<?php

namespace app\common\library;

use think\Db;

/**
 * 业务配置分组（系统配置页扩展）
 *
 * 背景：
 *   - 小程序、发布、分销三组配置的真源是 fa_fc_config，供小程序接口 / 分销服务直接读取；
 *   - FastAdmin 的「系统设置 → 系统配置」页面按 fa_config 分组渲染，原本无法展示 fc_config；
 *   - 本类把三组配置以「虚拟分组」的形式并入系统配置页，复用同一套表单与保存逻辑，
 *     值仍写入 fa_fc_config，不复制、不双写。
 *
 * 命名约定：表单字段统一以 fc_ 前缀，保存时映射回 fc_config 的原始 key。
 */
class FcConfig
{
    /**
     * 系统配置页的业务分组（仅保留小程序基础与支付安全配置，发布/会员/分销已独立至专属业务菜单）
     *
     * @return array
     */
    public static function groups()
    {
        $cfg = self::values();
        $pick = function ($key, $default = '') use ($cfg) {
            return (isset($cfg[$key]) && $cfg[$key] !== '') ? $cfg[$key] : $default;
        };

        return [
            'fc_miniapp' => [
                'name'   => 'fc_miniapp',
                'title'  => '小程序配置',
                'active' => false,
                'list'   => [
                    self::item('fc_base_appName', '小程序名称', 'string', $pick('base.appName', ''), '显示在小程序首页与分享卡片', 'required'),
                    self::item('fc_base_logo', '小程序LOGO', 'image', $pick('base.logo', ''), '留空时使用默认 LOGO'),
                    self::item('fc_base_servicePhone', '客服电话', 'string', $pick('base.servicePhone', ''), '展示在小程序「联系客服」入口'),
                    self::item('fc_base_shareTitle', '分享标题', 'string', $pick('base.shareTitle', ''), '留空则默认使用小程序名称'),
                    self::item('fc_base_aboutUs', '关于我们', 'text', $pick('base.aboutUs', ''), '展示在小程序「关于我们」页面'),
                    self::item('fc_wx_appid', '小程序 AppID', 'string', $pick('wx.appid', ''), '微信公众平台 → 开发管理 → 开发设置 → AppID（微信登录用）'),
                    self::item('fc_wx_secret', 'AppSecret', 'password', '', '仅服务端保存与调用；已配置时留空表示不修改（微信登录用）'),
                    self::item('fc_wx_tplAudit', '审核结果模板 ID', 'string', $pick('wx.tplAudit', ''), '小程序订阅消息：审核结果通知（公众平台 → 订阅消息）'),
                    self::item('fc_wx_tplTransfer', '提现到账模板 ID', 'string', $pick('wx.tplTransfer', ''), '小程序订阅消息：提现到账通知'),
                    self::item('fc_pay_passwordEnabled', '余额支付密码', 'switch', $pick('pay.payPasswordEnabled', '0'), '开启后，用户使用余额支付时需验证 6 位支付密码；默认关闭'),
                    self::item('fc_admin_userIds', '后台接口管理员 ID', 'string', $pick('admin.userIds', ''), '允许调用 /api/v1/admin/** 的用户 ID，多个用逗号分隔（留空 = 全部禁止）'),
                    self::item('fc_admin_mobiles', '后台接口管理员手机号', 'string', $pick('admin.mobiles', ''), '允许调用管理接口的手机号，多个用逗号分隔'),
                ],
            ],
        ];
    }

    /**
     * 获取「发布与浏览配置」当前值（供独立菜单 fc/publish 读取）
     *
     * @return array
     */
    public static function getPublishConfig()
    {
        $cfg = self::values();
        $pick = function ($key, $default = '') use ($cfg) {
            return (isset($cfg[$key]) && $cfg[$key] !== '') ? $cfg[$key] : $default;
        };

        $postMode = (string)$pick('post.mode', 'paid');
        if (!in_array($postMode, ['free', 'paid'], true)) {
            $postMode = 'paid';
        }

