frontPanel/src/ui_kit/QuizPreview/QuizPreviewLayout.tsx

import { Box, Button, LinearProgress, Paper, Typography } from "@mui/material";
import { questionStore } from "@root/questions";
import {
  decrementCurrentQuestionIndex,
  incrementCurrentQuestionIndex,
  useQuizPreviewStore,
} from "@root/quizPreview";
import { DefiniteQuestionType } from "model/questionTypes/shared";
import { FC, useEffect } from "react";
import { useParams } from "react-router-dom";
import ArrowLeft from "../../assets/icons/questionsPage/arrowLeft";
import Date from "./QuizPreviewQuestionTypes/Date";
import Emoji from "./QuizPreviewQuestionTypes/Emoji";
import File from "./QuizPreviewQuestionTypes/File";
import Images from "./QuizPreviewQuestionTypes/Images";
import Number from "./QuizPreviewQuestionTypes/Number";
import Page from "./QuizPreviewQuestionTypes/Page";
import Rating from "./QuizPreviewQuestionTypes/Rating";
import Select from "./QuizPreviewQuestionTypes/Select";
import Text from "./QuizPreviewQuestionTypes/Text";
import Variant from "./QuizPreviewQuestionTypes/Variant";
import Varimg from "./QuizPreviewQuestionTypes/Varimg";

const QuestionPreviewComponentByType: Record<DefiniteQuestionType, FC<any>> = {
  variant: Variant,
  images: Images,
  varimg: Varimg,
  emoji: Emoji,
  text: Text,
  select: Select,
  date: Date,
  number: Number,
  file: File,
  page: Page,
  rating: Rating,
};

export default function QuizPreviewLayout() {
  const quizId = useParams().quizId ?? 0;
  const listQuestions = questionStore((state) => state.listQuestions);
  const currentQuizStep = useQuizPreviewStore(
    (state) => state.currentQuestionIndex
  );

  const quizQuestions = listQuestions[quizId] ?? [];
  const nonDeletedQuizQuestions = quizQuestions.filter(
    (question) => !question.deleted
  );
  const maxCurrentQuizStep =
    nonDeletedQuizQuestions.length > 0 ? nonDeletedQuizQuestions.length - 1 : 0;
  const currentProgress = Math.floor(
    (currentQuizStep / maxCurrentQuizStep) * 100
  );

  const currentQuestion = nonDeletedQuizQuestions[currentQuizStep];
  const QuestionComponent = currentQuestion
    ? QuestionPreviewComponentByType[
        currentQuestion.type as DefiniteQuestionType
      ]
    : null;

  const questionElement = QuestionComponent ? (
    <QuestionComponent key={currentQuestion.id} question={currentQuestion} />
  ) : null;

  useEffect(
    function resetCurrentQuizStep() {
      if (currentQuizStep > maxCurrentQuizStep) {
        decrementCurrentQuestionIndex();
      }
    },
    [currentQuizStep, maxCurrentQuizStep]
  );

  return (
    <Paper
      className="quiz-preview-draghandle"
      sx={{
        height: "100%",
        display: "flex",
        flexDirection: "column",
        flexGrow: 1,
        borderRadius: "12px",
        pointerEvents: "auto",
      }}
    >
      <Box
        sx={{
          p: "16px",
          whiteSpace: "break-spaces",
          overflowY: "auto",
          flexGrow: 1,
          "&::-webkit-scrollbar": { width: 0 },
        }}
      >
        {questionElement}
      </Box>
      <Box
        sx={{
          mt: "auto",
          p: "16px",
          display: "flex",
          borderTop: "1px solid #E3E3E3",
          alignItems: "center",
        }}
      >
        <Box
          sx={{
            flexGrow: 1,
            display: "flex",
            flexDirection: "column",
            gap: 1,
          }}
        >
          <Typography>
            {nonDeletedQuizQuestions.length > 0
              ? `Вопрос ${currentQuizStep + 1} из ${
                  nonDeletedQuizQuestions.length
                }`
              : "Нет вопросов"}
          </Typography>
          {nonDeletedQuizQuestions.length > 0 && (
            <LinearProgress
              variant="determinate"
              value={currentProgress}
              sx={{
                "&.MuiLinearProgress-colorPrimary": {
                  backgroundColor: "fadePurple.main",
                },
                "& .MuiLinearProgress-barColorPrimary": {
                  backgroundColor: "brightPurple.main",
                },
              }}
            />
          )}
        </Box>
        <Box
          sx={{
            ml: 2,
            display: "flex",
            gap: 1,
          }}
        >
          <Button
            variant="outlined"
            onClick={decrementCurrentQuestionIndex}
            disabled={currentQuizStep === 0}
            sx={{ px: 1, minWidth: 0 }}
          >
            <ArrowLeft />
          </Button>
          <Button
            variant="contained"
            onClick={() => incrementCurrentQuestionIndex(maxCurrentQuizStep)}
            disabled={currentQuizStep >= maxCurrentQuizStep}
          >
            Далее
          </Button>
        </Box>
      </Box>
    </Paper>
  );
}