<?php
// +----------------------------------------------------------------------
// | 学员端知识库控制器
// +----------------------------------------------------------------------

namespace app\api\controller\student;

use app\service\api\student\KnowledgeService;
use core\base\BaseController;
use think\Response;

/**
 * 学员知识库管理控制器
 * 提供知识库相关功能接口
 */
class KnowledgeController extends BaseController
{
    /**
     * 获取知识文章列表
     * @param int $student_id 学员ID
     * @return Response
     */
    public function getKnowledgeList($student_id)
    {
        $data = $this->request->params([
            ['category', ''],
            ['page', 1],
            ['limit', 10],
            ['keyword', '']
        ]);
        $data['student_id'] = $student_id;

        $this->validate($data, [
            'student_id' => 'require|integer|gt:0',
            'page' => 'integer|egt:1',
            'limit' => 'integer|between:1,50'
        ]);

        try {
            $service = new KnowledgeService();
            $result = $service->getKnowledgeList($data);
            
            return success($result, '获取知识文章列表成功');
            
        } catch (\Exception $e) {
            return fail($e->getMessage());
        }
    }

    /**
     * 获取知识分类列表
     * @return Response
     */
    public function getKnowledgeCategories()
    {
        try {
            $service = new KnowledgeService();
            $result = $service->getKnowledgeCategories('student');
            
            return success($result, '获取知识分类成功');
            
        } catch (\Exception $e) {
            return fail($e->getMessage());
        }
    }

    /**
     * 获取推荐文章
     * @param int $student_id 学员ID
     * @return Response
     */
    public function getRecommendArticles($student_id)
    {
        $data = $this->request->params([
            ['limit', 5]
        ]);
        $data['student_id'] = $student_id;

        $this->validate($data, [
            'student_id' => 'require|integer|gt:0',
            'limit' => 'integer|between:1,20'
        ]);

        try {
            $service = new KnowledgeService();
            $result = $service->getRecommendArticles($data);
            
            return success($result, '获取推荐文章成功');
            
        } catch (\Exception $e) {
            return fail($e->getMessage());
        }
    }

    /**
     * 获取文章详情
     * @param int $id 文章ID
     * @return Response
     */
    public function getKnowledgeDetail($id)
    {
        $data = $this->request->params([
            ['student_id', 0]
        ]);
        $data['id'] = $id;

        $this->validate($data, [
            'id' => 'require|integer|gt:0',
            'student_id' => 'require|integer|gt:0'
        ]);

        try {
            $service = new KnowledgeService();
            $result = $service->getKnowledgeDetail($data);
            
            return success($result, '获取文章详情成功');
            
        } catch (\Exception $e) {
            return fail($e->getMessage());
        }
    }

    /**
     * 标记文章已读
     * @return Response
     */
    public function markArticleRead()
    {
        $data = $this->request->params([
            ['article_id', 0],
            ['student_id', 0]
        ]);

        $this->validate($data, [
            'article_id' => 'require|integer|gt:0',
            'student_id' => 'require|integer|gt:0'
        ]);

        try {
            $service = new KnowledgeService();
            $result = $service->markArticleRead($data);
            
            return success($result, '标记已读成功');
            
        } catch (\Exception $e) {
            return fail($e->getMessage());
        }
    }

    /**
     * 收藏/取消收藏文章
     * @return Response
     */
    public function toggleArticleFavorite()
    {
        $data = $this->request->params([
            ['article_id', 0],
            ['student_id', 0],
            ['action', 'add'] // add-收藏, remove-取消收藏
        ]);

        $this->validate($data, [
            'article_id' => 'require|integer|gt:0',
            'student_id' => 'require|integer|gt:0',
            'action' => 'require|in:add,remove'
        ]);

        try {
            $service = new KnowledgeService();
            $result = $service->toggleArticleFavorite($data);
            
            return success($result, $data['action'] === 'add' ? '收藏成功' : '取消收藏成功');
            
        } catch (\Exception $e) {
            return fail($e->getMessage());
        }
    }

    /**
     * 获取知识库统计信息
     * @param int $student_id 学员ID
     * @return Response
     */
    public function getKnowledgeStats($student_id)
    {
        $this->validate(['student_id' => $student_id], [
            'student_id' => 'require|integer|gt:0'
        ]);

        try {
            $service = new KnowledgeService();
            $result = $service->getKnowledgeStats($student_id);
            
            return success($result, '获取知识库统计成功');
            
        } catch (\Exception $e) {
            return fail($e->getMessage());
        }
    }

    /**
     * 搜索知识文章
     * @param int $student_id 学员ID
     * @return Response
     */
    public function searchKnowledgeArticles($student_id)
    {
        $data = $this->request->params([
            ['keyword', ''],
            ['category', ''],
            ['page', 1],
            ['limit', 10]
        ]);
        $data['student_id'] = $student_id;

        $this->validate($data, [
            'student_id' => 'require|integer|gt:0',
            'keyword' => 'require|length:1,50',
            'page' => 'integer|egt:1',
            'limit' => 'integer|between:1,50'
        ]);

        try {
            $service = new KnowledgeService();
            $result = $service->searchKnowledgeArticles($data);
            
            return success($result, '搜索知识文章成功');
            
        } catch (\Exception $e) {
            return fail($e->getMessage());
        }
    }
}