{{/*

Syntax summary:

	{{< leaflet-map centerLat=FLOAT centerLon=FLOAT zoom=INT width="STRING" height="STRING" resizable=BOOL maximizable=BOOL freezable=BOOL freezeOptions="STRING" >}}

		{{< leaflet-layer id="STRING" apiKey="STRING" >}}

		{{< leaflet-marker lat=FLOAT lon=FLOAT >}}

		{{< leaflet-track path="URL" title="STRING" downloadable=BOOL >}}

		{{< leaflet-scale >}}

		{{< leaflet-elevation-profile expanded=BOOL resizable=BOOL width=INT height=INT minWidth=INT minHeight=INT maxWidth=INT maxHeight=INT >}}

	{{< /leaflet-map >}}

Map options:

	centerLat/centerLon:
		Center point coordinates of the map as decimal values. Optional iif tracks or markers are given.
	zoom:
		Zoom level of the map. Optional iif tracks or markers are given.
	width:
		Width of the map, including CSS units (e.g. "50%", "300px").
		Optional, defaults to "auto".
	height:
		Height of the map, including CSS units (e.g. "50%", "300px").
		Optional, defaults to "50vh".
	resizable:
		Boolean value indicating whether the map should be drag & drop resizable.
		Optional, defaults to true.
	maximizable:
		Boolean value indicating whether the maximize button should be displayed.
		Optional, defaults to true.
	freezable:
		Boolean value indicating whether the map should be frozen on page load to avoid scroll capture.
		Optional, defaults to true.
	freezeOptions:
		A string containing a JSON object (without its braces) that contains options for Leaflet.Freezy.
		See https://gitlab.com/mrubli/leaflet-freezy#options for details.
		Optional, defaults to: "freezeButtonInnerHtml: 1500"
		Example: freezeOptions="hoverToThawDuration: 500, freezeButtonInnerHtml: '🥶'"
		Example: freezeOptions=" "   (to avoid the hugo-mod-leaflet default and use Leaflet.Freezy's defaults instead)

Layer options:

	id:
		Name of the layer. Supported base layers:
		- org.openstreetmap.standard:
			https://www.openstreetmap.org/
		- com.thunderforest.cycle: ①
			https://www.thunderforest.com/maps/opencyclemap/
		- com.thunderforest.outdoors: ①
			https://www.thunderforest.com/maps/outdoors/
		- com.thunderforest.landscape: ①
			https://www.thunderforest.com/maps/landscape/
		- ch.swisstopo.pixelkarte-farbe: ②
			https://map.geo.admin.ch/?topic=swisstopo&bgLayer=ch.swisstopo.pixelkarte-farbe&lang=en
		- ch.swisstopo.swissimage: ②
			https://map.geo.admin.ch/?topic=swisstopo&bgLayer=ch.swisstopo.swissimage&lang=en
		Supported overlays:
		- ch.swisstopo.swisstlm3d-wanderwege: ②
			https://map.geo.admin.ch/?topic=swisstopo&bgLayer=ch.swisstopo.pixelkarte-farbe&lang=en&layers=ch.swisstopo.swisstlm3d-wanderwege&layers_opacity=0.8
		- ch.astra.mountainbikeland: ②
			https://map.geo.admin.ch/?topic=swisstopo&bgLayer=ch.swisstopo.pixelkarte-farbe&lang=en&layers=ch.astra.mountainbikeland&layers_opacity=0.6
		- ch.astra.veloland: ②
			https://map.geo.admin.ch/?topic=swisstopo&bgLayer=ch.swisstopo.pixelkarte-farbe&lang=en&layers=ch.astra.veloland&layers_opacity=0.6
		- ch.swisstopo.schneeschuhwandern: ②
			https://map.geo.admin.ch/?topic=swisstopo&bgLayer=ch.swisstopo.pixelkarte-farbe&lang=en&layers=ch.swisstopo.schneeschuhwandern
		- ch.swisstopo-karto.schneeschuhrouten: ②
			https://map.geo.admin.ch/?topic=swisstopo&bgLayer=ch.swisstopo.pixelkarte-farbe&lang=en&layers=ch.swisstopo-karto.schneeschuhrouten&layers_opacity=0.8
		Notes:
			① API key required.
			② Uses EPSG-2056 (Swiss CH1903+/LV95) projection. Cannot be combined with EPSG3857
			  (WGS 84) map layers.
	apiKey:
		API key for tile access.
	selectorPosition:
		Position of the layer selector button. One of: "topleft", "topright", "bottomleft", "bottomright"
		Optional, defaults to "bottomleft". If specified for more than one layer, the last one wins.

Marker options:

	lat/lon:
		Coordinates of the marker as decimal values.

Track options:

	path:
		Absolute or relative path of the .gpx file to render as a track.
	title:
		Name of the track, used e.g. to render the 'Download GPX' button when multiple tracks are present.
	color:
		Color to use for rendering the track.
		Optional, defaults to DeepPink.
	opacity:
		Opacity to use for rendering the track.
		Optional, defaults to 0.7.
	downloadable:
		Boolean value indicating whether there should be a 'Download GPX' button for this track.
		Optional, defaults to true.

