feat: configure sketchbook location without restart

Closes #1764
Closes #796
Closes #569
Closes #655

Signed-off-by: Akos Kitta <a.kitta@arduino.cc>

arduino-ide-extension/src/browser/config/config-service-client.ts

@@ -0,0 +1,106 @@
+import { FrontendApplicationContribution } from '@theia/core/lib/browser/frontend-application';
+import { FrontendApplicationStateService } from '@theia/core/lib/browser/frontend-application-state';
+import { DisposableCollection } from '@theia/core/lib/common/disposable';
+import { Emitter, Event } from '@theia/core/lib/common/event';
+import { MessageService } from '@theia/core/lib/common/message-service';
+import { deepClone } from '@theia/core/lib/common/objects';
+import URI from '@theia/core/lib/common/uri';
+import {
+  inject,
+  injectable,
+  postConstruct,
+} from '@theia/core/shared/inversify';
+import { ConfigService, ConfigState } from '../../common/protocol';
+import { NotificationCenter } from '../notification-center';
+
+@injectable()
+export class ConfigServiceClient implements FrontendApplicationContribution {
+  @inject(ConfigService)
+  private readonly delegate: ConfigService;
+  @inject(NotificationCenter)
+  private readonly notificationCenter: NotificationCenter;
+  @inject(FrontendApplicationStateService)
+  private readonly appStateService: FrontendApplicationStateService;
+  @inject(MessageService)
+  private readonly messageService: MessageService;
+
+  private readonly didChangeSketchDirUriEmitter = new Emitter<
+    URI | undefined
+  >();
+  private readonly didChangeDataDirUriEmitter = new Emitter<URI | undefined>();
+  private readonly toDispose = new DisposableCollection(
+    this.didChangeSketchDirUriEmitter,
+    this.didChangeDataDirUriEmitter
+  );
+
+  private config: ConfigState | undefined;
+
+  @postConstruct()
+  protected init(): void {
+    this.appStateService.reachedState('ready').then(async () => {
+      const config = await this.fetchConfig();
+      this.use(config);
+    });
+  }
+
+  onStart(): void {
+    this.notificationCenter.onConfigDidChange((config) => this.use(config));
+  }
+
+  onStop(): void {
+    this.toDispose.dispose();
+  }
+
+  get onDidChangeSketchDirUri(): Event<URI | undefined> {
+    return this.didChangeSketchDirUriEmitter.event;
+  }
+
+  get onDidChangeDataDirUri(): Event<URI | undefined> {
+    return this.didChangeDataDirUriEmitter.event;
+  }
+
+  async fetchConfig(): Promise<ConfigState> {
+    return this.delegate.getConfiguration();
+  }
+
+  /**
+   * CLI config related error messages if any.
+   */
+  tryGetMessages(): string[] | undefined {
+    return this.config?.messages;
+  }
+
+  /**
+   * `directories.user`
+   */
+  tryGetSketchDirUri(): URI | undefined {
+    return this.config?.config?.sketchDirUri
+      ? new URI(this.config?.config?.sketchDirUri)
+      : undefined;
+  }
+
+  /**
+   * `directories.data`
+   */
+  tryGetDataDirUri(): URI | undefined {
+    return this.config?.config?.dataDirUri
+      ? new URI(this.config?.config?.dataDirUri)
+      : undefined;
+  }
+
+  private use(config: ConfigState): void {
+    const oldConfig = deepClone(this.config);
+    this.config = config;
+    if (oldConfig?.config?.sketchDirUri !== this.config?.config?.sketchDirUri) {
+      this.didChangeSketchDirUriEmitter.fire(this.tryGetSketchDirUri());
+    }
+    if (oldConfig?.config?.dataDirUri !== this.config?.config?.dataDirUri) {
+      this.didChangeDataDirUriEmitter.fire(this.tryGetDataDirUri());
+    }
+    if (this.config.messages?.length) {
+      const message = this.config.messages.join(' ');
+      // toast the error later otherwise it might not show up in IDE2
+      setTimeout(() => this.messageService.error(message), 1_000);
+    }
+  }
+}