<?php

namespace bizHd\homePageConfig\classes;

use bizHd\goods\classes\GoodsClass;
use bizHd\goods\classes\GoodsCategoryClass;
use bizHd\goods\classes\GoodsUseCaseClass;
use common\components\imgUtil;
use common\components\util;
use Yii;

/**
 * 门店首页其余模块配置（金刚区/秒杀/团购/热门/上新/下拉商品）
 * 数据按 mainId 存 Redis，供 hdApp 配置、mallApp 读取展示。
 */
class HomePageModuleClass
{
    const REDIS_NAV_GRID = '_home_page_config_nav_grid';
    const REDIS_SECKILL = '_home_page_config_seckill';
    const REDIS_GROUP_BUY = '_home_page_config_group_buy';
    const REDIS_HOT = '_home_page_config_hot';
    const REDIS_NEW = '_home_page_config_new';
    const REDIS_PULL_GOODS = '_home_page_config_pull_goods';

    const NAV_OSS_ROOT = 'uploads_home_nav';
    const MAX_NAV_COUNT = 20;

    /** 关联：商品 */
    const LINK_GOODS = 2;
    /** 关联：分类 */
    const LINK_CATEGORY = 3;
    /** 关联：场景 */
    const LINK_USE_CASE = 4;

    /** 排序：按商品排序 */
    const SORT_PRODUCT = 1;
    /** 排序：按销量 */
    const SORT_SALES = 2;
    /** 排序：按上新时间 */
    const SORT_NEW = 3;

    /** 排列规则合法取值：1排1列/1排2列/1排3列 */
    const LAYOUT_COLS_OPTIONS = [1, 2, 3];
    /** 排列规则默认值 */
    const DEFAULT_LAYOUT_COLS = 3;
    /** 首页展示商品解析默认条数上限 */
    const DISPLAY_GOODS_LIMIT = 20;

    public static function redisKey($mainId, $suffix)
    {
        return intval($mainId) . $suffix;
    }

    public static function getJson($mainId, $suffix)
    {
        $raw = Yii::$app->redis->executeCommand('GET', [self::redisKey($mainId, $suffix)]);
        if (empty($raw)) {
            return [];
        }
        $data = json_decode($raw, true);
        return is_array($data) ? $data : [];
    }

    public static function setJson($mainId, $suffix, $payload)
    {
        Yii::$app->redis->executeCommand('SET', [
            self::redisKey($mainId, $suffix),
            json_encode($payload, JSON_UNESCAPED_UNICODE),
        ]);
    }

    public static function decodeList($raw)
    {
        if (is_string($raw)) {
            $decoded = json_decode($raw, true);
            return is_array($decoded) ? $decoded : [];
        }
        return is_array($raw) ? $raw : [];
    }

    // -------------------- 金刚区 --------------------

    public static function getNavGrid($mainId)
    {
        $mainId = intval($mainId);
        if ($mainId <= 0) {
            util::fail('无效门店');
        }
        $saved = self::getJson($mainId, self::REDIS_NAV_GRID);
        $cols = isset($saved['cols']) ? intval($saved['cols']) : 5;
        if (!in_array($cols, [4, 5], true)) {
            $cols = 5;
        }
        $list = [];
        foreach (self::decodeList($saved['list'] ?? []) as $item) {
            if (!is_array($item)) {
                continue;
            }
            $list[] = [
                'id' => strval($item['id'] ?? ''),
                'name' => strval($item['name'] ?? ''),
                'icon' => strval($item['icon'] ?? ''),
                'iconType' => intval($item['iconType'] ?? 1),
                'enabled' => !empty($item['enabled']) ? 1 : 0,
                'type' => intval($item['type'] ?? self::LINK_CATEGORY),
                'value' => strval($item['value'] ?? ''),
            ];
        }
        return [
            'enabled' => HomePageConfigClass::getModuleEnabled($mainId, 'navGrid'),
            'cols' => $cols,
            'list' => $list,
        ];
    }

