<?php
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declare(strict_types=1);

namespace app\adminapi\validate\setting;

use app\adminapi\logic\setting\DesktopWorkstationLogic;
use app\common\validate\BaseValidate;

class DesktopWorkstationValidate extends BaseValidate
{
    protected $rule = [
        'enabled' => 'in:0,1|checkEnabledRequiresVersion',
        'force_update' => 'in:0,1',
        'latest_version' => 'max:20|checkVersion',
        'min_version' => 'max:20|checkVersion',
        'title' => 'max:80',
        'notes' => 'max:4000',
        'packages' => 'checkPackages',
    ];

    protected $message = [
        'enabled.in' => '启用状态不正确',
        'force_update.in' => '强制升级开关不正确',
        'latest_version.max' => '最新版本号过长',
        'min_version.max' => '最低版本号过长',
        'title.max' => '更新标题最多 80 个字符',
        'notes.max' => '更新说明最多 4000 个字符',
        'packages.array' => '安装包配置格式不正确',
    ];

    /**
     * @param mixed $value
     * @return bool|string
     */
    protected function checkVersion($value)
    {
        $value = trim((string) $value);
        if ($value === '') {
            return true;
        }
        if (DesktopWorkstationLogic::normalizeVersion($value) === '') {
            return '版本号须为 x.y.z 数字格式，例如 0.2.0';
        }
        return true;
    }

    /**
     * @param mixed $value
     * @param mixed $rule
     * @param array $data
     * @return bool|string
     */
    protected function checkEnabledRequiresVersion($value, $rule, array $data = [])
    {
        unset($rule);
        $enabled = in_array((string) $value, ['1', 'true'], true);
        $latest = trim((string) ($data['latest_version'] ?? ''));
        if ($enabled && $latest === '') {
            return '启用自动检测时请填写最新版本号';
        }
        return true;
    }

    /**
     * @param mixed $value
     * @param mixed $rule
     * @param array $data
     * @return bool|string
     */
    protected function checkPackages($value, $rule, array $data = [])
    {
        unset($rule);
        $enabled = (string) ($data['enabled'] ?? '0');
        $latest = trim((string) ($data['latest_version'] ?? ''));
        if (in_array($enabled, ['1', 'true'], true) && $latest === '') {
            return '启用自动检测时请填写最新版本号';
        }
        if ($value === '' || $value === null) {
            return true;
        }
        if (!is_array($value)) {
            return '安装包配置格式不正确';
        }
        foreach (DesktopWorkstationLogic::PLATFORMS as $key) {
            $row = $value[$key] ?? [];
            if ($row === '' || $row === null) {
                continue;
            }
            if (!is_array($row)) {
                return '安装包配置格式不正确';
            }
            $error = $this->checkPackageRow($key, $row, $data);
            if ($error !== true) {
                return $error;
            }
        }
        return true;
    }

    /**
     * @param array<string, mixed> $row
     * @param array<string, mixed> $data
     * @return bool|string
     */
    private function checkPackageRow(string $key, array $row, array $data)
    {
        unset($data);
        $url = trim((string) ($row['url'] ?? ''));
        $sha256 = strtolower(trim((string) ($row['sha256'] ?? '')));
        $filename = trim((string) ($row['filename'] ?? ''));
        $type = strtolower(trim((string) ($row['type'] ?? 'archive')));
        $size = $row['size'] ?? 0;
        $labels = [
            'windows_x64' => 'Windows 64 位',
            'macos_arm64' => 'macOS Apple 芯片',
            'macos_x64' => 'macOS Intel',
        ];
        $label = $labels[$key] ?? $key;
        if (!in_array($type, DesktopWorkstationLogic::PACKAGE_TYPES, true)) {
            return $label . '安装包类型不受支持';
        }
        if ($type === 'inno_setup' && $key !== 'windows_x64') {
            return $label . '不能使用 Windows Inno Setup 安装包';
        }
        if ($type === 'inno_setup' && $filename !== '' && !str_ends_with(strtolower($filename), '.exe')) {
            return $label . ' Inno Setup 文件名必须以 .exe 结尾';
        }
        if ($type === 'inno_setup' && preg_match('#^http://#i', $url)) {
            return $label . '自动安装程序必须使用 HTTPS 下载地址';
        }
        if ($url !== '' && !$this->isAllowedPackageUrl($url)) {
            return $label . '安装包地址必须是 http(s) 链接或站内 uploads 路径';
        }
        if ($sha256 !== '' && !preg_match('/^[a-f0-9]{64}$/', $sha256)) {
            return $label . ' SHA-256 须为 64 位十六进制';
        }
        if ($url !== '' && $sha256 === '' && preg_match('#^https?://#i', $url)) {
            return $label . '使用外部下载地址时必须填写 SHA-256，避免安装被篡改的文件';
        }
        if ($filename !== '' && strlen($filename) > 180) {
            return $label . '文件名过长';
        }
        if ($size !== '' && $size !== null && (!is_numeric($size) || (int) $size < 0)) {
            return $label . '文件大小不正确';
        }
        return true;
    }

    private function isAllowedPackageUrl(string $url): bool
    {
        if (preg_match('#^https?://#i', $url)) {
            return filter_var($url, FILTER_VALIDATE_URL) !== false;
        }
        return (bool) preg_match('#^(uploads|resource)/#', str_replace('\\', '/', $url));
    }
}