<?php

namespace bizHd\homePageConfig\classes;

use biz\shop\classes\ShopClass;
use bizHd\goods\classes\GoodsClass;
use bizHd\goods\classes\GoodsSettingClass;
use common\components\business;
use common\components\util;

/**
 * 门店首页"展示数据"组装类
 * 把 HomePageConfigClass/HomePageModuleClass 存的原始配置，格式化为可直接渲染的结构
 * （拼好图片完整URL、过滤未开启/未上架内容、解析出真实商品列表、普通商品套上商城涨价等）。
 * 供 app-mall（顾客端商城首页）与 app-hd（商家端配置预览）共用同一套数据，
 * 保证"预览"看到的效果与顾客端真实首页完全一致。
 */
class HomePageDisplayClass
{
    /**
     * 一次性组装首页全部模块的展示数据
     *
     * @param int $mainId
     * @param int $shopId
     * @return array
     */
    public static function buildHome($mainId, $shopId)
    {
        // 三个普通商品模块共用一次涨价配置，避免重复查库
        $rise = GoodsSettingClass::getRise($mainId);
        return [
            'modules' => HomePageConfigClass::getModules($mainId, $shopId),
            'topNav' => self::formatTopNav($mainId, HomePageConfigClass::getTopNav($mainId, $shopId)),
            'banner' => self::formatBanner(HomePageConfigClass::getBanner($mainId, $shopId)),
            'navGrid' => self::formatNavGrid(HomePageModuleClass::getNavGrid($mainId, $shopId)),
            'seckill' => self::formatActivity(HomePageModuleClass::getSeckill($mainId, $shopId, true)),
            'groupBuy' => self::formatActivity(HomePageModuleClass::getGroupBuy($mainId, $shopId, true)),
            'hot' => self::formatGoodsSection($mainId, $shopId, 'hot', $rise),
            'new' => self::formatGoodsSection($mainId, $shopId, 'new', $rise),
            'pullGoods' => self::formatGoodsSection($mainId, $shopId, 'pullGoods', $rise),
        ];
    }

    /**
     * 格式化顶部导航：门店名称不落 Redis，实时取 xhShop.merchantName
     *
     * @param int $mainId 门店 shopId
     * @param array $data HomePageConfigClass::getTopNav 返回值
     * @return array
     */
    public static function formatTopNav($mainId, $data)
    {
        $shop = ShopClass::getById($mainId, false, 'merchantName');
        $data['merchantName'] = is_array($shop) ? ($shop['merchantName'] ?? '') : '';
        return $data;
    }

    /**
     * 格式化轮播图：关闭时清空列表；开启时补上完整图片URL
     *
     * @param array $data HomePageConfigClass::getBanner 返回值
     * @return array
     */
    public static function formatBanner($data)
    {
        if (empty($data['enabled'])) {
            return ['enabled' => 0, 'interval' => intval($data['interval'] ?? 3), 'list' => []];
        }
        $list = [];
        foreach ($data['list'] as $item) {
            $img = $item['img'] ?? '';
            $formatted = $img !== '' ? business::formatUploadImg($img) : ['url' => ''];
            $list[] = [
                'img' => $img,
                'imgUrl' => $formatted['url'] ?? '',
                'type' => intval($item['type'] ?? 1),
                'value' => strval($item['value'] ?? ''),
            ];
        }
        return ['enabled' => 1, 'interval' => intval($data['interval'] ?? 3), 'list' => $list];
    }

    /**
     * 格式化金刚区：关闭时清空列表；开启时过滤未启用的单项，补上图标完整URL
     *
     * @param array $data HomePageModuleClass::getNavGrid 返回值
     * @return array
     */
    public static function formatNavGrid($data)
    {
        if (empty($data['enabled'])) {
            return ['enabled' => 0, 'cols' => intval($data['cols'] ?? 5), 'list' => []];
        }
        $list = [];
        foreach ($data['list'] as $item) {
            if (empty($item['enabled'])) {
                continue;
            }
            $icon = $item['icon'] ?? '';
            $iconUrl = $icon;
            $iconType = intval($item['iconType'] ?? 1);
            // 默认图标库 preset:N → OSS 静态图完整 URL（与前端默认图库一致）
            if (preg_match('/^preset:(\d+)$/', $icon, $m)) {
                $n = intval($m[1]);
                if ($n >= 1 && $n <= 12) {
                    $path = 'hhb/images/navGrid-default/navGrid-default' . $n . '.png';
                    $formatted = business::formatUploadImg($path);
                    $iconUrl = $formatted['url'] ?? $path;
                }
            } elseif ($iconType === 2 && $icon !== '' && strpos($icon, 'http') !== 0) {
                // 商家上传图标转完整 URL
                $formatted = business::formatUploadImg($icon);
                $iconUrl = $formatted['url'] ?? $icon;
            }
            $list[] = [
                'id' => $item['id'],
                'name' => $item['name'],
                'icon' => $icon,
                'iconUrl' => $iconUrl,
                'iconType' => $iconType,
                'type' => intval($item['type'] ?? 3),
                'value' => strval($item['value'] ?? ''),
            ];
        }
        return ['enabled' => 1, 'cols' => intval($data['cols'] ?? 5), 'list' => $list];
    }

