import React from 'react';
import ReactDOM from 'react-dom';
import {Editor, EditorState, ContentState, RichUtils, convertToRaw} from 'draft-js';
import htmlToContent from './utils/htmlToContent';
import draftRawToHtml from './utils/draftRawToHtml';

export default class BasicHtmlEditor extends React.Component {
  constructor(props) {
    super(props);
    let { value } = props;

    this.state = {
      editorState: value ?
        EditorState.createWithContent(
          ContentState.createFromBlockArray(htmlToContent(value))
        ) :
        EditorState.createEmpty()};

    // this.focus = () => this.refs.editor.focus();
    this.onChange = (editorState) => {
      let previousContent = this.state.editorState.getCurrentContent();
      this.setState({editorState});

      // only emit html when content changes
      if( previousContent !== editorState.getCurrentContent() ) {
        let raw = convertToRaw( editorState.getCurrentContent() );
        let html = draftRawToHtml(raw);
        this.props.onChange(html);  
      }
    };

    this.handleKeyCommand = (command) => this._handleKeyCommand(command);
    this.toggleBlockType = (type) => this._toggleBlockType(type);
    this.toggleInlineStyle = (style) => this._toggleInlineStyle(style);
  }

  _handleKeyCommand(command) {
    const {editorState} = this.state;
    const newState = RichUtils.handleKeyCommand(editorState, command);
    if (newState) {
      this.onChange(newState);
      return true;
    }
    return false;
  }

  _toggleBlockType(blockType) {
    this.onChange(
      RichUtils.toggleBlockType(
        this.state.editorState,
        blockType
      )
    );
  }

  _toggleInlineStyle(inlineStyle) {
    this.onChange(
      RichUtils.toggleInlineStyle(
        this.state.editorState,
        inlineStyle
      )
    );
  }

  render() {
    const {editorState} = this.state;

    // If the user changes block type before entering any text, we can
    // either style the placeholder or hide it. Let's just hide it now.
    let className = 'RichEditor-editor';
    var contentState = editorState.getCurrentContent();
    if (!contentState.hasText()) {
      if (contentState.getBlockMap().first().getType() !== 'unstyled') {
        className += ' RichEditor-hidePlaceholder';
      }
    }

    return (
      <div className="RichEditor-root">
        <BlockStyleControls
          editorState={editorState}
          onToggle={this.toggleBlockType}
        />
        <InlineStyleControls
          editorState={editorState}
          onToggle={this.toggleInlineStyle}
        />
        <div className={className} /* onClick={this.focus} */>
          <Editor
            blockStyleFn={getBlockStyle}
            customStyleMap={styleMap}
            editorState={editorState}
            handleKeyCommand={this.handleKeyCommand}
            onChange={this.onChange}
            placeholder="Tell a story..."
            ref="editor"
            spellCheck={true}
          />
        </div>
      </div>
    );
  }
}

// Custom overrides for "code" style.
const styleMap = {
  CODE: {
    backgroundColor: 'rgba(0, 0, 0, 0.05)',
    fontFamily: '"Inconsolata", "Menlo", "Consolas", monospace',
    fontSize: 16,
    padding: 2
  }
};

function getBlockStyle(block) {
  switch (block.getType()) {
    case 'blockquote': return 'RichEditor-blockquote';
    default: return null;
  }
}

class StyleButton extends React.Component {
  constructor() {
    super();
    this.onToggle = (e) => {
      e.preventDefault();
      this.props.onToggle(this.props.style);
    };
  }

  render() {
    let className = 'RichEditor-styleButton';
    if (this.props.active) {
      className += ' RichEditor-activeButton';
    }

    return (
      <span className={className} onMouseDown={this.onToggle}>
        {this.props.label}
      </span>
    );
  }
}

const BLOCK_TYPES = [
  {label: 'H1', style: 'header-one'},
  {label: 'H2', style: 'header-two'},
  {label: 'Blockquote', style: 'blockquote'},
  {label: 'UL', style: 'unordered-list-item'},
  {label: 'OL', style: 'ordered-list-item'},
  {label: 'Code Block', style: 'code-block'}
];

const BlockStyleControls = (props) => {
  const {editorState} = props;
  const selection = editorState.getSelection();
  const blockType = editorState
    .getCurrentContent()
    .getBlockForKey(selection.getStartKey())
    .getType();

  return (
    <div className="RichEditor-controls">
      {BLOCK_TYPES.map((type) =>
        <StyleButton
          key={type.label}
          active={type.style === blockType}
          label={type.label}
          onToggle={props.onToggle}
          style={type.style}
        />
      )}
    </div>
  );
};

var INLINE_STYLES = [
  {label: 'Bold', style: 'BOLD'},
  {label: 'Italic', style: 'ITALIC'},
  {label: 'Underline', style: 'UNDERLINE'},
  {label: 'Monospace', style: 'CODE'}
];

const InlineStyleControls = (props) => {
  var currentStyle = props.editorState.getCurrentInlineStyle();
  return (
    <div className="RichEditor-controls">
      {INLINE_STYLES.map(type =>
        <StyleButton
          key={type.label}
          active={currentStyle.has(type.style)}
          label={type.label}
          onToggle={props.onToggle}
          style={type.style}
        />
      )}
    </div>
  );
};

@@ -3860,24 +3860,59 @@
 K_TYPES = %5B%0A
+  %7Blabel: 'P', style: 'unstyled'%7D,%0A
   %7Blabel: 'H

add P to block type so we can set block back to default of paragraph