package com.mindskip.xzs.controller.admin;


import com.mindskip.xzs.base.BaseApiController;
import com.mindskip.xzs.base.RestResponse;
import com.mindskip.xzs.domain.KnowledgePoint;
import com.mindskip.xzs.domain.Subject;
import com.mindskip.xzs.domain.other.KnowledgePointPage;
import com.mindskip.xzs.service.KnowledgeService;
import com.mindskip.xzs.service.SubjectService;
import com.mindskip.xzs.utility.PageInfoHelper;
import com.mindskip.xzs.viewmodel.admin.knowledge.KnowledgeEditRequestVM;
import com.mindskip.xzs.viewmodel.admin.knowledge.KnowledgePageRequestVM;
import com.mindskip.xzs.viewmodel.admin.knowledge.KnowledgeResponseVM;
import com.github.pagehelper.PageInfo;
import lombok.AllArgsConstructor;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
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("AdminKnowledgeController")
@RequestMapping(value = "/api/admin/knowledge")
@AllArgsConstructor
public class KnowledgeController extends BaseApiController {

    private final KnowledgeService knowledgeService;
    private final SubjectService subjectService;

    /**
     * 知识点分页
     *
     * @param model the model
     * @return the rest response
     */
    @RequestMapping(value = "/page", method = RequestMethod.POST)
    public RestResponse<PageInfo<KnowledgeResponseVM>> page(@RequestBody KnowledgePageRequestVM model) {
        PageInfo<KnowledgePointPage> pageInfo = knowledgeService.page(model);
        PageInfo<KnowledgeResponseVM> page = PageInfoHelper.copyMap(pageInfo, e -> {
            KnowledgeResponseVM vm = modelMapper.map(e, KnowledgeResponseVM.class);
            Subject subject = subjectService.selectById(e.getSubjectId());
            vm.setSubjectName(subject.getName());
            vm.setLevelName(subject.getLevelName());
            return vm;
        });
        return RestResponse.ok(page);
    }

    /**
     * 知识点编辑
     *
     * @param model the model
     * @return the rest response
     */
    @RequestMapping(value = "/edit", method = RequestMethod.POST)
    public RestResponse edit(@RequestBody @Valid KnowledgeEditRequestVM model) {
        KnowledgePoint knowledge = modelMapper.map(model, KnowledgePoint.class);
        knowledge.setDeleted(false);
        knowledgeService.insertByFilter(knowledge);
        return RestResponse.ok(knowledge);
    }

    /**
     * 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);
    }

    /**
     * 知识点删除
     *
     * @param id the id
     * @return the rest response
     */
    @RequestMapping(value = "/delete/{id}", method = RequestMethod.POST)
    public RestResponse delete(@PathVariable Integer id) {
        KnowledgePoint knowledge = knowledgeService.selectById(id);
        knowledge.setDeleted(true);
        knowledgeService.updateByIdFilter(knowledge);
        return RestResponse.ok();
    }

    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);
            }
        });
    }
}