package nju.seec.helper.controller;

import com.fasterxml.jackson.core.JsonProcessingException;
import nju.seec.helper.aspect.auth.Auth;
import nju.seec.helper.controller.response.PageResponse;
import nju.seec.helper.dao.CourseDAO;
import nju.seec.helper.dao.SlideDAO;
import nju.seec.helper.dto.LoginUser;
import nju.seec.helper.service.QuestionService;
import nju.seec.helper.util.enums.ExceptionType;
import nju.seec.helper.util.enums.QuizState;
import nju.seec.helper.util.enums.SlideState;
import nju.seec.helper.util.enums.UserType;
import nju.seec.helper.util.exception.HelperException;
import nju.seec.helper.vo.CourseVO;
import nju.seec.helper.vo.SlideVO;
import nju.seec.helper.vo.quiz.ChoiceQuestionVO;
import nju.seec.helper.vo.quiz.QuestionVO;
import nju.seec.helper.vo.quiz.QuizVO;
import nju.seec.helper.vo.quiz.TrueOrFalseQuestionVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.web.PageableDefault;
import org.springframework.expression.ParseException;
import org.springframework.web.bind.annotation.*;

import java.util.*;

import static nju.seec.helper.controller.QuizController.objectMapper;
/**
 * 题库
 *
 * @doc http://47.100.18.120:3000/SEEC-BOK/API-DOC/src/master/helper/api/Quiz-%e6%b5%8b%e8%af%95.md
 */
@RestController
@RequestMapping("/api/question")
public class QuestionController {
    @Autowired
    private CourseDAO courseDAO;
    @Autowired
    private SlideDAO slideDAO;
    @Autowired
    private QuestionService questionService;
    /**
     * 获得题目列表
     */
    @Auth(roles = {UserType.TEACHER}, message = "获得题目列表")
    @GetMapping("")
    public Map getQuestionList(LoginUser user, String stem,@PageableDefault(Integer.MAX_VALUE) Pageable pageable) throws JsonProcessingException {

        final Page<QuestionVO> page = questionService.getQuestionList(user, stem, pageable);
        Map ret=new LinkedHashMap(2);
        ret.put("questions",page.getContent());
        ret.put("page",PageResponse.PageInfo.of(page.getNumber()+1, page.getSize(), page.getTotalPages(), Long.valueOf(page.getTotalElements()).intValue()));
        return ret;
    }

    /**
     * 获得题目列表
     */
    @Auth(roles = {UserType.TEACHER}, message = "获得题目详情")
    @GetMapping("/{questionId}")
        public QuestionVO getQuestion(LoginUser user,@PathVariable("questionId") String questionId) throws JsonProcessingException {
        return questionService.getQuestion(questionId);
    }


    /**
     * 创建题目
     */
    @Auth(roles = {UserType.TEACHER}, message = "创建题目")
    @PostMapping("")
    public QuestionVO PostQuestion(LoginUser user,  @RequestBody Map question) {

        if(question.get("kind")==null){throw HelperException.of(ExceptionType.PARAM_ERROR,"no kind");}
        String kind = (String)question.get("kind");
        QuestionVO newQuestion=null;
        switch (kind){
            case "CHOICE":
                newQuestion =  (objectMapper.convertValue(question, ChoiceQuestionVO.class));
                return questionService.newQuestion(newQuestion);
            case "TRUE_FALSE":
                newQuestion =  (objectMapper.convertValue(question, TrueOrFalseQuestionVO.class));
                return questionService.newQuestion(newQuestion);
        }

        throw new ParseException('1',"parse failed:"+question.toString());
    }

    /**
     * 更新题目
     */
    @Auth(roles = {UserType.TEACHER}, message = "更新题目")
    @PutMapping("/{questionId}")
    public QuestionVO updateQuestion(LoginUser user, @RequestBody Map question, @PathVariable("questionId") String questionId) {

        if(question.get("kind")==null){throw new ParseException('1',"no kind");}
        String kind = (String)question.get("kind");
        QuestionVO newQuestion=null;
        switch (kind){
            case "CHOICE":
                newQuestion= (objectMapper.convertValue(question, ChoiceQuestionVO.class));
                return questionService.updateQuestion(newQuestion);
            case "TRUE_FALSE":
                newQuestion = (objectMapper.convertValue(question, TrueOrFalseQuestionVO.class));
                return questionService.updateQuestion(newQuestion);
        }
        throw new ParseException('1',"parse failed:"+question.toString());
    }


    /**
     * 删除题目
     */
    @Auth(roles = {UserType.TEACHER}, message = "删除题目")
    @DeleteMapping("/{questionId}")
    public Map deleteQuestion(LoginUser user, @PathVariable("questionId") String questionId) {

        questionService.deleteQuestion(questionId);
        Map map=new HashMap();
        map.put("message","success");
        return map;
    }
}