Move query history into extension (#19794)

* initial

* more

* Remove connectionId

* cleanup

* cleanup

* Remove core contributions, add to panel by default

* Add enabled state

* Update config

* cleanup

* Move

* Remove newlines

* update README

extensions/query-history/src/queryHistoryProvider.ts

@@ -0,0 +1,80 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+import * as azdata from 'azdata';
+import { QueryHistoryNode } from './queryHistoryNode';
+
+const QUERY_HISTORY_CONFIG_SECTION = 'queryHistory';
+const CAPTURE_ENABLED_CONFIG_SECTION = 'captureEnabled';
+const DEFAULT_CAPTURE_ENABLED = true;
+
+export class QueryHistoryProvider implements vscode.TreeDataProvider<QueryHistoryNode>, vscode.Disposable {
+
+	private _onDidChangeTreeData: vscode.EventEmitter<QueryHistoryNode | undefined> = new vscode.EventEmitter<QueryHistoryNode | undefined>();
+	readonly onDidChangeTreeData: vscode.Event<QueryHistoryNode | undefined> = this._onDidChangeTreeData.event;
+
+	private _queryHistoryNodes: QueryHistoryNode[] = [];
+	private _captureEnabled: boolean = true;
+
+	private _disposables: vscode.Disposable[] = [];
+
+	constructor() {
+		this._disposables.push(azdata.queryeditor.registerQueryEventListener({
+			onQueryEvent: async (type: azdata.queryeditor.QueryEventType, document: azdata.queryeditor.QueryDocument, args: azdata.ResultSetSummary | string | undefined, queryInfo?: azdata.queryeditor.IQueryInfo) => {
+				if (this._captureEnabled && queryInfo && type === 'queryStop') {
+					const queryText = queryInfo.queryText ?? '';
+					const connProfile = await azdata.connection.getConnection(document.uri);
+					const isError = queryInfo.messages.find(m => m.isError) ? false : true;
+					// Add to the front of the list so the new item appears at the top
+					this._queryHistoryNodes.unshift(new QueryHistoryNode(queryText, connProfile, new Date(), isError));
+					this._onDidChangeTreeData.fire(undefined);
+				}
+			}
+		}));
+		this.updateCaptureEnabled();
+		this._disposables.push(vscode.workspace.onDidChangeConfiguration(e => {
+			if (e.affectsConfiguration(QUERY_HISTORY_CONFIG_SECTION)) {
+				this.updateCaptureEnabled();
+			}
+		}));
+	}
+
+	public clearAll(): void {
+		this._queryHistoryNodes = [];
+		this._onDidChangeTreeData.fire(undefined);
+	}
+
+	public deleteNode(node: QueryHistoryNode): void {
+		this._queryHistoryNodes = this._queryHistoryNodes.filter(n => n !== node);
+		this._onDidChangeTreeData.fire(undefined);
+	}
+	public getTreeItem(node: QueryHistoryNode): vscode.TreeItem {
+		return node;
+	}
+
+	public getChildren(element?: QueryHistoryNode): QueryHistoryNode[] {
+		// We only have top level items
+		return this._queryHistoryNodes;
+	}
+
+	public dispose(): void {
+		this._disposables.forEach(d => d.dispose());
+	}
+
+	private updateCaptureEnabled(): void {
+		this._captureEnabled = vscode.workspace.getConfiguration(QUERY_HISTORY_CONFIG_SECTION).get(CAPTURE_ENABLED_CONFIG_SECTION) ?? DEFAULT_CAPTURE_ENABLED;
+	}
+
+	/**
+	 * Set whether query history capture is currently enabled
+	 * @param enabled Whether capture is currently enabled
+	 * @returns A promise that resolves when the value is updated and persisted to configuration
+	 */
+	public async setCaptureEnabled(enabled: boolean): Promise<void> {
+		this._captureEnabled = enabled;
+		return vscode.workspace.getConfiguration(QUERY_HISTORY_CONFIG_SECTION).update(CAPTURE_ENABLED_CONFIG_SECTION, this._captureEnabled, vscode.ConfigurationTarget.Global);
+	}
+}