// Copyright (c) 2022 Sebastian Panknin

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.


define("map", ["openlayer", "htmlTools"], function(ol, h) {
    const mapSvgId = "mapSvg";
    const markerRadius = 10;
    const textOffset = 5;
    const vectorSource = new ol.source.Vector({
	features: []
    });

    let markerIcon;
    let markerFocusIcon;
    const highlightStyle = symbol => new ol.style.Style({
	image: new ol.style.Icon({
	    scale: 0.05,
	    color: "#ffa900",            // "#0093c7",
	    crossOrigin: 'anonymous',
	    src: markerFocusIcon
	}),
	text: new ol.style.Text({
	    text: String(symbol),
	    font: '10px Calibri,sans-serif',
	    fill: new ol.style.Fill({
		color: '#fff'
	    })
	})
    }); 
    const normalStyle = symbol => new ol.style.Style({
	image: new ol.style.Icon({
	    scale: 0.15,
	    color: "#bd1400",           // "#00335b",
	    crossOrigin: 'anonymous',
	    src: markerIcon
	}),
	text: new ol.style.Text({
	    text: String(symbol),
	    font: '10px Calibri,sans-serif',
	    fill: new ol.style.Fill({
		color: '#fff'
	    })
	})
    });
    
    
    const init = function(target, mapsrc, config) {
	markerIcon = config.pointerImage;
	markerFocusIcon = config.pointerFocusImage;
	    
	ol.proj.useGeographic();
	
	const vectorLayer = new ol.layer.Vector({
	    source: vectorSource
	});
	
	const map = new ol.Map({
	    target: "map",
	    layers: [
		new ol.layer.Tile({
		    source: new ol.source.OSM()
		}),
		vectorLayer
	    ],
	    view: new ol.View({
		center: [config.center.long, config.center.lat],
		zoom: 18
	    })
	})
    };

    const addMarker = function(long, lat, symbol, id) {
	const oldMarkers = vectorSource.getFeatures().filter(m => m.getId() === symbol)
	oldMarkers.forEach(m => vectorSource.removeFeature(m))
	
	const marker = new ol.Feature({
	    geometry: new ol.geom.Point([long, lat])
	});

	marker.setId(id || symbol)
	marker.setStyle(normalStyle(symbol));

	vectorSource.addFeature(marker)
    };

    const clearMarker = function(){
	const oldMarkers = vectorSource.getFeatures();
	oldMarkers.forEach(m => vectorSource.removeFeature(m));
    };

    const setMarkers = function(data){
	clearMarker();
	data.forEach(d => { 
	    if (d.number) {
	 	d.positions.forEach((p, i) => addMarker(p.long, p.lat, d.number, d.number + "-" + i));
	    }
	})
    };

    const changeStyle = function(symbol, style) {
	const markers = vectorSource.getFeatures().filter(m => m.getId()?.match(symbol))
	markers.forEach(m => m.setStyle(style))
    };
    
    return {
	init: init,
	addMarker: addMarker,
	setMarkers: setMarkers,
	clearMarker: clearMarker,
	highlight: symbol => changeStyle(symbol, highlightStyle(symbol)),
	fade: symbol => changeStyle(symbol, normalStyle(symbol)),
	vc: vectorSource
    };
});