ML - dashboard icons and links (#10153)

* ML - dashboard icons and links

extensions/machine-learning/src/externalLanguage/languageService.ts

@@ -0,0 +1,59 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as azdata from 'azdata';
+import * as mssql from '../../../mssql';
+import { ApiWrapper } from '../common/apiWrapper';
+
+/**
+ * Manage package dialog model
+ */
+export class LanguageService {
+
+	public connection: azdata.connection.ConnectionProfile | undefined;
+	public connectionUrl: string = '';
+
+	constructor(
+		private _apiWrapper: ApiWrapper,
+		private _languageExtensionService: mssql.ILanguageExtensionService) {
+	}
+
+	public async load() {
+		this.connection = await this.getCurrentConnection();
+		this.connectionUrl = await this.getCurrentConnectionUrl();
+	}
+
+	public async getLanguageList(): Promise<mssql.ExternalLanguage[]> {
+		if (this.connectionUrl) {
+			return await this._languageExtensionService.listLanguages(this.connectionUrl);
+		}
+
+		return [];
+	}
+
+	public async deleteLanguage(languageName: string): Promise<void> {
+		if (this.connectionUrl) {
+			await this._languageExtensionService.deleteLanguage(this.connectionUrl, languageName);
+		}
+	}
+
+	public async updateLanguage(language: mssql.ExternalLanguage): Promise<void> {
+		if (this.connectionUrl) {
+			await this._languageExtensionService.updateLanguage(this.connectionUrl, language);
+		}
+	}
+
+	private async getCurrentConnectionUrl(): Promise<string> {
+		let connection = await this.getCurrentConnection();
+		if (connection) {
+			return await this._apiWrapper.getUriForConnection(connection.connectionId);
+		}
+		return '';
+	}
+
+	private async getCurrentConnection(): Promise<azdata.connection.ConnectionProfile> {
+		return await this._apiWrapper.getCurrentConnection();
+	}
+}