package grpcserver

import (
	"context"
	"encoding/json"
	"git.hlsq.asia/alex/service-common/db/kafka"
	"git.hlsq.asia/alex/service-common/proto/rs/rspb"
	"git.hlsq.asia/alex/service-common/utils"
	"git.hlsq.asia/alex/service-qgdzs/internal/dao/repository"
)

// 玩法 - 随机答题

// RandomGetQuestion 获取题目
func (s *Server) RandomGetQuestion(ctx context.Context, req *rspb.RandomGetQuestionReq) (*rspb.RandomGetQuestionResp, error) {
	question, err := repository.NewQuestionDao(ctx, s.query).FindByRandom(0)
	if err != nil {
		return nil, utils.ErrorsWrap(err)
	}
	options := make([]string, 0)
	if err = json.Unmarshal([]byte(question.Options), &options); err != nil {
		return nil, utils.ErrorsWrapF(err, "data: %v", question.Options)
	}
	category, _ := repository.NewCategoryDao(ctx, s.query).FindNameBySn(question.CategorySn)
	return &rspb.RandomGetQuestionResp{
		Sn:         question.Sn,
		Question:   question.Question,
		Options:    options,
		Category:   category,
		Difficulty: question.Difficulty,
	}, nil
}

// RandomAnswerQuestion 回答题目
func (s *Server) RandomAnswerQuestion(ctx context.Context, req *rspb.RandomAnswerQuestionReq) (*rspb.RandomAnswerQuestionResp, error) {
	utils.ShouldBindUsn(ctx, &req.USN)

	question, err := repository.NewQuestionDao(ctx, s.query).FindBySn(req.Sn)
	if err != nil {
		return nil, utils.ErrorsWrap(err)
	}
	options := make([]string, 0)
	if err = json.Unmarshal([]byte(question.Options), &options); err != nil {
		return nil, utils.ErrorsWrapF(err, "data: %v", question.Options)
	}
	// 保存答题记录
	if req.USN != 0 {
		kafka.NewProducer().Produce(ctx, &kafka.TopicQuestionAnswer{
			MessageSn:      utils.SnowflakeInstance().Generate().Int64(),
			USN:            req.USN,
			QuestionSn:     question.Sn,
			QuestionAnswer: question.Answer,
			Answer:         req.Answer,
		})

		// 随机答题正确给10分，错误不得分
		if req.Answer == question.Answer {
			kafka.NewProducer().Produce(ctx, &kafka.TopicAddPoint{
				MessageSn: utils.SnowflakeInstance().Generate().Int64(),
				Source:    kafka.AddPointSourceRandom,
				USN:       req.USN,
				Point:     10,
			})
		}
	}
	return &rspb.RandomAnswerQuestionResp{
		Answer:      question.Answer,
		Explanation: question.Explanation,
	}, nil
}