package com.mindskip.xzs.controller.teacher;


import com.mindskip.xzs.base.BaseApiController;
import com.mindskip.xzs.base.RestResponse;
import com.mindskip.xzs.domain.KnowledgePoint;
import com.mindskip.xzs.service.KnowledgeService;
import lombok.AllArgsConstructor;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * @version 2.2.0
 * @description: 知识点
 * Copyright (C), 2020-2021, 武汉思维跳跃科技有限公司
 * @date 2021 /9/7 9:45
 */
@RestController("TeacherKnowledgeController")
@RequestMapping(value = "/api/teacher/knowledge")
@AllArgsConstructor
public class KnowledgeController extends BaseApiController {

    private final KnowledgeService knowledgeService;


    /**
     * 根据学科查询知识点
     *
     * @param subjectId the subject id
     * @return the rest response
     */
    @RequestMapping(value = "/select/{subjectId}", method = RequestMethod.POST)
    public RestResponse<List<KnowledgePoint>> select(@PathVariable Integer subjectId) {
        List<KnowledgePoint> knowledgePointRoot = knowledgeService.getKnowledgePointBySubjectId(subjectId);
        knowledgeRecursion(knowledgePointRoot);
        return RestResponse.ok(knowledgePointRoot);
    }


    private void knowledgeRecursion(List<KnowledgePoint> knowledgePointList) {
        knowledgePointList.forEach(item -> {
            List<KnowledgePoint> knowledgePointChild = knowledgeService.getKnowledgePointByParentId(item.getId());
            if (0 != knowledgePointChild.size()) {
                item.setChild(knowledgePointChild);
                knowledgeRecursion(knowledgePointChild);
            }
        });
    }
}