Implement doctor command

docs/man_pages/general/autocomplete-disable.md

@@ -15,7 +15,8 @@ Command | Description
 ----------|----------
 [autocomplete](autocomplete.html) | Asks for confirmation if command line autocompletion should be enabled for bash and zsh.
 [autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
-[autocomplete-enable](autocomplete-enable.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
 [feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript command-line interface.
 [help](help.html) | Lists the available commands or shows information about the selected command.
+[doctor](doctor.html) | Checks your system and reports potential problems which may prevent developing with NativeScript.
 <% } %>

docs/man_pages/general/autocomplete-enable.md

@@ -18,4 +18,5 @@ Command | Description
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
 [feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript command-line interface.
 [help](help.html) | Lists the available commands or shows information about the selected command.
+[doctor](doctor.html) | Checks your system and reports potential problems which may prevent developing with NativeScript.
 <% } %>

docs/man_pages/general/autocomplete-status.md

@@ -13,8 +13,9 @@ Prints your current command-line completion settings.
 Command | Description
 ----------|----------
 [autocomplete](autocomplete.html) | Prints your current command-line completion settings. If disabled, prompts you to enable it.
-[autocomplete-enable](autocomplete-enable.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
 [feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript command-line interface.
 [help](help.html) | Lists the available commands or shows information about the selected command.
+[doctor](doctor.html) | Checks your system and reports potential problems which may prevent developing with NativeScript.
 <% } %>

docs/man_pages/general/autocomplete.md

@@ -24,7 +24,8 @@ Prints your current command-line completion settings. If disabled, prompts you t
 Command | Description
 ----------|----------
 [autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
-[autocomplete-enable](autocomplete-enable.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
 [feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript command-line interface.
+[doctor](doctor.html) | Checks your system and reports potential problems which may prevent developing with NativeScript.
 <% } %>

docs/man_pages/general/doctor.md

@@ -0,0 +1,19 @@
+doctor
+==========
+
+Usage | Synopsis
+------|-------
+General | `$ tns doctor`
+
+Checks your system and reports potential problems which may prevent developing with NativeScript.
+
+
+<% if(isHtml) { %> 
+### Related Commands
+
+Command | Description
+----------|----------
+[feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript CLI.
+[autocomplete](autocomplete.html) | Prints your current command-line completion settings. If disabled, prompts you to enable it.
+[help](help.html) | Lists the available commands or shows information about the selected command.
+<% } %>

docs/man_pages/general/feature-usage-tracking-disable.md

@@ -14,8 +14,9 @@ Command | Description
 [feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript CLI.
 [feature-usage-tracking status](feature-usage-tracking-status.html) | Shows the current configuration for anonymous usage tracking for the NativeScript CLI.
 [feature-usage-tracking enable](feature-usage-tracking-enable.html) | Enables anonymous usage statistics tracking.
-[autocomplete](autocomplete.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
 [autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
-[autocomplete-enable](autocomplete-enable.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
+[doctor](doctor.html) | Checks your system and reports potential problems which may prevent developing with NativeScript.
 <% } %>

docs/man_pages/general/feature-usage-tracking-enable.md

@@ -14,8 +14,9 @@ Command | Description
 [feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript CLI.
 [feature-usage-tracking status](feature-usage-tracking-status.html) | Shows the current configuration for anonymous usage tracking for the NativeScript CLI.
 [feature-usage-tracking disable](feature-usage-tracking-disable.html) | Disables anonymous usage statistics tracking.
-[autocomplete](autocomplete.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
 [autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
-[autocomplete-enable](autocomplete-enable.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
+[doctor](doctor.html) | Checks your system and reports potential problems which may prevent developing with NativeScript.
 <% } %>

docs/man_pages/general/feature-usage-tracking-status.md

@@ -14,8 +14,9 @@ Command | Description
 [feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript CLI.
 [feature-usage-tracking enable](feature-usage-tracking-enable.html) | Enables anonymous usage statistics tracking.
 [feature-usage-tracking disable](feature-usage-tracking-disable.html) | Disables anonymous usage statistics tracking.
-[autocomplete](autocomplete.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
 [autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
-[autocomplete-enable](autocomplete-enable.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
+[doctor](doctor.html) | Checks your system and reports potential problems which may prevent developing with NativeScript.
 <% } %>

docs/man_pages/general/feature-usage-tracking.md

@@ -23,8 +23,9 @@ Command | Description
 [feature-usage-tracking status](feature-usage-tracking-status.html) | Shows the current configuration for anonymous usage tracking for the NativeScript CLI.
 [feature-usage-tracking enable](feature-usage-tracking-enable.html) | Enables anonymous usage statistics tracking.
 [feature-usage-tracking disable](feature-usage-tracking-disable.html) | Disables anonymous usage statistics tracking.
-[autocomplete](autocomplete.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
 [autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
-[autocomplete-enable](autocomplete-enable.html) |[autocomplete](autocomplete.html) | Configures your current command-line completion settings.
+[autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
+[doctor](doctor.html) | Checks your system and reports potential problems which may prevent developing with NativeScript.
 <% } %>

docs/man_pages/general/help.md

@@ -20,4 +20,5 @@ Command | Description
 ----------|----------
 [feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript CLI.
 [autocomplete](autocomplete.html) | Prints your current command-line completion settings. If disabled, prompts you to enable it.
+[doctor](doctor.html) | Checks your system and reports potential problems which may prevent developing with NativeScript.
 <% } %>

lib/bootstrap.ts

@@ -58,4 +58,6 @@ $injector.require("broccoliPluginWrapper", "./tools/broccoli/broccoli-plugin-wra
 
