package edu.nju.service;

import edu.nju.dao.*;
import edu.nju.entities.*;
import edu.nju.model.CrowdReviewReportDTO;
import edu.nju.model.CrowdReviewReportVO;
import edu.nju.model.ReviewPaperVO;
import org.json.JSONArray;
import org.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.text.SimpleDateFormat;
import java.util.*;

@Service
public class ReviewPaperService {

    @Autowired
    ReviewItemDao itemDao;

    @Autowired
    ReviewAnswerDao answerDao;

    @Autowired
    ReviewService reviewService;

    @Autowired
    ReviewReportDao reviewReportDao;

    @Autowired
    ReviewPaperJsonDao reviewPaperJsonDao;

    @Autowired
    ReviewPaperDao reviewPaperDao;

    @Autowired
    ReviewJobDao reviewJobDao;

    @Autowired
    ReviewWorkerDao reviewWorkerDao;

    @Autowired
    ReviewGroupDao reviewGroupDao;


    public ReviewPaperJson getReviewPaperJson(String paperId) {
        return reviewPaperJsonDao.findJsonByPaper(paperId);
    }

    public ReviewPaper getPaper(String paperId){
        return reviewPaperDao.findPaper(paperId);
    }

    public List<ReviewReport> getReportsByPaperId(String paperId){
        return reviewReportDao.getReportsByPaperId(paperId);
    }

    public List<ReviewPaper> getPapers(){
        return reviewPaperDao.findPapers();
    }

    public CrowdReviewReportVO uploadReport(CrowdReviewReportDTO crowdReviewReportDTO){
        JSONArray reportArray= new JSONObject(crowdReviewReportDTO).getJSONArray("crowdReviewReportItems");
        try {
            String paperName=crowdReviewReportDTO.getName();
            String paperType=crowdReviewReportDTO.getType();
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            String paperId = reviewPaperDao.save(new ReviewPaper(paperName,df.format(System.currentTimeMillis()),paperType));
            String paperJson=initPaperJson(reportArray,paperName,Long.toString(System.currentTimeMillis()),paperType);
            reviewPaperJsonDao.save(new ReviewPaperJson(paperId,paperJson));
            for (int i = 0; i < reportArray.length(); i++) {
                JSONObject reportObject = reportArray.getJSONObject(i);
                saveReport(reportObject, paperId);
            }
            String testUrl="http://47.99.140.117:9004/changePaper?id=";
            return new CrowdReviewReportVO("success",testUrl+paperId);
        } catch (Exception e) {
            return new CrowdReviewReportVO("fail",e.getMessage());
        }
    }

    private String initPaperJson(JSONArray reportArray,String name, String createTime, String type) throws Exception{
        try {
            JSONObject object=new JSONObject();
            object.put("description","");
            object.put("name",name);
            object.put("create_time",createTime);
            object.put("type",type);
            object.put("application_url","");
            object.put("requirement_url","");
            object.put("report_list",reportArray);
            object.put("item_group_list",new JSONArray());
            return object.toString();
        }catch (Exception e){
            throw new Exception(e.getMessage());
        }
    }

    public JSONObject uploadPaper(String paperJson){
        JSONObject object = new JSONObject();
        String result=checkPaper(paperJson);
        if(!result.equals("success")){
            object.put("status","fail");
            object.put("message",result);
            return object;
        }
        try {
            JSONObject jsonObject = new JSONObject(paperJson);
            ReviewPaperVO reviewPaperVO = getReviewPaperVO(jsonObject);
            reviewPaperVO.setCreate_time(Long.toString(System.currentTimeMillis()));
            ReviewPaper reviewPaper = new ReviewPaper(reviewPaperVO);
            String paperId=reviewPaperDao.save(reviewPaper);
            reviewPaperJsonDao.save(new ReviewPaperJson(paperId,paperJson));
            saveReportAndItem(paperId, jsonObject);
            object.put("status","success");
            object.put("paperId",paperId);
        }catch (Exception e){
            object.put("status","fail");
            object.put("message",e.getMessage());
        }
        return object;
    }

    public JSONObject updatePaper(String paperId,String paperJson){
        JSONObject object = new JSONObject();
        String result=checkPaper(paperJson);
        if(!result.equals("success")){
            object.put("status","fail");
            object.put("message",result);
            return object;
        }
        try {
            JSONObject jsonObject = new JSONObject(paperJson);
            ReviewPaperVO reviewPaperVO = getReviewPaperVO(jsonObject);
            ReviewPaper reviewPaper = reviewPaperDao.findPaper(paperId);
            reviewPaper.setReviewPaper(reviewPaperVO);
            reviewPaperDao.save(reviewPaper);  //实际是update
            reviewPaperJsonDao.update(paperId, paperJson);
            reviewReportDao.removeByPaper(paperId);
            itemDao.removeByPaper(paperId);
            saveReportAndItem(paperId, jsonObject);
            object.put("status","success");
            object.put("paperId",paperId);
        }catch (Exception e){
            object.put("status","fail");
            object.put("message",e.getMessage());
    }
        return object;
    }

    private void saveReportAndItem(String paperId,JSONObject jsonObject)throws Exception{
        try {
            JSONArray reportArray = jsonObject.getJSONArray("report_list");
            HashMap<Integer, String> reportIndexToId = new HashMap<>();
            for (int i = 0; i < reportArray.length(); i++) {
                JSONObject reportObject = reportArray.getJSONObject(i);
                int reportIndex = reportObject.getInt("index");
                String id = saveReport(reportObject, paperId);
                reportIndexToId.put(reportIndex, id);
            }

