Contractless-PHP-RPC/src/Transaction/MiscellaneousBuilder.php

<?php

declare(strict_types=1);

namespace Contractless\Rpc\Transaction;

use Contractless\Rpc\Crypto\CryptoInterface;
use Contractless\Rpc\Protocol\Address;
use Contractless\Rpc\Protocol\Binary;
use Contractless\Rpc\Protocol\RequestBuilder;
use Contractless\Rpc\Signing\SignatureProviderInterface;

final class MiscellaneousBuilder
{
    use SignsTransactions;

    public function __construct(
        CryptoInterface $crypto,
        SignatureProviderInterface $signer,
    )
    {
        $this->crypto = $crypto;
        $this->signer = $signer;
    }

    public function marketing(
        int $campaign,
        string $adType,
        string $keyword,
        string $displayed,
        int $impressions,
        int $clicks,
        int $impressionValue,
        int $clickValue,
        string $advertiser,
        int $fee,
        ?int $timestamp = null,
    ): SignedTransaction {
        $timestamp ??= time();
        $adType = Binary::fixedText($adType, 6, 'Ad type');
        $keyword = Binary::fixedText($keyword, 40, 'Marketing keyword');
        $displayed = Binary::fixedText($displayed, 100, 'Display location');
        $unsigned = [
            'txtype' => 5, 'time' => $timestamp, 'campaign' => $campaign,
            'ad_type' => $adType, 'keyword' => $keyword, 'displayed' => $displayed,
            'impression' => $impressions, 'click' => $clicks,
            'impression_value' => $impressionValue, 'click_value' => $clickValue,
            'advertiser' => $advertiser, 'txfee' => $fee,
        ];
        $binary = Binary::u8(5) . Binary::u32($timestamp) . Binary::u64($campaign)
            . $adType . $keyword . $displayed . Binary::u8($impressions)
            . Binary::u8($clicks) . Binary::u16($impressionValue)
            . Binary::u16($clickValue) . Address::toBytes($advertiser)
            . Binary::u64($fee);
        return $this->sign($unsigned, $binary);
    }

    public function collateralClaim(
        string $contractHash,
        string $address,
        int $fee,
        ?int $timestamp = null,
    ): SignedTransaction {
        $timestamp ??= time();
        $unsigned = [
            'txtype' => 9, 'time' => $timestamp, 'contract_hash' => $contractHash,
            'address' => $address, 'txfee' => $fee,
        ];
        $binary = Binary::u8(9) . Binary::u32($timestamp)
            . RequestBuilder::hash($contractHash, 'Loan contract hash')
            . Address::toBytes($address) . Binary::u64($fee);
        return $this->sign($unsigned, $binary);
    }

    public function loanPayment(
        int $amount,
        string $contractHash,
        string $address,
        int $tip,
        int $fee,
        ?int $timestamp = null,
    ): SignedTransaction {
        $timestamp ??= time();
        $unsigned = [
            'txtype' => 8, 'timestamp' => $timestamp, 'payback_amount' => $amount,
            'contract_hash' => $contractHash, 'address' => $address,
            'tip' => $tip, 'txfee' => $fee,
        ];
        $json = json_encode(
            $unsigned,
            JSON_THROW_ON_ERROR | JSON_UNESCAPED_SLASHES | JSON_PRESERVE_ZERO_FRACTION,
        );
        $hash = $this->crypto->skein256($json);
        $signature = $this->signer->sign($hash);
        $binary = Binary::u8(8) . Binary::u32($timestamp) . Binary::u64($amount)
            . RequestBuilder::hash($contractHash, 'Loan contract hash')
            . Address::toBytes($address) . Binary::u64($tip) . Binary::u64($fee)
            . $hash . $signature;
        return new SignedTransaction($binary, $signature, $json);
    }
}