<?php
namespace app\controller;

use app\model\{Article as MArticle, Category};

class Article extends Base
{
    //列表页
    public function index()
    {
        $categoryId = input('param.category_id/d', 0);
        if($categoryId <= 0){
            return $this->error('错误页面');
        }
        $category = Category::getById($categoryId);
        if(empty($category)){
            return $this->error('错误页面');
        }
        $description = $category['description'] ? $category['description'] : $this->system['seo_description'];
        $this->setSeo($category['title'], $this->system['seo_keywords'], $description);

        $this->data['category'] = $category;
        $this->data['categoryId'] = $categoryId;
        $this->templateAssign($category);
        return $this->view($category['template_list'] ?? '');
    }

    //详情
    public function detail($id=0)
    {
        if($id <= 0){
            return $this->error('错误页面');
        }
        $article = MArticle::getById($id);
        if(empty($article)){
            return $this->error('无此文章');
        }
        MArticle::updateById($id, ['views' => $article['views'] + 1]);
        $category = Category::getById($article['category_id']);
        $TopCId = Category::firstGradeById($category['id']);
        if($TopCId == $category['id']) {
            $topCategory = $category;
        } else {
            $topCategory = Category::getById($TopCId);
        }

        $keywords = $article['seo_keywords'] ? $article['seo_keywords'] : $this->system['seo_keywords'];
        $description = $article['seo_description'] ? $article['seo_description'] : $this->system['seo_description'];
        $this->setSeo($article['title'], $keywords, $description);

        $this->data['article'] = $article;
        $this->data['category'] = $category;
        $this->data['categoryId'] = $category['id'];
        $this->data['topCategory'] = $topCategory;
        $this->data['prev'] = MArticle::getPrevArticleByIdAndCategoryId($id, $article['category_id'], true, $article['sort'], true);
        $this->data['next'] = MArticle::getNextArticleByIdAndCategoryId($id, $article['category_id'], true, $article['sort'], true);
        return $this->view($category['template_detail'] ?? '');
    }

    // 列表数据绑定
    private function templateAssign($category)
    {
        $template = strtolower($category['template_list'] ?? '');
        $TopCId = Category::firstGradeById($category['id']);
        if($TopCId == $category['id']) {
            $topCategory = $category;
        } else {
            $topCategory = Category::getById($TopCId);
        }
        $categoryChildren = Category::getChildrenByParentId($topCategory['id']);
        $this->data['topCategory'] = $topCategory;
        $this->data['categoryChildren'] = $categoryChildren;
        switch($template) {
            case 'products' :
                $this->assignProducts($topCategory, $category, $categoryChildren);
                break;
            case 'news' :
                $this->assignNews($topCategory, $category);
                break;
            default :
                $this->data['items'] = MArticle::getListPageByCategory($category['id'], $category['number'] ? $category['number'] : 20);
        }
    }

    // 详情数据绑定
    private function templateDetailAssign($article, $category)
    {

    }

    // 产品中心 - 展示当前分类和所有子类产品
    private function assignProducts($topCategory, $category, $categoryChildren)
    {
        $keyword = input('param.keyword', '');
        $cateIds[] = $category['id'];
        if($topCategory['id'] == $category['id']) {
            $children = $categoryChildren;
        } else {
            $children = Category::getChildrenByParentId($category['id']);
        }
        foreach ($children as $child) {
            $cateIds[] = $child['id'];
        }
        $this->data['items'] = MArticle::getListPageByCategories($cateIds, $category['number'] ? $category['number'] : 20, $keyword);
    }

    // 新闻
    private function assignNews($topCategory, $category)
    {


    }


}