Update plugin command added

Author: enchev

docs/man_pages/lib-management/plugin-update.md

@@ -0,0 +1,34 @@
+plugin update
+==========
+
+Usage | Synopsis
+------|-------
+General | `$ tns plugin update <Plugin(s)>`
+
+<% if(isConsole) { %>Uninstalls and installs the specified plugin(s) and any packages that it depends on.<% } %>
+<% if(isHtml) { %>Uninstalls and installs the specified plugin(s) and its dependencies in the local `node_modules` folder, adds it to the `dependencies` section in `package.json`, and prepares the plugin(s) for all installed platforms. If you have not configured any platforms for the project, the NativeScript CLI will prepare the plugin(s) when you add a platform. For more information about working with plugins, see [NativeScript Plugins](https://github.com/NativeScript/nativescript-cli/blob/master/PLUGINS.md).<% } %>
+
+### Attributes
+
+* `<Plugin(s)>` is a valid NativeScript plugin or list of plugins, specified by any of the following. If not specified the command will use currently installed plugins in the project.
+    * A `<Name>` or `<Name>@<Version>` where `<Name>` is the name of a plugin that is published in the npm registry and `<Version>` is a valid version of this plugin.
+    * A `<Local Path>` to the directory which contains the plugin, including its `package.json` file.
+    * A `<Local Path>` to a `.tar.gz` archive containing a directory with the plugin and its `package.json` file.
+    * A `<URL>` which resolves to a `.tar.gz` archive containing a directory with the plugin and its `package.json` file.
+    * A `<git Remote URL>` which resolves to a `.tar.gz` archive containing a directory with the plugin and its `package.json` file.
+
+<% if(isHtml) { %>
+### Prerequisites
+
+* Verify that the plugin that you want to add contains a valid `package.json` file. Valid `package.json` files contain a `nativescript` section.
+
+### Related Commands
+
+Command | Description
+----------|----------
+[plugin](plugin.html) | Lets you manage the plugins for your project.
+[plugin add](plugin-add.html) | Installs the specified plugin and its dependencies.
+[plugin remove](plugin-remove.html) | Uninstalls the specified plugin and its dependencies.
+[plugin find](plugin-find.html) | Finds NativeScript plugins in npm.
+[plugin search](plugin-search.html) | Finds NativeScript plugins in npm.
+<% } %>

docs/man_pages/lib-management/plugin.md

@@ -12,6 +12,7 @@ Lets you manage the plugins for your project.
 `<Command>` extends the `plugin` command. You can set the following values for this attribute.
 * `add` - Installs the specified plugin and its dependencies.
 * `remove` - Uninstalls the specified plugin and its dependencies.
+* `update` - Uninstalls and installs the specified plugin(s) and its dependencies.
 * `find` - Finds NativeScript plugins in npm.
 * `search` - Finds NativeScript plugins in npm.
 
@@ -22,6 +23,7 @@ Command | Description
 ----------|----------
 [plugin add](plugin-add.html) | Installs the specified plugin and its dependencies.
 [plugin remove](plugin-remove.html) | Uninstalls the specified plugin and its dependencies.
+[plugin update](plugin-update.html) | Updates the specified plugin(s) and its dependencies.
 [plugin find](plugin-find.html) | Finds NativeScript plugins in npm.
 [plugin search](plugin-search.html) | Finds NativeScript plugins in npm.
 <% } %>

lib/bootstrap.ts

@@ -86,6 +86,7 @@ $injector.requireCommand("plugin|search", "./commands/plugin/find-plugins");
 $injector.requireCommand("plugin|add", "./commands/plugin/add-plugin");
 $injector.requireCommand("plugin|install", "./commands/plugin/add-plugin");
 $injector.requireCommand("plugin|remove", "./commands/plugin/remove-plugin");
+$injector.requireCommand("plugin|update", "./commands/plugin/update-plugin");
 
 $injector.require("doctorService", "./services/doctor-service");
 $injector.require("xcprojService", "./services/xcproj-service");

lib/commands/plugin/update-plugin.ts

@@ -0,0 +1,41 @@
+export class UpdatePluginCommand implements ICommand {
+	constructor(private $pluginsService: IPluginsService,
+		private $errors: IErrors) { }
+
+	execute(args: string[]): IFuture<void> {
+		return (() => {
+			let pluginNames = args;
+
+			if (!pluginNames || args.length === 0) {
+				let installedPlugins = this.$pluginsService.getAllInstalledPlugins().wait();
+				pluginNames = installedPlugins.map(p => p.name);
+			}
+
+			_.each(pluginNames, p => {
+				this.$pluginsService.remove(p).wait();
+				this.$pluginsService.add(p).wait();
+			});
+		}).future<void>()();
+	}
+
+	canExecute(args: string[]): IFuture<boolean> {
+		return (() => {
+			if (!args || args.length === 0) {
+				return true;
+			}
+
+			let installedPlugins = this.$pluginsService.getAllInstalledPlugins().wait();
+			let installedPluginNames: string[] = installedPlugins.map(pl => pl.name);
+
+			let pluginName = args[0].toLowerCase();
+			if (!_.some(installedPluginNames, name => name.toLowerCase() === pluginName)) {
+				this.$errors.failWithoutHelp(`Plugin "${pluginName}" is not installed.`);
+			}
+
+			return true;
+		}).future<boolean>()();
+	}
+
+	public allowedParameters: ICommandParameter[] = [];
+}
+$injector.registerCommand("plugin|update", UpdatePluginCommand);