// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.

// See LICENSE in the project root for license information.

import * as path from 'path';

import { FileSystem } from '@rushstack/node-core-library';

import { RushConfiguration } from '../api/RushConfiguration';

import { Utilities } from '../utilities/Utilities';

import { PnpmProjectDependencyManifest } from './pnpm/PnpmProjectDependencyManifest';

/**

* This class implements the logic for "rush unlink"

*/

export class UnlinkManager {

private _rushConfiguration: RushConfiguration;

public constructor(rushConfiguration: RushConfiguration) {

this._rushConfiguration = rushConfiguration;

}

/**

* Delete flag file and all the existing node_modules symlinks and all

* project/.rush/temp/shrinkwrap-deps.json files

*

* Returns true if anything was deleted.

*/

public unlink(): boolean {

this._deleteFlagFile();

return this._deleteProjectFiles();

}

/**

* Delete:

* - all the node_modules symlinks of configured Rush projects

* - all of the project/.rush/temp/shrinkwrap-deps.json files of configured Rush projects

*

* Returns true if anything was deleted

* */

private _deleteProjectFiles(): boolean {

let didDeleteAnything: boolean = false;

for (const rushProject of this._rushConfiguration.projects) {

const localModuleFolder: string = path.join(rushProject.projectFolder, 'node_modules');

if (FileSystem.exists(localModuleFolder)) {

console.log(`Purging ${localModuleFolder}`);

Utilities.dangerouslyDeletePath(localModuleFolder);

didDeleteAnything = true;

}

const projectDependencyManifestFilePath: string = PnpmProjectDependencyManifest.getFilePathForProject(

rushProject

);

if (FileSystem.exists(projectDependencyManifestFilePath)) {

console.log(`Deleting ${projectDependencyManifestFilePath}`);

FileSystem.deleteFile(projectDependencyManifestFilePath);

didDeleteAnything = true;

}

}

return didDeleteAnything;

}

/**

* Delete the flag file if it exists; this will ensure that

* a full "rush link" is required next time

*/

private _deleteFlagFile(): void {

Utilities.deleteFile(this._rushConfiguration.rushLinkJsonFilename);

}

}