactionBuilder.init(from_address, client)
+        builder.send_coins(
+            [coin_id],
+            to_address,
+            50000000000,
+        )
+        builder.gas(gas_coin_id).gas_budget(1000000000)
+
+        txn = await builder.finish()
+
+        print("Signing Digest:", hex_encode(txn.signing_digest()))
+        print("Txn Bytes:", base64_encode(txn.bcs_serialize()))
+
+        res = await builder.dry_run()
+        if res.error is not None:
+            raise Exception("Failed to send coins:", res.error)
+
+        print("Send coins dry run was successful!")
+
+    except Exception as e:
+        print(f"Error: {e}")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())

crates/iota-graphql-client/examples/prepare_send_coins.rs

@@ -0,0 +1,52 @@
+// Copyright (c) 2025 IOTA Stiftung
+// SPDX-License-Identifier: Apache-2.0
+
+use std::str::FromStr;
+
+use base64ct::Encoding;
+use eyre::Result;
+use iota_graphql_client::Client;
+use iota_transaction_builder::TransactionBuilder;
+use iota_types::{Address, ObjectId};
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    let client = Client::new_devnet();
+
+    let from_address =
+        Address::from_str("0x611830d3641a68f94a690dcc25d1f4b0dac948325ac18f6dd32564371735f32c")?;
+    let to_address =
+        Address::from_str("0x0000a4984bd495d4346fa208ddff4f5d5e5ad48c21dec631ddebc99809f16900")?;
+
+    // This is a coin of type
+    // 0x3358bea865960fea2a1c6844b6fc365f662463dd1821f619838eb2e606a53b6a::cert::CERT
+    let coin =
+        ObjectId::from_str("0x8ef4259fa2a3499826fa4b8aebeb1d8e478cf5397d05361c96438940b43d28c9")?;
+    let gas_coin =
+        ObjectId::from_str("0x0b0270ee9d27da0db09651e5f7338dfa32c7ee6441ccefa1f6e305735bcfc7ab")?;
+
+    let mut builder = TransactionBuilder::new(from_address).with_client(client.clone());
+
+    builder
+        .send_coins([coin], to_address, 50000000000)
+        .gas(gas_coin)
+        .gas_budget(1000000000);
+
+    let txn = builder.finish().await?;
+
+    println!("Signing Digest: {}", hex::encode(txn.signing_digest()));
+    println!(
+        "Txn Bytes: {}",
+        base64ct::Base64::encode_string(&bcs::to_bytes(&txn)?)
+    );
+
+    let res = client.dry_run_tx(&txn, false).await?;
+
+    if let Some(err) = res.error {
+        eyre::bail!("Failed to send coins: {err}");
+    }
+
+    println!("Send coins dry run was successful!");
+
+    Ok(())
+}