from branca.element import MacroElement
from jinja2 import Template

from folium import Map
from folium.elements import JSCSSMixin
from folium.features import FeatureGroup, GeoJson, TopoJson
from folium.plugins import MarkerCluster
from folium.utilities import parse_options


class Search(JSCSSMixin, MacroElement):
    """
    Adds a search tool to your map.

    Parameters
    ----------
    layer: GeoJson, TopoJson, FeatureGroup, MarkerCluster class object.
        The map layer to index in the Search view.
    search_label: str, optional
        'properties' key in layer to index Search, if layer is GeoJson/TopoJson.
    search_zoom: int, optional
        Zoom level to set the map to on match.
        By default zooms to Polygon/Line bounds and points
        on their natural extent.
    geom_type: str, default 'Point'
        Feature geometry type. "Point", "Line" or "Polygon"
    position: str, default 'topleft'
        Change the position of the search bar, can be:
        'topleft', 'topright', 'bottomright' or 'bottomleft',
    placeholder: str, default 'Search'
        Placeholder text inside the Search box if nothing is entered.
    collapsed: boolean, default False
        Whether the Search box should be collapsed or not.
    **kwargs.
        Assorted style options to change feature styling on match.
        Use the same way as vector layer arguments.

    See https://github.com/stefanocudini/leaflet-search for more information.

    """

    _template = Template(
        """
        {% macro script(this, kwargs) %}
            var {{this.layer.get_name()}}searchControl = new L.Control.Search({
                layer: {{this.layer.get_name()}},
                {% if this.search_label %}
                propertyName: '{{this.search_label}}',
                {% endif %}
                collapsed: {{this.collapsed|tojson|safe}},
                textPlaceholder: '{{this.placeholder}}',
                position:'{{this.position}}',
            {% if this.geom_type == 'Point' %}
                initial: false,
                {% if this.search_zoom %}
                zoom: {{this.search_zoom}},
                {% endif %}
                hideMarkerOnCollapse: true
            {% else %}
                marker: false,
                moveToLocation: function(latlng, title, map) {
                var zoom = {% if this.search_zoom %} {{ this.search_zoom }} {% else %} map.getBoundsZoom(latlng.layer.getBounds()) {% endif %}
                    map.flyTo(latlng, zoom); // access the zoom
                }
            {% endif %}
                });
                {{this.layer.get_name()}}searchControl.on('search:locationfound', function(e) {
                    {{this.layer.get_name()}}.setStyle(function(feature){
                        return feature.properties.style
                    })
                    {% if this.options %}
                    e.layer.setStyle({{ this.options|tojson }});
                    {% endif %}
                    if(e.layer._popup)
                        e.layer.openPopup();
                })
                {{this.layer.get_name()}}searchControl.on('search:collapsed', function(e) {
                        {{this.layer.get_name()}}.setStyle(function(feature){
                            return feature.properties.style
                    });
                });
            {{this._parent.get_name()}}.addControl( {{this.layer.get_name()}}searchControl );

        {% endmacro %}
        """  # noqa
    )

    default_js = [
        (
            "Leaflet.Search.js",
            "https://cdn.jsdelivr.net/npm/leaflet-search@2.9.7/dist/leaflet-search.min.js",
        )
    ]
    default_css = [
        (
            "Leaflet.Search.css",
            "https://cdn.jsdelivr.net/npm/leaflet-search@2.9.7/dist/leaflet-search.min.css",
        )
    ]

    def __init__(
        self,
        layer,
        search_label=None,
        search_zoom=None,
        geom_type="Point",
        position="topleft",
        placeholder="Search",
        collapsed=False,
        **kwargs
    ):
        super().__init__()
        assert isinstance(layer, (GeoJson, MarkerCluster, FeatureGroup, TopoJson)), (
            "Search can only index FeatureGroup, "
            "MarkerCluster, GeoJson, and TopoJson layers at "
            "this time."
        )
        self.layer = layer
        self.search_label = search_label
        self.search_zoom = search_zoom
        self.geom_type = geom_type
        self.position = position
        self.placeholder = placeholder
        self.collapsed = collapsed
        self.options = parse_options(**kwargs)

    def test_params(self, keys):
        if keys is not None and self.search_label is not None:
            assert self.search_label in keys, (
                "The label '{}' was not "
                "available in {}"
                "".format(self.search_label, keys)
            )
        assert isinstance(
            self._parent, Map
        ), "Search can only be added to folium Map objects."

    def render(self, **kwargs):
        if isinstance(self.layer, GeoJson):
            keys = tuple(self.layer.data["features"][0]["properties"].keys())
        elif isinstance(self.layer, TopoJson):
            obj_name = self.layer.object_path.split(".")[-1]
            keys = tuple(
                self.layer.data["objects"][obj_name]["geometries"][0][
                    "properties"
                ].keys()
            )  # noqa
        else:
            keys = None
        self.test_params(keys=keys)

        super().render(**kwargs)