<?php
namespace app\index\controller;

use think\Db;
use think\Request;
use app\admin\model\Category as CategoryModel;
use app\admin\model\Article as ArticleModel;
use app\index\model\Tags as TagsModel;

/**
 * 文章管理  
 * @author huwhis@163.com
 * @version   0.0.1
 */
class Article extends Base
{
    protected $model;
    protected $category_model;

    public function __construct(Request $request = null)
    {
        parent::__construct($request);

        $this->model = new ArticleModel();
        $this->category_model = new CategoryModel();
        $this->assign('timeList', $this->model->createTimeArchive());
    }

    public function index($cid = 0)
    {
        if (!$cid) {
            throw new \think\exception\HttpException(404, '页面不存在');
        }
        
        $category_info = $this->category_model->field('id, pid, name, url, template')->find($cid);

        $data = $this->model->where(['is_del'=>0, 'cid'=>$cid])->field('id, cid, title, username, title_pic, summary, clicks, create_time')->order('id', 'desc')->paginate();

        $this->assign('category_info', $category_info);
        
        $this->assign('data', $data);
        $this->assign('cid', $cid);
        return $this->fetch($category_info->template);
    }

    public function detail($cid = 0, $id = 0)
    {
        if (!$cid || !$id) {
            throw new \think\exception\HttpException(404, '页面不存在');
        }

        $category_info = $this->category_model->field('id, pid, name, url, template')->where('is_del', 0)->find($cid);

        $this->assign('category_info', $category_info);
        
        $data = $this->model->field('id, cid, title, clicks, title_pic, keywords, summary, content, create_time')->find($id);
        
        $data['clicks'] += 1;
        
        @$data->save(['clicks'=>$data['clicks']], ['id'=>$id]);
        
        $this->assign('data', $data);

        // $next_prev = $this->getNextPrev($id, $cid);
        // $this->assign('next_prev', $next_prev);

        $hot = $this->hot($cid);
        $this->assign('hot', $hot);

        return $this->fetch();
    }

    /**
     * 获取文章上 or 下一篇
     */
    public function getNextPrev($id, $cid = null)
    {
        $data_p = null;
        $data_N = null;
        if ($cid) {
            $id_list = $this->model->where(['is_del' => 0, 'cid' => $cid])
                ->order(['sort' => 'desc', 'id' => 'desc'])
                ->column('id');

            if (count($id_list) > 1) {
                $key = array_search($id, $id_list);
                if ($key == 0) {
                    $data_p = null;
                    $N = $id_list[1];
                    $data_N = $this->model->field('id,title')->find($N);
                } elseif ($key == count($id_list) - 1) {
                    $P = $id_list[count($id_list) - 2];
                    $data_p = $this->model->field('id,title')->find($P);
                    $data_N = null;
                } else {
                    $P = $id_list[$key - 1];
                    $data_p = $this->model->field('id,title')->find($P);
                    $N = $id_list[$key + 1];
                    $data_N = $this->model->field('id,title')->find($N);
                }
            }
        }

        return ['prev' => $data_p, 'next' => $data_N];
    }
    
    /**
     * 感兴趣文章
     */
    public function hot($cid = 0)
    {
        $data = null;
        if ($cid) {
            $data = $this->model->where(['is_del' => 0, 'cid' => $cid])->field('id,cid,title,title_pic,create_time')->order('clicks','desc')->limit(3)->select();
        }

        return $data;
    }

    /**
     * 归档页面(时间)
     */
    public function archive($year=0,$month=0)
    {
        $time = mFristAndLast($year, $month);
        
        $data = Db::table('sur_article')->alias('a')->join('sur_category c','a.cid=c.id')
            ->where('a.create_time','>',$time['firstday'])
            ->where('a.create_time','<',$time['lastday'])
            ->field('a.id,a.cid,a.title,a.username,a.title_pic,a.summary,a.clicks,a.create_time,c.url,c.name as cname')
            ->order('id','desc')
            ->paginate();
  
        $this->assign('data', $data);
        $this->assign('year', $year);
        $this->assign('month', $month);
        return $this->fetch();
    }

    /**
     * 归档页面(发布者)
     */
    public function author($name = null)
    {
        if (!$name) {
            throw new \think\exception\HttpException(404, '页面不存在');
        }
                
        $data = Db::table('sur_article')->alias('a')->join('sur_category c','a.cid=c.id')
            ->where('a.username',$name)
            ->field('a.id,a.cid,a.title,a.username,a.title_pic,a.summary,a.clicks,a.create_time,c.url,c.name as cname')
            ->order('id','desc')
            ->paginate();
  
        $this->assign('data', $data);
        $this->assign('username', $name);
        
        return $this->fetch();
    }

    public function tags($name=null)
    {
        if (!$name) {
            throw new \think\exception\HttpException(404, '页面不存在');
        }
        
        $tagsModel = new TagsModel();

        $data = $tagsModel->where('tag', $name)->field('id, cid, title, username, title_pic, summary, clicks, create_time, url, cname')->order('id', 'desc')->paginate();

        $this->assign('data', $data);
        $this->assign('tag', $name);

        return $this->fetch();
    }
}