import { Media, mediaStore } from "@shared";
import { observer } from "mobx-react-lite";
import { useEffect, useState } from "react";
import {
  Dialog,
  DialogTitle,
  DialogContent,
  DialogActions,
  Button,
  TextField,
  List,
  ListItemButton,
  ListItemText,
  Paper,
  Typography,
  InputAdornment,
} from "@mui/material";
import { Search } from "lucide-react";
import { MediaViewer } from "@widgets";

interface SelectMediaDialogProps {
  open: boolean; // Corrected prop name
  onClose: () => void;
  onSelectMedia?: (media: {
    id: string;
    filename: string;
    media_name?: string;
    media_type: number;
  }) => void; // Renamed from onSelectArticle
  onSelectForSightMedia?: (mediaId: string) => void;
  linkedMediaIds?: string[]; // Renamed from linkedArticleIds, assuming it refers to media already in use
  mediaType?: number;
}

export const SelectMediaDialog = observer(
  ({
    open, // Corrected prop name
    onClose,
    onSelectMedia, // Renamed prop
    onSelectForSightMedia,
    linkedMediaIds = [], // Default to empty array if not provided, renamed
    mediaType,
  }: SelectMediaDialogProps) => {
    const { media, getMedia } = mediaStore;
    const [searchQuery, setSearchQuery] = useState("");
    const [hoveredMediaId, setHoveredMediaId] = useState<string | null>(null);
    const [currentHoveredMedia, setCurrentHoveredMedia] =
      useState<Media | null>(null);

    useEffect(() => {
      if (hoveredMediaId) {
        setCurrentHoveredMedia(
          media.find((m) => m.id === hoveredMediaId) ?? null
        );
      }
    }, [hoveredMediaId]);

    const handleClose = () => {
      setHoveredMediaId(null);
      setCurrentHoveredMedia(null);
      onClose();
      setSearchQuery("");
    };

    useEffect(() => {
      getMedia();
    }, [getMedia]);

    // Keyboard event listener for "Enter" key to select hovered media
    useEffect(() => {
      const handleKeyPress = (event: KeyboardEvent) => {
        if (event.key === "Enter") {
          event.preventDefault(); // Prevent browser default action (e.g., form submission)

          if (hoveredMediaId) {
            const mediaItem = media.find((m) => m.id === hoveredMediaId);
            if (mediaItem) {
              if (onSelectForSightMedia) {
                onSelectForSightMedia(mediaItem.id);
              } else if (onSelectMedia) {
                onSelectMedia(mediaItem);
              }
            }
            handleClose();
          }
        }
      };

      window.addEventListener("keydown", handleKeyPress);
      return () => {
        window.removeEventListener("keydown", handleKeyPress);
      };
    }, [hoveredMediaId, onSelectMedia, onClose]); // Dependencies for keyboard listener

    let filteredMedia = media
      .filter((mediaItem) => !linkedMediaIds.includes(mediaItem.id)) // Use mediaItem to avoid name collision
      .filter((mediaItem) =>
        mediaItem.media_name.toLowerCase().includes(searchQuery.toLowerCase())
      );

    if (mediaType) {
      filteredMedia = filteredMedia.filter(
        (mediaItem) => mediaItem.media_type === mediaType
      );
    }

    return (
      <Dialog open={open} onClose={handleClose} maxWidth="lg" fullWidth>
        <DialogTitle>Выберите существующее медиа</DialogTitle>
        <DialogContent
          className="flex gap-4"
          dividers // Adds a divider below the title and above the actions
          sx={{ height: "600px", display: "flex", flexDirection: "row" }} // Fixed height for DialogContent
        >
          <Paper className="w-[66%] flex flex-col" sx={{ p: 2 }}>
            {" "}
            {/* Added padding for consistency */}
            <TextField
              fullWidth
              placeholder="Поиск медиа..." // Changed placeholder for clarity
              value={searchQuery}
              onChange={(e) => setSearchQuery(e.target.value)}
              sx={{ mb: 2, mt: 1 }}
              InputProps={{
                startAdornment: (
                  <InputAdornment position="start">
                    <Search size={20} />
                  </InputAdornment>
                ),
              }}
            />
            <List sx={{ flexGrow: 1, overflowY: "auto" }}>
              {filteredMedia.length > 0 ? (
                filteredMedia.map(
                  (
                    mediaItem // Use mediaItem to avoid confusion
                  ) => (
                    <ListItemButton
                      key={mediaItem.id}
                      onClick={() => setHoveredMediaId(mediaItem.id)} // Call onSelectMedia
                      onDoubleClick={() => {
                        if (onSelectForSightMedia) {
                          onSelectForSightMedia(mediaItem.id);
                        } else if (onSelectMedia) {
                          onSelectMedia(mediaItem);
                        }
                        handleClose();
                      }}
                      selected={hoveredMediaId === mediaItem.id}
                      sx={{
                        borderRadius: 1,
                        mb: 0.5,
                        "&:hover": {
                          backgroundColor: "action.hover",
                        },
                        "&.Mui-selected": {
                          backgroundColor: "primary.main",
                          color: "primary.contrastText",
                          "&:hover": {
                            backgroundColor: "primary.dark",
                          },
                        },
                      }}
                    >
                      <ListItemText
                        primary={
                          mediaItem.media_name
                            ? mediaItem.media_name
                            : mediaItem.filename
                        }
                      />
                    </ListItemButton>
                  )
                )
              ) : (
                <Typography
                  sx={{ mt: 2, textAlign: "center" }}
                  color="text.secondary"
                >
                  Медиа не найдено или все медиа уже прикреплены.
                </Typography>
              )}
            </List>
          </Paper>
          {currentHoveredMedia !== null && hoveredMediaId !== null ? ( // Only render MediaViewer if currentHoveredMedia is found
            <Paper className="w-[33%] h-[100%] flex justify-center items-center">
              <MediaViewer
                media={{
                  id: currentHoveredMedia.id,
                  media_type: currentHoveredMedia.media_type ?? 1, // Provide a default if media_type can be undefined
                  filename: currentHoveredMedia.filename,
                }}
              />
            </Paper>
          ) : (
            <Paper className="w-[33%] h-[100%] flex justify-center items-center">
              <Typography variant="body2" color="text.secondary">
                Наведите на медиа в списке для предпросмотра.
              </Typography>
            </Paper>
          )}
        </DialogContent>

        <DialogActions sx={{ p: 2 }}>
          <Button onClick={handleClose}>Отмена</Button>
          <Button
            variant="contained"
            onClick={() => {
              if (hoveredMediaId) {
                const mediaItem = media.find((m) => m.id === hoveredMediaId);
                if (mediaItem) {
                  if (onSelectForSightMedia) {
                    onSelectForSightMedia(mediaItem.id);
                  } else if (onSelectMedia) {
                    onSelectMedia(mediaItem);
                  }
                }
                handleClose();
              }
            }}
            disabled={hoveredMediaId === null}
          >
            Выбрать
          </Button>
        </DialogActions>
      </Dialog>
    );
  }
);
