Add validation error message for inputbox component (#8909)

* add validation error message for inputbox component

* addressing comments

* remove copying entire definition for InputBoxProperties

extensions/dacpac/src/wizard/api/basePage.ts

@@ -14,6 +14,7 @@ export abstract class BasePage {
 	protected readonly wizardPage: azdata.window.WizardPage;
 	protected readonly model: DacFxDataModel;
 	protected readonly view: azdata.ModelView;
+	protected databaseValues: string[];
 
 	/**
 	 * This method constructs all the elements of the page.
@@ -105,30 +106,27 @@ export abstract class BasePage {
 		return values;
 	}
 
-	protected async getDatabaseValues(): Promise<{ displayName: string, name: string }[]> {
+	protected async getDatabaseValues(): Promise<string[]> {
 		let idx = -1;
 		let count = -1;
-		let values = (await azdata.connection.listDatabases(this.model.server.connectionId)).map(db => {
+		this.databaseValues = (await azdata.connection.listDatabases(this.model.server.connectionId)).map(db => {
 			count++;
 			if (this.model.database && db === this.model.database) {
 				idx = count;
 			}
 
-			return {
-				displayName: db,
-				name: db
-			};
+			return db;
 		});
 
 		if (idx >= 0) {
-			let tmp = values[0];
-			values[0] = values[idx];
-			values[idx] = tmp;
+			let tmp = this.databaseValues[0];
+			this.databaseValues[0] = this.databaseValues[idx];
+			this.databaseValues[idx] = tmp;
 		} else {
 			this.deleteDatabaseValues();
 		}
 
-		return values;
+		return this.databaseValues;
 	}
 
 	protected deleteServerValues() {

extensions/dacpac/src/wizard/api/dacFxConfigPage.ts

@@ -11,7 +11,7 @@ import * as path from 'path';
 import { DataTierApplicationWizard, Operation } from '../dataTierApplicationWizard';
 import { DacFxDataModel } from './models';
 import { BasePage } from './basePage';
-import { sanitizeStringForFilename, isValidBasename } from './utils';
+import { sanitizeStringForFilename, isValidBasename, isValidBasenameErrorMessage } from './utils';
 
 const localize = nls.loadMessageBundle();
 
@@ -54,7 +54,11 @@ export abstract class DacFxConfigPage extends BasePage {
 		this.serverDropdown.onValueChanged(async () => {
 			this.model.server = (this.serverDropdown.value as ConnectionDropdownValue).connection;
 			this.model.serverName = (this.serverDropdown.value as ConnectionDropdownValue).displayName;
-			await this.populateDatabaseDropdown();
+			if (this.databaseDropdown) {
+				await this.populateDatabaseDropdown();
+			} else {
+				await this.getDatabaseValues();
+			}
 		});
 
 		return {
@@ -79,9 +83,12 @@ export abstract class DacFxConfigPage extends BasePage {
 	}
 
 	protected async createDatabaseTextBox(title: string): Promise<azdata.FormComponent> {
-		this.databaseTextBox = this.view.modelBuilder.inputBox().withProperties({
-			required: true
-		}).component();
+		this.databaseTextBox = this.view.modelBuilder.inputBox()
+			.withValidation(component => !this.databaseNameExists(component.value))
+			.withProperties({
+				required: true,
+				validationErrorMessage: localize('dacfx.databaseNameExistsErrorMessage', "A database with the same name already exists on the instance of SQL Server")
+			}).component();
 
 		this.databaseTextBox.ariaLabel = title;
 		this.databaseTextBox.onTextChanged(async () => {
@@ -130,10 +137,10 @@ export abstract class DacFxConfigPage extends BasePage {
 		let values = await this.getDatabaseValues();
 
 		// only update values and regenerate filepath if this is the first time and database isn't set yet
-		if (this.model.database !== values[0].name) {
+		if (this.model.database !== values[0]) {
 			// db should only get set to the dropdown value if it isn't deploy with create database
 			if (!(this.instance.selectedOperation === Operation.deploy && !this.model.upgradeExisting)) {
-				this.model.database = values[0].name;
+				this.model.database = values[0];
 			}
 			// filename shouldn't change for deploy because the file exists and isn't being generated as for extract and export
 			if (this.instance.selectedOperation !== Operation.deploy) {
@@ -159,6 +166,14 @@ export abstract class DacFxConfigPage extends BasePage {
 				ariaLive: 'polite'
 			}).component();
 
