/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
import React from 'react';
import PropTypes from 'prop-types';
import { Panel } from 'react-bootstrap';

import Label from 'src/components/Label';
import TextControl from './TextControl';
import MetricsControl from './MetricsControl';
import ControlHeader from '../ControlHeader';
import PopoverSection from '../../../components/PopoverSection';

const controlTypes = {
  fixed: 'fix',
  metric: 'metric',
};

const propTypes = {
  onChange: PropTypes.func,
  value: PropTypes.object,
  isFloat: PropTypes.bool,
  datasource: PropTypes.object.isRequired,
  default: PropTypes.shape({
    type: PropTypes.oneOf(['fix', 'metric']),
    value: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
  }),
};

const defaultProps = {
  onChange: () => {},
  default: { type: controlTypes.fixed, value: 5 },
};

export default class FixedOrMetricControl extends React.Component {
  constructor(props) {
    super(props);
    this.onChange = this.onChange.bind(this);
    this.setType = this.setType.bind(this);
    this.setFixedValue = this.setFixedValue.bind(this);
    this.setMetric = this.setMetric.bind(this);
    this.toggle = this.toggle.bind(this);
    const type =
      (props.value ? props.value.type : props.default.type) ||
      controlTypes.fixed;
    const value =
      (props.value ? props.value.value : props.default.value) || '100';
    this.state = {
      type,
      fixedValue: type === controlTypes.fixed ? value : '',
      metricValue: type === controlTypes.metric ? value : null,
    };
  }

  onChange() {
    this.props.onChange({
      type: this.state.type,
      value:
        this.state.type === controlTypes.fixed
          ? this.state.fixedValue
          : this.state.metricValue,
    });
  }

  setType(type) {
    this.setState({ type }, this.onChange);
  }

  setFixedValue(fixedValue) {
    this.setState({ fixedValue }, this.onChange);
  }

  setMetric(metricValue) {
    this.setState({ metricValue }, this.onChange);
  }

  toggle() {
    this.setState(prevState => ({
      expanded: !prevState.expanded,
    }));
  }

  render() {
    const value = this.props.value || this.props.default;
    const type = value.type || controlTypes.fixed;
    const columns = this.props.datasource
      ? this.props.datasource.columns
      : null;
    const metrics = this.props.datasource
      ? this.props.datasource.metrics
      : null;
    return (
      <div>
        <ControlHeader {...this.props} />
        <Label onClick={this.toggle}>
          {this.state.type === controlTypes.fixed && (
            <span>{this.state.fixedValue}</span>
          )}
          {this.state.type === controlTypes.metric && (
            <span>
              <span style={{ fontWeight: 'normal' }}>metric: </span>
              <strong>
                {this.state.metricValue ? this.state.metricValue.label : null}
              </strong>
            </span>
          )}
        </Label>
        <Panel
          className="panel-spreaded"
          collapsible
          expanded={this.state.expanded}
          onToggle={this.toggle}
        >
          <Panel.Collapse>
            <Panel.Body>
              <div className="well">
                <PopoverSection
                  title="Fixed"
                  isSelected={type === controlTypes.fixed}
                  onSelect={() => {
                    this.setType(controlTypes.fixed);
                  }}
                >
                  <TextControl
                    isFloat
                    onChange={this.setFixedValue}
                    onFocus={() => {
                      this.setType(controlTypes.fixed);
                    }}
                    value={this.state.fixedValue}
                  />
                </PopoverSection>
                <PopoverSection
                  title="Based on a metric"
                  isSelected={type === controlTypes.metric}
                  onSelect={() => {
                    this.setType(controlTypes.metric);
                  }}
                >
                  <MetricsControl
                    name="metric"
                    columns={columns}
                    savedMetrics={metrics}
                    multi={false}
                    onFocus={() => {
                      this.setType(controlTypes.metric);
                    }}
                    onChange={this.setMetric}
                    value={this.state.metricValue}
                  />
                </PopoverSection>
              </div>
            </Panel.Body>
          </Panel.Collapse>
        </Panel>
      </div>
    );
  }
}

FixedOrMetricControl.propTypes = propTypes;
FixedOrMetricControl.defaultProps = defaultProps;