package savewc

import (
	"context"
	"encoding/json"
	"fmt"
	"github.com/go-redis/redis/v8"
	"github.com/themakers/hlog"
	"penahub.gitlab.yandexcloud.net/backend/quiz/common.git/model"
	"time"
)

type DepsForClient struct {
	WorkerSendClientCh chan model.Answer
	Redis              *redis.Client
}

type SaveForClient struct {
	deps    DepsForClient
	errChan chan<- error
	logger  hlog.Logger
}

func NewSaveClientWorker(deps DepsForClient, errChan chan<- error, logger hlog.Logger) *SaveForClient {
	return &SaveForClient{
		deps:    deps,
		errChan: errChan,
		logger:  logger,
	}
}

func (w *SaveForClient) Start(ctx context.Context) {

	for {
		select {
		case answer, ok := <-w.deps.WorkerSendClientCh:
			if !ok {
				return
			}
			fmt.Println("SAVECLINT")
			err := w.saveAnswer(ctx, answer)
			if err != nil {
				fmt.Println("Error save answer")
				w.errChan <- err
			}

		case <-ctx.Done():
			fmt.Println("Save for client worker terminated")
			return
		}
	}
}

func (w *SaveForClient) saveAnswer(ctx context.Context, answer model.Answer) error {
	answerJSON, err := json.Marshal(answer)
	if err != nil {
		fmt.Println("Error marshal answer to redis", err)
		w.errChan <- err
		return err
	}

	key := fmt.Sprintf("answer:%d", time.Now().UnixNano())

	err = w.deps.Redis.Set(ctx, key, answerJSON, 0).Err()
	if err != nil {
		fmt.Println("Error saving answer to redis", err)
		w.errChan <- err
		return err
	}

	return nil
}