node-red-contrib-snap4city-user/bus-routes-search-within-polygon.html

Nodes for Snap4city project, targeted to standard user (no developer)

<!--/* NODE-RED-CONTRIB-SNAP4CITY-USER
   Copyright (C) 2018 DISIT Lab http://www.disit.org - University of Florence

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU Affero General Public License as
   published by the Free Software Foundation, either version 3 of the
   License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Affero General Public License for more details.

   You should have received a copy of the GNU Affero General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>. */-->
<script type="text/javascript">
    RED.nodes.registerType('bus-routes-search-within-polygon', {
        category: 'S4CSearch',
        color: '#C7E9C0',
        defaults: {
            name: {
                value: ""
            },
            authentication: {
                type: "snap4city-authentication",
                required: false
            },
            polygon: {
                value: "",
                required: false
            },
            agency: {
                value: "",
                required: false
            },
            maxresults: {
                value: 100,
                required: false,
                validate: RED.validators.number()
            }
        },
        outputs: 1,
        inputs: 1,
        outputLabels: ["routes"],
        icon: "tpl.png",
        label: function () {
            return this.name || "bus-routes-search-within-polygon";
        },
        oneditprepare: function () {
            $.ajax({
                url: "s4c/js/leaflet.js",
                async: false,
                dataType: "script"
            });
            $.ajax({
                url: "s4c/js/leaflet.draw.js",
                async: false,
                dataType: "script"
            });
            node = this;
            map = L.map('node-input-map').setView([43.78, 11.23], 9);
            L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
                attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
            }).addTo(map);
            window.node_input_map = map;

            var mapLayers = {};

            drawnItems = new L.FeatureGroup();
            map.addLayer(drawnItems);

            var editControl = new L.Control.Draw({
                draw: false,
                edit: {
                    featureGroup: drawnItems
                }
            });
            map.addControl(editControl);

            drawControl = new L.Control.Draw({
                draw: {
                    position: 'topleft',
                    polyline: false,
                    marker: false,
                    circlemarker: false,
                    circle: false
                }
            });
            map.addControl(drawControl);

            L.control.layers(mapLayers, {
                'drawlayer': drawnItems
            }, {
                collapsed: true
            }).addTo(map);

            map.on(L.Draw.Event.CREATED, function (e) {
                var fence = e.layer;
                fence.nodeID = node.id;
                if (drawnItems.hasLayer(fence) == false) {
                    drawnItems.addLayer(fence);
                }

                drawControl.remove();

                polygons = {};

                drawnItems.eachLayer(function (layer) {
                    polygons[layer.nodeID] = layer.toGeoJSON();
                });

                $("#node-input-polygon").val(polygons[node.id].geometry.type.toUpperCase() + JSON.stringify(
                    polygons[node.id].geometry.coordinates).replace(/\],\[/g, "&").replace(
                        /,/g, " ").replace(/\[\[\[/g, "((").replace(/\]\]\]/g, "))").replace(
                            /&/g, ","));
            });

            map.on('draw:edited', function (e) {
                var fences = e.layers;
                fences.eachLayer(function (fence) {
                    fence.shape = "geofence";
                    if (drawnItems.hasLayer(fence) == false) {
                        drawnItems.addLayer(fence);
                    }
                });

                polygons = {};

                drawnItems.eachLayer(function (layer) {
                    polygons[layer.nodeID] = layer.toGeoJSON();
                });

                $("#node-input-polygon").val(polygons[node.id].geometry.type.toUpperCase() + JSON.stringify(
                    polygons[node.id].geometry.coordinates).replace(/\],\[/g, "&").replace(
                        /,/g, " ").replace(/\[\[\[/g, "((").replace(/\]\]\]/g, "))").replace(
                            /&/g, ","));
            });

            map.on('draw:deleted', function (e) {
                drawControl.addTo(map);
                $("#node-input-polygon").val("");
            });

