import debug from 'debug';
import React from 'react';
import classNames from 'classnames';
import PropTypes from 'prop-types';
import { connect } from 'react-redux';
import { Map as makeMap } from 'immutable';
import { noop } from 'lodash';

import { clickCloseDetails, clickShowTopologyForNode } from '../actions/app-actions';
import { brightenColor, getNeutralColor, getNodeColorDark } from '../utils/color-utils';
import { isGenericTable, isPropertyList } from '../utils/node-details-utils';
import { resetDocumentTitle, setDocumentTitle } from '../utils/title-utils';

import Overlay from './overlay';
import MatchedText from './matched-text';
import NodeDetailsControls from './node-details/node-details-controls';
import NodeDetailsGenericTable from './node-details/node-details-generic-table';
import NodeDetailsPropertyList from './node-details/node-details-property-list';
import NodeDetailsHealth from './node-details/node-details-health';
import NodeDetailsInfo from './node-details/node-details-info';
import NodeDetailsRelatives from './node-details/node-details-relatives';
import NodeDetailsTable from './node-details/node-details-table';
import Warning from './warning';


const log = debug('scope:node-details');

function getTruncationText(count) {
  return 'This section was too long to be handled efficiently and has been truncated'
  + ` (${count} extra entries not included). We are working to remove this limitation.`;
}

class NodeDetails extends React.Component {
  handleClickClose = (ev) => {
    ev.preventDefault();
    this.props.clickCloseDetails(this.props.nodeId);
  }

  handleShowTopologyForNode = (ev) => {
    ev.preventDefault();
    this.props.clickShowTopologyForNode(this.props.topologyId, this.props.nodeId);
  }

  componentDidMount() {
    this.updateTitle();
  }

  componentWillUnmount() {
    resetDocumentTitle();
  }

  renderTools() {
    const showSwitchTopology = this.props.nodeId !== this.props.selectedNodeId;
    const topologyTitle = `View ${this.props.label} in ${this.props.topologyId}`;

    return (
      <div className="node-details-tools-wrapper">
        <div className="node-details-tools">
          {showSwitchTopology &&
            <i
              title={topologyTitle}
              className="fa fa-long-arrow-alt-left"
              onClick={this.handleShowTopologyForNode}>
              <span>Show in <span>{this.props.topologyId.replace(/-/g, ' ')}</span></span>
            </i>
          }
          <i
            title="Close details"
            className="fa fa-times close-details"
            onClick={this.handleClickClose}
          />
        </div>
      </div>
    );
  }

  renderLoading() {
    const node = this.props.nodes.get(this.props.nodeId);
    const label = node ? node.get('label') : this.props.label;
    // NOTE: If we start the fa-spin animation before the node details panel has been
    // mounted, the spinner is displayed blurred the whole time in Chrome (possibly
    // caused by a bug having to do with animating the details panel).
    const spinnerClassName = classNames('fa fa-circle-notch', { 'fa-spin': this.props.mounted });
    const nodeColor = (node ?
      getNodeColorDark(node.get('rank'), label, node.get('pseudo')) :
      getNeutralColor());
    const tools = this.renderTools();
    const styles = {
      header: {
        backgroundColor: nodeColor
      }
    };

    return (
      <div className="node-details">
        {tools}
        <div className="node-details-header" style={styles.header}>
          <div className="node-details-header-wrapper">
            <h2 className="node-details-header-label truncate">
              {label}
            </h2>
            <div className="node-details-relatives truncate">
              Loading...
            </div>
          </div>
        </div>
        <div className="node-details-content">
          <div className="node-details-content-loading">
            <span className={spinnerClassName} />
          </div>
        </div>
      </div>
    );
  }

  renderNotAvailable() {
    const tools = this.renderTools();
    return (
      <div className="node-details">
        {tools}
        <div className="node-details-header node-details-header-notavailable">
          <div className="node-details-header-wrapper">
            <h2 className="node-details-header-label">
              {this.props.label}
            </h2>
            <div className="node-details-relatives truncate">
              n/a
            </div>
          </div>
        </div>
        <div className="node-details-content">
          <p className="node-details-content-info">
            <strong>{this.props.label}</strong> not found!
          </p>
        </div>
        <Overlay faded={this.props.transitioning} />
      </div>
    );
  }

  render() {
    if (this.props.notFound) {
      return this.renderNotAvailable();
    }