    /**
     * 过滤上架中的活动商品并补上封面完整URL（不做条数截断）
     *
     * @param array $rawList
     * @return array
     */
    public static function filterActivityGoods($rawList)
    {
        $goods = [];
        foreach ($rawList as $item) {
            if (empty($item['status'])) {
                continue;
            }
            $cover = $item['cover'] ?? '';
            if ($cover !== '' && strpos($cover, 'http') !== 0) {
                $formatted = business::formatUploadImg($cover);
                $item['coverUrl'] = $formatted['url'] ?? $cover;
            } else {
                $item['coverUrl'] = $cover;
            }
            // 列表页统一用 id 字段，与普通商品列表对齐
            $item['id'] = intval($item['goodsId'] ?? ($item['id'] ?? 0));
            $goods[] = $item;
        }
        return $goods;
    }

    /**
     * 格式化秒杀/团购活动：只返回上架中的活动商品，并按 displayCount 截断；附带 goodsTotal
     *
     * @param array $data HomePageModuleClass::getSeckill/getGroupBuy 返回值
     * @return array
     */
    public static function formatActivity($data)
    {
        if (empty($data['enabled'])) {
            $data['goods'] = [];
            $data['goodsTotal'] = 0;
            return $data;
        }
        $goods = self::filterActivityGoods($data['goods'] ?? []);
        $data['goodsTotal'] = count($goods);
        $limit = !empty($data['expand']) ? 0 : HomePageModuleClass::resolveHomeDisplayLimit($data['displayCount'] ?? 0);
        if ($limit > 0 && count($goods) > $limit) {
            $goods = array_slice($goods, 0, $limit);
        }
        $data['goods'] = $goods;
        return $data;
    }

    /**
     * 格式化热门推荐/今日上新/下拉商品：关闭时清空商品；开启时按真实商品数量自动推导列数与展示条数
     * 输出价格为商城涨价后的售价（与详情页 obeyRiseRule 一致）；秒杀/团购不走本方法
     *
     * @param int $mainId
     * @param int $shopId
     * @param string $moduleKey hot|new|pullGoods
     * @param array|null $rise 已查好的涨价配置；单模块接口未传时内部再查一次
     * @return array
     */
    public static function formatGoodsSection($mainId, $shopId, $moduleKey, $rise = null)
    {
        $data = HomePageModuleClass::getGoodsSection($mainId, $shopId, $moduleKey);
        if (empty($data['enabled'])) {
            $data['goods'] = [];
            $data['goodsTotal'] = 0;
            $data['layoutCols'] = 1;
            return $data;
        }
        $rows = HomePageModuleClass::matchGoodsRows($mainId, $data['type'], $data['value'], $data['sort']);
        $total = count($rows);
        $layout = HomePageModuleClass::resolveGoodsSectionLayout($total, $moduleKey);
        $data['layoutCols'] = $layout['layoutCols'];
        if ($layout['displayCount'] > 0 && $layout['displayCount'] < $total) {
            $rows = array_slice($rows, 0, $layout['displayCount']);
        }
        // 首页列表必须走与详情页相同的涨价公式，否则顾客看到原价、点进详情才变价
        $data['goods'] = self::applyMallRisePrice(HomePageModuleClass::formatGoodsRows($rows), $mainId, $rise);
        $data['goodsTotal'] = $total;
        return $data;
    }

