<?php

declare(strict_types=1);

namespace Mod\Chain\Services;

use Illuminate\Support\Facades\Http;

/**
 *   $wallet = app(WalletRpc::class);
 *   $wallet->registerAlias('myname', $address, 'v=lthn1;type=user');
 */
class WalletRpc implements \Mod\Chain\Contracts\ChainWallet, \Mod\Chain\Contracts\HealthCheckable
{
    private string $endpoint;

    public function __construct()
    {
        $this->endpoint = config('chain.wallet_rpc', 'http://127.0.0.1:46944/json_rpc');
    }

    /**
     *   $result = $wallet->getAddress();
     *   // 'iTHNHN11xMe...'
     */
    public function getAddress(): string
    {
        $result = $this->call('getaddress');

        return $result['address'] ?? '';
    }

    /**
     *   $balance = $wallet->getBalance();
     *   // ['balance' => 1000000000000, 'unlocked_balance' => 1000000000000]
     */
    public function getBalance(): array
    {
        return $this->call('getbalance');
    }

    /**
     *   $result = $wallet->registerAlias('myname', $address, 'v=lthn1;type=user');
     *   // ['status' => 'OK', 'tx_id' => 'abc123...']
     */
    public function registerAlias(string $alias, string $address, string $comment = ''): array
    {
        return $this->call('register_alias', [
            'al' => [
                'alias' => strtolower(trim($alias)),
                'address' => $address,
                'comment' => $comment,
            ],
        ]);
    }

    /**
     *   $result = $wallet->updateAlias('myname', $address, 'v=lthn1;type=gateway');
     */
    public function updateAlias(string $alias, string $address, string $comment = ''): array
    {
        return $this->call('update_alias', [
            'al' => [
                'alias' => strtolower(trim($alias)),
                'address' => $address,
                'comment' => $comment,
            ],
        ]);
    }

    /**
     *   $result = $wallet->call('get_recent_txs_and_info', [...]);
     */
    public function call(string $method, array $params = []): array
    {
        $payload = [
            'jsonrpc' => '2.0',
            'id' => '0',
            'method' => $method,
        ];

        if ($params) {
            $payload['params'] = $params;
        }

        try {
            $response = Http::timeout(15)
                ->accept('application/json')
                ->post($this->endpoint, $payload);
        } catch (\Throwable $e) {
            return ['error' => 'Wallet RPC unreachable'];
        }

        if ($response->failed()) {
            return ['error' => 'Wallet RPC unreachable'];
        }

        $data = $response->json();

        return $data['result'] ?? $data['error'] ?? [];
    }

    public function healthCheck(): array
    {
        try {
            $balance = $this->getBalance();

            if (isset($balance['error'])) {
                return ['status' => 'unhealthy', 'detail' => 'Unreachable'];
            }

            return ['status' => 'healthy', 'detail' => 'Connected'];
        } catch (\Throwable $e) {
            return ['status' => 'unhealthy', 'detail' => 'Unreachable'];
        }
    }
}