            JSONArray itemGroupArray = jsonObject.getJSONArray("item_group_list");
            //save item
            //item index-id
            HashMap<String, Integer> itemIdToOptionNum = new HashMap<>();
            HashMap<Integer, String> itemIndexToId = new HashMap<>();
            for (int i = 0; i < itemGroupArray.length(); i++) {
                JSONObject itemGroupObject = itemGroupArray.getJSONObject(i);
                saveItem(itemGroupObject, paperId, itemIdToOptionNum, reportIndexToId, itemIndexToId);
            }
        }catch (Exception e){
            throw new Exception(e.getMessage());
        }
    }

    private ReviewPaperVO getReviewPaperVO(JSONObject jsonObject)throws Exception{
        try {
            String description = jsonObject.getString("description");
            String name = jsonObject.getString("name");
            String time = jsonObject.getString("create_time");
            String type = jsonObject.getString("type");
            String applicationLocation = jsonObject.getString("application_url");
            String requirementLocation = jsonObject.getString("requirement_url");
            ReviewPaperVO reviewPaperVO=new ReviewPaperVO(description, name, time, type, applicationLocation, requirementLocation);
            return reviewPaperVO;
        }catch (Exception e){
            throw new Exception(e.getMessage());
        }
    }

    private String saveReport(JSONObject reportObject,String paper_id)throws Exception{
        try {
            JSONArray imgArray=new JSONArray();
            if(reportObject.has("img_url")) {
                imgArray = reportObject.getJSONArray("img_url");
            }
            List<String> img_urls=new ArrayList<>();
            for(int i=0;i<imgArray.length();i++){
                img_urls.add(String.valueOf(imgArray.get(i)));
            }
            JSONArray fileArray=new JSONArray();
            if(reportObject.has("file_url")) {
                fileArray = reportObject.getJSONArray("file_url");
            }
            List<String> file_urls=new ArrayList<>();
            for(int i=0;i<fileArray.length();i++){
                file_urls.add(String.valueOf(fileArray.get(i)));
            }
            String name=reportObject.getString("name");
            String description=reportObject.getString("description");
            String original_id=reportObject.getString("original_id");
            ReviewReport reviewReport=new ReviewReport(original_id,paper_id,name,description,img_urls,file_urls);
            return reviewReportDao.save(reviewReport);
        }catch (Exception e){
            throw new Exception("report 创建失败: "+e.getMessage());
        }
    }

    private void saveItem(JSONObject itemGroupObject,String paper_id,HashMap<String,Integer>item_id_to_option_num,HashMap<Integer,String>report_index_to_id,HashMap<Integer,String>item_index_to_id)throws Exception{
        //List<String>itemIds=new ArrayList<>();
        List<String> reportIds=new ArrayList<>();
        try {
            JSONArray reportArray=itemGroupObject.getJSONArray("report_list");
            for (int j=0;j<reportArray.length();j++){
                int reportIndex= Integer.parseInt(String.valueOf(reportArray.get(j)));
                reportIds.add(report_index_to_id.get(reportIndex));
            }
            JSONArray itemArray=itemGroupObject.getJSONArray("item_list");

            for (int j=0;j<itemArray.length();j++){
                JSONObject itemObject=itemArray.getJSONObject(j);
                int index=itemObject.getInt("index");
                Boolean isRequired=itemObject.getBoolean("is_required");
                String description=itemObject.getString("description");
                String type=itemObject.getString("type");
                List<String>options=new ArrayList<>();
                JSONArray optionArray=itemObject.getJSONArray("options");
                for(int k=0;k<optionArray.length();k++){
                    options.add(String.valueOf(optionArray.get(k)));
                }
                ReviewItem item=new ReviewItem(paper_id,isRequired,options,description,reportIds,type);
                String item_id = itemDao.saveItem(item);
//				itemIds.add(item_id);
//				item_id_to_option_num.put(item_id,options.size());
                item_index_to_id.put(index,item_id);
            }
        }catch (Exception e){
            throw new Exception("item 创建失败: "+e.getMessage());
        }
//		try {
//			for(int j=0;j<reportIds.size();j++){
//				ReviewReport report=reviewReportDao.findReviewReport(reportIds.get(j));
//				report.setItem_id(itemIds);
//				reviewReportDao.save(report);
//			}
//		}catch (Exception e){
//			throw new Exception("item创建失败,请检查配置的report_index是否存在！ ");
//		}
    }

    public String checkPaper(String paperJson){
        String result="success";
        try {
            JSONObject jsonObject=new JSONObject(paperJson);
            String description=jsonObject.getString("description");
            String name=jsonObject.getString("name");
            String time=jsonObject.getString("create_time");
            String type=jsonObject.getString("type");
            String application_location=jsonObject.getString("application_url");
            String requirement_location=jsonObject.getString("requirement_url");

