<?php

declare(strict_types=1);
/**
 * +----------------------------------------------------------------------
 * 后台文章控制制器
 * @author huwhis@163.com
 * @version   0.0.1
 * +----------------------------------------------------------------------
 */

namespace app\controller\sys;

// 引入框架内置类
use think\Exception;
use think\facade\Db;
use think\facade\View;

use app\model\Category as CategoryModel;
use app\model\Article as ArticleModel;
use app\model\TagArticle as TagArticleModel;
use app\utils\FileUtils;
use app\utils\ReUtils;

class Article extends Base
{
    protected $modelName = "Article";

    public function index()
    {
        $categories = CategoryModel::select();

        $category_tree = list_tree($categories);

        $cid = $this->app->request->param('cid');

        $params = $this->app->request->param();

        $list = ArticleModel::queryPage($params);

        View::assign([
            'category_tree' => $category_tree,
            'list' => $list,
            'cid' => $cid
        ]);

        return View::fetch();
    }

    public function save($content_type = 0, $id = 0)
    {
        if ($this->app->request->isPost()) {
            $params = $this->app->request->param();

            if (!$params['cid']) {
                $this->error('请选择栏目');
            }
            if ($params['title'] == '') {
                $this->error("标题不能为空");
            }

            if ($params['titlepic'] && preg_match('/(http[s]:\/\/.*)/isU', $params['titlepic'])) {
                $params['titlepic'] = FileUtils::downloadUrlImg($params['titlepic']);
            }

            $params['content'] =  isset($params['content']) ? $params['content'] : '';

            $params['content'] = $this->saveRomteImage($params['content']);

            $params['keywords'] = trim($params['keywords']);

            try {
                if ($params['id'] != 0) {
                    $oldKeywords = ArticleModel::getKeywordsById((int) $params['id']);
                    $article = ArticleModel::update($params);
                    $oldTags = explode(",", $oldKeywords);
                    $newTags = explode(",", $article->keywords);

                    $addTas = array_diff($newTags, $oldTags);
                    $subTas = array_diff($oldTags, $newTags);

                    TagArticleModel::saveArticleTag($addTas, (int) $article->id, (int)$article->cid);
                    TagArticleModel::delArticleTag($subTas, (int) $article->id);
                } else {
                    $params['userid'] = $this->getSysUser()->userid;
                    $params['username'] = $this->getSysUser()->nickname != "" ? $this->getSysUser()->nickname : $this->getSysUser()->username;
                    unset($params['id']);
                    $article = ArticleModel::create($params);

                    $tags = explode(",", $article->keywords);

                    TagArticleModel::saveArticleTag($tags, (int) $article->id, (int) $article->cid);
                }
            } catch (\Exception $e) {
                $this->error("错误提示:" . $e->getMessage());
            }
            $this->success('操作成功', (string) url('/sys/article/index'));
        } else {
            if ($id) {
                $data = ArticleModel::find($id);
            } else {
                $data = new ArticleModel();
                $data->content_type = $content_type;
            }

            $categories = CategoryModel::field('id, parent_id, name')->select();

            View::assign('category_tree', list_tree($categories));

            View::assign('data', $data);

            $template = $content_type ? 'savemd' : 'save';

            return View::fetch($template);
        }
    }

    protected function saveRomteImage($content)
    {
        $content = stripslashes($content);
        $img_array = [];
        // 匹配所有远程图片
        $pattern = '/src="(http[s]:\/\/.*)"/isU';
        preg_match_all($pattern, $content, $img_array);

        // 删除重复 url
        $img_arrays = array_unique($img_array[1]);

        foreach ($img_arrays as $value) {
            $filename = FileUtils::downloadUrlImg($value);

            $content = str_replace($value, $filename, $content);
        }
        return $content;
    }

    public function move()
    {
        $ids = $this->request->param('ids');
        $cid = $this->request->param('cid');

        $tablename = ArticleModel::getTable();

        $idss = implode(',', $ids);

        $sql = "update " . $tablename . " set cid=" . $cid . " where id IN (" . $idss . ");";

        try {
            Db::execute($sql);
        } catch (Exception $e) {
            return ReUtils::error($e->getMessage());
        }

        return ReUtils::success();
    }

    /**
     * 删除
     * @param int|array $id  info id
     * @return array
     */
    public function delete($id)
    {
        if ($this->request->isPost()) {
            if (ArticleModel::destroy($id)) {
                if (is_array($id)) {
                    TagArticleModel::where('aid',"IN",$id)->delete();
                } else {
                    TagArticleModel::where('aid',"=",$id)->delete();
                }
                return ReUtils::success();
            } else {
                return ReUtils::error();
            }
        }
    }
}