import classnames from 'classnames';
import Dropzone from 'react-dropzone';
import React from 'react';

import AddTorrentsDestination from './AddTorrentsDestination';
import Close from '../icons/Close';
import File from '../icons/File';
import Files from '../icons/Files';
import ModalActions from './ModalActions';
import TorrentActions from '../../actions/TorrentActions';

const METHODS_TO_BIND = [
  'handleAddTorrents',
  'handleDestinationChange',
  'handleFileDrop'
];

export default class AddTorrents extends React.Component {
  constructor() {
    super();

    this.state = {
      isAddingTorrents: false,
      files: null
    };

    METHODS_TO_BIND.forEach((method) => {
      this[method] = this[method].bind(this);
    });
  }

  handleFileDrop(files) {
    this.setState({files});
  }

  handleFileRemove(file) {
    console.log(file);
  }

  handleFilesClick(event) {
    event.stopPropagation();
  }

  getActions() {
    let icon = null;
    let primaryButtonText = 'Add Torrent';

    if (this.state.isAddingTorrents) {
      icon = <LoadingIndicatorDots viewBox="0 0 32 32" />;
      primaryButtonText = 'Adding...';
    }

    return [
      {
        clickHandler: null,
        content: 'Cancel',
        triggerDismiss: true,
        type: 'secondary'
      },
      {
        clickHandler: this.handleAddTorrents,
        content: (
          <span>
            {icon}
            {primaryButtonText}
          </span>
        ),
        supplementalClassName: icon != null ? 'has-icon' : '',
        triggerDismiss: false,
        type: 'primary'
      }
    ];
  }

  getModalContent() {
    let dropzoneClasses = classnames('form__dropzone dropzone', {
      'is-fulfilled': this.state.files && this.state.files.length > 0
    });

    let content = (
      <Dropzone activeClassName="dropzone--is-dragging"
        className={dropzoneClasses} ref="dropzone"
        onDrop={this.handleFileDrop} disablePreview={true}>
        <div className="dropzone__copy">
          <div className="dropzone__icon">
            <Files />
          </div>
          Drop some files here, <span className="dropzone__browse-button">
          or click to browse</span>.
        </div>
      </Dropzone>
    );

    if (this.state.files && this.state.files.length > 0) {
      let files = this.state.files.map((file, index) => {
        return (
          <li className="dropzone__selected-files__file" key={index}>
            <File />
            {file.name}
            <Close onClick={this.handleFileRemove.bind(this, file)} />
          </li>
        );
      });

      content = (
        <ul className="dropzone__selected-files" onClick={this.handleFilesClick}>
          {files}
        </ul>
      );
    }

    return content;
  }

  handleAddTorrents() {
    if (!this.state.files || this.state.files.length === 0) {
      return;
    }

    let fileData = new FormData();

    this.state.files.forEach(function (file) {
      fileData.append('torrents', file);
    });

    TorrentActions.addTorrentsByFiles(fileData, this.state.destination);
  }

  handleDestinationChange(destination) {
    this.setState({destination});
  }

  render() {
    return (
      <div className="form">
        <div className="form__row">
          <label className="form__label">
            Torrents
          </label>
          {this.getModalContent()}
        </div>
        <AddTorrentsDestination onChange={this.handleDestinationChange} />
        <ModalActions actions={this.getActions()} dismiss={this.props.dismiss} />
      </div>
    );
  }
}