node-red-contrib-snap4city-user/event-search-along-path.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('event-search-along-path', {
        category: 'S4CSearch',
        color: '#FDD0A2',
        defaults: {
            name: {
                value: ""
            },
            authentication: {
                type: "snap4city-authentication",
                required: false
            },
            path: {
                value: "",
                required: false
            },
            range: {
                value: "",
                required: false
            },
            maxresults: {
                value: 100,
                required: false,
                validate: RED.validators.number()
            }
        },
        outputs: 2,
        inputs: 1,
        outputLabels: ["service uri array", "geojson result"],
        icon: "white-globe.png",
        label: function () {
            return this.name || "event-search-along-path";
        },
        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',
                    polygon: false,
                    rectangle: 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-path").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-path").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-path").val("");
            });

        },
        oneditresize: function () {
            if (window.node_input_map) {
                window.node_input_map.invalidateSize(true);
            }
        }
    });
</script>

<script type="text/x-red" data-template-name="event-search-along-path">
    <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-range">Range</label>
        <select id="node-input-range">
            <option value="day">Day</option>
            <option value="week">Week</option>
            <option value="month">Month</option>
        </select>
    </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-path">Path</label>
        <input type="text" autocomplete="off" id="node-input-path" placeholder="Path" 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="event-search-along-path">
    <p>It allows to retrieve the geolocated events in a given temporal range (day, week or month).</p>

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

    <dl class="message-properties">
        <dt>path
            <span class="property-type">string</span>
        </dt>
        <dd> "&lt;WKT_string>” a described as Well Known Text</dd>
        <dt>range
            <span class="property-type">string</span>
        </dt>
        <dd> time range for the events to be retrieved, it can be ‘day’ for the events of the day of the request, ‘week’ for the
            events in the next 7 days or ‘month’ for the events in the next 30 days (if omitted ‘day’ is assumed).
            <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>
    <ol class="node-ports">
        <li>ServiceUri Array
            <dl class="message-properties">
                <dd> Returns an array containing the servicesUri of each service found</dd>
            </dl>
        </li>
        <li>GeoJSON Results
            <dl class="message-properties">
                <dd> the results format is a GeoJSON “FeatureCollection” with the matching events. For each “Feature” a set of
                    properties is provided.d</dd>
            </dl>
        </li>
    </ol>


    <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>