        $payViewPrice = round((float)$pick('fee.payView', 2), 2);
        $viewModeRaw = (string)$pick('fee.viewMode', '');
        if (!in_array($viewModeRaw, ['free', 'paid'], true)) {
            $viewMode = $payViewPrice <= 0 ? 'free' : 'paid';
        } else {
            $viewMode = $viewModeRaw;
        }

        return [
            'postMode'             => $postMode,
            'freeQuota'            => max(0, (int)$pick('post.freeQuota', 0)),
            'freeQuotaCycle'       => in_array($pick('post.freeQuotaCycle', 'day'), ['day', 'month', 'total'], true) ? $pick('post.freeQuotaCycle', 'day') : 'day',
            'singlePrice'          => max(0, round((float)$pick('post.singlePrice', 5), 2)),
            'viewMode'             => $viewMode,
            'payViewPrice'         => max(0, $payViewPrice),
            'callNormalDailyQuota' => max(0, (int)$pick('call.normalDailyQuota', 5)),
        ];
    }

    /**
     * 解析会员发布折扣数字（1 ~ 10，如 8 代表 8 折，10 代表不打折/原价）
     * 兼容纯数字（"8" / "8.5" / "10"）与历史中文格式（"8 折" / "8.5折"）
     *
     * @param mixed $raw 原始配置值
     * @return float 范围 0.1 ~ 10 的折扣值
     */
    public static function parseDiscountNum($raw)
    {
        if (is_numeric($raw)) {
            $num = round((float)$raw, 1);
            if ($num > 0 && $num <= 10) {
                return $num;
            }
        }
        $str = trim((string)$raw);
        if ($str === '原价' || $str === '不打折' || $str === '无折扣') {
            return 10.0;
        }
        if (preg_match('/^(\d+(?:\.\d+)?)\s*折?$/u', $str, $m)) {
            $num = round((float)$m[1], 1);
            if ($num > 0 && $num <= 10) {
                return $num;
            }
        }
        return 8.0;
    }

    /**
     * 将折扣数字格式化为展示文本（如 8 -> "8 折"，10 -> "原价"）
     *
     * @param float $discountNum 1~10 的折扣数字
     * @return string
     */
    public static function formatDiscountText($discountNum)
    {
        $num = round((float)$discountNum, 1);
        if ($num <= 0 || $num >= 10) {
            return '原价';
        }
        $clean = rtrim(rtrim(number_format($num, 1, '.', ''), '0'), '.');
        return $clean . ' 折';
    }

    /**
     * 根据后台实时配置与启用套餐，自动生成 100% 准确的会员权益文案列表（无需手写）
     *
     * @param int   $viewQuota   每日免费浏览完整信息条数（0 = 不限）
     * @param int   $callQuota   每日拨打电话次数（0 = 不限）
     * @param float $discountNum 超额单条发布折扣值（1~10）
     * @return array<int,string>
     */
    public static function buildAutoBenefits($viewQuota, $callQuota, $discountNum)
    {
        $list = [];

        // 1. 完整信息浏览特权
        if ((int)$viewQuota > 0) {
            $list[] = '每日免费浏览 ' . (int)$viewQuota . ' 条完整信息';
        } else {
            $list[] = '完整信息无限次免费浏览';
        }

        // 2. 拨打电话特权
        if ((int)$callQuota > 0) {
            $list[] = '每日可拨打 ' . (int)$callQuota . ' 次电话联系发布者';
        } else {
            $list[] = '拨打电话不限次数';
        }

