<?php
/**
 *	后台管理系统-首页
 */
namespace app\index\controller;
use app\index\controller\Base;
use think\facade\Db;
use think\facade\View;
use think\facade\Env;
use think\facade\Config;

class Index extends Base
{
    /**
     * 首页
     */
    public function index()
    {
        return View::fetch();
    }

    /**
     * 获取站点资讯列表
     */
    public function siteNewslist()
    {
        // 获取站点资讯分类（顶级分类id为1的子分类）
        $categories = Db::name('yz_article_category')
            ->where('cid', 1)
            ->where('delete_time', null)
            ->select()
            ->toArray();
        
        $articles = [];
        $categoryData = [];
        
        // 提取分类名称和ID用于前端tab显示
        foreach ($categories as $category) {
            $categoryData[] = [
                'id' => $category['id'],
                'name' => $category['name']
            ];
            
            // 获取该分类下的文章
            $articles = Db::name('yz_article')
                ->where('cate', $category['id'])
                ->where('delete_time', null)
                ->where('status', 2)
                ->order('id', 'desc')
                ->field('id, cate, title, image, author, publishdate, views')
                ->select()
                ->toArray();
            
        }
        
        return json([
            'code' => 1, 
            'msg' => '获取成功', 
            'articles' => $articles,
            'categories' => $categoryData
        ]);
    }

    /**
     * 获取技术文章列表
     */
    public function technicalArticleslist()
    {
        // 获取技术文章分类（顶级分类id为3的子分类）
        $categories = Db::name('yz_article_category')
            ->where('cid', 3)
            ->where('delete_time', null)
            ->select()
            ->toArray();

        // 组装分类数据，方便后续查找
        $categoryData = [];
        $categoryImageMap = [];
        foreach ($categories as $category) {
            $categoryData[] = [
                'id' => $category['id'],
                'name' => $category['name']
            ];
            $categoryImageMap[$category['id']] = $category['image'] ?? '';
        }

        // 获取所有技术分类下的文章
        $technicalarticles = Db::name('yz_article')
            ->whereIn('cate', array_column($categories, 'id'))
            ->where('delete_time', null)
            ->where('status', 2)
            ->order('id', 'desc')
            ->field('id, cate, title, image, author, publishdate, views')
            ->select()
            ->toArray();

        // 替换image为空的文章
        foreach ($technicalarticles as &$article) {
            if (empty($article['image']) && !empty($categoryImageMap[$article['cate']])) {
                $article['image'] = $categoryImageMap[$article['cate']];
            }
        }
        unset($article);

        return json([
            'code' => 1,
            'msg' => '获取成功',
            'articles' => $technicalarticles,
            'categories' => $categoryData
        ]);
    }
}