    public static function saveNavGrid($mainId, $data)
    {
        $mainId = intval($mainId);
        if ($mainId <= 0) {
            util::fail('无效门店');
        }
        $enabled = !empty($data['enabled']) ? 1 : 0;
        $cols = isset($data['cols']) ? intval($data['cols']) : 5;
        if (!in_array($cols, [4, 5], true)) {
            util::fail('排列规则无效');
        }
        $rawList = self::decodeList($data['list'] ?? []);
        if (count($rawList) > self::MAX_NAV_COUNT) {
            util::fail('最多可配置' . self::MAX_NAV_COUNT . '个导航');
        }
        $list = [];
        foreach ($rawList as $index => $item) {
            if (!is_array($item)) {
                continue;
            }
            $name = trim(strval($item['name'] ?? ''));
            $icon = trim(strval($item['icon'] ?? ''));
            $type = intval($item['type'] ?? 0);
            $value = trim(strval($item['value'] ?? ''));
            $no = $index + 1;
            if ($name === '' || $icon === '' || $value === '') {
                util::fail("请完善第{$no}个导航项");
            }
            if (!in_array($type, [self::LINK_CATEGORY, self::LINK_USE_CASE], true)) {
                util::fail("第{$no}个导航关联类型无效");
            }
            $list[] = [
                'id' => strval($item['id'] ?? ('nav_' . ($index + 1))),
                'name' => mb_substr($name, 0, 20),
                'icon' => $icon,
                'iconType' => intval($item['iconType'] ?? 1) === 2 ? 2 : 1,
                'enabled' => !empty($item['enabled']) ? 1 : 0,
                'type' => $type,
                'value' => $value,
            ];
        }
        self::setJson($mainId, self::REDIS_NAV_GRID, ['cols' => $cols, 'list' => $list]);
        HomePageConfigClass::updateModuleEnabled($mainId, 'navGrid', $enabled);
        return true;
    }

    // -------------------- 秒杀 --------------------

    public static function getSeckill($mainId, $refreshStock = true)
    {
        $mainId = intval($mainId);
        if ($mainId <= 0) {
            util::fail('无效门店');
        }
        $saved = self::getJson($mainId, self::REDIS_SECKILL);
        $data = self::normalizeActivityBase($saved);
        $data['enabled'] = HomePageConfigClass::getModuleEnabled($mainId, 'seckill');
        $data['goods'] = self::normalizeSeckillGoods($saved['goods'] ?? [], $mainId, $refreshStock);
        // 按已添加商品数量 + 展开开关动态推导列数与展示数量（不依赖商家手动配置）
        $layout = self::resolveActivityLayout(count($data['goods']), $data['expand']);
        $data['layoutCols'] = $layout['layoutCols'];
        $data['displayCount'] = $layout['displayCount'];
        $data['status'] = self::calcActivityStatus($data['startTime'], $data['endTime'], $data['enabled']);
        return $data;
    }

    public static function saveSeckill($mainId, $data)
    {
        $mainId = intval($mainId);
        if ($mainId <= 0) {
            util::fail('无效门店');
        }
        $base = self::validateActivityBase($data);
        $goods = self::validateSeckillGoods($mainId, self::decodeList($data['goods'] ?? []));
        self::setJson($mainId, self::REDIS_SECKILL, array_merge($base, ['goods' => $goods]));
        HomePageConfigClass::updateModuleEnabled($mainId, 'seckill', !empty($data['enabled']) ? 1 : 0);
        return true;
    }