        // 3. 套餐赠送免费发布额度特权（实时读取 fc_plan 启用套餐）
        try {
            $plans = Db::name('fc_plan')->where('enabled', 1)->order('sort asc')->select();
            $quotaParts = [];
            foreach ($plans as $p) {
                $q = (int)(isset($p['post_quota']) ? $p['post_quota'] : 0);
                if ($q > 0) {
                    $quotaParts[] = $p['name'] . '赠 ' . $q . ' 条';
                }
            }
            if (!empty($quotaParts)) {
                $list[] = '开通立赠免费发布额度（' . implode(' / ', $quotaParts) . '）';
            } else {
                $list[] = '会员有效期内尊享专属信息发布通道';
            }
        } catch (\Exception $e) {
            $list[] = '开通套餐立赠海量免费发布额度';
        }

        // 4. 超额单条发布折扣特权
        $num = round((float)$discountNum, 1);
        if ($num > 0 && $num < 10) {
            $clean = rtrim(rtrim(number_format($num, 1, '.', ''), '0'), '.');
            $list[] = '赠送额度用尽后，单条付费发布专享 ' . $clean . ' 折优惠';
        }

        // 5. 尊贵身份标识
        $list[] = '全站帖子详情与个人主页点亮 VIP 专属金标';

        return $list;
    }

    /**
     * 为单个会员套餐生成专属权益文案列表（直接读取套餐行权益字段）
     *
     * @param array $plan fc_plan 表行数据
     * @return array<int,string>
     */
    public static function buildPlanBenefits(array $plan)
    {
        $postQuota = isset($plan['post_quota']) ? max(0, (int)$plan['post_quota']) : 0;
        $viewQuota = isset($plan['view_quota']) ? max(0, (int)$plan['view_quota']) : 20;
        $callQuota = isset($plan['call_quota']) ? max(0, (int)$plan['call_quota']) : 30;
        $discount  = isset($plan['post_discount']) ? self::parseDiscountNum($plan['post_discount']) : 8.0;

        $list = [];

        if ($viewQuota > 0) {
            $list[] = '每日免费浏览 ' . $viewQuota . ' 条完整信息';
        } else {
            $list[] = '完整信息无限次免费浏览';
        }

        if ($callQuota > 0) {
            $list[] = '每日可拨打 ' . $callQuota . ' 次电话联系发布者';
        } else {
            $list[] = '拨打电话不限次数';
        }

        if ($postQuota > 0) {
            $list[] = '开通本套餐立赠 ' . $postQuota . ' 条免费信息发布额度';
        } else {
            $list[] = '会员有效期内尊享专属信息发布通道';
        }

        if ($discount > 0 && $discount < 10) {
            $clean = rtrim(rtrim(number_format($discount, 1, '.', ''), '0'), '.');
            $list[] = '赠送额度用尽后，单条付费发布专享 ' . $clean . ' 折优惠';
        }

        $list[] = '全站帖子详情与个人主页点亮 VIP 专属金标';
        return $list;
    }

    /**
     * 解析指定用户（或默认推荐套餐）对应的会员权益数据（真源：fc_plan 套餐表）
     *
     * @param array|null $ext fc_user_ext 行（可为空）
     * @return array{viewQuota:int,callQuota:int,postDiscountNum:float,postDiscount:string,benefits:array}
     */
    public static function resolveMemberBenefit($ext = null)
    {
        $plan = null;
        try {
            if (is_array($ext) && !empty($ext['member_level'])) {
                $plan = Db::name('fc_plan')
                    ->where('name', (string)$ext['member_level'])
                    ->find();
            }
            if (!$plan) {
                $plan = Db::name('fc_plan')
                    ->where('enabled', 1)
                    ->order('sort asc, id asc')
                    ->find();
            }
        } catch (\Exception $e) {
            $plan = null;
        }

        if ($plan) {
            $viewQuota = isset($plan['view_quota']) ? max(0, (int)$plan['view_quota']) : 20;
            $callQuota = isset($plan['call_quota']) ? max(0, (int)$plan['call_quota']) : 30;
            $discountNum = isset($plan['post_discount']) ? self::parseDiscountNum($plan['post_discount']) : 8.0;
            $postDiscount = self::formatDiscountText($discountNum);
            $benefitsArr = self::buildPlanBenefits($plan);
            return [
                'viewQuota'       => $viewQuota,
                'callQuota'       => $callQuota,
                'postDiscountNum' => $discountNum,
                'postDiscount'    => $postDiscount,
                'benefits'        => $benefitsArr,
            ];
        }

