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import {Type} from 'main.core';
import {Content} from 'landing.ui.panel.content';

export class Link extends Content
{
	constructor()
	{
		super();

		this.instance = null;

		this.attr = BX.Landing.Utils.attr;
		this.join = BX.Landing.Utils.join;
		this.random = BX.Landing.Utils.random;
		this.setTextContent = BX.Landing.Utils.setTextContent;
		this.isPlainObject = BX.Landing.Utils.isPlainObject;
		this.isString = BX.Landing.Utils.isString;
		this.textToPlaceholders = BX.Landing.Utils.textToPlaceholders;
		this.findParent = BX.Landing.Utils.findParent;
		this.escapeText = BX.Landing.Utils.escapeText;

		BX.Landing.UI.Panel.Content.apply(this, arguments);
		this.layout.classList.add("landing-ui-panel-link");
		this.overlay.classList.add("landing-ui-panel-link");

		this.appendFooterButton(
			new BX.Landing.UI.Button.BaseButton("save_block_content", {
				text: BX.Landing.Loc.getMessage("BLOCK_SAVE"),
				onClick: this.save.bind(this),
				className: "landing-ui-button-content-save"
			})
		);
		this.appendFooterButton(
			new BX.Landing.UI.Button.BaseButton("cancel_block_content", {
				text: BX.Landing.Loc.getMessage("BLOCK_CANCEL"),
				onClick: this.hide.bind(this),
				className: "landing-ui-button-content-cancel"
			})
		);

		document.body.appendChild(this.layout);
	}

	static getInstance()
	{
		if (!this.instance)
		{
			this.instance = new BX.Landing.UI.Panel.Link("link_panel", {
				title: BX.Landing.Loc.getMessage("LANDING_EDIT_LINK")
			});
		}

		return this.instance;
	}

	show(node)
	{
		var form;

		this.title.innerHTML = BX.Landing.Loc.getMessage("LANDING_EDIT_LINK");

		if (!!node && node instanceof BX.Landing.Node.Link)
		{
			this.node = node;
			form = new BX.Landing.UI.Form.BaseForm({title: this.node.manifest.name});
			this.field = this.node.getField();
			form.addField(this.field);

			this.clear();
			this.appendForm(form);
			BX.Landing.UI.Panel.Content.show.call(this);
			BX.Landing.UI.Panel.EditorPanel.getInstance().hide();
		}

		if (!!node && (node instanceof BX.Landing.Node.Text || node instanceof BX.Landing.UI.Field.Text))
		{
			this.range = document.getSelection().getRangeAt(0);
			this.node = node;
			this.textField = BX.Landing.UI.Field.BaseField.currentField;

			if (!!this.textField && this.textField.isEditable())
			{
				this.node = this.textField;
			}

			var link = this.range.cloneContents().querySelector("a");

			if (!link)
			{
				link = this.findParent(this.range.startContainer, {tagName: "A"});
			}

			var href = "";
			var target = "";

			if (link)
			{
				href = link.getAttribute("href");
				target = link.getAttribute("target") || "_self";
			}
			else
			{
				this.title.innerHTML = BX.Landing.Loc.getMessage("LANDING_CREATE_LINK");
			}

			form = new BX.Landing.UI.Form.BaseForm({title: ""});
			BX.remove(form.header);

			var allowedTypes = [
				BX.Landing.UI.Field.LinkUrl.TYPE_BLOCK,
				BX.Landing.UI.Field.LinkUrl.TYPE_PAGE
			];

			if (BX.Landing.Main.getInstance().options.params.type === 'STORE')
			{
				allowedTypes.push(BX.Landing.UI.Field.LinkUrl.TYPE_CATALOG);
			}

			this.field = new BX.Landing.UI.Field.Link({
				title: BX.Landing.Loc.getMessage("FIELD_LINK_TEXT_LABEL"),
				content: {
					text: this.textToPlaceholders(this.escapeText(link ? link.innerText : this.range.toString())),
					href: this.escapeText(href),
					target: this.escapeText(target)
				},
				options: {
					siteId: BX.Landing.Main.getInstance().options.site_id,
					landingId: BX.Landing.Main.getInstance().id,
					filter: {
						'=TYPE': BX.Landing.Main.getInstance().options.params.type
					}
				},
				allowedTypes: allowedTypes
			});
			form.addField(this.field);

			this.clear();
			this.appendForm(form);
			BX.Landing.UI.Panel.Content.show.call(this);
		}
	}

	save()
	{
		if (this.field.isChanged())
		{
			if (!!this.node && this.node instanceof BX.Landing.Node.Link)
			{
				this.node.setValue(this.field.getValue());
			}
			else
			{
				var value = this.field.getValue();
				document.getSelection().removeAllRanges();
				document.getSelection().addRange(this.range);
				this.node.enableEdit();

				var tmpHref = this.escapeText(this.join(value.href, this.random()));
				var selection = document.getSelection();

				document.execCommand("createLink", false, tmpHref);

				var link = selection.anchorNode
					.parentElement
					.parentElement
					.parentElement
					.querySelector(this.join("[href=\"", tmpHref, "\"]"));

				if (link)
				{
					this.attr(link, "href", value.href);
					this.attr(link, "target", value.target);

					if (this.isString(value.text))
					{
						if (value.text.includes("{{name}}"))
						{
							this.field.hrefInput.getPlaceholderData(value.href)
								.then(function(placeholdersData) {
									link.innerHTML = value.text.replace(
										new RegExp("{{name}}"),
										"<span data-placeholder=\"name\">"+placeholdersData.name+"</span>"
									);
								}.bind(this));
						}
						else
						{
							this.setTextContent(link, value.text);
						}
					}

					if (this.isPlainObject(value.attrs))
					{
						this.attr(link, value.attrs);
					}
				}
			}
		}

		this.hide();
	}
}