    /**
     * 校验并规范化秒杀商品；秒杀库存不得超过实际商品库存
     */
    public static function validateSeckillGoods($mainId, $rawList)
    {
        $list = [];
        foreach ($rawList as $index => $item) {
            if (!is_array($item)) {
                continue;
            }
            $no = $index + 1;
            $goodsId = intval($item['goodsId'] ?? 0);
            $price = floatval($item['price'] ?? 0);
            $stock = intval($item['stock'] ?? 0);
            $limit = intval($item['limit'] ?? 0);
            if ($goodsId <= 0) {
                util::fail("请选择第{$no}个秒杀商品");
            }
            if ($price <= 0) {
                util::fail("请填写第{$no}个秒杀价格");
            }
            if ($stock <= 0) {
                util::fail("请填写第{$no}个秒杀库存");
            }
            if ($limit <= 0) {
                util::fail("请填写第{$no}个单人限购");
            }
            $goods = GoodsClass::getById($goodsId, true);
            if (empty($goods) || intval($goods->mainId ?? 0) !== intval($mainId)) {
                util::fail("第{$no}个秒杀商品无效");
            }
            $realStock = intval($goods->stock ?? 0);
            // 秒杀库存不得超过实际库存
            if ($stock > $realStock) {
                util::fail("第{$no}个秒杀库存不能超过商品实际库存({$realStock})");
            }
            $status = !empty($item['status']) ? 1 : 0;
            // 实际库存已低于秒杀库存：自动下架该秒杀商品
            if ($realStock < $stock) {
                $status = 0;
            }
            $list[] = [
                'goodsId' => $goodsId,
                'price' => round($price, 2),
                'stock' => $stock,
                'limit' => $limit,
                'status' => $status,
                'name' => strval($goods->name ?? ($item['name'] ?? '')),
                'cover' => strval($goods->shortCover ?? ($goods->cover ?? ($item['cover'] ?? ''))),
                'originPrice' => floatval($goods->price ?? ($item['originPrice'] ?? 0)),
            ];
        }
        return $list;
    }

    /**
     * 读取时刷新秒杀商品状态：实际库存低于秒杀库存则下架，并回写 Redis
     */
    public static function normalizeSeckillGoods($rawList, $mainId, $refreshStock = true)
    {
        $list = [];
        $changed = false;
        foreach (self::decodeList($rawList) as $item) {
            if (!is_array($item) || empty($item['goodsId'])) {
                continue;
            }
            $row = [
                'goodsId' => intval($item['goodsId']),
                'price' => floatval($item['price'] ?? 0),
                'stock' => intval($item['stock'] ?? 0),
                'limit' => intval($item['limit'] ?? 0),
                'status' => !empty($item['status']) ? 1 : 0,
                'name' => strval($item['name'] ?? ''),
                'cover' => strval($item['cover'] ?? ''),
                'originPrice' => floatval($item['originPrice'] ?? 0),
                'realStock' => intval($item['stock'] ?? 0),
            ];
            if ($refreshStock) {
                $goods = GoodsClass::getById($row['goodsId'], true);
                if (!empty($goods) && intval($goods->mainId ?? 0) === intval($mainId)) {
                    $realStock = intval($goods->stock ?? 0);
                    $row['realStock'] = $realStock;
                    $row['name'] = strval($goods->name ?? $row['name']);
                    $row['cover'] = strval($goods->shortCover ?? ($goods->cover ?? $row['cover']));
                    $row['originPrice'] = floatval($goods->price ?? $row['originPrice']);
                    if ($realStock < $row['stock'] && $row['status'] == 1) {
                        $row['status'] = 0;
                        $changed = true;
                    }
                }
            }
            $list[] = $row;
        }
        if ($changed && $refreshStock) {
            $saved = self::getJson($mainId, self::REDIS_SECKILL);
            $persist = [];
            foreach ($list as $g) {
                $persist[] = [
                    'goodsId' => $g['goodsId'],
                    'price' => $g['price'],
                    'stock' => $g['stock'],
                    'limit' => $g['limit'],
                    'status' => $g['status'],
                    'name' => $g['name'],
                    'cover' => $g['cover'],
                    'originPrice' => $g['originPrice'],
                ];
            }
            $saved['goods'] = $persist;
            self::setJson($mainId, self::REDIS_SECKILL, $saved);
        }
        return $list;
    }

