Added state controller

Author: mikecentola

src/util/stateControl.ts

@@ -0,0 +1,65 @@
+/* ---------------------------------------------------------------------------------------------
+ *  Copyright (c) Applied Eng & Design All rights reserved.
+ *  Licensed under the MIT License. See License.md in the project root for license information.
+ * -------------------------------------------------------------------------------------------- */
+'use strict';
+
+import { ExtensionContext } from 'vscode';
+import { constants } from './constants';
+import { LocalStorageService } from './localStorageService';
+import { Version } from './version';
+
+export interface IState extends Record<string, unknown> {
+    previousVersion: string;
+    version: string;
+}
+
+const enum Loc {
+    Global = 'global',
+    WS = 'workspace',
+}
+
+export class StateControl {
+    private defaults: IState = {
+        previousVersion: '0.0.0',
+        version: '0.0.0',
+    };
+
+    private _state: IState;
+    private _storageManager: LocalStorageService;
+
+    constructor(context: ExtensionContext) {
+        this._storageManager = new LocalStorageService(context);
+        this._state = this.getState();
+    }
+
+    private getState(): IState {
+        return this._storageManager.getValue<IState>(constants.configId, Loc.Global) ?? this.defaults;
+    }
+
+    async deleteState(): Promise<void> {
+        await this._storageManager.deleteValue(constants.configId, Loc.Global);
+    }
+
+    private async writeState(): Promise<void> {
+        await this._storageManager.setValue<IState>(constants.configId, this._state, Loc.Global);
+    }
+
+    getVersion(): Version {
+        return new Version(this._state.version);
+    }
+
+    async updateVer(ver: Version | string): Promise<void> {
+        let newVer: Version;
+        if (typeof ver === 'string') {
+            newVer = new Version(ver);
+        } else {
+            newVer = ver;
+        }
+
+        this._state.previousVersion = this._state.version;
+        this._state.version = newVer.getVersionAsString();
+
+        await this.writeState();
+    }
+}