export async function promptForUpdatingTool()

in src/goInstallTools.ts [453:526]
63 lines of code
15 McCabe index (conditional complexity)

export async function promptForUpdatingTool(
	toolName: string,
	newVersion?: semver.SemVer,
	crashed?: boolean,
	message?: string
) {
	const tool = getTool(toolName);
	if (!tool) {
		return; // not a tool known to us.
	}
	const toolVersion = { ...tool, version: newVersion }; // ToolWithVersion

	// If user has declined to update, then don't prompt.
	if (containsTool(declinedUpdates, tool)) {
		return;
	}

	// Adjust the prompt if it occurred because the tool crashed.
	let updateMsg: string;
	if (message) {
		updateMsg = message;
	} else if (crashed === true) {
		updateMsg = `${tool.name} has crashed, but you are using an outdated version. Please update to the latest version of ${tool.name}.`;
	} else if (newVersion) {
		updateMsg = `A new version of ${tool.name} (v${newVersion}) is available. Please update for an improved experience.`;
	} else {
		updateMsg = `Your version of ${tool.name} appears to be out of date. Please update for an improved experience.`;
	}

	let choices: string[] = ['Update'];
	if (toolName === 'gopls') {
		choices = ['Always Update', 'Update Once', 'Release Notes'];
	}
	if (toolName === 'dlv') {
		choices = ['Always Update', 'Update Once'];
	}

	const goVersion = await getGoVersion();

	while (choices.length > 0) {
		const selected = await vscode.window.showInformationMessage(updateMsg, ...choices);
		switch (selected) {
			case 'Always Update':
				// Update the user's settings to enable auto updates. They can
				// always opt-out in their settings.
				const goConfig = getGoConfig();
				await goConfig.update('toolsManagement.autoUpdate', true, ConfigurationTarget.Global);

				// And then install the tool.
				choices = [];
				await installTools([toolVersion], goVersion);
				break;
			case 'Update Once':
				choices = [];
				await installTools([toolVersion], goVersion);
				break;
			case 'Update':
				choices = [];
				await installTools([toolVersion], goVersion);
				break;
			case 'Release Notes':
				choices = choices.filter((value) => value !== 'Release Notes');
				vscode.commands.executeCommand(
					'vscode.open',
					vscode.Uri.parse(`https://github.com/golang/tools/releases/tag/${tool.name}/v${newVersion}`)
				);
				break;
			default:
				choices = [];
				declinedUpdates.push(tool);
				break;
		}
	}
}