import React, { useEffect, useState } from 'react';
import Box from '@mui/material/Box';
import Plot from 'react-plotly.js';
import TextField from '@mui/material/TextField';
import Tooltip from '@mui/material/Tooltip';
import Button from '@mui/material/Button';
import SendIcon from '@mui/icons-material/Send';

interface Metadata {
  type?: string;
  [key: string]: any;
}

interface ResultData {
  embeddings: number[][] | number[][][];
  documents: string[];
  metadatas: Metadata[];
}

interface PlotData {
  x: number[];
  y: number[];
  z?: number[];
  colors: string[];
  text: string[];
  sizes: number[];
  symbols: string[];
}

interface VectorVisualizerProps {
  result: ResultData;
  connectionBase: string;
  sessionId?: string;
}

interface ChromaResult {
  distances: number[];
  documents: string[];
  ids: string[];
  metadatas: Metadata[];
  query_embedding: number[];
  query?: string;
  vector_embedding?: number[];
}

const VectorVisualizer: React.FC<VectorVisualizerProps> = ({ result, connectionBase, sessionId }) => {
  const [plotData, setPlotData] = useState<PlotData | null>(null);
  const [query, setQuery] = useState<string>('');
  const [queryEmbedding, setQueryEmbedding] = useState<ChromaResult | undefined>(undefined);
  
  useEffect(() => {
    if (!result || !result.embeddings) return;
    if (result.embeddings.length === 0) return;

    const vectors: number[][] = [...result.embeddings as number[][]];
    const documents = [...result.documents || []];
    const metadatas = [...result.metadatas || []];

    if (queryEmbedding !== undefined && queryEmbedding.vector_embedding !== undefined) {
      metadatas.unshift({ type: 'query' });
      documents.unshift(queryEmbedding.query || '');
      vectors.unshift(queryEmbedding.vector_embedding);
    }
    const is2D = vectors.every((v: number[]) => v.length === 2);
    const is3D = vectors.every((v: number[]) => v.length === 3);
    if (!is2D && !is3D) {
      console.error('Vectors are neither 2D nor 3D');
      return;
    }
    console.log('Vectors:', vectors);
    // Placeholder color assignment
    const colorMap: Record<string, string> = {
      'query': '#00ff00',
    };
    const sizeMap: Record<string, number> = {
      'query': 10,
    };
    const symbolMap: Record<string, string> = {
      'query': 'circle',
    };

    const doc_types = metadatas.map(m => m.type || 'unknown');
    const sizes = doc_types.map(type => {
      if (!sizeMap[type]) {
        sizeMap[type] = 5;
      }
      return sizeMap[type];
    });
    const symbols = doc_types.map(type => {
      if (!symbolMap[type]) {
        symbolMap[type] = 'circle';
      }
      return symbolMap[type];
    });
    const colors = doc_types.map(type => {
      if (!colorMap[type]) {
        colorMap[type] = '#ff0000';
      }
      return colorMap[type];
    });

    const x = vectors.map((v: number[]) => v[0]);
    const y = vectors.map((v: number[]) => v[1]);
    const text = documents.map((doc, i) => `Type: ${doc_types[i]}<br>Text: ${doc.slice(0, 100)}...`);
    if (is3D) {
      const z = vectors.map((v: number[]) => v[2]);
      setPlotData({
        x: x,
        y: y,
        z: z,
        colors: colors,
        sizes: sizes,
        symbols: symbols,
        text: text
      });
    } else {
      setPlotData({
        x: x,
        y: y,
        colors: colors,
        sizes: sizes,
        symbols: symbols,
        text: text
      });
    }
  }, [result, queryEmbedding]);

  const handleKeyPress = (event: any) => {
    if (event.key === 'Enter') {
      sendQuery(query);
    }
  };

  const sendQuery = async (query: string) => {
    if (!query.trim()) return;
    setQuery('');

    const response = await fetch(`${connectionBase}/api/similarity/${sessionId}`, {
      method: 'PUT',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        query: query,
      })
    });
    const chroma: ChromaResult = await response.json();
    console.log('Chroma:', chroma);
    setQueryEmbedding(chroma);
  };

  if (!plotData || sessionId === undefined) return (
    <Box sx={{ display: 'flex', flexGrow: 1, justifyContent: 'center', alignItems: 'center' }}>
      <div>Loading visualization...</div>
    </Box>
  );

  return (
    <>
      <Box sx={{ display: 'flex', flexGrow: 1, justifyContent: 'center', alignItems: 'center' }}>
      <Plot 
        data={[
          {
            x: plotData.x,
            y: plotData.y,
            z: plotData.z,
            mode: 'markers',
            marker: {
              size: plotData.sizes,
              symbol: plotData.symbols,
              color: plotData.colors,
              opacity: 0.8,
            },
            text: plotData.text,
            hoverinfo: 'text',
            type: plotData.z?.length ? 'scatter3d' : 'scatter',
          },
        ]}
        useResizeHandler={true}
        config={{ responsive: true }}
        style={{ width: '100%', height: '100%' }}
        layout={{
          autosize: true,
          title: 'Vector Store Visualization',
          xaxis: { title: 'x' },
          yaxis: { title: 'y' },
          zaxis: { title: 'z' },
          margin: { r: 20, b: 10, l: 10, t: 40 },
        }}
      />
      </Box>

      { queryEmbedding !== undefined &&
        <Box sx={{ display: 'flex', flexDirection: 'column', p: 1 }}>
          <Box sx={{ fontSize: '0.8rem', mb: 1 }}>
            Query: {queryEmbedding.query}
          </Box>
        </Box>
      }

      <Box className="Query" sx={{ display: "flex", flexDirection: "row", p: 1 }}>
        <TextField
          variant="outlined"
          fullWidth
          type="text"
          value={query}
          onChange={(e) => setQuery(e.target.value)}
          onKeyDown={handleKeyPress}
          placeholder="Enter query to find related documents..."
          id="QueryInput"
        />
        <Tooltip title="Send">
          <Button sx={{ m: 1 }} variant="contained" onClick={() => { sendQuery(query); }}><SendIcon /></Button>
        </Tooltip>
      </Box>
    </>
  );
};

export type { VectorVisualizerProps, ResultData, Metadata };

export {
  VectorVisualizer
};