import { Box, TextField, Typography, Paper } from "@mui/material";
import { Edit } from "@refinedev/mui";
import { useForm } from "@refinedev/react-hook-form";
import { Controller, FieldValues } from "react-hook-form";
import { useParams } from "react-router";
import React, { useState, useEffect, useMemo } from "react";
import ReactMarkdown from "react-markdown";
import { useList } from "@refinedev/core";

import { MarkdownEditor, LinkedItems } from "@components";
import { MediaItem, mediaFields } from "./types";
import "easymde/dist/easymde.min.css";
import { EVERY_LANGUAGE, Languages, languageStore, META_LANGUAGE } from "@stores";
import { observer } from "mobx-react-lite";
import { LanguageSelector, MediaView } from "@ui";
import rehypeRaw from "rehype-raw";

const MemoizedSimpleMDE = React.memo(MarkdownEditor);

export const ArticleEdit = observer(() => {
  const { language, setLanguageAction } = languageStore;

  const [articleData, setArticleData] = useState({
    heading: EVERY_LANGUAGE(""),
    body: EVERY_LANGUAGE("")
  });
  const { id: articleId } = useParams<{ id: string }>();
  const simpleMDEOptions = useMemo(
    () => ({
      placeholder: "Введите контент в формате Markdown...",
      spellChecker: false,
    }),
    []
  );

  const {
    saveButtonProps,
    refineCore: { onFinish },
    register,
    control,
    handleSubmit,
    watch,
    formState: { errors },
    setValue,
    getValues,
  } = useForm<{ heading: string; body: string }>({
    refineCoreProps: META_LANGUAGE(language)
  });

  const bodyContent = watch("body");
  const headingContent = watch("heading");

  useEffect(() => {
    console.log(bodyContent)
  }, [bodyContent])

  useEffect(() => {
    console.log(articleData)
  }, [articleData])

  useEffect(() => {
    console.log("Trying to udpate")
    //setHeadingPreview(articleData.heading[language] ?? "");
    //setPreview(articleData.body[language] ?? "");
    if(articleData.heading[language])
      setValue("heading", articleData.heading[language]);
    if(articleData.body[language])
      setValue("body", articleData.body[language]);
  }, [language]);

  function updateTranslations(update: boolean = true) {
    const newArticleData = {
      heading: {
        ...articleData.heading,
        [language]: watch("heading") ?? "",
      },
      body: {
        ...articleData.body,
        [language]: watch("body") ?? "",
      }
    }
    if(update) setArticleData(newArticleData);
    return newArticleData;
  }

  const handleLanguageChange = (lang: Languages) => {
    updateTranslations();
    setLanguageAction(lang);
    console.log("Setting preview to", articleData.body[lang] ?? "")
  };

  const handleFormSubmit = handleSubmit((values: FieldValues) => {
    return onFinish({
      translations: updateTranslations(false)
    });
  });

  const { data: mediaData, refetch } = useList<MediaItem>({
    resource: `article/${articleId}/media`,
  });

  useEffect(() => {
    return () => {
      setLanguageAction("ru");
    };
  }, [setLanguageAction]);

  return (
    <Edit saveButtonProps={{
      ...saveButtonProps,
      onClick: handleFormSubmit
    }}
    >
      <Box sx={{ display: "flex", gap: 2 }}>
        {/* Форма редактирования */}
        <Box sx={{ display: "flex", flex: 1, flexDirection: "column", gap: 2 }}>
          
          <LanguageSelector action={handleLanguageChange} />
          <Box
            component="form"
            sx={{ flex: 1, display: "flex", flexDirection: "column" }}
            autoComplete="off"
          >
            <TextField
              {...register("heading", {
                required: "Это поле является обязательным",
              })}
              error={!!errors?.heading}
              helperText={errors?.heading?.message as string}
              margin="normal"
              fullWidth
              slotProps={{inputLabel: {shrink: true}}}
              type="text"
              label="Заголовок *"
              name="heading"
            />