            $("#node-input-agency").empty();
            var domain = (RED.nodes.node($("#node-input-authentication").val()) != null ? RED.nodes.node($("#node-input-authentication").val()).domain: "");
            
            $.ajax({
                url: (domain ? domain : (RED.settings.ascapiUrl ? RED.settings.ascapiUrl : "https://www.snap4city.org/")) + "/superservicemap/api/v1/tpl/agencies/",
                type: "GET",
                async: false,
                dataType: "json",
                success: function (data) {
                    var agencies = data.Agencies;
                    for (var i = 0; i < agencies.length; i++) {
                        $("<option value=\"" + agencies[i].agency + "\">" + agencies[i].name +
                            "</option>").appendTo($("#node-input-agency"));
                    }
                    $("#node-input-agency").val("");
                },
                error: function (err) {
                    console.log(err);
                }
            });
        },
        oneditresize: function () {
            if (window.node_input_map) {
                window.node_input_map.invalidateSize(true);
            }
        }
    });
</script>

<script type="text/x-red" data-template-name="bus-routes-search-within-polygon">
    <div class="form-row" id="rowAuthentication">
        <label for="node-input-authentication">Authentication</label>
        <input type="text" id="node-input-authentication">
    </div>
    <div class="form-tips"  id="tipAuthentication" style="margin-bottom: 10px;">
        If you have private data and you want to access them, you must have to insert you account data. You can register for one account 
        <a href="https://www.snap4city.org"
            target="_blank">here</a>.
    </div>
    <div class="form-row">
        <label for="node-input-name">Name</label>
        <input type="text" autocomplete="off" id="node-input-name" placeholder="Name">
    </div>
    <div class="form-row">
        <label for="node-input-maxresults">Max Results</label>
        <select id="node-input-maxresults">
            <option value="100">100</option>
            <option value="200">200</option>
            <option value="500">500</option>
            <option value="1000">1000</option>
            <option value="2000">2000</option>
            <option value="0">All</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-agency">Agency</label>
        <select id="node-input-agency">
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-polygon">Polygon</label>
        <input type="text" autocomplete="off" id="node-input-polygon" placeholder="Polygon" disabled>
    </div>
    <div class="form-row">
        <link rel="stylesheet" href="s4c/css/leaflet.css" />
        <link rel="stylesheet" href="s4c/css/leaflet.draw.css" />
        <div id="node-input-map" style="width: 80%; height: 300px"></div>
    </div>
</script>

<script type="text/x-red" data-help-name="bus-routes-search-within-polygon">
    <p>It provides a list of the public transport routes that have a stop in a specified area.
    </p>

    <h3>Inputs</h3>
    A JSON with these parameters:

    <dl class="message-properties">
        <dt>Polygon
            <span class="property-type">string</span>
        </dt>
        <dd> “&lt;wktarea>” for a geographic area described as Well Known Text </dd>
        <dt>agency
            <span class="property-type">string</span>
        </dt>
        <dd> URI of an agency to restrict the search to a specified agency
        </dd>
        <dt>maxresults
            <span class="property-type">number</span>
        </dt>
        <dd> maximum number of results to be returned (if parameter is missing 100 is assumed), if it is 0 all results are returned</dd>
    </dl>

    <h3>Outputs</h3>
    <dl class="message-properties">
        <dd> It provides a JSON Object with all the routes that have stops on the specified area. For each route the following
            properties are provided: • lineNumber: the line short name • lineName: the line long name • route: the route
            name • routeUri: an URI identifying the route (it can be used to retrieve all the stops of the route) • direction:
            with first and last stop • agency: with agency name • agencyUri: with agency URI • polyline: with the WKT geometry
            of the route</dd>
    </dl>

    <h3>Details</h3>
    <p>The node can receive a JSON with the parameters described in the Inputs section and with them generate the output JSON.
        If the values are not present in the input JSON, these are read by those in the configuration. If they are not present
        in either part, an error is generated for the necessary parameters.</p>

</script>