<?php
namespace app\api\controller;

use app\model\Archives as ArchivesModel;
use app\model\Content;
use support\Request;
use hg\apidoc\annotation as Apidoc;
use support\Jwt\JwtToken;
use support\think\Db;

/**
 * 文章模块
 */
class ArticleController extends BaseController
{
    public $noNeedLogin = ['*'];

    private const CACHE_PREFIX_READ = 'article_read_';
    private const CACHE_TTL = 86400;

    /**
     * 列表
     * @Apidoc\Method("GET")
     * @Apidoc\Query("category_id", type="int", require=true, desc="分类ID", default=10)
     * @Apidoc\Query("page", type="int", require=true, desc="页码", default=1)
     * @Apidoc\Query("limit", type="int", require=true, desc="分页大小", default=10)
     */
    public function list()
    {
        $limit = (int)input('limit', 10);
        $category_id = (int)input('category_id', 0);

        $model = ArchivesModel::where('status', 'normal')->where('type', 'article');
        if ($category_id) {
            $model = $model->where('category_id', $category_id);
        }
        $list = $model->order('id', 'desc')->paginate($limit);
        
        $user_id = $this->getCurrentUserId();
        $list->each(function ($item) use ($user_id) {
            $item->is_read = $user_id ? $this->getReadStatus($item->id, $user_id) : 0;
            return $item;
        });
        
        return $this->success(__('successful'), $list->toArray());
    }

    /**
     * faq
     * @Apidoc\method("GET")
     * @Apidoc\Query("page", type="int", require=true, desc="页码", default=1)
     * @Apidoc\Query("limit", type="int", require=true, desc="分页大小", default=10)
     */
    public function faq()
    {
        $limit = (int)input('limit', 10);
        $list = ArchivesModel::alias('a')
            ->join('content c', 'a.id = c.id')
            ->where('a.status', 'normal')
            ->where('a.type', 'article')
            ->where('a.category_id', 9)
            ->field('a.title, a.id, c.content')
            ->order('a.id', 'desc')
            ->paginate($limit);
            
        return $this->success(__('successful'), $list->toArray());
    }

    /**
     * 详情
     * @Apidoc\Method("GET")
     * @Apidoc\Query("id", type="int", require=true, desc="ID")
     */
    public function detail()
    {
        $id = (int)input('id');
        if (!$id) {
            return $this->error(__("Invalid parameter"));
        }

        $vo = ArchivesModel::where('id', $id)->find();
        if (!$vo) {
            return $this->error(__("Article does not exist"));
        }

        $this->appendContent($vo);
        
        $user_id = $this->getCurrentUserId();
        if ($user_id) {
            $this->markAsRead($vo->id, $user_id);
        }
        
        return $this->success(__('successful'), $vo->toArray());
    }

    /**
     * 获取最新公告
     * @Apidoc\Method("GET")
     */
    public function last_notie()
    {
        $vo = ArchivesModel::where('type', 'article')
            ->where('status', 'normal')
            ->order('id', 'desc')
            ->find();
            
        if (!$vo) {
            return $this->success(__("successful"), []);
        }

        $this->appendContent($vo);
        
        $user_id = $this->getCurrentUserId();
        if ($user_id) {
            $this->markAsRead($vo->id, $user_id);
        }
        
        return $this->success(__('successful'), $vo->toArray());
    }

    /**
     * 单页详情
     * @Apidoc\Method("GET")
     * @Apidoc\Query("id", type="int", require=true, desc="ID")
     * @Apidoc\Query("name", type="string", require=true, desc="二选1")
     */
    public function singpage()
    {
        $id = (int)input('id');
        $name = input('name');

        $vo = null;
        if ($name) {
            $vo = ArchivesModel::where('name', $name)->find();
        } elseif ($id) {
            $vo = ArchivesModel::where('id', $id)->find();
        }

        if (!$vo) {
            return $this->error(__("Article does not exist"));
        }

        $this->appendContent($vo);
        
        return $this->success(__('successful'), $vo->toArray());
    }

    /**
     * 幻灯片
     * @Apidoc\Query("id", type="int", require=true, desc="ID")
     */
    public function slide()
    {
        $list = [
            ['image' => domain() . '/storage/slide/1.jpg', 'title' => ''],
            ['image' => domain() . '/storage/slide/2.webp', 'title' => ''],
            ['image' => domain() . '/storage/slide/3.webp', 'title' => ''],
            ['image' => domain() . '/storage/slide/4.jpg', 'title' => ''],
        ];
        return $this->success(__('successful'), $list);
    }

    /**
     * 设为已读
     * @Apidoc\Query("id", type="int", require=true, desc="ID,多个逗号隔开")
     */
    public function mask_as_read()
    {
        $ids = input('id');
        $user_id = $this->getCurrentUserId();
        
        if (!$user_id) {
            return $this->success(__('successful'));
        }

        $ids = array_filter(explode(',', $ids));
        foreach ($ids as $id) {
            $this->markAsRead((int)$id, $user_id);
        }
        
        return $this->success(__('successful'));
    }

    /**
     * 获取当前用户ID
     */
    protected function getCurrentUserId(): int
    {
        try {
            return (int)JwtToken::getCurrentId();
        } catch (\Throwable $e) {
            return 0;
        }
    }

    /**
     * 获取阅读状态
     */
    protected function getReadStatus(int $articleId, int $userId): int
    {
        return (int)(cache_get($this->getCacheKey($articleId, $userId)) ?: 0);
    }

    /**
     * 标记为已读
     */
    protected function markAsRead(int $articleId, int $userId = null): void
    {
        if (!$articleId) {
            return;
        }

        if (!$userId) {
            $userId = $this->getCurrentUserId();
        }

        if (!$userId) {
            return;
        }

        $cacheKey = $this->getCacheKey($articleId, $userId);
        if (!cache_get($cacheKey)) {
            Db::name('archives_read')->insert([
                'user_id' => $userId,
                'source_id' => $articleId,
                'value' => 1
            ]);
            cache($cacheKey, 1, self::CACHE_TTL);
        }
    }

    /**
     * 追加内容到文章
     */
    protected function appendContent(ArchivesModel $article): void
    {
        $content = Content::where('id', $article->id)->find();
        if ($content) {
            $article->setAddonData($content->toArray());
        }
    }

    /**
     * 生成缓存键
     */
    protected function getCacheKey(int $articleId, int $userId): string
    {
        return self::CACHE_PREFIX_READ . $articleId . '_' . $userId;
    }
}