            Set<Integer> reportIndexs=new HashSet<>();
            JSONArray reportList=jsonObject.getJSONArray("report_list");
            for(int i=0;i<reportList.length();i++){
                JSONObject report=reportList.getJSONObject(i);
                int index=report.getInt("index");
                if(reportIndexs.contains(index)){
                    throw new Exception("report_list中report的index不能重复");
                }else{
                    reportIndexs.add(index);
                }
                String reportName=report.getString("name");
                String originalId=report.getString("original_id");
                String reportDescription=report.getString("description");
//                JSONArray imgUrls=report.getJSONArray("img_url");
//                JSONArray fileUrls=report.getJSONArray("file_url");

            }

            JSONArray itemGroupArray=jsonObject.getJSONArray("item_group_list");
            Set<Integer>itemReportIndexs=new HashSet<>();

            for(int i=0;i<itemGroupArray.length();i++){
                Set<Integer>itemIndexs=new HashSet<>();
                JSONObject itemGroup=itemGroupArray.getJSONObject(i);
                JSONArray itemReportList=itemGroup.getJSONArray("report_list");
                for(int j=0;j<itemReportList.length();j++){
                    int reportIndex=Integer.parseInt(String.valueOf(itemReportList.get(j)));
                    if(!reportIndexs.contains(reportIndex)){
                        throw new Exception("item_group_list中包含不存在的report ");
                    }else{
                        if(itemReportIndexs.contains(reportIndex)){
                            throw new Exception("item_group_list中的report不能重复");
                        }
                        else{
                            itemReportIndexs.add(reportIndex);
                        }
                    }
                }
                JSONArray itemList=itemGroup.getJSONArray("item_list");
                for(int j=0;j<itemList.length();j++){
                    JSONObject item=itemList.getJSONObject(j);
                    int index=item.getInt("index");
                    if(itemIndexs.contains(index)){
                        throw new Exception("item_group_list中的item_index不能重复");
                    }
                    else {
                        itemIndexs.add(index);
                    }
                    String itemDescription=item.getString("description");
                    Boolean isRequired=item.getBoolean("is_required");
                    String itemType=item.getString("type");
                    JSONArray options=item.getJSONArray("options");
                }
            }


//			JSONArray groupList=jsonObject.getJSONArray("group_list");
//			Set<String>workers=new HashSet<>();
//			for(int i=0;i<groupList.length();i++){
//				JSONObject groupObject=groupList.getJSONObject(i);
//				String groupName=groupObject.getString("name");
//				String groupDescription=groupObject.getString("description");
//				JSONArray workerList=groupObject.getJSONArray("worker_list");
//				for(int j=0;j<workerList.length();j++){
//					String workerId=String.valueOf(workerList.get(j));
//					if(workers.contains(workerId)){
//						throw new Exception("同一个worker不能属于不同的group");
//					}else{
//						workers.add(workerId);
//					}
//				}
//				JSONArray workerReportList=groupObject.getJSONArray("report_list");
//				for(int j=0;j<workerReportList.length();j++){
//					int reportIndex= Integer.parseInt(String.valueOf(workerReportList.get(j)));
//					if(!reportIndexs.contains(reportIndex)){
//						throw new Exception("group_report_list中包含不存在的report ");
//					}
//				}
//			}
        }catch (Exception e){
            return e.getMessage();
        }
        return result;
    }

    public boolean delPaper(String paperId){
        try {
            reviewPaperDao.remove(paperId);
            reviewPaperJsonDao.remove(paperId);
            reviewReportDao.removeByPaper(paperId);
            itemDao.removeByPaper(paperId);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    public String addWorker(String examId,String paperId, List<String>workerList){
        String jobId=reviewJobDao.save(new ReviewJob(examId,paperId,Long.toString(System.currentTimeMillis())));
        List<String>workerIds=new ArrayList<>();
        for(int i=0;i<workerList.size();i++){
            String workerIndex=workerList.get(i);
            String workerId=reviewWorkerDao.save(new ReviewWorker(workerIndex,paperId,examId,jobId));
            workerIds.add(workerId);
        }
        List<ReviewReport>reviewReports=getReportsByPaperId(paperId);
        List<String>reportIds=new ArrayList<>();
        for(int i=0;i<reviewReports.size();i++)
            reportIds.add(reviewReports.get(i).getId());
        reviewGroupDao.save(new ReviewGroup("default","",workerIds,jobId,reportIds));
        return jobId;

    }

    public ReviewWorker getWorker(String workerIndex,String examId){
        return reviewWorkerDao.getWorkerByOriginalId(workerIndex,examId);
    }


}