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import { Base } from 'landing.node.base';

const debounce = BX.Landing.Utils.debounce;
const data = BX.Landing.Utils.data;
const proxy = BX.Landing.Utils.proxy;
const onCustomEvent = BX.Landing.Utils.onCustomEvent;
const encodeDataValue = BX.Landing.Utils.encodeDataValue;

export class Map extends Base
{
	constructor(options)
	{
		super(options);

		this.type = 'map';
		this.attribute = 'data-map';
		this.hidden = true;
		this.createMap();
		this.lastValue = this.getValue();
		this.onBlockUpdateAttrs = this.onBlockUpdateAttrs.bind(this);
		onCustomEvent('BX.Landing.Block:Node:updateAttr', this.onBlockUpdateAttrs);
	}

	createMap()
	{
		this.mapOptions = {
			mapContainer: this.node,
			mapOptions: data(this.node, 'data-map'),
			theme: data(this.node, 'data-map-theme'),
			roads: data(this.node, 'data-map-roads') || [],
			landmarks: data(this.node, 'data-map-landmarks') || [],
			labels: data(this.node, 'data-map-labels') || [],
			onMapClick: proxy(this.onMapClick, this),
			onChange: debounce(this.onChange, 500, this),
			fullscreenControl: false,
			mapTypeControl: false,
			zoomControl: false,
		};
		this.map = BX.Landing.Provider.Map.create(this.node, this.mapOptions);
	}

	reInitMap()
	{
		const prevOptions = BX.Runtime.clone(this.mapOptions);

		this.mapOptions.mapOptions = data(this.node, 'data-map');
		this.mapOptions.theme = data(this.node, 'data-map-theme');
		this.mapOptions.roads = data(this.node, 'data-map-roads') || [];
		this.mapOptions.landmarks = data(this.node, 'data-map-landmarks') || [];
		this.mapOptions.labels = data(this.node, 'data-map-labels') || [];

		if (prevOptions !== this.mapOptions)
		{
			this.map.reinit(this.mapOptions);
		}
	}

	onBlockUpdateAttrs(event)
	{
		if (event.node === this.node)
		{
			this.reInitMap();
			this.lastValue = this.getValue();
		}
	}

	onMapClick(event)
	{
		if (BX.Landing.UI.Panel.StylePanel.getInstance().isShown())
		{
			return;
		}

		this.map.addMarker({
			latLng: this.map.getPointByEvent(event),
			title: '',
			description: '',
			showByDefault: false,
			draggable: true,
			editable: true,
		});

		this.map.onMarkerClick(this.map.markers[this.map.markers.length - 1]);
	}

	onChange(preventHistory)
	{
		if (this.isChanged())
		{
			if (!preventHistory)
			{
				BX.Landing.History.getInstance().push();
			}

			this.lastValue = this.getValue();
			this.onChangeHandler(this, preventHistory);
		}
	}

	isChanged(): boolean
	{
		return JSON.stringify(this.getValue()) !== JSON.stringify(this.lastValue);
	}

	getValue(): string | null
	{
		return this.map && this.map.isApiLoaded()
			? this.map.getValue()
			: null;
	}

	getAttrValue(): string
	{
		return encodeDataValue(this.getValue());
	}

	setValue(value, preventSave, preventHistory)
	{
		this.map.setValue(value, preventHistory);
	}

	getField(): BX.Landing.UI.Field.BaseField
	{
		return new BX.Landing.UI.Field.BaseField({
			selector: this.selector,
			hidden: true,
		});
	}
}

BX.Landing.Node.Map = Map;