import React, { PropTypes } from 'react';
import compose from 'recompose/compose';
import defaultProps from 'recompose/defaultProps';
import withStateSelector from './utils/withStateSelector';
import withHandlers from 'recompose/withHandlers';
import withState from 'recompose/withState';
import withContext from 'recompose/withContext';
import withProps from 'recompose/withProps';
import withPropsOnChange from 'recompose/withPropsOnChange';
import ptInBounds from './utils/ptInBounds';
import GoogleMapReact from '../src';
import SimpleMarker from './markers/SimpleMarker';
import { createSelector } from 'reselect';
import { londonCoords, generateMarkers } from './data/fakeData';

export const gMap = ({
  style, hoverDistance, options,
  mapParams: { center, zoom },
  onChange, onChildMouseEnter, onChildMouseLeave,
  markers, draggable, // hoveredMarkerId,
}) => (
  <GoogleMapReact
    draggable={draggable}
    style={style}
    options={options}
    hoverDistance={hoverDistance}
    center={center}
    zoom={zoom}
    layerTypes={zoom > 12 ? [] : zoom > 10 ? ['TrafficLayer'] : ['TrafficLayer', 'TransitLayer']}
    onChange={onChange}
    onChildMouseEnter={onChildMouseEnter}
    onChildMouseLeave={onChildMouseLeave}
  >
    {
      markers
    }
  </GoogleMapReact>
);

export const gMapHOC = compose(
  defaultProps({
    clusterRadius: 60,
    hoverDistance: 30,
    options: {
      minZoom: 3,
      maxZoom: 15,
    },
    style: {
      position: 'relative',
      margin: 0,
      padding: 0,
      flex: 1,
    },
  }),
  withContext(
    { hello: PropTypes.string },
    () => ({ hello: 'world' })
  ),
  // withState so you could change markers if you want
  withStateSelector(
    'markers',
    'setMarkers',
    () => createSelector(
      ({ route: { markersCount = 20 } }) => markersCount,
      (markersCount) => generateMarkers(markersCount)
    )
  ),
  withState('hoveredMarkerId', 'setHoveredMarkerId', -1),
  withState('mapParams', 'setMapParams', { center: londonCoords, zoom: 9 }),
  // describe events
  withHandlers({
    onChange: ({ setMapParams }) => ({ center, zoom, bounds }) => {
      setMapParams({ center, zoom, bounds });
    },
    onChildMouseEnter: ({ setHoveredMarkerId }) => (hoverKey, { id }) => {
      setHoveredMarkerId(id);
    },
    onChildMouseLeave: ({ setHoveredMarkerId }) => () => {
      setHoveredMarkerId(-1);
    },
  }),
  withPropsOnChange(
    ['markers', 'mapParams'],
    ({ markers, mapParams: { bounds } }) => ({
      markers: bounds
        ? markers.filter(m => ptInBounds(bounds, m))
        : [],
    })
  ),
  withProps(({ hoveredMarkerId }) => ({
    draggable: hoveredMarkerId === -1,
  })),
  withPropsOnChange(
    ['markers'],
    ({ markers }) => ({
      markers: markers
        .map(({ ...markerProps, id }) => (
          <SimpleMarker
            key={id}
            id={id}
            {...markerProps}
          />
        )),
    })
  )
);

export default gMapHOC(gMap);