<?php

declare(strict_types=1);

namespace app\index\controller;

use app\index\BaseController;
use Symfony\Component\VarDumper\VarDumper;
use think\exception\ValidateException;
use think\facade\Request;
use think\facade\Session;
use think\response\Json;
use think\db\exception\DbException;

use app\model\Articles;
use app\model\ArticlesCategory;


class NewsCenterController extends BaseController
{
    /**
     * 根据分类获取文章
     * @param string $category 分类名称
     * @return Json
     */
    public function getNewsByCategory(string $category): Json
    {
        // 查询分类
        $categoryInfo = ArticlesCategory::where('name', $category)
            ->where('delete_time', null)
            ->find();

        if (!$categoryInfo) {
            return json([
                'code' => 200,
                'msg' => 'success',
                'list' => [],
            ]);
        }

        // 查询文章
        $articles = Articles::published()
            ->where('cate', $categoryInfo['id'])
            ->order('publishdate', 'desc')
            ->limit(4)
            ->select();

        return json([
            'code' => 200,
            'msg' => 'success',
            'list' => $articles,
        ]);
    }

    /**
     * 获取企业新闻
     * @return Json
     */
    public function getCompanyNews(): Json
    {
        // 获取分页参数
        $page = Request::param('page', 1);
        $limit = Request::param('limit', 10);
        $page = max(1, intval($page));
        $limit = max(1, min(50, intval($limit))); // 限制每页最多50条

        // 查询分类
        $categoryInfo = ArticlesCategory::where('name', '企业新闻')
            ->where('delete_time', null)
            ->find();

        if (!$categoryInfo) {
            return json([
                'code' => 200,
                'msg' => 'success',
                'list' => [],
                'total' => 0,
                'page' => $page,
                'limit' => $limit,
            ]);
        }

        // 查询总数
        $total = Articles::where('cate', $categoryInfo['id'])
            ->where('delete_time', null)
            ->where('status', 2)
            ->count();

        // 查询文章
        $articles = Articles::where('cate', $categoryInfo['id'])
            ->where('delete_time', null)
            ->where('status', 2)
            ->order('top', 'desc')
            ->order('recommend', 'desc')
            ->order('sort', 'desc')
            ->order('publishdate', 'desc')
            ->page($page, $limit)
            ->select();

        return json([
            'code' => 200,
            'msg' => 'success',
            'list' => $articles,
            'total' => $total,
            'page' => $page,
            'limit' => $limit,
        ]);
    }

    /**
     * 获取金蝶新闻
     * @return Json
     */
    public function getKingdeeNews(): Json
    {
        // 获取分页参数
        $page = Request::param('page', 1);
        $limit = Request::param('limit', 10);
        $page = max(1, intval($page));
        $limit = max(1, min(50, intval($limit))); // 限制每页最多50条

        // 查询分类
        $categoryInfo = ArticlesCategory::where('name', '金蝶新闻')
            ->where('delete_time', null)
            ->find();

        if (!$categoryInfo) {
            return json([
                'code' => 200,
                'msg' => 'success',
                'list' => [],
                'total' => 0,
                'page' => $page,
                'limit' => $limit,
            ]);
        }

        // 查询总数
        $total = Articles::where('cate', $categoryInfo['id'])
            ->where('delete_time', null)
            ->where('status', 2)
            ->count();

        // 查询文章
        $articles = Articles::where('cate', $categoryInfo['id'])
            ->where('delete_time', null)
            ->where('status', 2)
            ->order('top', 'desc')
            ->order('recommend', 'desc')
            ->order('sort', 'desc')
            ->order('publishdate', 'desc')
            ->page($page, $limit)
            ->select();

        return json([
            'code' => 200,
            'msg' => 'success',
            'list' => $articles,
            'total' => $total,
            'page' => $page,
            'limit' => $limit,
        ]);
    }

    /**
     * 获取技术中心子分类
     * @return Json
     */
    public function getTechnologyCategories(): Json
    {
        // 获取"技术中心"主分类
        $parentCategory = ArticlesCategory::where('name', '技术中心')
            ->where('delete_time', null)
            ->find();

        if (!$parentCategory) {
            return json([
                'code' => 200,
                'msg' => 'success',
                'data' => []
            ]);
        }

        // 查找所有子分类
        $subCategories = ArticlesCategory::where('cid', $parentCategory['id'])
            ->where('delete_time', null)
            ->field('id,name,desc,sort,image')
            ->order('sort', 'desc')
            ->select();

        return json([
            'code' => 200,
            'msg' => 'success',
            'data' => $subCategories
        ]);
    }

    /**
     * 获取技术中心
     * @return Json
     */
    public function getTechnologyCenter(): Json
    {
        // 1. 分页参数规范化
        $page = max(1, intval(Request::param('page', 1)));
        $limit = max(1, min(50, intval(Request::param('limit', 10))));

        // 获取分类ID参数（可选）
        $categoryId = Request::param('category_id', null);

        // 2. 第一步：获取“技术中心”主分类的 id
        $parentCategory = ArticlesCategory::where('name', '技术中心')
            ->where('delete_time', null)
            ->find();

            // print_r($parentCategory['id']);

        if (!$parentCategory) {
            return $this->emptyResponse($page, $limit);
        }

        // 3. 第二步：查找 cid 等于主分类 id 的所有子分类 id
        $subCategoryQuery = ArticlesCategory::where('cid', $parentCategory['id'])
            ->where('delete_time', null);

            // print_r($subCategoryQuery->select());