        // 兜底：若套餐表为空，从历史配置回退
        return self::getMemberBenefitConfig();
    }
    public static function getMemberBenefitConfig()
    {
        $cfg = self::values();
        $pick = function ($key, $default = '') use ($cfg) {
            return (isset($cfg[$key]) && $cfg[$key] !== '') ? $cfg[$key] : $default;
        };

        $benefitRaw = $pick('member.benefit', '');
        $benefitCfg = [];
        if ($benefitRaw) {
            $decoded = json_decode($benefitRaw, true);
            if (is_array($decoded)) {
                $benefitCfg = $decoded;
            }
        }

        $viewQuota = isset($benefitCfg['viewQuota']) ? max(0, (int)$benefitCfg['viewQuota']) : 20;
        $callQuota = isset($benefitCfg['callQuota']) ? max(0, (int)$benefitCfg['callQuota']) : 30;
        $rawDiscount = isset($benefitCfg['postDiscountNum'])
            ? $benefitCfg['postDiscountNum']
            : (isset($benefitCfg['postDiscount']) ? $benefitCfg['postDiscount'] : 8);
        $discountNum = self::parseDiscountNum($rawDiscount);
        $postDiscount = self::formatDiscountText($discountNum);
        $benefitsArr = self::buildAutoBenefits($viewQuota, $callQuota, $discountNum);

        return [
            'viewQuota'       => $viewQuota,
            'callQuota'       => $callQuota,
            'postDiscountNum' => $discountNum,
            'postDiscount'    => $postDiscount,
            'benefits'        => $benefitsArr,
        ];
    }

    /**
     * 获取「二级分销配置」当前值（供 fc/distrelation 页面读取）
     *
     * @return array
     */
    public static function getDistributionConfig()
    {
        $cfg = self::values();
        $pick = function ($key, $default = '') use ($cfg) {
            return (isset($cfg[$key]) && $cfg[$key] !== '') ? $cfg[$key] : $default;
        };

        return [
            'distEnabled'   => (int)$pick('dist.enabled', 1),
            'distLevel'     => (int)$pick('dist.level', 2),
            'distLevel1'    => round((float)$pick('dist.level1Rate', 20), 2),
            'distLevel2'    => round((float)$pick('dist.level2Rate', 10), 2),
            'distSettle'    => (string)$pick('dist.settleCycle', 'T+7'),
            'distMinAmount' => round((float)$pick('dist.minWithdraw', 50), 2),
        ];
    }

    /**
     * 保存业务配置（由系统配置页提交）
     *
     * @param array $row 系统配置页提交的 row 数组
     * @return void
     * @throws \Exception
     */
    public static function save(array $row)
    {
        $has = function ($prefix) use ($row) {
            foreach ($row as $key => $value) {
                if (strpos($key, $prefix) === 0) {
                    return true;
                }
            }
            return false;
        };

        if ($has('fc_base_')) {
            self::saveBase($row);
        }
        if ($has('fc_post_')) {
            self::savePublish($row);
        }
        if ($has('fc_member_')) {
            self::saveMember($row);
        }
        if ($has('fc_pay_')) {
            self::savePay($row);
        }
        if ($has('fc_dist_')) {
            self::saveDistribution($row);
        }
    }

    /**
     * 支付配置
     *
     * @param array $row
     * @return void
     */
    protected static function savePay(array $row)
    {
        $enabled = isset($row['fc_pay_passwordEnabled']) ? (int)$row['fc_pay_passwordEnabled'] : 0;
        self::put('pay.payPasswordEnabled', $enabled ? 1 : 0, 'pay', '余额支付密码开关（开启后余额支付需验证 6 位支付密码）');
    }

