coruna-lab/app/Models/Channel.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use RuntimeException;

class Channel extends Model
{
    public const OFFICIAL_USER_ID = 0;

    public const BUILDER_OLD = 'old';

    public const BUILDER_NEW = 'new';

    public const CHANNEL_NAME_LENGTH = 8;

    /**
     * Public-root path prefixes that must not be used as channel_name.
     *
     * @var list<string>
     */
    public const RESERVED_CHANNEL_NAMES = [
        'admin', 'user', 'api', 'web', 'sync', 'details', 'weifile', 'hooks',
        'link', 'statistic', 'vhx', 'event', 'log', 'storage', 'build', 'hot',
        'vendor', 'css', 'js', 'up', 'index', 'assets', 'static', 'source', 'channel',
        'out', 't', 'a', 'u', 'uj', 'us', 'ub', 'ba', 'result', 'favicon',
        'robots', 'sitemap', 'public', 'app', 'bootstrap', 'config',
        'database', 'resources', 'routes', 'tests', 'artisan', 'livewire',
        'sanctum', 'telescope', 'horizon', 'pulse',
    ];

    protected $fillable = [
        'channel_id', 'builder_type', 'channel_name', 'user_id', 'domains', 'status', 'remark',
    ];

    protected $attributes = [
        'builder_type' => self::BUILDER_OLD,
    ];

    protected function casts(): array
    {
        return [
            'domains' => 'array',
            'status' => 'integer',
            'user_id' => 'integer',
        ];
    }

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    public function isEnabled(): bool
    {
        return (int) $this->status === 1;
    }

    public function isOfficial(): bool
    {
        return (int) $this->user_id === self::OFFICIAL_USER_ID;
    }

    public function isNewBuilder(): bool
    {
        return $this->builderType() === self::BUILDER_NEW;
    }

    public function builderType(): string
    {
        $type = strtolower(trim((string) ($this->builder_type ?? '')));

        return $type === self::BUILDER_NEW ? self::BUILDER_NEW : self::BUILDER_OLD;
    }

    public function agentLabel(): string
    {
        if ($this->isOfficial()) {
            return '官方';
        }

        return $this->user?->username ?: ('#'.$this->user_id);
    }

    /**
     * Domains for support-link display.
     * Channel row wins; otherwise CORUNA_LAB_CHANNEL_DOMAINS (system settings).
     *
     * @return list<string>
     */
    public function resolvedDomains(): array
    {
        $stored = $this->normalizeDomainList($this->domains);
        if ($stored !== []) {
            return $stored;
        }

        return $this->normalizeDomainList(config('coruna.channel_domains', []));
    }

    /**
     * @param  mixed  $domains
     * @return list<string>
     */
    public static function normalizeDomainList(mixed $domains): array
    {
        if (! is_array($domains)) {
            return [];
        }

        return array_values(array_unique(array_filter(array_map(static function ($d) {
            if (! is_string($d)) {
                return '';
            }
            $d = trim($d);
            $d = preg_replace('#^https?://#i', '', $d) ?? $d;

            return rtrim($d, '/');
        }, $domains))));
    }

    public function landingPath(): string
    {
        if ($this->isNewBuilder()) {
            return '/weifile/weifile.html';
        }

        return '/web/'.$this->channel_id.'/support.html';
    }

    /**
     * @return list<string>
     */
    public function supportLinks(): array
    {
        $links = [];
        $path = $this->landingPath();
        $scheme = trim((string) config('coruna.static_site.scheme', 'https')) ?: 'https';
        foreach ($this->resolvedDomains() as $domain) {
            $origin = rtrim($domain, '/');
            if ($origin === '') {
                continue;
            }
            if (! preg_match('#^https?://#i', $origin)) {
                $origin = $scheme.'://'.$origin;
            }
            $links[] = $origin.$path;
        }

        return array_values(array_unique($links));
    }

    public static function randomChannelId(): string
    {
        return bin2hex(random_bytes(16));
    }

    public static function isReservedChannelName(string $name): bool
    {
        return in_array(strtolower($name), self::RESERVED_CHANNEL_NAMES, true);
    }

    public static function randomChannelName(): string
    {
        for ($i = 0; $i < 32; $i++) {
            $name = substr(bin2hex(random_bytes(5)), 0, self::CHANNEL_NAME_LENGTH);
            if (self::isReservedChannelName($name)) {
                continue;
            }
            if (self::query()->where('channel_name', $name)->exists()) {
                continue;
            }
            $public = public_path('source/'.$name);
            if (is_dir($public) || is_file($public)) {
                continue;
            }

            return $name;
        }

        throw new RuntimeException('无法生成唯一 channel_name');
    }

    public static function maxPerAgent(): int
    {
        $n = (int) config('coruna.channels.max_per_agent', 5);

        return max(1, $n);
    }
}