<?php
declare(strict_types=1);

namespace addon\haonav\controller\trait;

use addon\haonav\model\Links as LinksModel;
use addon\haonav\model\Category as CategoryModel;

/**
 * 分类页：顶级分类按二级子分类分组 / 叶子分类直接平铺
 */
trait CategoryTrait
{
    /**
     * 分类页
     */
    public function category($id = 0)
    {
        $info = CategoryModel::with([
            'children' => function ($query) {
                $query->with(['subLinks' => function ($q) {
                    $q->order('click_count', 'desc');
                }]);
            },
        ])->where('status', 1)->find($id);

        if (!$info) {
            return redirect('/haonav/index.html');
        }

        // 顶级分类且有子分类：按二级子分类分组展示
        if ($info->pid == 0 && $info->children && $info->children->count() > 0) {
            // 未细分二级的链接（sub_cid=0）归入「常用」分组，排在最后
            $others = LinksModel::where('cid', $id)
                ->where('sub_cid', 0)
                ->where('status', 1)
                ->order('click_count', 'desc')
                ->select();
            $this->view->assign('others', $others);
            $this->view->assign('mode', 'group');
        } else {
            // 二级分类 / 叶子分类：直接列出该分类下的全部链接
            $links = ($info->pid == 0)
                ? LinksModel::where('cid', $id)->where('status', 1)
                : LinksModel::where('sub_cid', $id)->where('status', 1);
            $links = $links->order('click_count', 'desc')->select();
            $this->view->assign('links', $links);
            $this->view->assign('mode', 'flat');
        }

        $this->view->assign('info', $info);
        $this->assignSeo();
        return $this->view->fetch();
    }
}