+		// Set validation error message if file name is invalid
+		this.fileTextBox.onTextChanged(text => {
+			const errorMessage = isValidBasenameErrorMessage(text);
+			if (errorMessage) {
+				this.fileTextBox.updateProperty('validationErrorMessage', errorMessage);
+			}
+		});
+
 		this.fileTextBox.ariaLabel = localize('dacfx.fileLocationAriaLabel', "File Location");
 		this.fileButton = this.view.modelBuilder.button().withProperties({
 			label: '•••',
@@ -192,6 +207,18 @@ export abstract class DacFxConfigPage extends BasePage {
 			this.fileTextBox.value = this.model.filePath;
 		}
 	}
+
+	// Compares database name with existing databases on the server
+	protected databaseNameExists(n: string): boolean {
+		for (let i = 0; i < this.databaseValues.length; ++i) {
+			if (this.databaseValues[i].toLowerCase() === n.toLowerCase()) {
+				// database name exists
+				return true;
+			}
+		}
+
+		return false;
+	}
 }
 
 interface ConnectionDropdownValue extends azdata.CategoryValue {

extensions/dacpac/src/wizard/api/utils.ts

@@ -4,11 +4,12 @@
  *--------------------------------------------------------------------------------------------*/
 import * as os from 'os';
 import * as path from 'path';
-
+import * as nls from 'vscode-nls';
 const WINDOWS_INVALID_FILE_CHARS = /[\\/:\*\?"<>\|]/g;
 const UNIX_INVALID_FILE_CHARS = /[\\/]/g;
 const isWindows = os.platform() === 'win32';
 const WINDOWS_FORBIDDEN_NAMES = /^(con|prn|aux|clock\$|nul|lpt[0-9]|com[0-9])$/i;
+const localize = nls.loadMessageBundle();
 
 /**
  * Determines if a given character is a valid filename character
@@ -88,4 +89,49 @@ export function isValidBasename(name: string | null | undefined): boolean {
 	}
 
 	return true;
-}
+}
+
+/**
+ * Returns specific error message if file name is invalid
+ * Logic is copied from src\vs\base\common\extpath.ts
+ * @param name filename to check
+ */
+export function isValidBasenameErrorMessage(name: string | null | undefined): string {
+	const invalidFileChars = isWindows ? WINDOWS_INVALID_FILE_CHARS : UNIX_INVALID_FILE_CHARS;
+	if (!name) {
+		return localize('dacfx.undefinedFileNameErrorMessage', "Undefined name");
+	}
+
+	if (isWindows && name[name.length - 1] === '.') {
+		return localize('dacfx.fileNameEndingInPeriodErrorMessage', "File name cannot end with a period"); // Windows: file cannot end with a "."
+	}
+
+	let basename = path.parse(name).name;
+	if (!basename || basename.length === 0 || /^\s+$/.test(basename)) {
+		return localize('dacfx.whitespaceFilenameErrorMessage', "File name cannot be whitespace"); // require a name that is not just whitespace
+	}
+
+	invalidFileChars.lastIndex = 0;
+	if (invalidFileChars.test(basename)) {
+		return localize('dacfx.invalidFileCharsErrorMessage', "Invalid file characters"); // check for certain invalid file characters
+	}
+
+	if (isWindows && WINDOWS_FORBIDDEN_NAMES.test(basename)) {
+		console.error('here');
+		return localize('dacfx.reservedWindowsFileNameErrorMessage', "This file name is reserved for use by Windows. Choose another name and try again"); // check for certain invalid file names
+	}
+
+	if (basename === '.' || basename === '..') {
+		return localize('dacfx.reservedValueErrorMessage', "Reserved file name. Choose another name and try again"); // check for reserved values
+	}
+
+	if (isWindows && basename.length !== basename.trim().length) {
+		return localize('dacfx.trailingWhitespaceErrorMessage', "File name cannot end with a whitespace"); // Windows: file cannot end with a whitespace
+	}
+
+	if (basename.length > 255) {
+		return localize('dacfx.tooLongFileNameErrorMessage', "File name is over 255 characters"); // most file systems do not allow files > 255 length
+	}
+
+	return '';
+}