update.ts

import * as path from "path";
import * as shelljs from "shelljs";

export class UpdateCommand implements ICommand {
	constructor(
		private $projectData: IProjectData,
		private $platformService: IPlatformService,
		private $pluginsService: IPluginsService,
		private $logger: ILogger,
		private $options: IOptions,
		private $errors: IErrors) { }

	public execute(args: string[]): IFuture<void> {
		return (() => {
			let folders = [ "lib", "hooks", "platforms", "node_modules" ];
			let tmpDir = path.join(this.$projectData.projectDir, ".tmp_backup");

			try {
				shelljs.rm("-fr", tmpDir);
				shelljs.mkdir(tmpDir);
				shelljs.cp(path.join(this.$projectData.projectDir, "package.json"), tmpDir);
				for (let folder of folders) {
					shelljs.cp("-rf", path.join(this.$projectData.projectDir, folder), tmpDir);
				}
			} catch(error) {
				this.$logger.error("Could not backup project folders!");
				return;
			}

			try {
				this.executeCore(args, folders);
			} catch (error) {
				shelljs.cp("-f", path.join(tmpDir, "package.json"), this.$projectData.projectDir);
				for (let folder of folders) {
					shelljs.rm("-rf", path.join(this.$projectData.projectDir, folder));
					shelljs.cp("-fr", path.join(tmpDir, folder), this.$projectData.projectDir);
				}
				this.$logger.error("Could not update the project!");
			} finally {
				shelljs.rm("-fr", tmpDir);
			}

		}).future<void>()();
	}

	public canExecute(args: string[]): IFuture<boolean> {
		return (() => {
			return args.length < 2 && this.$projectData.projectDir !== "";
		}).future<boolean>()();
	}

	private executeCore(args: string[], folders: string[]) {
		let platforms = this.$platformService.getInstalledPlatforms().wait();

		this.$platformService.removePlatforms(platforms).wait();
		this.$pluginsService.remove("tns-core-modules").wait();
		this.$pluginsService.remove("tns-core-modules-widgets").wait();

		for (let folder of folders) {
			shelljs.rm("-fr", folder);
		}

		if (args.length === 1) {
			for (let platform of platforms) {
				this.$platformService.addPlatforms([ platform+"@"+args[0] ]).wait();
			}
			this.$pluginsService.add("tns-core-modules@" + args[0]).wait();
		} else {
			this.$platformService.addPlatforms(platforms).wait();
			this.$pluginsService.add("tns-core-modules").wait();
		}
		this.$pluginsService.ensureAllDependenciesAreInstalled().wait();
	}

	allowedParameters: ICommandParameter[] = [];
}
$injector.registerCommand("update", UpdateCommand);