// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT License.

import * as fs from 'fs';

export enum Architecture {

Unknown = 1,

x86 = 2,

x64 = 3

}

export enum RegistryHive {

HKCU, HKLM

}

export const IRegistry = Symbol('IRegistry');

export interface IRegistry {

getKeys(key: string, hive: RegistryHive, arch?: Architecture): Promise<string[]>;

getValue(key: string, hive: RegistryHive, arch?: Architecture, name?: string): Promise<string | undefined | null>;

}

export const IPlatformService = Symbol('IPlatformService');

export interface IPlatformService {

isWindows: boolean;

isMac: boolean;

isLinux: boolean;

is64bit: boolean;

pathVariableName: 'Path' | 'PATH';

virtualEnvBinName: 'bin' | 'scripts';

}

export const IFileSystem = Symbol('IFileSystem');

export interface IFileSystem {

directorySeparatorChar: string;

objectExists(path: string, statCheck: (s: fs.Stats) => boolean): Promise<boolean>;

fileExists(path: string): Promise<boolean>;

fileExistsSync(path: string): boolean;

directoryExists(path: string): Promise<boolean>;

createDirectory(path: string): Promise<void>;

getSubDirectories(rootDir: string): Promise<string[]>;

arePathsSame(path1: string, path2: string): boolean;

readFile(filePath: string): Promise<string>;

appendFileSync(filename: string, data: {}, encoding: string): void;

appendFileSync(filename: string, data: {}, options?: { encoding?: string; mode?: number; flag?: string }): void;

// tslint:disable-next-line:unified-signatures

appendFileSync(filename: string, data: {}, options?: { encoding?: string; mode?: string; flag?: string }): void;

getRealPath(path: string): Promise<string>;

copyFile(src: string, dest: string): Promise<void>;

deleteFile(filename: string): Promise<void>;

getFileHash(filePath: string): Promise<string | undefined>;

}