{% extends "base.html" %}
{% import 'bootstrap/wtf.html' as wtf %}

{% block head %}
{{ super() }}
<link rel="stylesheet" href="{{ url_for('static', filename='assets/css/leaflet.css') }}" />
<script src="{{ url_for('static', filename='assets/js/leaflet.js') }}"></script>
{% endblock %}

{% block app_content %}
<h1>Add Objective</h1>
<hr>
<div class="row">
    <div class="col-md-4 col-sm-6 col-xs-8">
        <form action="" method="post" class="form" role="form">
            {{ form.hidden_tag() }}
            {{ wtf.form_field(form.objective_name, class='form-control') }}
            {{ wtf.form_field(form.latitude, type='number', value='52.2', min='-90', max='90', step='0.00001') }}
            {{ wtf.form_field(form.longitude, class='form-control', type='number', value='5.3', min='-180', max='181', step='0.00001') }}
            {{ wtf.form_field(form.submit, class='btn btn-primary') }}
        </form>
    </div>
    <div id="map" style=" height: 500px; border-radius: 10px; " class="col-md-6 col-xs-12"></div>
</div>
<hr>


{% endblock %}

{% block scripts %}
{{ super() }}
<script type="text/javascript", crossorigin="anonymous">
    // Leaflet Map
    var map = L.map( 'map', {
        center: [52.2, 5.3],
        minZoom: 6,
        maxZoom: 19,
        bounds: [[50.5, 3.25], [54, 7.6]],
        zoom: 8
    });
    L.control.scale().addTo(map);

    L.tileLayer( 'https://geodata.nationaalgeoregister.nl/tiles/service/wmts/brtachtergrondkaartpastel/EPSG:3857/{z}/{x}/{y}.png', {
        attribution: 'Kaartgegevens &copy; <a href="kadaster.nl">Kadaster</a>'
    }).addTo( map );

    var objectiveMarker = L.marker([
        $("#latitude")[0].value,
        $("#longitude")[0].value
        ], {
        draggable: true
    }).addTo(map);

    var round = function(value){
        return (Math.round(value * 100000) / 100000).toFixed(5);
    };

    objectiveMarker.on('dragend', function(e){
        var newPosition = e.target.getLatLng();
        $("#latitude")[0].value = round(newPosition.lat);
        $("#longitude")[0].value = round(newPosition.lng);
    })

    $("#latitude").change(function(e) {
        var newLatLng = new L.LatLng(e.target.value, objectiveMarker._latlng.lng);
        objectiveMarker.setLatLng(newLatLng);
    });

    $("#longitude").change(function(e) {
        var newLatLng = new L.LatLng(objectiveMarker._latlng.lat, e.target.value);
        objectiveMarker.setLatLng(newLatLng);
    });

</script>
{% endblock %}