import React, { PropTypes } from 'react'
import CSSModules from 'browser/lib/CSSModules'
import styles from './MarkdownEditor.styl'
import CodeEditor from 'browser/components/CodeEditor'
import MarkdownPreview from 'browser/components/MarkdownPreview'

class MarkdownEditor extends React.Component {
  constructor (props) {
    super(props)
    
    this.state = {
      status: 'CODE'
    }
  }

  handleChange (e) {
    this.value = this.refs.code.value
    this.props.onChange(e)
  }

  handleContextMenu (e) {
    let newStatus = this.state.status === 'PREVIEW'
      ? 'CODE'
      : 'PREVIEW'
    this.setState({
      status: newStatus
    }, () => {
      if (newStatus === 'CODE') {
        this.refs.code.focus()
      } else {
        this.refs.code.blur()
        this.refs.preview.focus()
      }
    })
  }

  reload () {
    this.refs.code.reload()
  }

  render () {
    let { className, value } = this.props

    return (
      <div className={className == null
          ? 'MarkdownEditor'
          : `MarkdownEditor ${className}`
        }
        onContextMenu={(e) => this.handleContextMenu(e)}
      >
        <CodeEditor styleName='codeEditor'
          ref='code'
          mode='markdown'
          value={value}
          onChange={(e) => this.handleChange(e)}
        />
        <MarkdownPreview styleName={this.state.status === 'PREVIEW'
            ? 'preview'
            : 'preview--hide'
          }
          style={this.props.ignorePreviewPointerEvents
            ? {pointerEvents: 'none'} : {}
          }
          ref='preview'
          onContextMenu={(e) => this.handleContextMenu(e)}
          tabIndex='0'
          value={value}
        />
      </div>
    )
  }
}

MarkdownEditor.propTypes = {
  className: PropTypes.string,
  value: PropTypes.string,
  onChange: PropTypes.func,
  ignorePreviewPointerEvents: PropTypes.bool
}

export default CSSModules(MarkdownEditor, styles)