/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the Source EULA. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import type * as vscode from 'vscode';
import { IEditorTabDto, IExtHostEditorTabsShape } from 'vs/workbench/api/common/extHost.protocol';
import { URI } from 'vs/base/common/uri';
import { Emitter, Event } from 'vs/base/common/event';
import { createDecorator } from 'vs/platform/instantiation/common/instantiation';

export interface IEditorTab {
	name: string;
	group: number;
	resource: vscode.Uri
	isActive: boolean
}

export interface IExtHostEditorTabs extends IExtHostEditorTabsShape {
	readonly _serviceBrand: undefined;
	tabs: readonly IEditorTab[];
	onDidChangeTabs: Event<void>;
}

export const IExtHostEditorTabs = createDecorator<IExtHostEditorTabs>('IExtHostEditorTabs');

export class ExtHostEditorTabs implements IExtHostEditorTabs {
	readonly _serviceBrand: undefined;

	private readonly _onDidChangeTabs = new Emitter<void>();
	readonly onDidChangeTabs: Event<void> = this._onDidChangeTabs.event;

	private _tabs: IEditorTab[] = [];

	get tabs(): readonly IEditorTab[] {
		return this._tabs;
	}

	$acceptEditorTabs(tabs: IEditorTabDto[]): void {
		this._tabs = tabs.map(dto => {
			return {
				name: dto.name,
				group: dto.group,
				resource: URI.revive(dto.resource),
				isActive: dto.isActive
			};
		});
		this._onDidChangeTabs.fire();
	}
}