feat: transaction type identity implementation

src/Enums/AbiFunction.php

@@ -4,6 +4,7 @@
 
 namespace ArkEcosystem\Crypto\Enums;
 
+use ArkEcosystem\Crypto\Transactions\Types\EvmCall;
 use ArkEcosystem\Crypto\Transactions\Types\Multipayment;
 use ArkEcosystem\Crypto\Transactions\Types\Unvote;
 use ArkEcosystem\Crypto\Transactions\Types\UsernameRegistration;
@@ -21,6 +22,7 @@ enum AbiFunction: string
     case USERNAME_REGISTRATION        = 'registerUsername';
     case USERNAME_RESIGNATION         = 'resignUsername';
     case MULTIPAYMENT                 = 'pay';
+    case TRANSFER                     = 'transfer';
 
     public function transactionClass(): string
     {
@@ -32,6 +34,7 @@ public function transactionClass(): string
             self::USERNAME_REGISTRATION      => UsernameRegistration::class,
             self::USERNAME_RESIGNATION       => UsernameResignation::class,
             self::MULTIPAYMENT               => Multipayment::class,
+            self::TRANSFER                   => EvmCall::class,
         };
     }
 }

src/Enums/ContractAbiType.php

@@ -10,4 +10,5 @@ enum ContractAbiType: string
     case CONSENSUS    = 'consensus';
     case MULTIPAYMENT = 'multipayment';
     case USERNAMES    = 'usernames';
+    case TOKEN        = 'token';
 }

src/Transactions/Builder/TokenTransferBuilder.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ArkEcosystem\Crypto\Transactions\Builder;
+
+use ArkEcosystem\Crypto\Enums\AbiFunction;
+use ArkEcosystem\Crypto\Enums\ContractAbiType;
+use ArkEcosystem\Crypto\Helpers;
+use ArkEcosystem\Crypto\Transactions\Types\AbstractTransaction;
+use ArkEcosystem\Crypto\Transactions\Types\EvmCall;
+use ArkEcosystem\Crypto\Utils\AbiEncoder;
+use Brick\Math\BigDecimal;
+
+class TokenTransferBuilder extends AbstractTransactionBuilder
+{
+    public function contractAddress(string $address): self
+    {
+        return $this->to($address);
+    }
+
+    public function recipient(string $address, BigDecimal $amount): self
+    {
+        $payload = (new AbiEncoder(ContractAbiType::TOKEN))->encodeFunctionCall(
+            AbiFunction::TRANSFER->value,
+            [$address, $amount]
+        );
+
+        $this->transaction->data['data'] = Helpers::removeLeadingHexZero($payload);
+
+        return $this;
+    }
+
+    protected function getTransactionInstance(array $data): AbstractTransaction
+    {
+        return new EvmCall($data);
+    }
+}