From ef8844f7c7c269f862ed9fe5791000e4ae694cc2 Mon Sep 17 00:00:00 2001
From: Maksym Karpinskyi <karpinskyi@DESKTOP-4A7OTK3>
Date: Mon, 30 Sep 2024 17:22:40 +0300
Subject: [PATCH] complete lesson 3

---
 .gitignore  |  3 +++
 transfer.ts | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 transfer.ts

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..6fe20f0f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+node_modules
+.env
+package-lock.json
\ No newline at end of file
diff --git a/transfer.ts b/transfer.ts
new file mode 100644
index 00000000..b73d2105
--- /dev/null
+++ b/transfer.ts
@@ -0,0 +1,67 @@
+import {
+    Connection,
+    Transaction,
+    SystemProgram,
+    sendAndConfirmTransaction,
+    PublicKey,
+    SendTransactionError,
+    LAMPORTS_PER_SOL,
+  } from "@solana/web3.js";
+  import "dotenv/config";
+import { getEnabledCategories } from "trace_events";
+  const { getKeypairFromEnvironment, airdropIfRequired } = require("@solana-developers/helpers");
+   
+  const suppliedToPubkey = process.argv[2] || null;
+   
+  if (!suppliedToPubkey) {
+    console.log(`Please provide a public key to send to`);
+    process.exit(1);
+  }
+   
+  const senderKeypair = getKeypairFromEnvironment("SECRET_KEY");
+   
+  console.log(`suppliedToPubkey: ${suppliedToPubkey}`);
+   
+  const toPubkey = new PublicKey(suppliedToPubkey);
+   
+  const connection = new Connection("https://api.devnet.solana.com", "confirmed");
+
+  
+    await airdropIfRequired(
+        connection,
+        toPubkey,
+        1 * LAMPORTS_PER_SOL,
+        0.5 * LAMPORTS_PER_SOL,
+    );
+
+  const bal = await connection.getBalance(senderKeypair.publicKey);
+   
+  console.log(
+    `✅ Loaded our own keypair, the destination public key, and connected to Solana ${bal}`, 
+  );
+   
+  const transaction = new Transaction();
+   
+  const LAMPORTS_TO_SEND = 5000;
+   
+  const sendSolInstruction = SystemProgram.transfer({
+    fromPubkey: senderKeypair.publicKey,
+    toPubkey,
+    lamports: LAMPORTS_TO_SEND,
+  });
+   
+  transaction.add(sendSolInstruction);
+   
+  try {
+    const signature = await sendAndConfirmTransaction(connection, transaction, [
+        senderKeypair,
+      ]);
+    
+        console.log(
+            `💸 Finished! Sent ${LAMPORTS_TO_SEND} to the address ${toPubkey}. `,
+        );
+        console.log(`Transaction signature is ${signature}!`);
+  } catch (error) {
+    const logs = await error.getLogs(); // Використовуємо await для асинхронного методу
+    console.log(logs);
+    }
\ No newline at end of file