import React, { useCallback } from 'react';
import ReactFlow, { Node, Edge, useNodesState, useEdgesState, Position, Connection, addEdge } from 'reactflow';

import styles from './touch-device.module.css';

const initialNodes: Node[] = [
  {
    id: '1',
    data: { label: 'Node 1' },
    position: { x: 100, y: 100 },
    sourcePosition: Position.Right,
    targetPosition: Position.Left,
  },
  {
    id: '2',
    data: { label: 'Node 2' },
    position: { x: 300, y: 100 },
    sourcePosition: Position.Right,
    targetPosition: Position.Left,
  },
];

const initialEdges: Edge[] = [];

const TouchDeviceFlow = () => {
  const [nodes, , onNodesChange] = useNodesState(initialNodes);
  const [edges, setEdges, onEdgesChange] = useEdgesState(initialEdges);
  const onConnect = useCallback((connection: Connection) => setEdges((eds) => addEdge(connection, eds)), [setEdges]);
  const onConnectStart = useCallback(() => console.log('connect start'), []);
  const onConnectEnd = useCallback(() => console.log('connect end'), []);
  const onClickConnectStart = useCallback(() => console.log('click connect start'), []);
  const onClickConnectEnd = useCallback(() => console.log('click connect end'), []);

  return (
    <ReactFlow
      nodes={nodes}
      edges={edges}
      onConnect={onConnect}
      onNodesChange={onNodesChange}
      onEdgesChange={onEdgesChange}
      onConnectStart={onConnectStart}
      onConnectEnd={onConnectEnd}
      onClickConnectStart={onClickConnectStart}
      onClickConnectEnd={onClickConnectEnd}
      className={styles.flow}
    />
  );
};

export default TouchDeviceFlow;