Scale options:

	position:
		Position of the scale. One of: "topleft", "topright", "bottomleft", "bottomright"
		Optional, defaults to "bottomright".

Elevation profile options:

	resizable:
		Boolean value indicating whether the elevation profile box should be drag & drop resizable.
		Optional, defaults to false.
	expanded:
		Boolean value indicating whether the elevation profile should be expanded by default.
		Optional, defaults to true.
	width:
		Width of the elevation profile.
		Optional, defaults to 360.
	height:
		Height of the elevation profile.
		Optional, defaults to 180.
	minWidth:
		Minimum width of the elevation profile if resizable.
		Optional.
	minHeight:
		Minimum height of the elevation profile if resizable.
		Optional.
	maxWidth:
		Maximum width of the elevation profile if resizable.
		Optional.
	maxHeight:
		Maximum height of the elevation profile if resizable.
		Optional.

	Note: Elevation profiles are only supported if exactly one track is present.

*/}}

{{ $uniqueId := (printf "%s:%d" .Page.File.UniqueID .Ordinal) | md5 | safeJS }}

<div id="map_container_{{ $uniqueId }}" class="map-container" style="width: {{ .Get "width" | default "auto" }}; height: {{ .Get "height" | default "50vh" }};">
	<div id="map_{{ $uniqueId }}" class="map"></div>
	<div id="map_backdrop_{{ $uniqueId }}" class="map-backdrop"></div>
	<div id="map_attribution_{{ $uniqueId }}" class="map-attribution"></div>
</div>
<div id="map_track_downloads_{{ $uniqueId }}">
</div>

<script>
	var map_options_{{ $uniqueId }} = {
		element: 'map_{{ $uniqueId }}',
		center: null,
		zoom: null,
		layers: {
			enabled: [],
		},
		scale: false,
		maximize: {
			enabled: {{ .Get "maximizable" | default "true" | safeJS }},
		},
		freeze: {
			enabled: {{ .Get "freezable" | default "true" | safeJS }},
			{{ .Get "freezeOptions" | default "hoverToThawDuration: 1500" | safeJS }}
		},
		markers: [],
		tracks: [],
		heightgraph: null,
	};
</script>

{{ .Inner }}

<script>
	$(document).ready(function() {
		{
			var lat  = {{ .Get "centerLat" | default "null" | safeJS }};
			var lon  = {{ .Get "centerLon" | default "null" | safeJS }};
			var zoom = {{ .Get "zoom"      | default "null" | safeJS }};
			const needCenterAndZoom = map_options_{{ $uniqueId }}.markers.length == 0 && map_options_{{ $uniqueId }}.tracks.length == 0;
			if (needCenterAndZoom && (lat === null || lon === null || zoom === null))
			{
				$('#map_{{ $uniqueId }}').text("ERROR: Map without markers or tracks requires 'centerLat', 'centerLon', and 'zoom' parameters.");
				return;
			}
			if (lat !== null && lon !== null)
			{
				map_options_{{ $uniqueId }}.center = {
					lat: lat,
					lon: lon,
				};
			}
			if (zoom !== null)
			{
				map_options_{{ $uniqueId }}.zoom = zoom;
			}
		}

		// Create the map
		var map = Quip.createTrackMap(map_options_{{ $uniqueId }});

		{{ if .Get "resizable" | default "true" }}
		// Make the map resizable
		$('#map_container_{{ $uniqueId }}').resizable({
			handles: 'e, s, se',
			resize: () => map.invalidateSize(),
		});
		{{ end }}

		// Move the Leaflet attribution out of the map container
		$('#map_attribution_{{ $uniqueId }}').append(
			$('#map_container_{{ $uniqueId }} .leaflet-control-attribution')
		);

		// Restore the map when clicking outside the maximized map
		{
			const backdrop = L.DomUtil.get('map_backdrop_{{ $uniqueId }}');
			backdrop.addEventListener('click', ev => { map.restore(); });
		}

		// Create a download button for every downloadable track
		for (const track of map_options_{{ $uniqueId }}.tracks)
		{
			if (!track.downloadable)
				continue;

			const a = L.DomUtil.create(
				'a',
				'me-2 mb-2',
				L.DomUtil.get('map_track_downloads_{{ $uniqueId }}')
			);
			a.setAttribute('href', track.source);
			const button = L.DomUtil.create(
				'button',
				// Note that the following classes must be part of the safelist in hugo-theme-gallery-flex's tailwind.config.js:
				'py-2.5 px-5 me-2 mb-2 text-sm font-medium rounded-lg border focus:outline-none focus:z-10 focus:ring-4 dark:focus:ring-gray-700 dark:bg-gray-800 dark:text-gray-400 dark:border-gray-600 dark:hover:text-white dark:hover:bg-gray-700',
				a
			);
			button.innerHTML = track.title ? `Download GPX (${track.title})` : 'Download GPX';
		}
	});
</script>