import { createDecorator } from '../../../../vs/platform/instantiation/common/instantiation';
import { CancellationToken } from '../../../../vs/base/common/cancellation';
import {
  IQuickPickItem,
  IPickOptions,
  IQuickPick,
  QuickPickInput,
} from '../../../../vs/base/parts/quickinput/common/quickInput';
import { IQuickAccessController } from '../../../../vs/platform/quickinput/common/quickAccess';

export * from '../../../../vs/base/parts/quickinput/common/quickInput';

export const IQuickInputService =
  createDecorator<IQuickInputService>('quickInputService');

export type Omit<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>;

export interface IQuickInputService {
  readonly _serviceBrand: undefined;

  /**
   * Provides access to the quick access providers.
   */
  readonly quickAccess: IQuickAccessController;

  /**
   * Opens the quick input box for selecting items and returns a promise
   * with the user selected item(s) if any.
   */
  pick<T extends IQuickPickItem>(
    picks: Promise<QuickPickInput<T>[]> | QuickPickInput<T>[],
    options?: IPickOptions<T> & { canPickMany: true },
    token?: CancellationToken
  ): Promise<T[] | undefined>;
  pick<T extends IQuickPickItem>(
    picks: Promise<QuickPickInput<T>[]> | QuickPickInput<T>[],
    options?: IPickOptions<T> & { canPickMany: false },
    token?: CancellationToken
  ): Promise<T | undefined>;
  pick<T extends IQuickPickItem>(
    picks: Promise<QuickPickInput<T>[]> | QuickPickInput<T>[],
    options?: Omit<IPickOptions<T>, 'canPickMany'>,
    token?: CancellationToken
  ): Promise<T | undefined>;

  /**
   * Provides raw access to the quick pick controller.
   */
  createQuickPick<T extends IQuickPickItem>(): IQuickPick<T>;
}