    // -------------------- 团购 --------------------

    public static function getGroupBuy($mainId, $refreshStock = true)
    {
        $mainId = intval($mainId);
        if ($mainId <= 0) {
            util::fail('无效门店');
        }
        $saved = self::getJson($mainId, self::REDIS_GROUP_BUY);
        $data = self::normalizeActivityBase($saved);
        $data['enabled'] = HomePageConfigClass::getModuleEnabled($mainId, 'groupBuy');
        $data['goods'] = self::normalizeGroupBuyGoods($saved['goods'] ?? [], $mainId, $refreshStock);
        // 按已添加商品数量 + 展开开关动态推导列数与展示数量（不依赖商家手动配置）
        $layout = self::resolveActivityLayout(count($data['goods']), $data['expand']);
        $data['layoutCols'] = $layout['layoutCols'];
        $data['displayCount'] = $layout['displayCount'];
        $data['status'] = self::calcActivityStatus($data['startTime'], $data['endTime'], $data['enabled']);
        return $data;
    }

    public static function saveGroupBuy($mainId, $data)
    {
        $mainId = intval($mainId);
        if ($mainId <= 0) {
            util::fail('无效门店');
        }
        $base = self::validateActivityBase($data);
        $goods = self::validateGroupBuyGoods($mainId, self::decodeList($data['goods'] ?? []));
        self::setJson($mainId, self::REDIS_GROUP_BUY, array_merge($base, ['goods' => $goods]));
        HomePageConfigClass::updateModuleEnabled($mainId, 'groupBuy', !empty($data['enabled']) ? 1 : 0);
        return true;
    }

    public static function validateGroupBuyGoods($mainId, $rawList)
    {
        $list = [];
        foreach ($rawList as $index => $item) {
            if (!is_array($item)) {
                continue;
            }
            $no = $index + 1;
            $goodsId = intval($item['goodsId'] ?? 0);
            $price = floatval($item['price'] ?? 0);
            $stock = intval($item['stock'] ?? 0);
            $limit = intval($item['limit'] ?? 0);
            $groupSize = intval($item['groupSize'] ?? 3);
            if (!in_array($groupSize, [2, 3, 5], true)) {
                util::fail("第{$no}个成团人数无效");
            }
            if ($goodsId <= 0 || $price <= 0 || $stock <= 0 || $limit <= 0) {
                util::fail("请完善第{$no}个团购商品");
            }
            $goods = GoodsClass::getById($goodsId, true);
            if (empty($goods) || intval($goods->mainId ?? 0) !== intval($mainId)) {
                util::fail("第{$no}个团购商品无效");
            }
            $realStock = intval($goods->stock ?? 0);
            if ($stock > $realStock) {
                util::fail("第{$no}个团购库存不能超过商品实际库存({$realStock})");
            }
            $virtualGroup = !empty($item['virtualGroup']) ? 1 : 0;
            $virtualMinutes = intval($item['virtualMinutes'] ?? 0);
            if ($virtualGroup && $virtualMinutes <= 0) {
                util::fail("请填写第{$no}个虚拟成团时间");
            }
            $list[] = [
                'goodsId' => $goodsId,
                'price' => round($price, 2),
                'stock' => $stock,
                'limit' => $limit,
                'groupSize' => $groupSize,
                'virtualGroup' => $virtualGroup,
                'virtualMinutes' => $virtualMinutes,
                'autoRefund' => !empty($item['autoRefund']) ? 1 : 0,
                'status' => ($realStock < $stock) ? 0 : (!empty($item['status']) ? 1 : 0),
                'name' => strval($goods->name ?? ($item['name'] ?? '')),
                'cover' => strval($goods->shortCover ?? ($goods->cover ?? ($item['cover'] ?? ''))),
                'originPrice' => floatval($goods->price ?? ($item['originPrice'] ?? 0)),
            ];
        }
        return $list;
    }

