import React, { PureComponent } from 'react';
import Graph from '../src';

class App extends PureComponent {
  onLoad(graphInstance) {
    this.graphInstance = graphInstance;

    console.log('graph loaded:', graphInstance);
  }

  onMove() {
    if (!this.graphInstance) {
      return false;
    }
    console.log('graph moved');
  }

  onFitView() {
    if (!this.graphInstance) {
      return false;
    }
    this.graphInstance.fitView();
  }

  render() {
    const elements = [
      { data: { id: '1', label: 'Tests', type: 'input' }, position: { x: 0, y: 0 } },
      { data: { id: '2', label: 'This is a node This is a node This is a node This is a node' }, position: { x: 100, y: 100 } },
      { data: { id: '3', label: 'This is a node' }, position: { x: 100, y: 200 }, style: { background: '#222', color: '#fff' } },
      { data: { id: '4', label: 'nody nodes', type: 'output' }, position: { x: 50, y: 300 } },
      { data: { id: '5', label: 'Another node', type: 'output' }, position: { x: 400, y: 300 } },
      { data: { source: '1', target: '2' } },
      { data: { source: '2', target: '3' } },
      { data: { source: '3', target: '4' } },
      { data: { source: '3', target: '5' } }
    ];

    return (
      <Graph
        elements={elements}
        onNodeClick={node => console.log(node)}
        style={{ width: '100%', height: '100%' }}
        onLoad={graphInstance => this.onLoad(graphInstance)}
        onMove={() => this.onMove()}
      >
        <button
          type="button"
          style={{ position: 'absolute', right: '10px', bottom: '10px' }}
          onClick={() => this.onFitView()}
        >
          fit
        </button>
      </Graph>
    );
  }
}

export default App;