/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2016-2017 Dan 'Ducky' Little
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the 'Software'), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/** The big bopper of all the GeoMoose React.Components, the Catalog.
 *
 *  This is the most exercised component of GeoMoose and serves
 *  as the 'dispatch' center to the map, presenting the layers
 *  of the mapbook in a nice tree format.
 */

import React from "react";
import { Translation } from "react-i18next";

import { connect, Provider } from "react-redux";

import { setGroupExpand } from "../../actions/catalog";

import CatalogGroup from "./group";
import CatalogLayer from "./layer";

function allLayers() {
  return true;
}

export function renderTree(dispatch, tree, id, resolution, filter = allLayers) {
  const node = tree[id];

  if (node.children) {
    return (
      <CatalogGroup
        key={id}
        group={node}
        onExpand={() => {
          dispatch(setGroupExpand(id, node.expand !== true));
        }}
      >
        {node.children.map((childId) => renderTree(dispatch, tree, childId, resolution, filter))}
      </CatalogGroup>
    );
  } else {
    if (filter(node)) {
      return <CatalogLayer key={id} layer={node} resolution={resolution} />;
    } else {
      return false;
    }
  }
}

export function renderFlatTree(dispatch, tree, id, resolution, filter = allLayers) {
  const node = tree[id];

  let elements = [];

  if (node.children) {
    for (let i = 0, ii = node.children.length; i < ii; i++) {
      const sublayers = renderFlatTree(dispatch, tree, node.children[i], resolution, filter);
      if (sublayers.length > 0) {
        elements = elements.concat(sublayers);
      }
    }
  } else {
    if (filter(node)) {
      elements.push(<CatalogLayer key={id} layer={node} resolution={resolution} />);
    }
  }

  return elements;
}

export class Catalog extends React.Component {
  constructor(props) {
    super(props);

    this.state = {
      searchFilter: "",
    };
  }

  render() {
    const catalogClasses = this.props.showSearch ? "catalog searchable" : "catalog";

    const filter = (layer) => {
      if (this.state.searchFilter !== "") {
        // searchFilter is always lower case!
        // If the search filter is in the title then return true.
        return layer.label.toLowerCase().indexOf(this.state.searchFilter) >= 0;
      }
      return true;
    };

    return (
      <Provider store={this.props.store}>
        <div className={catalogClasses}>
          {this.props.showSearch && (
            <div className="searchbox">
              <Translation>
                {(t) => (
                  <input
                    onChange={(evt) => {
                      this.setState({
                        searchFilter: evt.target.value.toLowerCase(),
                      });
                    }}
                    placeholder={t("search-catalog")}
                  />
                )}
              </Translation>
            </div>
          )}
          {this.state.searchFilter === ""
            ? this.props.catalog.root.children.map((childId) =>
                renderTree(this.props.dispatch, this.props.catalog, childId, this.props.resolution)
              )
            : this.props.catalog.root.children.map((childId) =>
                renderFlatTree(
                  this.props.dispatch,
                  this.props.catalog,
                  childId,
                  this.props.resolution,
                  filter
                )
              )}
        </div>
      </Provider>
    );
  }
}

Catalog.defaultProps = {
  showSearch: true,
};

const mapCatalogToProps = (state) => ({
  mapSources: state.mapSources,
  catalog: state.catalog,
  resolution: state.map ? state.map.resolution : -1,
});

export default connect(mapCatalogToProps)(Catalog);
