function addOnDidChangeConfigListeners()

in src/goMain.ts [239:328]
88 lines of code
28 McCabe index (conditional complexity)

function addOnDidChangeConfigListeners(ctx: vscode.ExtensionContext) {
	// Subscribe to notifications for changes to the configuration
	// of the language server, even if it's not currently in use.
	ctx.subscriptions.push(
		vscode.workspace.onDidChangeConfiguration((e) => watchLanguageServerConfiguration(goCtx, e))
	);
	ctx.subscriptions.push(
		vscode.workspace.onDidChangeConfiguration(async (e: vscode.ConfigurationChangeEvent) => {
			if (!e.affectsConfiguration('go')) {
				return;
			}
			const updatedGoConfig = getGoConfig();

			if (e.affectsConfiguration('go.goroot')) {
				const configGOROOT = updatedGoConfig['goroot'];
				if (configGOROOT) {
					await setGOROOTEnvVar(configGOROOT);
				}
			}
			if (
				e.affectsConfiguration('go.goroot') ||
				e.affectsConfiguration('go.alternateTools') ||
				e.affectsConfiguration('go.gopath') ||
				e.affectsConfiguration('go.toolsEnvVars') ||
				e.affectsConfiguration('go.testEnvFile')
			) {
				updateGoVarsFromConfig(goCtx);
			}
			if (e.affectsConfiguration('go.logging')) {
				setLogConfig(updatedGoConfig['logging']);
			}
			// If there was a change in "toolsGopath" setting, then clear cache for go tools
			if (getToolsGopath() !== getToolsGopath(false)) {
				clearCacheForTools();
			}

			if (e.affectsConfiguration('go.formatTool')) {
				checkToolExists(getFormatTool(updatedGoConfig));
			}
			if (e.affectsConfiguration('go.lintTool')) {
				checkToolExists(updatedGoConfig['lintTool']);
			}
			if (e.affectsConfiguration('go.docsTool')) {
				checkToolExists(updatedGoConfig['docsTool']);
			}
			if (e.affectsConfiguration('go.coverageDecorator')) {
				updateCodeCoverageDecorators(updatedGoConfig['coverageDecorator']);
			}
			if (e.affectsConfiguration('go.toolsEnvVars')) {
				const env = toolExecutionEnvironment();
				if (GO111MODULE !== env['GO111MODULE']) {
					const reloadMsg =
						'Reload VS Code window so that the Go tools can respect the change to GO111MODULE';
					vscode.window.showInformationMessage(reloadMsg, 'Reload').then((selected) => {
						if (selected === 'Reload') {
							vscode.commands.executeCommand('workbench.action.reloadWindow');
						}
					});
				}
			}
			if (e.affectsConfiguration('go.lintTool')) {
				const lintTool = lintDiagnosticCollectionName(updatedGoConfig['lintTool']);
				if (goCtx.lintDiagnosticCollection && goCtx.lintDiagnosticCollection.name !== lintTool) {
					goCtx.lintDiagnosticCollection.dispose();
					goCtx.lintDiagnosticCollection = vscode.languages.createDiagnosticCollection(lintTool);
					ctx.subscriptions.push(goCtx.lintDiagnosticCollection);
					// TODO: actively maintain our own disposables instead of keeping pushing to ctx.subscription.
				}
			}
			if (e.affectsConfiguration('go.testExplorer.enable')) {
				const msg =
					'Go test explorer has been enabled or disabled. For this change to take effect, the window must be reloaded.';
				vscode.window.showInformationMessage(msg, 'Reload').then((selected) => {
					if (selected === 'Reload') {
						vscode.commands.executeCommand('workbench.action.reloadWindow');
					}
				});
			}
			if (e.affectsConfiguration('go.testExplorer.useBazel')) {
				const msg =
					'Bazel has been enabled or disabled. For this change to take effect, the window must be reloaded.';
				vscode.window.showInformationMessage(msg, 'Reload').then((selected) => {
					if (selected === 'Reload') {
						vscode.commands.executeCommand('workbench.action.reloadWindow');
					}
				});
			}
		})
	);
}