        // 如果指定了分类ID，则只查询该分类
        if ($categoryId) {
            $subCategoryQuery->where('id', $categoryId);
        }

        $subCategoryIds = $subCategoryQuery->column('id');

        // print_r($subCategoryIds);

        if (empty($subCategoryIds)) {
            return $this->emptyResponse($page, $limit);
        }

        // 5. 第三步：查询 Articles 表，并限定字段
        $articleQuery = Articles::whereIn('cate', $subCategoryIds)
            ->where('delete_time', null)
            ->where('status', 2);

        // 获取总数
        $total = (clone $articleQuery)->count();

        // 获取列表：限定返回 id, title, desc, publishdate, image, likes, views
        $articles = $articleQuery->field('id,title,desc,publishdate,image,likes,views,cate')
            ->order([
                'top' => 'desc',
                'recommend' => 'desc',
                'sort' => 'desc',
                'publishdate' => 'desc'
            ])
            ->page($page, $limit)
            ->select();

        // 如果文章没有image，查询对应分类的image
        $categoryImages = ArticlesCategory::whereIn('id', $subCategoryIds)->column('image', 'id');

        foreach ($articles as &$article) {
            if (empty($article['image']) && isset($categoryImages[$article['cate']])) {
                $article['image'] = $categoryImages[$article['cate']];
            }
        }

        return json([
            'code' => 200,
            'msg' => 'success',
            'list' => $articles,
            'total' => $total,
            'page' => $page,
            'limit' => $limit,
        ]);
    }

    /**
     * 统一空返回
     */
    private function emptyResponse($page, $limit): Json
    {
        return json([
            'code' => 200,
            'msg' => 'success',
            'list' => [],
            'total' => 0,
            'page' => $page,
            'limit' => $limit,
        ]);
    }

    /**
     * 获取金蝶新闻详情
     */
    public function getKingdeeNewsDetail(int $id): Json
    {
        $article = Articles::where('id', $id)
            ->where('delete_time', null)
            ->where('status', 2)
            ->field('id,title,cate,image,desc,author,content,publisher,publishdate,views,likes,is_trans,transurl')
            ->find();

        if (!$article) {
            return json(['code' => 404, 'msg' => '文章不存在', 'data' => null]);
        }

        $cate = (int) $article['cate'];

        // 转换为数组再处理
        $articleData = $article->toArray();
        // $articleData['catename'] = $this->getCategoryName($cate);

        // 获取相关文章
        $articleData['relatedArticles'] = $this->getRelatedArticles($id, $cate);

        // 获取上一篇下一篇
        $articleData['nextPreviousArticles'] = $this->getNextPreviousArticles($id, $cate);

        // 增加浏览量
        Articles::where('id', $id)->inc('views')->update();

        return json(['code' => 200, 'msg' => 'success', 'data' => $articleData]);
    }

    /**
     * 获取企业新闻详情
     */
    public function getCompanyNewsDetail(int $id): Json
    {
        $article = Articles::where('id', $id)
            ->where('delete_time', null)
            ->where('status', 2)
            ->find();

        if (!$article) {
            return json(['code' => 404, 'msg' => '文章不存在', 'data' => null]);
        }

        $cate = (int) $article['cate'];

        // 转换为数组再处理
        $articleData = $article->toArray();
        $articleData['catename'] = $this->getCategoryName($cate);

        // 获取相关文章
        $articleData['relatedArticles'] = $this->getRelatedArticles($id, $cate);

        // 获取上一篇下一篇
        $articleData['nextPreviousArticles'] = $this->getNextPreviousArticles($id, $cate);

        // 增加浏览量
        Articles::where('id', $id)->inc('views')->update();

        return json(['code' => 200, 'msg' => 'success', 'data' => $articleData]);
    }

    /**
     * 获取上一篇下一篇
     * @param int $id 文章ID
     * @param int $cate 分类ID
     * @return array
     */
    private function getNextPreviousArticles(int $id, int $cate): array
    {
        $nextArticle = Articles::where('id', '<', $id)
            ->where('cate', $cate)
            ->where('delete_time', null)
            ->where('status', 2)
            ->field('id,title')
            ->find();

        $previousArticle = Articles::where('id', '>', $id)
            ->where('cate', $cate)
            ->where('delete_time', null)
            ->where('status', 2)
            ->field('id,title')
            ->find();

        return [
            'code' => 200,
            'msg' => 'success',
            'next' => $nextArticle,
            'previous' => $previousArticle,
        ];
    }

    /**
     * 通过分类 ID 获取分类名称
     * @param int $cateId 分类ID
     * @return string
     */
    private function getCategoryName(int $id): string
    {
        $categoryInfo = ArticlesCategory::where('id', $id)
            ->where('delete_time', null)
            ->find();

        if (!$categoryInfo) {
            return '未分类';
        }

        return $categoryInfo['name'];
    }

    /**
     * 获取相关文章
     */
    private function getRelatedArticles(int $id, int $cate): array
    {
        $articles = Articles::where('id', '<>', $id)
            ->where('cate', $cate)
            ->where('delete_time', null)
            ->where('status', 2)
            ->order('top', 'desc')
            ->order('recommend', 'desc')
            ->order('sort', 'desc')
            ->order('id', 'desc')
            ->limit(5)
            ->select();

        foreach ($articles as &$article) {
            $article['cate'] = $this->getCategoryName($article['cate']);
        }

        return [
            'code' => 200,
            'msg' => 'success',
            'list' => $articles,
        ];
    }

}