content: import React from 'react';
  import CharacterCounter from './character_counter';
  import Button from '../../../components/button';
  import ImmutablePropTypes from 'react-immutable-proptypes';
  import PropTypes from 'prop-types';
  import ReplyIndicatorContainer from '../containers/reply_indicator_container';
  import AutosuggestTextarea from '../../../components/autosuggest_textarea';
  import UploadButtonContainer from '../containers/upload_button_container';
  import { defineMessages, injectIntl } from 'react-intl';
  import SpoilerButtonContainer from '../containers/spoiler_button_container';
  import PrivacyDropdownContainer from '../containers/privacy_dropdown_container';
  import SensitiveButtonContainer from '../containers/sensitive_button_container';
  import EmojiPickerDropdown from '../containers/emoji_picker_dropdown_container';
  import UploadFormContainer from '../containers/upload_form_container';
  import WarningContainer from '../containers/warning_container';
  import { isMobile } from '../../../is_mobile';
  import ImmutablePureComponent from 'react-immutable-pure-component';
  import { length } from 'stringz';
  import { countableText } from '../util/counter';
  
  const allowedAroundShortCode = '><\u0085\u0020\u00a0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029\u0009\u000a\u000b\u000c\u000d';
  
  const messages = defineMessages({
    placeholder: { id: 'compose_form.placeholder', defaultMessage: 'What is on your mind?' },
    spoiler_placeholder: { id: 'compose_form.spoiler_placeholder', defaultMessage: 'Write your warning here' },
    publish: { id: 'compose_form.publish', defaultMessage: 'Toot' },
    publishLoud: { id: 'compose_form.publish_loud', defaultMessage: '{publish}!' },
  });
  
  export default @injectIntl
  class ComposeForm extends ImmutablePureComponent {
  
    static contextTypes = {
      router: PropTypes.object,
    };
  
    static propTypes = {
      intl: PropTypes.object.isRequired,
      text: PropTypes.string.isRequired,
      suggestion_token: PropTypes.string,
      suggestions: ImmutablePropTypes.list,
      spoiler: PropTypes.bool,
      privacy: PropTypes.string,
      spoiler_text: PropTypes.string,
      focusDate: PropTypes.instanceOf(Date),
      caretPosition: PropTypes.number,
      preselectDate: PropTypes.instanceOf(Date),
      is_submitting: PropTypes.bool,
      is_uploading: PropTypes.bool,
      onChange: PropTypes.func.isRequired,
      onSubmit: PropTypes.func.isRequired,
      onClearSuggestions: PropTypes.func.isRequired,
      onFetchSuggestions: PropTypes.func.isRequired,
      onSuggestionSelected: PropTypes.func.isRequired,
      onChangeSpoilerText: PropTypes.func.isRequired,
      onPaste: PropTypes.func.isRequired,
      onPickEmoji: PropTypes.func.isRequired,
      onPickNhoo: PropTypes.func.isRequired,
      showSearch: PropTypes.bool,
      anyMedia: PropTypes.bool,
    };
  
    static defaultProps = {
      showSearch: false,
    };
  
    handleChange = (e) => {
      this.props.onChange(e.target.value);
    }
  
    handleKeyDown = (e) => {
      if (e.keyCode === 13 && (e.ctrlKey || e.metaKey)) {
        this.handleSubmit();
      }
    }
  
    handleSubmit = () => {
      if (this.props.text !== this.autosuggestTextarea.textarea.value) {
        // Something changed the text inside the textarea (e.g. browser extensions like Grammarly)
        // Update the state to match the current text
        this.props.onChange(this.autosuggestTextarea.textarea.value);
      }
  
      // Submit disabled:
      const { is_submitting, is_uploading, anyMedia } = this.props;
      const fulltext = [this.props.spoiler_text, countableText(this.props.text)].join('');
  
      if (is_submitting || is_uploading || length(fulltext) > 500 || (fulltext.length !== 0 && fulltext.trim().length === 0 && !anyMedia)) {
        return;
      }
  
      this.props.onSubmit(this.context.router ? this.context.router.history : null);
    }
  
    onSuggestionsClearRequested = () => {
      this.props.onClearSuggestions();
    }
  
    onSuggestionsFetchRequested = (token) => {
      this.props.onFetchSuggestions(token);
    }
  
    onSuggestionSelected = (tokenStart, token, value) => {
      this.props.onSuggestionSelected(tokenStart, token, value);
    }
  
    handleChangeSpoilerText = (e) => {
      this.props.onChangeSpoilerText(e.target.value);
    }
  
    componentDidUpdate (prevProps) {
      // This statement does several things:
      // - If we're beginning a reply, and,
      //     - Replying to zero or one users, places the cursor at the end of the textbox.
      //     - Replying to more than one user, selects any usernames past the first;
      //       this provides a convenient shortcut to drop everyone else from the conversation.
      if (this.props.focusDate !== prevProps.focusDate) {
        let selectionEnd, selectionStart;
  
        if (this.props.preselectDate !== prevProps.preselectDate) {
          selectionEnd   = this.props.text.length;
          selectionStart = this.props.text.search(/\s/) + 1;
        } else if (typeof this.props.caretPosition === 'number') {
          selectionStart = this.props.caretPosition;
          selectionEnd   = this.props.caretPosition;
        } else {
          selectionEnd   = this.props.text.length;
          selectionStart = selectionEnd;
        }
  
