var React = require('react/addons');
var Router = require('react-router');
var Radial = require('./Radial.react.js');
var SetupStore = require('./SetupStore');
var RetinaImage = require('react-retina-image');
var Header = require('./Header.react');
var Util = require('./Util');
var metrics = require('./Metrics');
var machine = require('./DockerMachine');

var Setup = React.createClass({
  mixins: [ Router.Navigation ],
  getInitialState: function () {
    return {
      progress: 0,
      name: '',
      retrying: false
    };
  },
  componentWillMount: function () {
    SetupStore.on(SetupStore.PROGRESS_EVENT, this.update);
    SetupStore.on(SetupStore.STEP_EVENT, this.update);
    SetupStore.on(SetupStore.ERROR_EVENT, this.update);
  },
  componentDidMount: function () {
    this.update();
  },
  componentDidUnmount: function () {
    SetupStore.removeListener(SetupStore.PROGRESS_EVENT, this.update);
    SetupStore.removeListener(SetupStore.STEP_EVENT, this.update);
    SetupStore.removeListener(SetupStore.ERROR_EVENT, this.update);
  },
  handleCancelRetry: function () {
    metrics.track('Setup Retried', {
      from: 'cancel'
    });
    SetupStore.retry();
  },
  handleErrorRetry: function () {
    this.setState({
      retrying: true
    });
    metrics.track('Setup Retried', {
      from: 'error'
    });
    machine.stop().finally(() => {
      this.setState({
        retrying: false
      });
      SetupStore.retry();
    });
  },
  handleOpenWebsite: function () {
    Util.exec(['open', 'https://www.virtualbox.org/wiki/Downloads']);
  },
  update: function () {
    this.setState({
      progress: SetupStore.percent(),
      step: SetupStore.step(),
      error: SetupStore.error(),
      cancelled: SetupStore.cancelled()
    });
  },
  renderContents: function () {
    var img = 'virtualbox.png';
    if (SetupStore.step().name === 'init' || SetupStore.step().name === 'start') {
      img = 'boot2docker.png';
    }
    return (
      <div className="contents">
        <RetinaImage src={img} checkIfRetinaImgExists={false}/>
        <div className="detail">
          <Radial progress={this.state.progress} thick={true} gray={true}/>
        </div>
      </div>
    );
  },
  renderStep: function () {
    return (
      <div className="setup">
        <Header />
        <div className="image">
          {this.renderContents()}
        </div>
        <div className="desc">
          <div className="content">
            <h4>Step {SetupStore.number()} out of {SetupStore.stepCount()}</h4>
            <h1>{SetupStore.step().title}</h1>
            <p>{SetupStore.step().message}</p>
          </div>
        </div>
      </div>
    );
  },
  renderCancelled: function () {
    return (
      <div className="setup">
        <Header />
        <div className="image">
          {this.renderContents()}
        </div>
        <div className="desc">
          <div className="content">
            <h4>Setup Cancelled</h4>
            <h1>Couldn&#39;t Install Requirements</h1>
            <p>Kitematic didn&#39;t receive the administrative privileges required to install or upgrade VirtualBox &amp; Docker.</p>
            <p>Please click retry. If VirtualBox is not installed, you can download &amp; install it manually from the <a onClick={this.handleOpenWebsite}>official Oracle website</a>.</p>
            <p><button className="btn btn-action" onClick={this.handleCancelRetry}>Retry</button></p>
          </div>
        </div>
      </div>
    );
  },
  renderError: function () {
    return (
      <div className="setup">
        <Header />
        <div className="image">
          <div className="contents">
            <RetinaImage src="install-error.png" checkIfRetinaImgExists={false}/>
            <div className="detail">
            </div>
          </div>
        </div>
        <div className="desc">
          <div className="content">
            <h4>Setup Error</h4>
            <h1>We&#39;re Sorry!</h1>
            <p>There seems to have been an unexpected error with Kitematic:</p>
            <p className="error">{this.state.error.message || this.state.error}</p>
            <p><button className="btn btn-action" disabled={this.state.retrying} onClick={this.handleErrorRetry}>Retry Setup</button></p>
          </div>
        </div>
      </div>
    );
  },
  render: function () {
    if (this.state.cancelled) {
      return this.renderCancelled();
    } else if (this.state.error) {
      return this.renderError();
    } else if (SetupStore.step()) {
      return this.renderStep();
    } else {
      return false;
    }
  }
});

module.exports = Setup;