import React, { useRef, useState, DragEvent, useEffect } from "react";
import { Paper, Box, Typography, Button, Tooltip } from "@mui/material";
import { X, Info, Plus, Play } from "lucide-react";

import { toast } from "react-toastify";

interface VideoPreviewCardProps {
  title: string;
  videoId: string | null | undefined;
  onVideoClick: () => void;
  onDeleteVideoClick: () => void;
  onSelectVideoClick: (file?: File) => void;
  tooltipText?: string;
  className?: string;
}

export const VideoPreviewCard: React.FC<VideoPreviewCardProps> = ({
  title,
  videoId,
  onVideoClick,
  onDeleteVideoClick,
  onSelectVideoClick,
  tooltipText,
  className,
}) => {
  const fileInputRef = useRef<HTMLInputElement>(null);
  const [isDragOver, setIsDragOver] = useState(false);
  const token = localStorage.getItem("token");

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

  const handleZoneClick = () => {
    fileInputRef.current?.click();
  };

  const handleFileInputChange = async (
    event: React.ChangeEvent<HTMLInputElement>
  ) => {
    const file = event.target.files?.[0];
    if (file) {
      if (file.type.startsWith("video/")) {
        onSelectVideoClick(file);
      } else {
        toast.error("Пожалуйста, выберите видео файл");
      }
    }

    event.target.value = "";
  };

  const handleDragOver = (event: DragEvent<HTMLDivElement>) => {
    event.preventDefault();
    event.stopPropagation();
    setIsDragOver(true);
  };

  const handleDragLeave = (event: DragEvent<HTMLDivElement>) => {
    event.preventDefault();
    event.stopPropagation();
    setIsDragOver(false);
  };

  const handleDrop = async (event: DragEvent<HTMLDivElement>) => {
    event.preventDefault();
    event.stopPropagation();
    setIsDragOver(false);

    const files = event.dataTransfer.files;
    if (files && files.length > 0) {
      const file = files[0];
      if (file.type.startsWith("video/")) {
        onSelectVideoClick(file);
      } else {
        toast.error("Пожалуйста, выберите видео файл");
      }
    }
  };

  return (
    <Paper
      elevation={2}
      sx={{
        padding: 2,
        display: "flex",
        flexDirection: "column",
        alignItems: "center",
        gap: 1,
        flex: 1,
        minWidth: 150,
        width: "min-content",
        mx: "auto",
      }}
      className={className}
    >
      <Box sx={{ display: "flex", alignItems: "center" }}>
        <Typography variant="subtitle2" gutterBottom sx={{ mb: 0, mr: 0.5 }}>
          {title}
        </Typography>
        {tooltipText && (
          <Tooltip title={tooltipText}>
            <Info size={16} color="gray" style={{ cursor: "pointer" }} />
          </Tooltip>
        )}
      </Box>
      <Box
        sx={{
          position: "relative",
          width: "200px",
          height: "200px",
          display: "flex",
          alignItems: "center",
          justifyContent: "center",
          borderRadius: 1,
          mb: 1,
          cursor: videoId ? "pointer" : "default",
        }}
        onClick={onVideoClick}
      >
        {videoId && (
          <button
            className="absolute top-2 right-2 z-10"
            onClick={(e) => {
              e.stopPropagation();
              onDeleteVideoClick();
            }}
          >
            <X color="red" />
          </button>
        )}
        {videoId ? (
          <Box
            sx={{ position: "relative", width: "100%", height: "100%" }}
            className={className}
          >
            <video
              src={`${
                import.meta.env.VITE_KRBL_MEDIA
              }${videoId}/download?token=${token}`}
              style={{
                width: "100%",
                height: "100%",
                objectFit: "cover",
                borderRadius: 4,
              }}
              muted
            />
            <Box
              sx={{
                position: "absolute",
                top: "50%",
                left: "50%",
                transform: "translate(-50%, -50%)",
                backgroundColor: "rgba(0, 0, 0, 0.5)",
                borderRadius: "50%",
                width: 40,
                height: 40,
                display: "flex",
                alignItems: "center",
                justifyContent: "center",
              }}
            >
              <Play size={20} color="white" />
            </Box>
          </Box>
        ) : (
          <div className="w-full flex flex-col items-center justify-center gap-3">
            <div
              className="flex flex-col p-5 items-center justify-center gap-3"
              style={{
                border: "2px dashed #ccc",
                borderRadius: 1,
                cursor: "pointer",
              }}
              onClick={handleZoneClick}
              onDragOver={handleDragOver}
              onDragLeave={handleDragLeave}
              onDrop={handleDrop}
            >
              <p className="text-center">Перетащите файл</p>
            </div>

            <p>или</p>
            <Button
              variant="contained"
              color="primary"
              startIcon={<Plus color="white" size={18} />}
              onClick={(e) => {
                e.stopPropagation();
                onSelectVideoClick();
              }}
            >
              Выбрать файл
            </Button>
            {/* Hidden file input */}
            <input
              type="file"
              ref={fileInputRef}
              onChange={handleFileInputChange}
              style={{ display: "none" }}
              accept="video/*"
            />
          </div>
        )}
      </Box>
    </Paper>
  );
};