    public static function normalizeGroupBuyGoods($rawList, $mainId, $refreshStock = true)
    {
        $list = [];
        $changed = false;
        foreach (self::decodeList($rawList) as $item) {
            if (!is_array($item) || empty($item['goodsId'])) {
                continue;
            }
            $row = [
                'goodsId' => intval($item['goodsId']),
                'price' => floatval($item['price'] ?? 0),
                'stock' => intval($item['stock'] ?? 0),
                'limit' => intval($item['limit'] ?? 0),
                'groupSize' => intval($item['groupSize'] ?? 3),
                'virtualGroup' => !empty($item['virtualGroup']) ? 1 : 0,
                'virtualMinutes' => intval($item['virtualMinutes'] ?? 0),
                'autoRefund' => !empty($item['autoRefund']) ? 1 : 0,
                'status' => !empty($item['status']) ? 1 : 0,
                'name' => strval($item['name'] ?? ''),
                'cover' => strval($item['cover'] ?? ''),
                'originPrice' => floatval($item['originPrice'] ?? 0),
                'realStock' => intval($item['stock'] ?? 0),
            ];
            if ($refreshStock) {
                $goods = GoodsClass::getById($row['goodsId'], true);
                if (!empty($goods) && intval($goods->mainId ?? 0) === intval($mainId)) {
                    $realStock = intval($goods->stock ?? 0);
                    $row['realStock'] = $realStock;
                    $row['name'] = strval($goods->name ?? $row['name']);
                    $row['cover'] = strval($goods->shortCover ?? ($goods->cover ?? $row['cover']));
                    $row['originPrice'] = floatval($goods->price ?? $row['originPrice']);
                    if ($realStock < $row['stock'] && $row['status'] == 1) {
                        $row['status'] = 0;
                        $changed = true;
                    }
                }
            }
            $list[] = $row;
        }
        if ($changed && $refreshStock) {
            $saved = self::getJson($mainId, self::REDIS_GROUP_BUY);
            $persist = [];
            foreach ($list as $g) {
                unset($g['realStock']);
                $persist[] = $g;
            }
            $saved['goods'] = $persist;
            self::setJson($mainId, self::REDIS_GROUP_BUY, $saved);
        }
        return $list;
    }

    // -------------------- 热门/上新/下拉 --------------------

    public static function getGoodsSection($mainId, $moduleKey)
    {
        $mainId = intval($mainId);
        $suffix = self::sectionSuffix($moduleKey);
        $saved = self::getJson($mainId, $suffix);
        $defaults = [
            'hot' => '热门推荐',
            'new' => '今日上新',
            'pullGoods' => '更多商品',
        ];
        return [
            'enabled' => HomePageConfigClass::getModuleEnabled($mainId, $moduleKey),
            'name' => strval($saved['name'] ?? ($defaults[$moduleKey] ?? '')),
            'type' => intval($saved['type'] ?? self::LINK_GOODS),
            'value' => strval($saved['value'] ?? ''),
            'sort' => intval($saved['sort'] ?? self::SORT_PRODUCT),
        ];
    }

    public static function saveGoodsSection($mainId, $moduleKey, $data)
    {
        $mainId = intval($mainId);
        $suffix = self::sectionSuffix($moduleKey);
        $name = trim(strval($data['name'] ?? ''));
        $type = intval($data['type'] ?? 0);
        $value = trim(strval($data['value'] ?? ''));
        $sort = intval($data['sort'] ?? self::SORT_PRODUCT);
        // layoutCols/displayCount 由读取时按真实商品数量自动推导，保存时不再接收商家手动配置
        if ($name === '') {
            util::fail('请输入首页展示名称');
        }
        if (mb_strlen($name) > 20) {
            util::fail('展示名称不能超过20字');
        }
        if (!in_array($type, [self::LINK_GOODS, self::LINK_CATEGORY, self::LINK_USE_CASE], true)) {
            util::fail('关联类型无效');
        }
        if ($value === '') {
            util::fail('请选择关联内容');
        }
        if (!in_array($sort, [self::SORT_PRODUCT, self::SORT_SALES, self::SORT_NEW], true)) {
            util::fail('排序规则无效');
        }
        self::setJson($mainId, $suffix, [
            'name' => $name,
            'type' => $type,
            'value' => $value,
            'sort' => $sort,
        ]);
        HomePageConfigClass::updateModuleEnabled($mainId, $moduleKey, !empty($data['enabled']) ? 1 : 0);
        return true;
    }