            <Controller
              control={control}
              name="body"
              //rules={{ required: "Это поле является обязательным" }}
              defaultValue=""
              render={({ field: { onChange, value } }) => (
                <MemoizedSimpleMDE
                  value={value} // markdown
                  onChange={onChange}
                  options={simpleMDEOptions}
                  className="my-markdown-editor"
                />
              )}
            />

            {articleId && (
              <LinkedItems<MediaItem>
                type="edit"
                parentId={articleId}
                parentResource="article"
                childResource="media"
                fields={mediaFields}
                title="медиа"
                onUpdate={refetch}
              />
            )}
          </Box>
        </Box>

        {/* Блок предпросмотра */}
        <Paper
          sx={{
            flex: 1,
            p: 2,
            maxHeight: "calc(100vh - 200px)",
            overflowY: "auto",
            position: "sticky",
            top: 16,
            borderRadius: 2,
            border: "1px solid",
            borderColor: "primary.main",
            bgcolor: (theme) =>
              theme.palette.mode === "dark" ? "background.paper" : "#fff",
          }}
        >
          <Typography variant="h6" gutterBottom color="primary">
            Предпросмотр
          </Typography>

          {/* Заголовок статьи */}
          <Typography
            variant="h4"
            gutterBottom
            sx={{
              color: (theme) =>
                theme.palette.mode === "dark" ? "grey.300" : "grey.800",
              mb: 3,
            }}
          >
            {headingContent}
          </Typography>

          {/* Markdown контент */}
          <Box
            sx={{
              "& img": {
                maxWidth: "100%",
                height: "auto",
                borderRadius: 1,
              },
              "& h1, & h2, & h3, & h4, & h5, & h6": {
                color: "primary.main",
                mt: 2,
                mb: 1,
              },
              "& p": {
                mb: 2,
                color: (theme) =>
                  theme.palette.mode === "dark" ? "grey.300" : "grey.800",
              },
              "& a": {
                color: "primary.main",
                textDecoration: "none",
                "&:hover": {
                  textDecoration: "underline",
                },
              },
              "& blockquote": {
                borderLeft: "4px solid",
                borderColor: "primary.main",
                pl: 2,
                my: 2,
                color: "text.secondary",
              },
              "& code": {
                bgcolor: (theme) =>
                  theme.palette.mode === "dark" ? "grey.900" : "grey.100",
                p: 0.5,
                borderRadius: 0.5,
                color: "primary.main",
              },
            }}
          >
            <ReactMarkdown rehypePlugins={[rehypeRaw]}>{bodyContent}</ReactMarkdown>
          </Box>

          {/* Привязанные медиа */}
          {mediaData?.data && mediaData.data.length > 0 && (
            <Box sx={{ mb: 3 }}>
              <Typography variant="subtitle1" gutterBottom color="primary">
                Привязанные медиа:
              </Typography>
              <Box
                sx={{
                  display: "flex",
                  gap: 1,
                  flexWrap: "wrap",
                  mb: 2,
                }}
              >
                {mediaData.data.map((media) => (
                  <Box
                    key={media.id}
                    sx={{
                      display: "flex",
                      width: "45%",
                      height: "45%",
                      aspectRatio: "1/1",
                      borderRadius: 1,
                      overflow: "hidden",
                      border: "1px solid",
                      borderColor: "primary.main",
                    }}
                  >
                    <MediaView media={media} />
                    {/* <img
                      src={`${import.meta.env.VITE_KRBL_MEDIA}${
                        media.id
                      }/download?token=${localStorage.getItem(TOKEN_KEY)}`}
                      alt={media.media_name}
                      style={{
                        width: "100%",
                        height: "100%",
                        objectFit: "cover",
                      }}
                    /> */}
                  </Box>
                ))}
              </Box>
            </Box>
          )}
        </Paper>
      </Box>
    </Edit>
  );
});