    /**
     * 「更多」列表页分页入口：按模块返回全部可展示商品
     *
     * @param int $mainId
     * @param int $shopId
     * @param string $moduleKey seckill|groupBuy|hot|new|pullGoods
     * @param int $page
     * @param int $pageSize
     * @return array {list, total, totalPage, page, pageSize, moreData, title}
     */
    public static function getSectionGoodsPage($mainId, $shopId, $moduleKey, $page = 1, $pageSize = 10)
    {
        $mainId = intval($mainId);
        $shopId = intval($shopId);
        $moduleKey = strval($moduleKey);
        $page = max(1, intval($page));
        $pageSize = max(1, intval($pageSize));
        if ($mainId <= 0) {
            util::fail('无效门店');
        }
        // moduleKey / page / pageSize 形态校验由 GetSectionGoodsForm 完成

        $title = '';
        $list = [];
        $total = 0;
        // 秒杀/团购活动的起止时间，供列表页「更多」点击进详情时一并带上活动信息
        $activityEndTime = 0;
        $activityStartTime = 0;

        if ($moduleKey === 'seckill' || $moduleKey === 'groupBuy') {
            $data = $moduleKey === 'seckill'
                ? HomePageModuleClass::getSeckill($mainId, $shopId, true)
                : HomePageModuleClass::getGroupBuy($mainId, $shopId, true);
            $title = strval($data['title'] ?? '');
            if ($title === '') {
                $title = $moduleKey === 'groupBuy' ? '团购优惠' : '限时秒杀';
            }
            $activityStartTime = intval($data['startTime'] ?? 0);
            $activityEndTime = intval($data['endTime'] ?? 0);
            $all = empty($data['enabled']) ? [] : self::filterActivityGoods($data['goods'] ?? []);
            $total = count($all);
            $list = array_slice($all, ($page - 1) * $pageSize, $pageSize);
        } else {
            $data = HomePageModuleClass::getGoodsSection($mainId, $shopId, $moduleKey);
            $title = strval($data['name'] ?? '');
            if (empty($data['enabled'])) {
                $list = [];
                $total = 0;
            } else {
                $paged = HomePageModuleClass::resolveDisplayGoodsPaged(
                    $mainId,
                    $data['type'],
                    $data['value'],
                    $data['sort'],
                    $page,
                    $pageSize
                );
                // 「更多」列表与首页模块同源，同样补涨价；秒杀/团购走活动价，上面分支不套涨价
                $list = self::applyMallRisePrice($paged['list'], $mainId);
                $total = $paged['total'];
            }
        }

        $totalPage = $pageSize > 0 ? intval(ceil($total / $pageSize)) : 0;
        $moreData = $totalPage > $page ? 1 : 0;

        return [
            'list' => $list,
            'total' => $total,
            'totalPage' => $totalPage,
            'page' => $page,
            'pageSize' => $pageSize,
            'moreData' => $moreData,
            'title' => $title,
            'startTime' => $activityStartTime,
            'endTime' => $activityEndTime,
        ];
    }

    /**
     * 给首页普通商品套上店铺涨价后的售价
     * 只走 obeyRiseRule 纯计算，不走 getFinalPrice（后者每条商品 Redis 查聊天报价，
     * 首页游客 userId=0 必 miss，下拉商品全量时会拖慢约 1 秒）。
     * 无价商品（priceType=0）不涨价；秒杀/团购走活动价，不要调用本方法。
     *
     * @param array $goods formatGoodsRows 产出的商品列表
     * @param int $mainId 商户 mainId，未传入 $rise 时用来查涨价配置
     * @param array|null $rise GoodsSettingClass::getRise 的返回值，传入则不再查库
     * @return array
     */
    public static function applyMallRisePrice($goods, $mainId, $rise = null)
    {
        if (empty($goods) || !is_array($goods)) {
            return $goods;
        }
        if (!is_array($rise)) {
            $rise = intval($mainId) > 0 ? GoodsSettingClass::getRise($mainId) : [];
        }
        $riseSwitch = intval($rise['riseSwitch'] ?? 0);
        $riseType = intval($rise['riseType'] ?? 0);
        $riseAmount = floatval($rise['riseAmount'] ?? 0);
        // 未开启涨价时直接返回原价，避免对全量下拉商品做无意义循环
        if ($riseSwitch != 1 || $riseAmount <= 0) {
            return $goods;
        }
        foreach ($goods as $key => $item) {
            // 无价商品不参与涨价，与详情页 modifyAndRisePrice 一致
            if (isset($item['priceType']) && intval($item['priceType']) === 0) {
                continue;
            }
            $goods[$key] = GoodsClass::obeyRiseRule($item, $riseSwitch, $riseType, $riseAmount, [], []);
        }
        return $goods;
    }
}