function reloadSidePreview()

in client/src/extension.ts [134:164]

• 27 lines of code
• 3 McCabe index (conditional complexity)

function reloadSidePreview(file:string, languageClient:LanguageClient) {
	let uri = Uri.parse(file);
	let stringifiedUri = uri.toString();
	let dotFile = uri.fsPath + ".dot";

	if (!fs.existsSync(dotFile)) {
		window.showErrorMessage("Error previewing graph. Please run `pip3 install cfn-lint pydot --upgrade`");
		return;
	}
	let content = fs.readFileSync(dotFile, 'utf8');

	if (!previews[stringifiedUri]) {
		previews[stringifiedUri] = VsCodeWindow.createWebviewPanel(
			'cfnLintPreview', // Identifies the type of the webview. Used internally
			'Template: ' + dotFile.slice(0,-4), // Title of the panel displayed to the user
			ViewColumn.Two, // Editor column to show the new webview panel in.
			{
				enableScripts: true,
			}
		);
		previews[stringifiedUri].onDidDispose(() => {
			// if the user closed the preview
			delete previews[stringifiedUri];
			fs.unlinkSync(dotFile);
			languageClient.sendNotification('cfn/previewClosed', stringifiedUri);
		});
	}

	const panel = previews[stringifiedUri];
	panel.webview.html = getPreviewContent(content);
}