    /**
     * 小程序基础信息
     *
     * @param array $row
     * @return void
     * @throws \Exception
     */
    protected static function saveBase(array $row)
    {
        $appName = isset($row['fc_base_appName']) ? trim((string)$row['fc_base_appName']) : '';
        if ($appName === '') {
            throw new \Exception('小程序名称不能为空');
        }

        $values = [
            'base.appName'      => $appName,
            'base.logo'         => isset($row['fc_base_logo']) ? trim((string)$row['fc_base_logo']) : '',
            'base.servicePhone' => isset($row['fc_base_servicePhone']) ? trim((string)$row['fc_base_servicePhone']) : '',
            'base.shareTitle'   => isset($row['fc_base_shareTitle']) ? trim((string)$row['fc_base_shareTitle']) : '',
            'base.aboutUs'      => isset($row['fc_base_aboutUs']) ? trim((string)$row['fc_base_aboutUs']) : '',
        ];
        foreach ($values as $key => $value) {
            self::put($key, $value, 'base', '小程序配置');
        }

        // 兼容旧 ui.* 键：名称/LOGO 同步一份，避免旧数据在用户端回落时“复活”
        self::put('ui.siteName', $appName, 'ui', '站点名称');
        self::put('ui.logo', $values['base.logo'], 'ui', '自定义LOGO');

        // 微信登录参数（真源同为 fa_fc_config，由 WxMini 读取）：
        // AppSecret 不回显、留空表示不修改，避免表单提交把已保存的密钥冲成空串
        $wxAppid = isset($row['fc_wx_appid']) ? trim((string)$row['fc_wx_appid']) : '';
        if ($wxAppid !== '') {
            self::put('wx.appid', $wxAppid, 'wx', '小程序AppID（微信登录用）');
        }
        $wxSecret = isset($row['fc_wx_secret']) ? trim((string)$row['fc_wx_secret']) : '';
        if ($wxSecret !== '') {
            self::put('wx.secret', $wxSecret, 'wx', '小程序AppSecret（仅服务端持有，不下发前端）');
        }

        // 管理接口白名单（/api/v1/admin/**）：留空表示不允许任何小程序端账号调用
        if (array_key_exists('fc_admin_userIds', $row)) {
            self::put('admin.userIds', trim((string)$row['fc_admin_userIds']), 'admin', '管理接口允许的用户ID（逗号分隔）');
        }
        if (array_key_exists('fc_admin_mobiles', $row)) {
            self::put('admin.mobiles', trim((string)$row['fc_admin_mobiles']), 'admin', '管理接口允许的手机号（逗号分隔）');
        }

        // 订阅消息模板 ID
        if (array_key_exists('fc_wx_tplAudit', $row)) {
            self::put('wx.tplAudit', trim((string)$row['fc_wx_tplAudit']), 'wx', '审核结果订阅消息模板ID');
        }
        if (array_key_exists('fc_wx_tplTransfer', $row)) {
            self::put('wx.tplTransfer', trim((string)$row['fc_wx_tplTransfer']), 'wx', '提现到账订阅消息模板ID');
        }
    }

    /**
     * 保存发布模式、免费额度与联系方式浏览收费配置
     *
     * @param array $row
     * @return void
     * @throws \Exception
     */
    public static function savePublish(array $row)
    {
        $mode = isset($row['fc_post_mode']) ? trim((string)$row['fc_post_mode']) : 'free';
        if (!in_array($mode, ['free', 'paid'], true)) {
            throw new \Exception('发布模式只支持「免费发布」或「付费发布」');
        }

        $cycle = isset($row['fc_post_freeQuotaCycle']) ? trim((string)$row['fc_post_freeQuotaCycle']) : 'day';
        if (!in_array($cycle, ['day', 'month', 'total'], true)) {
            throw new \Exception('免费条数统计周期只支持「每日 / 每月 / 累计」');
        }

