todos-contra-el-fuego-web/imports/ui/components/Maps/DefMapLayers.js

/* eslint-disable react/jsx-indent-props */
/* eslint-disable import/no-absolute-path */
/* eslint-disable import/no-absolute-path */

import React, { Component } from 'react';
import PropTypes from 'prop-types';
import { withTranslation } from 'react-i18next';
import GoogleMutantLayer from '/imports/ui/components/Maps/GoogleMutantLayer';
import Gkeys from '/imports/startup/client/Gkeys';
import { TileLayer, LayersControl } from 'react-leaflet';

const { BaseLayer } = LayersControl;

const defOpacity = 0.7;

// Cuánto se espera a que Google conteste antes de montar el control solo con
// OpenStreetMap. Si el script de Google no llega (sin red hacia Google, una
// extensión que lo bloquea, un despliegue sin clave), el mapa tiene que salir
// igual: las capas de Google son un extra.
const GMAPS_WAIT_MS = 5000;

class DefMapLayers extends Component {
  constructor(props) {
    super(props);
    this.state = {
      gkey: null,
      // El control de capas se monta UNA vez, con la lista de capas ya cerrada.
      // Añadirle capas después —que es lo que pasaba al resolverse la clave de
      // Google— hacía que react-leaflet se dejara por el camino la capa base
      // marcada, y el mapa se quedaba en gris: sin teselas, sin fuegos y con el
      // "Actualizando…" eterno. Solo se veía en despliegues CON clave de Google
      // (staging y producción), nunca en desarrollo, que no la tiene.
      ready: false
    };
  }

  componentDidMount() {
    this.mounted = true;
    const settle = (key) => {
      if (!this.mounted || this.state.ready) return;
      this.setState({ gkey: key || null, ready: true });
    };
    Gkeys.load((err, key) => settle(key));
    this.waitTimer = setTimeout(() => settle(null), GMAPS_WAIT_MS);
  }

  componentWillUnmount() {
    this.mounted = false;
    clearTimeout(this.waitTimer);
  }

  render() {
    const { t } = this.props;
    if (!this.state.ready) return null;
    const osmgraylayer = (
      <BaseLayer checked={this.props.gray} name={t('Mapa gris de OpenStreetMap')}>
        <TileLayer
            opacity={defOpacity}
            attribution="&copy; <a href=&quot;http://osm.org/copyright&quot;>OpenStreetMap</a> contributors"
            // url="https://tiles.wmflabs.org/bw-mapnik/{z}/{x}/{y}.png"
            url="https://cartodb-basemaps-{s}.global.ssl.fastly.net/light_all/{z}/{x}/{y}.png"
        />
      </BaseLayer>);
    const osmlayer = (
      <BaseLayer checked={this.props.osmcolor} name={t('Mapa color de OpenStreetMap')}>
        <TileLayer
            opacity={defOpacity}
            attribution="&amp;copy <a href=&quot;http://osm.org/copyright&quot;>OpenStreetMap</a> contributors"
            url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
        />
      </BaseLayer>);
    return (
      <LayersControl position="topleft">
        {osmlayer}
        {osmgraylayer}
        {/* React.Fragment does not work here */}
        { this.state.gkey &&
        <BaseLayer name={t('Mapa de carreteras de Google')}>
          <GoogleMutantLayer opacity={defOpacity} maptype="ROADMAP" />
        </BaseLayer> }
        { this.state.gkey &&
          <BaseLayer name={t('Mapa de terreno de Google')} checked={this.props.terrain}>
            <GoogleMutantLayer opacity={defOpacity} maptype="TERRAIN" />
          </BaseLayer> }
        { this.state.gkey &&
          <BaseLayer name={t('Mapa de satélite de Google')} checked={this.props.satellite}>
            <GoogleMutantLayer opacity={defOpacity} maptype="SATELLITE" />
          </BaseLayer> }
      </LayersControl>
    );
  }
}

DefMapLayers.propTypes = {
  t: PropTypes.func.isRequired,
  gray: PropTypes.bool,
  osmcolor: PropTypes.bool,
  terrain: PropTypes.bool,
  satellite: PropTypes.bool

};

DefMapLayers.defaultProps = {
  gray: false,
  osmcolor: false,
  terrain: false,
  satellite: false
};

export default withTranslation()(DefMapLayers);