feat: autotransfer

app/Services/Chain/TronDriver.php

@@ -28,8 +28,20 @@ class TronDriver implements ChainDriver
 
         $derived = Bip44::derive($mnemonic, $this->path($index));
         $from = TronAddress::fromUncompressedPublicKey($derived['public_key_uncompressed']);
-        $sun = $this->toSun($amount);
 
+        return $this->sendNativeWithPrivateKey($derived['private_key'], $from, $to, $amount);
+    }
+
+    /**
+     * Send TRX using a raw private key (fee top-up wallet).
+     */
+    public function sendNativeWithPrivateKey(string $privateKeyHex, string $from, string $to, string $amount): string
+    {
+        if (! $this->isValidAddress($from) || ! $this->isValidAddress($to)) {
+            throw new RuntimeException('Invalid Tron address');
+        }
+
+        $sun = $this->toSun($amount);
         $tx = $this->post('/wallet/createtransaction', [
             'owner_address' => $from,
             'to_address' => $to,
@@ -37,7 +49,19 @@ class TronDriver implements ChainDriver
             'visible' => true,
         ]);
 
-        return $this->signAndBroadcast($tx, $derived['private_key']);
+        return $this->signAndBroadcast($tx, $privateKeyHex);
+    }
+
+    public static function addressFromPrivateKey(string $privateKeyHex): string
+    {
+        $privateKeyHex = strtolower(trim($privateKeyHex));
+        if (str_starts_with($privateKeyHex, '0x')) {
+            $privateKeyHex = substr($privateKeyHex, 2);
+        }
+        $ec = new \Elliptic\EC('secp256k1');
+        $pub = $ec->keyFromPrivate($privateKeyHex)->getPublic(false, 'hex');
+
+        return TronAddress::fromUncompressedPublicKey($pub);
     }
 
     public function sendToken(string $mnemonic, int $index, string $to, string $amount, string $contract): string