        $num = function ($key, $default) use ($row) {
            if (!isset($row[$key]) || $row[$key] === '') {
                return $default;
            }
            return round((float)$row[$key], 2);
        };
        $int = function ($key, $default) use ($row) {
            if (!isset($row[$key]) || $row[$key] === '') {
                return $default;
            }
            return (int)$row[$key];
        };

        $single = $num('fc_post_singlePrice', 5);
        $freeQuota = $int('fc_post_freeQuota', 0);

        if ($single < 0) {
            throw new \Exception('单条发布价格不能为负');
        }
        if ($freeQuota < 0) {
            throw new \Exception('免费发布条数不能为负');
        }

        $values = [
            'post.mode'           => $mode,
            'post.singlePrice'    => $single,
            'post.freeQuota'      => $freeQuota,
            'post.freeQuotaCycle' => $cycle,
        ];
        foreach ($values as $key => $value) {
            self::put($key, $value, 'post', '发布配置');
        }

        // 完整信息浏览规则（若表单同时传入则一并保存）
        if (isset($row['fc_fee_viewMode']) || isset($row['fc_fee_payView'])) {
            $viewMode = isset($row['fc_fee_viewMode']) ? trim((string)$row['fc_fee_viewMode']) : 'paid';
            if (!in_array($viewMode, ['free', 'paid'], true)) {
                $viewMode = 'paid';
            }
            $payView = $num('fc_fee_payView', 2);
            if ($payView < 0) {
                throw new \Exception('非会员单条解锁价格不能为负');
            }
            // 若选了完全免费公开，或单次价格设为 0，统一保障免费可看
            self::put('fee.viewMode', $viewMode, 'fee', '完整信息浏览模式：free免费公开 / paid付费或会员额度解锁');
            self::put('fee.payView', $viewMode === 'free' ? 0 : $payView, 'fee', '非会员单条解锁完整信息价格');
        }

        // 普通用户（非会员）每日拨打次数限制（会员拨打次数由各套餐 call_quota 控制）
        if (isset($row['fc_call_normalDailyQuota'])) {
            $normalQuota = max(0, $int('fc_call_normalDailyQuota', 5));
            self::put('call.normalDailyQuota', $normalQuota, 'call', '普通用户每日免费拨打次数上限（0表示不限制）');
        }
    }

    /**
     * 保存 VIP 会员通用特权配置（纯数值驱动，自动生成前端展示文案）
     *
     * @param array $row 提交的表单数组
     * @return void
     * @throws \Exception
     */
    public static function saveMember(array $row)
    {
        $viewQuota = isset($row['fc_member_viewQuota']) ? max(0, (int)$row['fc_member_viewQuota']) : 20;
        $callQuota = isset($row['fc_member_callQuota']) ? max(0, (int)$row['fc_member_callQuota']) : 30;
        $rawDiscount = isset($row['fc_member_postDiscountNum'])
            ? $row['fc_member_postDiscountNum']
            : (isset($row['fc_member_postDiscount']) ? $row['fc_member_postDiscount'] : 8);
        $discountNum = self::parseDiscountNum($rawDiscount);
        if ($discountNum <= 0 || $discountNum > 10) {
            throw new \Exception('发布折扣需在 0.1 ~ 10 之间（10 表示不打折）');
        }
        $postDiscount = self::formatDiscountText($discountNum);
        $benefits = self::buildAutoBenefits($viewQuota, $callQuota, $discountNum);