    if (this.props.details) {
      return this.renderDetails();
    }

    return this.renderLoading();
  }

  renderDetails() {
    const {
      details, nodeControlStatus, nodeMatches = makeMap(), topologyId
    } = this.props;
    const showControls = details.controls && details.controls.length > 0;
    const nodeColor = getNodeColorDark(details.rank, details.label, details.pseudo);
    const {error, pending} = nodeControlStatus ? nodeControlStatus.toJS() : {};
    const tools = this.renderTools();
    const styles = {
      controls: {
        backgroundColor: brightenColor(nodeColor)
      },
      header: {
        backgroundColor: nodeColor
      }
    };

    return (
      <div className="tour-step-anchor node-details">
        {tools}
        <div className="node-details-header" style={styles.header}>
          <div className="node-details-header-wrapper">
            <h2 className="node-details-header-label truncate" title={details.label}>
              <MatchedText text={details.label} match={nodeMatches.get('label')} />
            </h2>
            <div className="node-details-header-relatives">
              {details.parents && <NodeDetailsRelatives
                matches={nodeMatches.get('parents')}
                relatives={details.parents} />}
            </div>
          </div>
        </div>

        {showControls &&
          <div className="tour-step-anchor node-details-controls-wrapper" style={styles.controls}>
            <NodeDetailsControls
              nodeId={this.props.nodeId}
              controls={details.controls}
              pending={pending}
              error={error} />
          </div>
        }

        <div className="node-details-content">
          {details.metrics &&
            <div className="node-details-content-section">
              <div className="node-details-content-section-header">Status</div>
              <NodeDetailsHealth
                metrics={details.metrics}
                topologyId={topologyId}
                />
            </div>
          }
          {details.metadata &&
            <div className="node-details-content-section">
              <div className="node-details-content-section-header">Info</div>
              <NodeDetailsInfo rows={details.metadata} matches={nodeMatches.get('metadata')} />
            </div>
          }

          {details.connections && details.connections.filter(cs => cs.connections.length > 0)
            .map(connections => (
              <div className="node-details-content-section" key={connections.id}>
                <NodeDetailsTable
                  {...connections}
                  nodes={connections.connections}
                  nodeIdKey="nodeId"
                />
              </div>
          ))}

          {details.children && details.children.map(children => (
            <div className="node-details-content-section" key={children.topologyId}>
              <NodeDetailsTable {...children} />
            </div>
          ))}

          {details.tables && details.tables.length > 0 && details.tables.map((table) => {
            if (table.rows.length > 0) {
              return (
                <div className="node-details-content-section" key={table.id}>
                  <div className="node-details-content-section-header">
                    {table.label && table.label.length > 0 && table.label}
                    {table.truncationCount > 0 &&
                      <span
                        className="node-details-content-section-header-warning">
                        <Warning text={getTruncationText(table.truncationCount)} />
                      </span>
                    }
                  </div>
                  {this.renderTable(table)}
                </div>
              );
            }
            return null;
          })}

          {this.props.renderNodeDetailsExtras({ details, topologyId })}
        </div>

        <Overlay faded={this.props.transitioning} />
      </div>
    );
  }

  renderTable(table) {
    const { nodeMatches = makeMap() } = this.props;

    if (isGenericTable(table)) {
      return (
        <NodeDetailsGenericTable
          rows={table.rows}
          columns={table.columns}
          matches={nodeMatches.get('tables')}
        />
      );
    } else if (isPropertyList(table)) {
      return (
        <NodeDetailsPropertyList
          rows={table.rows}
          controls={table.controls}
          matches={nodeMatches.get('property-lists')}
        />
      );
    }

    log(`Undefined type '${table.type}' for table ${table.id}`);
    return null;
  }

  componentDidUpdate() {
    this.updateTitle();
  }

  updateTitle() {
    setDocumentTitle(this.props.details && this.props.details.label);
  }
}

NodeDetails.propTypes = {
  renderNodeDetailsExtras: PropTypes.func,
};

NodeDetails.defaultProps = {
  renderNodeDetailsExtras: noop,
};

function mapStateToProps(state, ownProps) {
  const currentTopologyId = state.get('currentTopologyId');
  return {
    nodeMatches: state.getIn(['searchNodeMatches', currentTopologyId, ownProps.id]),
    nodes: state.get('nodes'),
    selectedNodeId: state.get('selectedNodeId'),
    transitioning: state.get('pausedAt') !== ownProps.timestamp,
  };
}

export default connect(
  mapStateToProps,
  { clickCloseDetails, clickShowTopologyForNode }
)(NodeDetails);