import React, {PropTypes, Component} from 'react';
import {Dropdown, DropdownButton, DropdownItem, DropdownDivider} from '../base/dropdown';
import SizeTag from '../tags/SizeTag';
import StatusTag from '../tags/StatusTag';
import TimeTag from '../tags/TimeTag';
import * as models from '../../../models/index';
import PromptButton from '../base/PromptButton';

class ResponseHistoryDropdown extends Component {
  state = {
    responses: [],
  };

  _handleDeleteResponses = () => {
    this.props.handleDeleteResponses(this.props.requestId);
  };

  async _load (requestId) {
    const responses = await models.response.findRecentForRequest(requestId);

    // NOTE: this is bad practice, but I can't figure out a better way.
    // This component may not be mounted if the user switches to a request that
    // doesn't have a response
    if (!this._unmounted) {
      this.setState({responses});
    }
  }

  componentWillUnmount () {
    this._unmounted = true;
  }

  componentWillReceiveProps (nextProps) {
    this._load(nextProps.requestId);
  }

  componentDidMount () {
    this._unmounted = false;
    this._load(this.props.requestId);
  }

  renderDropdownItem = (response, i) => {
    const {activeResponseId, handleSetActiveResponse} = this.props;
    const active = response._id === activeResponseId;
    return (
      <DropdownItem key={response._id}
                    disabled={active}
                    value={i === 0 ? null : response._id}
                    onClick={handleSetActiveResponse}>
        {active ? <i className="fa fa-thumb-tack"/> : <i className="fa fa-empty"/>}
        {" "}
        <StatusTag statusCode={response.statusCode}
                   statusMessage={response.statusMessage || 'Error'}
                   small={true}/>
        <TimeTag milliseconds={response.elapsedTime} small={true}/>
        <SizeTag bytes={response.bytesRead} small={true}/>
      </DropdownItem>
    )
  };

  render () {
    const {
      activeResponseId,
      handleSetActiveResponse,
      handleDeleteResponses,
      isLatestResponseActive,
      ...extraProps
    } = this.props;
    const {responses} = this.state;

    return (
      <Dropdown {...extraProps}>
        <DropdownButton className="btn btn--super-compact tall">
          {isLatestResponseActive ?
            <i className="fa fa-history"/> :
            <i className="fa fa-thumb-tack"/>}
        </DropdownButton>
        <DropdownDivider name="Response History"/>
        <DropdownItem buttonClass={PromptButton}
                      addIcon={true}
                      onClick={this._handleDeleteResponses}>
          <i className="fa fa-trash-o"/>
          Clear History
        </DropdownItem>
        <DropdownDivider name="Past Responses"/>
        {responses.map(this.renderDropdownItem)}
      </Dropdown>
    )
  }
}

ResponseHistoryDropdown.propTypes = {
  handleSetActiveResponse: PropTypes.func.isRequired,
  handleDeleteResponses: PropTypes.func.isRequired,
  onChange: PropTypes.func.isRequired,
  requestId: PropTypes.string.isRequired,
  activeResponseId: PropTypes.string.isRequired,
  isLatestResponseActive: PropTypes.bool.isRequired,
};

export default ResponseHistoryDropdown;