        this.autosuggestTextarea.textarea.setSelectionRange(selectionStart, selectionEnd);
        this.autosuggestTextarea.textarea.focus();
      } else if(prevProps.is_submitting && !this.props.is_submitting) {
        this.autosuggestTextarea.textarea.focus();
      } else if (this.props.spoiler !== prevProps.spoiler) {
        if (this.props.spoiler) {
          this.spoilerText.focus();
        } else {
          this.autosuggestTextarea.textarea.focus();
        }
      }
    }
  
    setAutosuggestTextarea = (c) => {
      this.autosuggestTextarea = c;
    }
  
    setSpoilerText = (c) => {
      this.spoilerText = c;
    }
  
    handleEmojiPick = (data) => {
      const { text }     = this.props;
      const position     = this.autosuggestTextarea.textarea.selectionStart;
      const needsSpace   = data.custom && position > 0 && !allowedAroundShortCode.includes(text[position - 1]);
  
      this.props.onPickEmoji(position, data, needsSpace);
    }
  
    handleNhooSubmit = () => {
      this.autosuggestTextarea.textarea.style.height = 'auto';
      this.handleNhooComplement();
      this.props.onSubmit();
      this.props.onChange('');
    }
  
    handleNhooComplement = () => {
      this.props.onChange(this.props.text + 'んほぉぉ！イッぐぅぅ！！');
    }
  
    handleNhooPick = () => {
      const position     = this.autosuggestTextarea.textarea.selectionStart;
      this._restoreCaret = position + 12;
      this.props.onPickNhoo(position);
    }
  
    render () {
      const { intl, onPaste, showSearch, anyMedia } = this.props;
      const disabled = this.props.is_submitting;
      const text     = [this.props.spoiler_text, countableText(this.props.text)].join('');
      const disabledButton = disabled || this.props.is_uploading || length(text) > 500 || (text.length !== 0 && text.trim().length === 0 && !anyMedia);
      let publishText = '';
  
      if (this.props.privacy === 'private' || this.props.privacy === 'direct') {
        publishText = <span className='compose-form__publish-private'><i className='fa fa-lock' /> {intl.formatMessage(messages.publish)}</span>;
      } else {
        publishText = this.props.privacy !== 'unlisted' ? intl.formatMessage(messages.publishLoud, { publish: intl.formatMessage(messages.publish) }) : intl.formatMessage(messages.publish);
      }
  
      return (
        <div className='compose-form'>
          <WarningContainer />
  
          <ReplyIndicatorContainer />
  
          <div className={`spoiler-input ${this.props.spoiler ? 'spoiler-input--visible' : ''}`}>
            <label>
              <span style={{ display: 'none' }}>{intl.formatMessage(messages.spoiler_placeholder)}</span>
              <input placeholder={intl.formatMessage(messages.spoiler_placeholder)} value={this.props.spoiler_text} onChange={this.handleChangeSpoilerText} onKeyDown={this.handleKeyDown} type='text' className='spoiler-input__input'  id='cw-spoiler-input' ref={this.setSpoilerText} />
            </label>
          </div>
  
          <div className='compose-form__autosuggest-wrapper'>
            <AutosuggestTextarea
              ref={this.setAutosuggestTextarea}
              placeholder={intl.formatMessage(messages.placeholder)}
              disabled={disabled}
              value={this.props.text}
              onChange={this.handleChange}
              suggestions={this.props.suggestions}
              onKeyDown={this.handleKeyDown}
              onSuggestionsFetchRequested={this.onSuggestionsFetchRequested}
              onSuggestionsClearRequested={this.onSuggestionsClearRequested}
              onSuggestionSelected={this.onSuggestionSelected}
              onPaste={onPaste}
              autoFocus={!showSearch && !isMobile(window.innerWidth)}
            />
  
            <EmojiPickerDropdown onPickEmoji={this.handleEmojiPick} />
          </div>
  
          <div className='compose-form__modifiers'>
            <UploadFormContainer />
          </div>
  
          <div className='compose-form__buttons-wrapper'>
            <div className='compose-form__buttons'>
              <UploadButtonContainer />
              <PrivacyDropdownContainer />
              <SensitiveButtonContainer />
              <SpoilerButtonContainer />
            </div>
            <div className='character-counter__wrapper'><CharacterCounter max={500} text={text} /></div>
          </div>
  
          <div className='compose-form__publish'>
            <div className='compose-form__publish-button-wrapper'><Button text={publishText} onClick={this.handleSubmit} disabled={disabledButton} block /></div>
          </div>
          <div className='compose-form__publish-button-wrapper'>
            {(() => {
              return this.props.text.replace(/@[^ ]*\s{1}/g, '').length > 0 ? <Button text='んほぉぉ！イッぐぅぅ！！を補完' onClick={this.handleNhooPick} block /> : <Button text='んほぉぉ！イッぐぅぅ！！' onClick={this.handleNhooSubmit} block />;
            })()}
          </div>
        </div>
      );
    }
  
  }
  