    /**
     * 按真实商品总数与模块类型自动推导首页列数与展示数量
     * - 1个商品：1排1列，展示全部
     * - 2个商品：1排2列，展示全部
     * - ≥3个：hot/new 按1排3列且只展示3个；pullGoods 按1排2列且展示全部
     *
     * @param int $goodsTotal 关联配置解析出的真实商品总数
     * @param string $moduleKey hot|new|pullGoods
     * @return array{layoutCols:int,displayCount:int}
     */
    public static function resolveGoodsSectionLayout($goodsTotal, $moduleKey)
    {
        $goodsTotal = intval($goodsTotal);
        if ($goodsTotal <= 1) {
            return ['layoutCols' => 1, 'displayCount' => 0];
        }
        if ($goodsTotal === 2) {
            return ['layoutCols' => 2, 'displayCount' => 0];
        }
        if ($moduleKey === 'pullGoods') {
            return ['layoutCols' => 2, 'displayCount' => 0];
        }
        return ['layoutCols' => 3, 'displayCount' => 3];
    }

    /**
     * 规范化排列规则取值，非法/缺省时回退默认值
     */
    public static function normalizeLayoutCols($cols)
    {
        $cols = intval($cols);
        return in_array($cols, self::LAYOUT_COLS_OPTIONS, true) ? $cols : self::DEFAULT_LAYOUT_COLS;
    }

    /**
     * 将热门推荐/今日上新/下拉商品的关联配置(type+value)解析为真实商品列表，用于首页展示
     * type=2 商品：value 为商品ID逗号拼接，按选择顺序展示
     * type=3 分类：value 为分类ID逗号拼接，取分类下全部商品
     * type=4 场景：value 为场景ID逗号拼接，取场景下全部商品
     * sort=1 按上面解析出的原始顺序；sort=2 按销量（虚拟+实际）降序；sort=3 按上架时间降序
     *
     * @param int $mainId
     * @param int $type
     * @param string $value
     * @param int $sort
     * @param int $limit
     * @return array [{id,name,price,stock,cover,coverUrl,sold}]
     */
    public static function resolveDisplayGoods($mainId, $type, $value, $sort, $limit = self::DISPLAY_GOODS_LIMIT)
    {
        $paged = self::resolveDisplayGoodsPaged($mainId, $type, $value, $sort, 1, $limit);
        return $paged['list'];
    }

    /**
     * 匹配关联配置下的全部商品行（未截断、未格式化封面URL），供分页与总数统计复用
     *
     * @param int $mainId
     * @param int $type
     * @param string $value
     * @param int $sort
     * @return array
     */
    public static function matchGoodsRows($mainId, $type, $value, $sort)
    {
        $mainId = intval($mainId);
        $type = intval($type);
        $value = trim(strval($value));
        if ($mainId <= 0 || $value === '') {
            return [];
        }

        $ids = array_values(array_unique(array_filter(array_map('intval', explode(',', $value)))));
        if (empty($ids)) {
            return [];
        }

        $goodsIds = [];
        if ($type === self::LINK_GOODS) {
            // 商品类型：保留用户选择顺序
            $goodsIds = $ids;
        } elseif ($type === self::LINK_CATEGORY) {
            $rows = GoodsCategoryClass::getAllByCondition(
                ['cId' => ['in', $ids], 'delStatus' => 0],
                null,
                'gId'
            );
            $goodsIds = array_values(array_unique(array_map('intval', array_column($rows, 'gId'))));
        } elseif ($type === self::LINK_USE_CASE) {
            $rows = GoodsUseCaseClass::getAllByCondition(
                ['useCaseId' => ['in', $ids]],
                null,
                'goodsId'
            );
            $goodsIds = array_values(array_unique(array_map('intval', array_column($rows, 'goodsId'))));
        }
        if (empty($goodsIds)) {
            return [];
        }

