<?php

namespace app\common\service;

use app\common\model\user\User;
use app\common\model\vip\VipLevel;

class VipService
{
    /**
     * @notes 检查用户是否为有效VIP
     */
    public static function isVip(int $userId): bool
    {
        $user = User::findOrEmpty($userId);
        if ($user->isEmpty()) {
            return false;
        }
        return $user->is_vip == 1 && $user->vip_expire_time > time();
    }

    /**
     * @notes 获取用户当前VIP等级配置（未过期才返回）
     */
    public static function getUserVipLevel(int $userId): ?array
    {
        $user = User::findOrEmpty($userId);
        if ($user->isEmpty() || $user->is_vip != 1 || $user->vip_expire_time <= time()) {
            return null;
        }
        $level = VipLevel::where('level', $user->vip_level)->where('status', 1)->findOrEmpty();
        if ($level->isEmpty()) {
            return null;
        }
        return $level->toArray();
    }

    /**
     * @notes 检查VIP用户是否享有翻译免费权益
     */
    public static function hasTranslateFree(int $userId): bool
    {
        $level = self::getUserVipLevel($userId);
        return $level && !empty($level['translate_free']);
    }

    /**
     * @notes 检查VIP用户是否享有解锁帖子免费权益
     */
    public static function hasUnlockFree(int $userId): bool
    {
        $level = self::getUserVipLevel($userId);
        return $level && !empty($level['unlock_free']);
    }
}