<?php

declare(strict_types=1);

namespace MageSail\Magesail\Block\Adminhtml;

use Magento\Backend\Block\Template;
use Magento\Backend\Block\Template\Context;

/**
 * Exposes composer.json metadata for the About page.
 */
class About extends Template
{
    private const COMPOSER_REL = 'composer.json';

    private const COPYRIGHT_NOTICE = 'Copyright (C) 2026  LIVEPORT P2P SOLUTIONS PVT. LTD.';

    /** @var array<string, mixed>|null */
    private ?array $composerData = null;

    public function __construct(
        Context $context,
        array $data = []
    ) {
        parent::__construct($context, $data);
    }

    /**
     * @return array{name: string, version: string, description: string, license: string}
     */
    public function getPackageInfo(): array
    {
        $data = $this->loadComposer();
        $license = $data['license'] ?? '';
        if (\is_array($license)) {
            $license = implode(', ', $license);
        }
        return [
            'name' => (string) ($data['name'] ?? 'magesail/magesail'),
            'version' => (string) ($data['version'] ?? ''),
            'description' => (string) ($data['description'] ?? ''),
            'license' => (string) $license,
        ];
    }

    /**
     * @return array<string, mixed>
     */
    private function loadComposer(): array
    {
        if ($this->composerData !== null) {
            return $this->composerData;
        }
        $path = dirname(__DIR__, 2) . '/' . self::COMPOSER_REL;
        if (!\is_readable($path)) {
            $this->composerData = [];
            return $this->composerData;
        }
        $raw = file_get_contents($path);
        if ($raw === false) {
            $this->composerData = [];
            return $this->composerData;
        }
        try {
            /** @var array<string, mixed> $decoded */
            $decoded = json_decode($raw, true, 512, JSON_THROW_ON_ERROR);
            $this->composerData = $decoded;
        } catch (\JsonException) {
            $this->composerData = [];
        }
        return $this->composerData;
    }

    public function getCopyrightNotice(): string
    {
        return self::COPYRIGHT_NOTICE;
    }
}