 $injector.require("pluginsService", "./services/plugins-service");
 $injector.requireCommand("plugin|add", "./commands/plugin/add-plugin");
-$injector.requireCommand("plugin|remove", "./commands/plugin/remove-plugin");
+$injector.requireCommand("plugin|remove", "./commands/plugin/remove-plugin");
+
+$injector.require("doctorService", "./services/doctor-service");

lib/declarations.ts

@@ -63,3 +63,17 @@ interface IOptions extends ICommonOptions {
 	keyStoreAlias: string;
 	keyStoreAliasPassword: string;
 }
+
+/**
+ * Verifies the host OS configuration and prints warnings to the users
+ * Code behind of the "doctor" command
+ * @interface
+ */
+interface IDoctorService {
+	/**
+	 * Verifies the host OS configuration and prints warnings to the users
+	 *
+	 * @returns {boolean} true if at least one warning was printed
+	 */
+	printWarnings(): boolean;
+}

lib/services/doctor-service.ts

@@ -0,0 +1,79 @@
+///<reference path="../.d.ts"/>
+"use strict";
+import os = require("os");
+
+class DoctorService implements IDoctorService {
+
+	constructor(
+		private $hostInfo: IHostInfo,
+		private $sysInfo: ISysInfo,
+		private $logger: ILogger) {	}
+
+	public printWarnings(): boolean {
+		let result = false;
+		let sysInfo = this.$sysInfo.getSysInfo();
+
+		if (!sysInfo.adbVer) {
+			this.$logger.warn("WARNING: adb from the Android SDK is not installed or is not configured properly.");
+			this.$logger.out("For Android-related operations, the NativeScript CLI will use a built-in version of adb." + os.EOL
+			+ "To avoid possible issues with the native Android emulator, Genymotion or connected" + os.EOL
+			+ "Android devices, verify that you have installed the latest Android SDK and" + os.EOL
+			+ "its dependencies as described in http://developer.android.com/sdk/index.html#Requirements" + os.EOL);
+
+			this.printPackageManagerTip();
+			result = true;
+		}
+		if (!sysInfo.antVer) {
+			this.$logger.warn("WARNING: Apache Ant is not installed or is not configured properly.");
+			this.$logger.out("You will not be able to build your projects for Android." + os.EOL
+			+ "To be able to build for Android, download and install Apache Ant and" + os.EOL
+			+ "its dependencies as described in http://ant.apache.org/manual/index.html" + os.EOL);
+
+			this.printPackageManagerTip();
+			result = true;
+		}
+		if (!sysInfo.androidInstalled) {
+			this.$logger.warn("WARNING: The Android SDK is not installed or is not configured properly.");
+			this.$logger.out("You will not be able to build your projects for Android and run them in the native emulator." + os.EOL
+				+ "To be able to build for Android and run apps in the native emulator, verify that you have" + os.EOL
+				+ "installed the latest Android SDK and its dependencies as described in http://developer.android.com/sdk/index.html#Requirements" + os.EOL
+			);
+
+			this.printPackageManagerTip();
+			result = true;
+		}
+		if (this.$hostInfo.isDarwin && !sysInfo.xcodeVer) {
+			this.$logger.warn("WARNING: Xcode is not installed or is not configured properly.");
+			this.$logger.out("You will not be able to build your projects for iOS or run them in the iOS Simulator." + os.EOL
+			+ "To be able to build for iOS and run apps in the native emulator, verify that you have installed Xcode." + os.EOL);
+			result = true;
+		}
+		if (!sysInfo.itunesInstalled) {
+			this.$logger.warn("WARNING: iTunes is not installed.");
+			this.$logger.out("You will not be able to work with iOS devices via cable connection." + os.EOL
+			+ "To be able to work with connected iOS devices," + os.EOL
+			+ "download and install iTunes from http://www.apple.com" + os.EOL);
+			result = true;
+		}
+		if(!sysInfo.javaVer) {
+			this.$logger.warn("WARNING: The Java Development Kit (JDK) is not installed or is not configured properly.");
+			this.$logger.out("You will not be able to work with the Android SDK and you might not be able" + os.EOL
+				+ "to perform some Android-related operations. To ensure that you can develop and" + os.EOL
+				+ "test your apps for Android, verify that you have installed the JDK as" + os.EOL
+				+ "described in http://docs.oracle.com/javase/8/docs/technotes/guides/install/install_overview.html (for JDK 8)" + os.EOL
+				+ "or http://docs.oracle.com/javase/7/docs/webnotes/install/ (for JDK 7)." + os.EOL);
+			result = true;
+		}
+
+		return result;
+	}
+
+	private printPackageManagerTip() {
+		if (this.$hostInfo.isWindows) {
+			this.$logger.out("TIP: To avoid setting up the necessary environment variables, you can use the chocolatey package manager to install the Android SDK and its dependencies." + os.EOL);
+		} else if (this.$hostInfo.isDarwin) {
+			this.$logger.out("TIP: To avoid setting up the necessary environment variables, you can use the Homebrew package manager to install the Android SDK and its dependencies." + os.EOL);
+		}
+	}
+}
+$injector.register("doctorService", DoctorService);