        // 注意：Base::getByIds 传入 $order 会走到未定义的 order() 方法而报错，这里统一取回后在 PHP 侧排序
        $rows = GoodsClass::getByIds($goodsIds, null, null, 'id,name,price,stock,cover,sold,actualSold,status,delStatus,masterId,mainId,createTime');
        // 仅取当前门店、未删除、上架中的主规格商品
        $rows = array_values(array_filter($rows, function ($row) use ($mainId) {
            return intval($row['mainId'] ?? 0) === $mainId
                && intval($row['delStatus'] ?? 0) === 0
                && intval($row['status'] ?? 0) === 1
                && intval($row['masterId'] ?? 0) === 0;
        }));

        if ($sort == self::SORT_SALES) {
            usort($rows, function ($a, $b) {
                $soldA = floatval($a['actualSold'] ?? 0) + floatval($a['sold'] ?? 0);
                $soldB = floatval($b['actualSold'] ?? 0) + floatval($b['sold'] ?? 0);
                return $soldB <=> $soldA;
            });
        } elseif ($sort == self::SORT_NEW) {
            usort($rows, function ($a, $b) {
                return strtotime($b['createTime'] ?? '') <=> strtotime($a['createTime'] ?? '');
            });
        } elseif ($type === self::LINK_GOODS) {
            // 商品类型按用户选择顺序重新排列；分类/场景按商品排序时无自定义顺序可依，保持数据库默认返回顺序
            $indexBy = [];
            foreach ($rows as $row) {
                $indexBy[intval($row['id'])] = $row;
            }
            $ordered = [];
            foreach ($goodsIds as $gid) {
                if (isset($indexBy[$gid])) {
                    $ordered[] = $indexBy[$gid];
                }
            }
            $rows = $ordered;
        }

        return $rows;
    }

    /**
     * 将原始商品行格式化为首页/列表展示结构（含 coverUrl）
     *
     * @param array $rows
     * @return array
     */
    public static function formatGoodsRows($rows)
    {
        $list = [];
        $goodsIds = [];
        foreach ($rows as $row) {
            $goodsIds[] = intval($row['id'] ?? 0);
        }
        $specEnabledMap = GoodsClass::getSpecEnabledMap($goodsIds);
        foreach ($rows as $row) {
            $id = intval($row['id']);
            $cover = strval($row['cover'] ?? '');
            $coverUrl = $cover !== '' ? imgUtil::groupImg($cover) . '?x-oss-process=image/resize,m_fill,h_700,w_700' : '';
            $list[] = [
                'id' => $id,
                'name' => strval($row['name'] ?? ''),
                'price' => floatval($row['price'] ?? 0),
                'stock' => intval($row['stock'] ?? 0),
                'cover' => $cover,
                'coverUrl' => $coverUrl,
                'sold' => intval(bcadd($row['actualSold'] ?? 0, $row['sold'] ?? 0)),
                'specEnabled' => intval($specEnabledMap[$id] ?? 0),
            ];
        }
        return $list;
    }

    /**
     * 分页解析关联配置下的商品列表，返回 list + total（真实总数，不受首页展示上限限制）
     *
     * @param int $mainId
     * @param int $type
     * @param string $value
     * @param int $sort
     * @param int $page
     * @param int $pageSize 传 0 表示不分页返回全部
     * @return array {list, total}
     */
    public static function resolveDisplayGoodsPaged($mainId, $type, $value, $sort, $page = 1, $pageSize = self::DISPLAY_GOODS_LIMIT)
    {
        $rows = self::matchGoodsRows($mainId, $type, $value, $sort);
        $total = count($rows);
        $page = max(1, intval($page));
        $pageSize = intval($pageSize);
        if ($pageSize > 0) {
            $rows = array_slice($rows, ($page - 1) * $pageSize, $pageSize);
        }
        return [
            'list' => self::formatGoodsRows($rows),
            'total' => $total,
        ];
    }

    /**
     * 根据 displayCount 计算首页实际截断条数：1-10 用配置值，0（全部）回退默认上限
     * 供秒杀/团购等活动模块使用
     *
     * @param mixed $displayCount
     * @return int
     */
    public static function resolveHomeDisplayLimit($displayCount)
    {
        $count = intval($displayCount);
        if ($count >= 1 && $count <= 10) {
            return $count;
        }
        return self::DISPLAY_GOODS_LIMIT;
    }

    public static function sectionSuffix($moduleKey)
    {
        $map = [
            'hot' => self::REDIS_HOT,
            'new' => self::REDIS_NEW,
            'pullGoods' => self::REDIS_PULL_GOODS,
        ];
        if (!isset($map[$moduleKey])) {
            util::fail('无效模块');
        }
        return $map[$moduleKey];
    }

