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

import { IReference } from '../../../../vs/base/common/lifecycle';
import { URI } from '../../../../vs/base/common/uri';
import { ITextModel } from '../../../../vs/editor/common/model';
import { IEditorModel } from '../../../../vs/platform/editor/common/editor';
import { createDecorator } from '../../../../vs/platform/instantiation/common/instantiation';

export const ITextModelService =
  createDecorator<ITextModelService>('textModelService');

export interface ITextModelService {
  readonly _serviceBrand: undefined;

  /**
   * Provided a resource URI, it will return a model reference
   * which should be disposed once not needed anymore.
   */
  createModelReference(
    resource: URI
  ): Promise<IReference<IResolvedTextEditorModel>>;
}

export interface ITextEditorModel extends IEditorModel {
  /**
   * Provides access to the underlying `ITextModel`.
   */
  readonly textEditorModel: ITextModel | null;
}

export interface IResolvedTextEditorModel extends ITextEditorModel {
  /**
   * Same as ITextEditorModel#textEditorModel, but never null.
   */
  readonly textEditorModel: ITextModel;
}