import { Event } from 'vscode';

import { IPersistentState } from '../types';

export const IExtensionChannelRule = Symbol('IExtensionChannelRule');

export interface IExtensionChannelRule {

/**

* Return `true` if insiders build is required to be installed for the channel

* @param isChannelRuleNew Carries boolean `true` if insiders channel just changed to this channel rule

*/

shouldLookForInsidersBuild(isChannelRuleNew?: boolean): Promise<boolean>;

}

export const IExtensionChannelService = Symbol('IExtensionChannelService');

export interface IExtensionChannelService {

readonly onDidChannelChange: Event<ExtensionChannels>;

readonly isChannelUsingDefaultConfiguration: boolean;

getChannel(): ExtensionChannels;

updateChannel(value: ExtensionChannels): Promise<void>;

}

export const IInsiderExtensionPrompt = Symbol('IInsiderExtensionPrompt');

export interface IInsiderExtensionPrompt {

/**

* Carries boolean `false` for the first session when user has not been notified.

* Gets updated to `true` once user has been prompted to install insiders.

*/

readonly hasUserBeenNotified: IPersistentState<boolean>;

notifyToInstallInsiders(): Promise<void>;

promptToReload(): Promise<void>;

}

/**

* Note the values in this enum must belong to `ExtensionChannels` type

*/

export enum ExtensionChannel {

/**

* "off" setting is defined as a no op, which means user keeps using the extension they are using

*/

off = 'off',

weekly = 'weekly',

daily = 'daily'

}

export type ExtensionChannels = 'off' | 'weekly' | 'daily';