        $current = [];
        $raw = Db::name('fc_config')->where('key', 'member.benefit')->value('value');
        if ($raw) {
            $decoded = json_decode($raw, true);
            if (is_array($decoded)) {
                $current = $decoded;
            }
        }
        $current['viewQuota'] = $viewQuota;
        $current['callQuota'] = $callQuota;
        $current['postDiscountNum'] = $discountNum;
        $current['postDiscount'] = $postDiscount;
        $current['benefits'] = $benefits;

        self::put('member.benefit', $current, 'member', '会员权益配置');
    }

    /**
     * 分销参数保存
     *
     * @param array $row
     * @return void
     * @throws \Exception
     */
    public static function saveDistribution(array $row)
    {
        $enabled = isset($row['fc_dist_enabled']) ? (int)$row['fc_dist_enabled'] : 1;
        $level = isset($row['fc_dist_level']) ? (int)$row['fc_dist_level'] : 2;
        $rate1 = isset($row['fc_dist_level1Rate']) ? round((float)$row['fc_dist_level1Rate'], 2) : 20;
        $rate2 = isset($row['fc_dist_level2Rate']) ? round((float)$row['fc_dist_level2Rate'], 2) : 10;
        $settle = isset($row['fc_dist_settleCycle']) ? trim((string)$row['fc_dist_settleCycle']) : 'T+7';
        $minWithdraw = isset($row['fc_dist_minWithdraw']) ? round((float)$row['fc_dist_minWithdraw'], 2) : 50;

        if (!in_array($level, [1, 2], true)) {
            throw new \Exception('分佣层级只支持一级或二级');
        }
        if ($rate1 < 0 || $rate1 > 100 || $rate2 < 0 || $rate2 > 100) {
            throw new \Exception('分佣比例必须在 0-100 之间');
        }
        if ($minWithdraw < 0) {
            throw new \Exception('最低提现金额不能为负');
        }
        if ($settle === '') {
            $settle = 'T+7';
        }

        $values = [
            'dist.enabled'     => $enabled ? 1 : 0,
            'dist.level'       => $level,
            'dist.level1Rate'  => $rate1,
            'dist.level2Rate'  => $rate2,
            'dist.settleCycle' => $settle,
            'dist.minWithdraw' => $minWithdraw,
        ];
        foreach ($values as $key => $value) {
            self::put($key, $value, 'dist', '分销配置');
        }
    }

    /**
     * 读取 fc_config 全部配置
     *
     * @return array
     */
    protected static function values()
    {
        $result = [];
        try {
            foreach (Db::name('fc_config')->select() as $row) {
                $result[$row['key']] = $row['value'];
            }
        } catch (\Exception $e) {
            // 业务表尚未初始化时，系统配置页仍可正常打开（使用默认值）
        }
        return $result;
    }

    /**
     * 写入单项配置
     *
     * @param string $key
     * @param mixed  $value
     * @param string $group
     * @param string $remark
     * @return void
     */
    protected static function put($key, $value, $group, $remark)
    {
        $now = time();
        $value = is_scalar($value) || $value === null ? (string)$value : json_encode($value, JSON_UNESCAPED_UNICODE);
        $exist = Db::name('fc_config')->where('key', $key)->find();
        if ($exist) {
            Db::name('fc_config')->where('key', $key)->update([
                'value'      => $value,
                'group_key'  => $group,
                'remark'     => $remark,
                'updatetime' => $now,
            ]);
        } else {
            Db::name('fc_config')->insert([
                'key'        => $key,
                'value'      => $value,
                'group_key'  => $group,
                'remark'     => $remark,
                'createtime' => $now,
                'updatetime' => $now,
            ]);
        }
    }

    /**
     * 构造系统配置页的单个配置项
     *
     * @param string $name
     * @param string $title
     * @param string $type
     * @param mixed  $value
     * @param string $tip
     * @param string $rule
     * @param array  $content
     * @return array
     */
    protected static function item($name, $title, $type, $value, $tip = '', $rule = '', array $content = [])
    {
        return [
            'name'        => $name,
            'title'       => $title,
            'type'        => $type,
            'value'       => $value,
            'content'     => $content,
            'tip'         => $tip,
            'rule'        => $rule,
            'extend'      => '',
            'extend_html' => '',
            'setting'     => [],
            'visible'     => '',
            'id'          => 0,
        ];
    }
}