    // -------------------- 活动公共 --------------------

    public static function normalizeActivityBase($saved)
    {
        return [
            'title' => strval($saved['title'] ?? ''),
            'subtitle' => strval($saved['subtitle'] ?? ''),
            'showCountdown' => !empty($saved['showCountdown']) ? 1 : 0,
            // 商品展开：开启后首页按1排1列展示全部商品，默认关闭
            'expand' => !empty($saved['expand']) ? 1 : 0,
            'startTime' => intval($saved['startTime'] ?? 0),
            'endTime' => intval($saved['endTime'] ?? 0),
            'desc' => strval($saved['desc'] ?? ''),
        ];
    }

    /**
     * 按已添加商品数量与「商品展开」开关自动推导首页列数与展示数量
     * - expand 开启：1排1列，展示全部
     * - 1个商品：1排1列；2个：1排2列；≥3个：1排3列且只展示3个
     *
     * @param int $goodsCount 已添加商品总数（含未上架）
     * @param int $expand 商品展开开关 0/1
     * @return array{layoutCols:int,displayCount:int}
     */
    public static function resolveActivityLayout($goodsCount, $expand)
    {
        if (!empty($expand)) {
            return ['layoutCols' => 1, 'displayCount' => 0];
        }
        $goodsCount = intval($goodsCount);
        if ($goodsCount <= 1) {
            return ['layoutCols' => 1, 'displayCount' => 0];
        }
        if ($goodsCount === 2) {
            return ['layoutCols' => 2, 'displayCount' => 0];
        }
        return ['layoutCols' => 3, 'displayCount' => 3];
    }

    public static function validateActivityBase($data)
    {
        $title = trim(strval($data['title'] ?? ''));
        $subtitle = trim(strval($data['subtitle'] ?? ''));
        $desc = trim(strval($data['desc'] ?? ''));
        $startTime = intval($data['startTime'] ?? 0);
        $endTime = intval($data['endTime'] ?? 0);
        // layoutCols/displayCount 由读取时按商品数量自动推导，保存时不再接收商家手动配置
        if ($title === '') {
            util::fail('请输入活动标题');
        }
        if (mb_strlen($title) > 10) {
            util::fail('活动标题不能超过10字');
        }
        if ($subtitle === '') {
            util::fail('请输入活动副标题');
        }
        if (mb_strlen($subtitle) > 20) {
            util::fail('活动副标题不能超过20字');
        }
        if ($startTime <= 0 || $endTime <= 0) {
            util::fail('请选择活动时间');
        }
        if ($endTime <= $startTime) {
            util::fail('结束时间必须大于开始时间');
        }
        if ($desc === '') {
            util::fail('请输入活动说明');
        }
        if (mb_strlen($desc) > 500) {
            util::fail('活动说明不能超过500字');
        }
        return [
            'title' => $title,
            'subtitle' => $subtitle,
            'showCountdown' => !empty($data['showCountdown']) ? 1 : 0,
            'expand' => !empty($data['expand']) ? 1 : 0,
            'startTime' => $startTime,
            'endTime' => $endTime,
            'desc' => $desc,
        ];
    }

    /**
     * 活动状态：0未开始 1进行中 2已结束；模块关闭视为已结束展示用
     */
    public static function calcActivityStatus($startTime, $endTime, $enabled)
    {
        if (empty($enabled)) {
            return 2;
        }
        $now = time();
        $startTime = intval($startTime);
        $endTime = intval($endTime);
        if ($startTime <= 0 || $endTime <= 0) {
            return 0;
        }
        if ($now < $startTime) {
            return 0;
        }
        if ($now > $endTime) {
            return 2;
        }
        return 1;
    }
}